Enumerated values 0-63 are reserved for prototype by ASHRAE. Enumerated values 64-255 may be used by others subject to the procedures and constraints described in Clause 23.
Enumerated values 0-63 are reserved for prototype by ASHRAE. Enumerated values 64-65535 may be used by others subject to the procedures and constraints described in Clause 23.
Enumerated values 128-511 are used for events which indicate that access has been denied. Enumerated values 0-511 are reserved for prototype by ASHRAE. Enumerated values 512-65535 may be used by others subject to the procedures and constraints described in Clause 23.
Other services to be added as they are defined. All enumeration values in this production are reserved for prototype by ASHRAE. Proprietary extensions are made by using the ConfirmedPrivateTransfer or UnconfirmedPrivateTransfer services. See Clause 23
Enumerated values 0-255 are reserved for prototype by ASHRAE. Enumerated values 256-65535 may be used by others subject to the procedures and constraints described in Clause 23.
Enumerated values 0-63 are reserved for prototype by ASHRAE. Enumerated values 64-65535 may be used by others subject to the procedures and constraints described in Clause 23. The last enumeration used in this version is 5.
-- Enumerated values 0-63 are reserved for prototype by ASHRAE. Enumerated values 64-65535 may be used by others subject to the procedures and constraints described in Clause 23. It is expected that these enumerated values will correspond to the use of the complex-event-type CHOICE [6] of the BACnetNotificationParameters production.
Enumerated values 0-255 are reserved for prototype by ASHRAE. Enumerated values 256-65535 may be used by others subject to procedures and constraints described in Clause 23.
Enumerated values 0-63 are reserved for prototype by ASHRAE. Enumerated values 64-65535 may be used by others subject to procedures and constraints described in Clause 23.
Enumerated values 0-127 are reserved for prototype by ASHRAE. Enumerated values 128-1023 may be used by others subject to the procedures and constraints described in Clause 23.
The special property identifiers all, optional, and required are reserved for use in the ReadPropertyMultiple service or services not defined in this standard. Enumerated values 0-511 are reserved for prototype by ASHRAE. Enumerated values 512-4194303 may be used by others subject to the procedures and constraints described in Clause 23.
Other services to be added as they are defined. All choice values in this production are reserved for prototype by ASHRAE. Proprietary extensions are made by using the UnconfirmedPrivateTransfer service. See Clause 23
The command message/payload of this actuation event.
The brick:Point(s) (e.g., brick:Commands, brick:Setpoints, or brick:Parameters) that the actuation will target/execute.
The human, group, or machine that consumes or acts upon an object or data. This higher-level grouping allows properties that are shared among its subclasses (Person, Organization, ....) to be anchored in one joint place, on the Agent class.
Indicates membership in an organization. Note that componency (e.g., departments of a corporation) are expressed using the more generic Organization.isPartOf property.
Indicates ownership of some thing, e.g., a building, an asset, an organization, etc.
A designed/landscaped (or potentially designed/landscaped) part of the physical world that has a 3D spatial extent. E.g., a building site, a building, levels within the building, rooms, etc.
Physical address of the architecture (site, building, sub-building, entrance room, etc.) in question.
Links an Architecture to BuildingElement that is contained in the Space.
Describes business-relevant area measurements typically associated with architected spaces. As the exact requirements on these measurements will vary from case to case or jurisdiction to jurisdiction, subclassing and specializing this definition is encouraged.
Describes business-relevant capacity measurements typically associated with architected spaces. As the exact requirements on these measurements will vary from case to case or jurisdiction to jurisdiction, subclassing and specializing this definition is encouraged.
Something which is placed inside of a building, but is not an integral part of that building's structure; e.g., furniture, equipment, systems, etc.
An asset may be mounted on some part of the building construction (e.g., a blind on a facade, a camera on a wall, etc).
A GeoJSON Geometry representing the position or extent of the asset.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Audio_Visual_Equipment
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:BACnet_Controller
Generic xsd:boolean value observation that is not specific to any particular QUDT quantitykind or unit.
A part that constitutes a piece of a building's structural makeup. E.g., Facade, Wall, Slab, Roof, etc.
Indicates the architected space (site, building, level, room...) in which this building element is placed.
A campus represents a collection of location entities. The constituent locations may have differing legal ownership and utilization purposes, but they are generally perceived as a coherent unit or sub-region within a city or other region. E.g., a university campus, a hospital campus, a corporate campus, etc.
An administrative grouping of entities that are adressed and treated as a unit for some purpose. These entities may have some spatial arrangement (e.g., an apartment is typically contiguous) but that is not a requirement (see, e.g., a distributed campus consisting of spatially disjoint plots or buildings). Inclusion in a Collection is determined by the 'includes' field on a specific subclass.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Controller
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Data_Network_Equipment
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Daylight_Sensor_Equipment
Generic xsd:double value observation that is not specific to any particular QUDT quantitykind or unit.
The data rate of the port in Mib/s, i.e. mebibit (2^20 bit) per second.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Ethernet_Port
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Ethernet_Switch
A temporally indexed entity, e.g., an observation, a lease, a construction project, etc. Can be instantaneous (timestamp property assigned) or have temporal extent (start and end properties assigned). Subclasses may define specific behaviour and requirements, e.g., on spatial indexing, agent participation, etc.
The brick:Point that emitted this exception.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Gateway
A georeference creates a relationship between a local coordinate system into a geographic coordinate system.
A transform following GDAL's Affine Transform that transforms a local coordinate into a WGS84 coordinate. Created from Ground Control Points (GCP) using GDAL's GCPsToGeotransform method.
Value will be zero if the local coordinate system is north-aligned.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:IAQ_Sensor_Equipment
Equipment and devices that are part of a building's ICT infrastructure.
The standard the equipment or device adheres to, e.g. IEEE 802.11.
Generic xsd:int value observation that is not specific to any particular QUDT quantitykind or unit.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Leak_Detector_Equipment
Indicates the contract regulating the terms of the lease in question.
The object (e.g., property, equipment, etc) that this a lease of.
The agent leasing some leasable object, i.e., the user of the asset.
The agent leasing out some leasable object, i.e., the owner of the asset.
Formal document that identifies the Tenant and the leased asset or property; states lease term and fee (rent), and detailed terms and conditions of the lease agreement.
Indicates the lease(s) that this contract regulates the conditions of.
The level of a building, a.k.a. storey, floor, etc.
A number indicating the ordinal number of this level within the containing space (typically a Building or in the case of a Mezzanine, sometimes another level). Note that the implementation of this numbering scheme and its starting point is implementation-specific; e.g., the fifth floor below ground may be 0 in some systems, and -5 in others.
This concept definition comes from the Brick distribution until it is added in the REC ontology Turtle distribution.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Modbus_Controller
A GeoJSON MultiPoint coordinate listing. Coordinates may be expressed in two or three dimensions. Ex: [[10.0, 40.0], [40.0, 30.0], [20.0, 20.0], [30.0, 10.0]].
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Network_Security_Equipment
The brick:Point that emitted this observation.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Occupancy_Sensor_Equipment
Occupancy Zone is a spatial area where devices are monitoring or reporting on the concept of Occupancy (motion sensors, people counters, cameras, etc.)
An organization of any sort (e.g., a business, association, project, consortium, tribe, etc.)
Indicates parthood relations in organizations (e.g., departments of a corporation). Note that membership in an organization is expressed using the more specific hasMember property.
URL link to an image/logo that represents the organization.
Indicates membership in an organization. Note that componency (e.g., departments of a corporation) are expressed using the more generic hasPart property.
Indicates parthood relations in organizations (e.g., departments of a corporation). Note that membership in an organization is expressed using the Agent.isMemberOf property.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:People_Count_Sensor_Equipment
A natural person (i.e., an individual human being).
URL link to an image that represents the person.
A GeoJSON Point coordinate listing. Coordinate may be expressed in two or three dimensions. Ex: [30.0, 10.0, 0.0].
An event emanating from or targeting a Point; e.g., an individual Observation from a Sensor point, or an Actuation sent to a Command point. In other terms, the Points indicate the capability of some Space or Equipment to emit or accept data, while this class represents those actual data messages. Note that in most non-trivially sized systems, these events are not stored in the knowledge graph itself, but are rather forwarded to some C&C system or time series database.
A portfolio is a grouping of buildings, sites, apartments, campuses, etc. that share some business-relevant commonality, e.g., are managed by the same company, are rented out to the same tenant, share utilization or legal definition (industrial vs commercial), etc.
The country, e.g., USA, Sweden, Argentina, or optionally a two-letter ISO 3166-1 alpha-2 country code, e.g., "SE", "US", etc.
A premises is an administrative grouping of spaces that are used for some commercial or industrial purpose by a real estate holder or tenant. E.g, a suite of offices, a shop, or an industrial workshop.
The legal/administrative representation of some lands and/or buildings. I.e., "Fastighet" (Swedish), "Ejendom" (Denmark), etc.
An administrative geospatial unit larger than the individual real estate. For instance, "Lombary", "North America", "The Back Bay", "Elnätsområde Syd", etc.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Sensor_Equipment
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Server
A piece of land upon which zero or more buildings may be situated.
A contiguous part of the physical world that contains or can contain sub-spaces. E.g., a Region can contain many Sites, which in turn can contain many Buildings.
A georeference creates a relationship between the local coordinate system used within a building (e.g., measured in meters) and a geographic coordinate system (e.g., lat, long, alt), such that locally placed Spaces can be resolved and rendered in that geographic coordinate system (e.g., for mapping purposes).
Polygon representing the spatial extent of this Space.
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Thermostat
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Vibration_Sensor_Equipment
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Wireless_Access_Point
A sub-zone within or outside of a building defined to support some technology and/or use, e.g., an HVAC zone, a parking space, a security zone, etc.
any datatype appropriate for the specified property
used only with array datatype if omitted with an array the entire array is referenced
UTC time, all wild if unknown
0 if key set is not configured
first octet: month (1..14), 1 =January, 13 = odd months, 14 = even months, X'FF' = any month; second octet: weekOfMonth where: 1 = days numbered 1-7, 2 = days numbered 8-14, 3 = days numbered 15-21, 4 = days numbered 22-28, 5 = days numbered 29-31, 6 = last 7 days of this month, X'FF' = any week of this month; third octet: dayOfWeek (1..7) where 1 = Monday... 7 = Sunday, X'FF' = any day of week
Applicable units are those of quantitykind:Length
Acceleration Of Gravity
The acceleration of freely falling bodies under the influence of terrestrial gravity, equal to approximately 9.81 meters (32 feet) per second per second.
Applicable units are those of quantitykind:Acceleration
Acceptor Density
"Acceptor Density" is the number per volume of acceptor levels.
Applicable units are those of quantitykind:NumberDensity
Action Time
Applicable units are those of quantitykind:Time
Active Energy
$\textit{Active Energy}$ is the electrical energy transformable into some other form of energy.
$W = \int_{t_1}^{t_2} p dt$, where $p$ is instantaneous power and the integral interval is the time interval from $t_1$ to $t_2$.
"Active Energy" is the electrical energy transformable into some other form of energy.
Applicable units are those of quantitykind:Energy
activity related by mass
$\textit{Activity Related By Mass}$ is quantitative data of the radioactivity of the amount of a radionuclide in a particular state of energy at a defined point in time, divided by the related mass of this quantity.
quantitative Angabe der Radioaktivität einer Menge eines Radionuklids in einem bestimmten Energiezustand zu einem gegebenen Zeitpunkt dividiert durch die zugehörige Masse dieser Menge
quantitative data of the radioactivity of the amount of a radionuclide in a particular state of energy at a defined point in time, divided by the related mass of this quantity
Applicable units are those of quantitykind:MassicActivity
Activity Thresholds
"Activity Thresholds" are thresholds of sensitivity for radioactivity.
Adaptation
"Adaptation" is the recovery of visual ability following exposure to light (dark adaptation), usually measured in units of time.
"Adaptation" is the recovery of visual ability following exposure to light (dark adaptation).
Alpha Disintegration Energy
The "Alpha Disintegration Energy" is the sum of the kinetic energy of the $\alpha$-particle produced in the disintegration process and the recoil energy of the product atom in the reference frame in which the emitting nucleus is at rest before its disintegration.
The "Alpha Disintegration Energy" is the sum of the kinetic energy of the alpha-particle produced in the disintegration process and the recoil energy of the product atom in the reference frame in which the emitting nucleus is at rest before its disintegration.
Ambient Pressure
The ambient pressure on an object is the pressure of the surrounding medium, such as a gas or liquid, which comes into contact with the object. The SI unit of pressure is the pascal (Pa), which is a very small unit relative to atmospheric pressure on Earth, so kilopascals ($kPa$) are more commonly used in this context.
Applicable units are those of quantitykind:ForcePerArea
Ion Concentration
"Ion Concentration" is the moles of ions per volume of solution.
Applicable units are those of quantitykind:Concentration
Angle Of Attack
Angle of attack is the angle between the oncoming air or relative wind and a reference line on the airplane or wing.
Applicable units are those of quantitykind:Angle
Angle of Optical Rotation
The "Angle of Optical Rotation" is the angle through which plane-polarized light is rotated clockwise, as seen when facing the light source, in passing through an optically active medium.
Angular Distance
Angular distance travelled by orbiting vehicle measured from the azimuth of closest approach.
Apogee Radius
Applicable units are those of quantitykind:ElectricChargePerArea
Applicable units are those of quantitykind:MassPerArea
areic charge density or electric flux density or electric polarization
charge Q presented on an area of size A divided by the area A or vector quantity obtained at a given point by adding the electric polarization P to the product of the electric field strength E and the electric constant (permittivity) ε₀
auf einer Fläche mit dem Flächeninhalt A vorhandenen Ladung Q dividiert durch den Flächeninhalt A oder vektorielle Größe, die für einen gegebenen Punkt gleich der Summe der elektrischen Polarisation P und des Produkts aus der elektrischen Feldstärke E und der elektrischen Feldkonstante (Permittivität) ε₀ ist oder räumliche Dichte des elektrischen Moments molekularer Dipole
areic data volume
volume of data, which is usually dependent on the respective complexity of the information or its coding procedure, divided by the related area
Anzahl von Daten, die in der Regel abhängig von der jeweiligen Komplexität der Information oder deren Codierungsverfahren ist, dividiert durch die zugehörige Fläche
areic energy flow
energy in a defined direction of propagation through a surface perpendicular to this, divided by its area
Leistung in festgelegter Ausbreitungsrichtung durch ein dazu senkrechtes Oberflächenelement, dividiert durch dessen Fläche
Applicable units are those of quantitykind:PowerPerArea
Aeric Heat Flow Rate
$\varphi = \frac{\Phi}{A}$, where $\Phi$ is heat flow rate and $A$ is area.
areic mass
mass divided by the related area
Masse dividiert durch die zugehörige Fläche
areic torque
ratio of a torque acting on a surface and causing a rotation or shearing divided by this area
Quotient aus dem auf eine Fläche wirkenden, eine Verdrehung bzw. Abscherung verursachenden Drehmoment dividiert durch diese Fläche
Atomic Attenuation Coefficient
"Atomic Attenuation Coefficient" is a measurement of how strongly a chemical species or substance absorbs or scatters light at a given wavelength, per the number of atoms in the substance.
$\mu_a = -\frac{\mu}{n}$, where $\mu$ is the linear attenuation coefficient and $n$ is the number density of the atoms in the substance.
Applicable units are those of quantitykind:Area
Atomic Charge
The electric charge of an ion, equal to the number of electrons the atom has gained or lost in its ionization multiplied by the charge on one electron.
Applicable units are those of quantitykind:ElectricCharge
atomic energy
scalar quantity of elementary particles which is retained within a system following any change and, as saved energy, constitutes the capability of a physical system to carry out work
skalare Größe von Elementarteilchen, die bei beliebiger Umwandlung innerhalb eines Systems erhalten bleibt und als gespeichertes Arbeitsvermögen die Fähigkeit eines physikalischen Systems darstellt, Arbeit zu verrichten
Atomic Mass
The "Atomic Mass" is the mass of a specific isotope, most often expressed in unified atomic mass units.
Applicable units are those of quantitykind:Mass
atomic stopping power
ratio of the linear stopping power to the number density of the atoms in the medium
Quotient aus dem linearen Bremsvermögen und der Anzahldichte der Atome in dem Medium
Auditory Thresholds
"Auditory Thresholds" is the thresholds of sensitivity to auditory signals and other input to the ear or the sense of hearing.
Applicable units are those of quantitykind:SoundPowerLevel
Auxillary Magnetic Field
Magnetic Fields surround magnetic materials and electric currents and are detected by the force they exert on other magnetic materials and moving electric charges. The electric and magnetic fields are two interrelated aspects of a single object, called the electromagnetic field. A pure electric field in one reference frame is observed as a combination of both an electric field and a magnetic field in a moving reference frame. The Auxillary Magnetic Field, H characterizes how the true Magnetic Field B influences the organization of magnetic dipoles in a given medium.
Applicable units are those of quantitykind:MagneticFieldStrength_H
Average Energy Loss per Elementary Charge Produced
"Average Energy Loss per Elementary Charge Produced" is also referred to as average energy loss per ion pair formed.
$W_i = \frac{E_k}{N_i}$, where $E_k$ is the initial kinetic energy of an ionizing charged particle and $N_i$ is the total ionization produced by that particle.
Average Head End Pressure
Average Specific Impulse
Average Vacuum Thrust
Applicable units are those of quantitykind:Force
Azimuth
The horizontal angle between an object's orientation frame and a cardinal direction, generally north. In the context of architecture, this would refer to the direction a structure faces relative to the direction north.
The horizontal angle between an object and a cardinal direction, generally north. In the context of architecture, this would refer to the direction a structure faces relative to the direction north.
bandwidth length product
parameter of transmission media for determination of frequency and length restrictions as reciprocal value of the multimode distortion corresponding to the product of maximum pulse frequency and maximum transmission distance
Parameter von Übertragungsmedien zur Bestimmung der Frequenz- und Längenrestriktionen als reziproke Wert der Modendispersion entsprechend dem Produkt aus maximaler Impulsfrequenz mal maximaler Übertragungsstrecke
Bending Moment of Force
A bending moment exists in a structural element when a moment is applied to the element so that the element bends. It is the component of moment of force perpendicular to the longitudinal axis of a beam or a shaft.
$M_b = M \cdot e_Q$, where $M$ is the momentof force and $e_Q$ is a unit vector directed along a $Q-axis$ with respect to which the torque is considered.
Applicable units are those of quantitykind:Torque
Beta Disintegration Energy
"Beta Disintegration Energy" is the energy released by a beta particle radioactive decay. It is the sum of the maximum beta-particle kinetic energy and the recoil energy of the atom produced in the reference frame in which the emitting nucleus is at rest before its disintegration.
Bevel Gear Pitch Angle
Pitch angle in bevel gears is the angle between an element of a pitch cone and its axis. In external and internal bevel gears, the pitch angles are respectively less than and greater than 90 degrees.
Biogeochemical Rate
the rate at which a specific chemical element or compound is processed or transformed, as amount per unit mass of the relevant material Unreduced, SI unit is mole * kg-1 * s-1
the rate at which a specific chemical element or compound is processed or transformed, as amount per unit mass of the relevant material. Unreduced, SI unit is mole * kg-1 * s-1
bit data volume
name for a particular quantity of data on the basis of the binary digit "Bit" (basic indissoluble information unit) which can only assume a state of 1 or 0
Bezeichnung für eine bestimmte Anzahl von Daten auf Basis der Binärziffer Bit (en: Basic Indissoluble Information Unit, dt: kleinstmögliche Informationseinheit), welche nur den Zustand 1 oder 0 annehmen kann
bit transmission rate
speed with which one bit will be transmitted per second
Geschwindigkeit, mit der Binärzeichen übertragen werden
Applicable units are those of quantitykind:BitRate
Bragg Angle
"Bragg Angle" describes the condition for a plane wave to be diffracted from a family of lattice planes, the angle between the wavevector of the incident plane wave, and the lattice planes.
العرض
šířka
Breite
breadth
ancho
عرض
largeur
larghezza
lebar
szerokość
largura
ширина
širina
genişliği
寬度
"Breadth" is the extent or measure of how broad or wide something is.
Buckling Factor
Applicable units are those of quantitykind:Dimensionless
Burgers Vector
"Burgers Vector" is the vector characterizing a dislocation, i.e. the closing vector in a Burgers circuit encircling a dislocation line.
Burn Time
byte data volume
particular quantity of data based on a string consisting of 8 bits
Anzahl von Daten auf Basis einer Zeichenfolge, die aus je 8 Bit besteht
Applicable units are those of quantitykind:Count
byte transmission rate
speed with which 8 bits are transmitted
Geschwindigkeit, mit der 8 Binärzeichen übertragen werden
Applicable units are those of quantitykind:ByteRate
Center of Gravity in the X axis
Center of Gravity in the Y axis
Center of Gravity in the Z axis
Center of Mass (CoM)
The point at which the distributed mass of a composite body can be acted upon by a force without inducing any rotation of the composite body.
Contract End Item (CEI) Specification Mass.
Contractual mass requirement of a delivered item. Note that The term 'control mass' is sometimes utilized as a limit in lieu of CEI mass when a CEI mass does not exist. The term 'Interface Control Document Mass' is another alternative for specifying a contractual mass requirement.
Control Mass.
The upper design gross mass limit of a system at a specified mission event against which margins are calculated after accounting for basic masses of flight hardware, MGA, and uncertainties. It may include propellants, crew, and cargo.
Carrier LifetIme
"Carrier LifetIme" is a time constant for recombination or trapping of minority charge carriers in semiconductors.
Cartesian Area
"Area" is a quantity that expresses the extent of a two-dimensional surface or shape, or planar lamina, in the plane.
$A = \int\int dxdy$, where $x$ and $y$ are cartesian coordinates.
Kartézská soustava souřadnic
kartesische Koordinaten
Cartesian coordinates
مختصات دکارتی
coordonnées cartésiennes
coordinate cartesiane
Koordiant Kartesius
coordenadas cartesianas
kartezyen koordinatları
直角坐标系
"Cartesian Coordinates" specify each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances from the point to two fixed perpendicular directed lines, measured in the same unit of length.
Kartézské souřadnice
حجم
Обем
Objem
Volumen
Επιτάχυνση
volume
volumen
נפח
आयतन
体積
Isipadu
objętość
volum
Объём
prostornina
hacim
体积
"Volume" is the quantity of three-dimensional space enclosed by some closed boundary, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains.
$V = \int\int\int dxdydz$, where $x$, $y$, and $z$ are cartesian coordinates.
Applicable units are those of quantitykind:Volume
درجة الحرارة المئوية أو السيلسيوس
teplota
Celsius-Temperatur
Celsius temperature
temperatura Celsius
دمای سلسیوس/سانتیگراد
température Celsius
צלזיוס
सेल्सियस तापमान
温度
Suhu Celsius
temperatura
temperatura celsius
temperatură Celsius
Температура Цельсия
Celsius sıcaklık
"Celsius Temperature", the thermodynamic temperature T_0, is exactly 0.01 kelvin below the thermodynamic temperature of the triple point of water.
"Celsius Temperature", the thermodynamic temperature $T_0$, is exactly $0.01$kelvin below the thermodynamic temperature of the triple point of water. $t = T - T_0$, where $T$ is Thermodynamic Temperature and $T_0 = 273.15 K$.
Applicable units are those of quantitykind:ThermodynamicTemperature
Characteristic Acoustic Impedance
Characteristic impedance at a point in a non-dissipative medium and for a plane progressive wave, the quotient of the sound pressure $p$ by the component of the sound particle velocity $v$ in the direction of the wave propagation.
$Z_c = pc$, where $p$ is the sound pressure and $c$ is the phase speed of sound.
Applicable units are those of quantitykind:AcousticImpedance
characteristic number
quantity of dimension one (as a result of measuring technology theory) which clarifies facts, states or developments and is used as a scale e.g. to represent causes and effects of events
Größe der Dimension 1 (als Ergebnis der metrisierenden Messtheorie), die Sachverhalte, Zustände oder Entwicklungen verdeutlicht und als Maßstab dient, um z. B. Ursache und Wirkung von Vorgängen in kausalem Zusammenhang darzustellen
Characteristic Velocity
Characteristic velocity or $c^{*}$ is a measure of the combustion performance of a rocket engine independent of nozzle performance, and is used to compare different propellants and propulsion systems.
Applicable units are those of quantitykind:Velocity
Chemical Consumption per Mass
In the context of a chemical durability test, this is measure of how much of a solution (often a corrosive or reactive one) is consumed or used up per unit mass of a material being tested. In other words, this the volume of solution needed to cause a certain level of chemical reaction or damage to a given mass of the material.
Applicable units are those of quantitykind:SpecificVolume
Circulation
In fluid dynamics, circulation is the line integral around a closed curve of the fluid velocity. It has dimensions of length squared over time.
Applicable units are those of quantitykind:AreaPerTime
Closest Approach Radius
Coherence Length
"Coherence Length" characterizes the distance in a superconductor over which the effect of a perturbation is appreciable.
Cold Receptor Threshold
"Cold Receptor Threshold" is the threshold of cold-sensitive free nerve-ending.
Applicable units are those of quantitykind:Temperature
Combustion Chamber Temperature
Applicable units are those of quantitykind:Frequency
Compound Plane Angle
A "Compound Plane Angle" is a compound measure of plane angle in degrees, minutes, seconds, and optionally millionth-seconds of arc.
Applicable units are those of quantitykind:PlaneAngle
Compressibility Factor
The compressibility factor ($Z$) is a useful thermodynamic property for modifying the ideal gas law to account for the real gas behaviour. The closer a gas is to a phase change, the larger the deviations from ideal behavior. It is simply defined as the ratio of the molar volume of a gas to the molar volume of an ideal gas at the same temperature and pressure. Values for compressibility are calculated using equations of state (EOS), such as the virial equation and van der Waals equation. The compressibility factor for specific gases can be obtained, with out calculation, from compressibility charts. These charts are created by plotting Z as a function of pressure at constant temperature.
Applicable units are those of quantitykind:DimensionlessRatio
Conductive Heat Transfer Rate
"Conductive Heat Transfer Rate" is proportional to temperature gradient and area of contact.
Applicable units are those of quantitykind:HeatFlowRate
Convective Heat Transfer
"Convective Heat Transfer" is convective heat transfer coefficient multiplied by temperature difference and exchange area.
Cross-sectional Area
معامل التمدد الحجمى
Вълново число
Volumenausdehnungskoeffizient
Κυματαριθμός
cubic expansion coefficient
coeficiente de dilatación cúbica
ضریب انبساط گرمایی
coefficient de dilatation volumique
מספר גל
Hullámszám
coefficiente di dilatazione volumica
線膨張係数
współczynnik rozszerzalności objętościowej
coeficiente de dilatação volúmica
Температурный коэффициент
kübik genleşme katsayısı
体膨胀系数
$\alpha_V = \frac{1}{V} \; \frac{dV}{dT}$, where $V$ is $volume$ and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:ExpansionRatio
current of the amount of substance
ratio of the amount of substance divided by the related time
Quotient Stoffmenge dividiert durch die zugehörige Zeit
I²t-value
cut-off current parameter as rating for fuses and switches, derived from the so-called Joule integral
Durchlassstrom-Kennwert als Bemessungsgröße für Sicherungen und Schalter, welcher abgeleitet ist aus dem sogenannten Joule-Integral
Larmor Angular Frequency
The "Cyclotron Angular Frequency" describes angular momentum vector precession about the external field axis with an angular frequency.
$\omega_c = \frac{\left | q \right |}{m}B$, where $q$ is the electric charge, $m$ is its mass, and $B$ is the magnetic flux density.
Applicable units are those of quantitykind:AngularFrequency
Delta-V
The change in translational velocity including all losses for a propulsive system or module. Delta-V losses include, but are not limited to, gravity losses and steering losses.
Dry Mass
Mass of a system without the propellants, pressurants, reserve or residual fluids, personnel and personnel provisions, and cargo.
data transmission rate
Debye Angular Frequency
"Debye Angular Frequency" is the cut-off angular frequency in the Debye model of the vibrational spectrum of a solid.
Debye Temperature
"Debye Temperature" is the temperature at which the highest-frequency mode (and hence all modes) are excited.
$\Theta_D = \frac{\hbar\omega_D}{k}$, where $k$ is the Boltzmann constant, $\hbar$ is the reduced Planck constant, and $\omega_D$ is the Debye angular frequency.
Density In Combustion Chamber
Applicable units are those of quantitykind:MassDensity
Density Of The Exhaust Gases
Applicable units are those of quantitykind:Density
Depth
Depth typically refers to the vertical measure of length from the surface of a liquid.
قطر
průměr
Durchmesser
diameter
diámetro
diamètre
diametro
直径
średnica
diâmetro
диаметр
premer
çap
In classical geometry, the "Diameter" of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle.
$d = 2r$, where $r$ is the radius of the circle.
Diffusion Area
"Diffusion Area" in an infinite homogenous medium, is one-sixth of the mean square distance between the point where a neutron enters a specified class and the point where it leaves that class.
Diffusion Coefficient for Fluence Rate
The "Diffusion Coefficient for Fluence Rate" is a proportionality constant between the .
$D_\varphi = -\frac{J_x}{\frac{\partial d\varphi}{\partial dx}}$, where $J_x$ is the $x-component$ of the particle current and $\varphi$ is the particle fluence rate.
Diffusion Length
"Diffusion Length" is the average distance traveled by a particle, or a thermal neutron in a nuclear reactor, from the point at which it is formed to the point at which it is absorbed.
$L = \sqrt{L^2}$, where $L^2$ is the diffusion area.
Displacement
"Displacement" is the shortest distance from the initial to the final position of a point P.
$\Delta r = R_f - R_i$, where $R_f$ is the final position and $R_i$ is the initial position.
Displacement Vector of Ion
$u = R - R_0$, where $R$ is the particle position vector and $R_0$ is the equilibrium position vector of a particle.
Distance Traveled During a Burn
Applicable units are those of quantitykind:Distance
Donor Density
"Donor Density" is the number per volume of donor levels.
Drag Coefficient
In fluid dynamics, the drag coefficient is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment such as air or water.
Drag Force
In fluid dynamics, drag refers to forces which act on a solid object in the direction of the relative fluid flow velocity. Unlike other resistive forces such as dry friction, which is nearly independent of velocity, drag forces depend on velocity. Drag forces always decrease fluid velocity relative to the solid object in the fluid's path.
Dry Bulb Temperature
The temperature of air measured by a thermometer freely exposed to the air, but shielded from radiation.
Dynamic Friction
Kinetic (or dynamic) friction occurs when two objects are moving relative to each other and rub together (like a sled on the ground).
Dynamic Friction Coefficient
$\mu = \frac{F}{N}$, where $F$ is the tangential component of the contact force and $N$ is the normal component of the contact force between two sliding bodies.
Applicable units are those of quantitykind:FrictionCoefficient
Earth Closest Approach Vehicle Velocity
Eccentricity Of Orbit
The orbital eccentricity of an astronomical object is a parameter that determines the amount by which its orbit around another body deviates from a perfect circle. In a two-body problem with inverse-square-law force, every orbit is a Kepler orbit. The eccentricity of this Kepler orbit is a positive number that defines its shape.
Effective Exhaustvelocity
The velocity of an exhaust stream after reduction by effects such as friction, non-axially directed flow, and pressure differences between the inside of the rocket and its surroundings. The effective exhaust velocity is one of two factors determining the thrust, or accelerating force, that a rocket can develop, the other factor being the quantity of reaction mass expelled from the rocket in unit time. In most cases, the effective exhaust velocity is close to the actual exhaust velocity.
Effective Mass
"Effective Mass" is used in the motional equation for electrons in solid state bodies, depending on the wavenumber and corresponding to its velocity and energy level.
$m^* = \hbar^2k(\frac{d\varepsilon}{dk})$, where $\hbar$ is the reduced Planck constant, $k$ is the wavenumber, and $\varepsilon$ is the energy of the electron.
كفاءة
Wirkungsgrad
efficiency
rendimiento
rendement
efficienza
効率
sprawność
eficiência
коэффициент полезного действия
效率
Efficiency is the ratio of output power to input power.
$\eta = \frac{P_{out}}{P_{in}}$, where $P_{out}$ is the output power and $P_{in}$ is the input power.
rendimento
Einstein transition probability for spontaneous or induced emission and absorption
nuclear constant for the special transition where the probability of the absorption, spontaneous emission or induced emission of energy depends on the number of existing quantums of light, expressed as energy density in the wave model of light: energy divided by volume and frequency
atomare Konstante für den speziellen Übergang, wobei die Wahrscheinlichkeit der Absorption, der spontanen Emission und der induzierte Emission von Energie abhängig ist von der Zahl der vorhandenen Lichtquanten, ausgedrückt als Energiedichte im Wellenmodell des Lichtes: Energie durch Volumen und Frequenz
Electric Displacement Field
Electric Propulsion Propellant Mass
Electrical Power To Mass Ratio
Applicable units are those of quantitykind:SpecificPower
قوة محركة كهربائية
Elektromotorické napětí
elektromotorische Kraft
electromotive force
fuerza electromotriz
نیروی محرک الکتریکی
force électromotrice
विद्युतवाहक बल
forza elettromotrice
起電力
Daya gerak elektrik
siła elektromotoryczna
força eletromotriz
forță electromotoare
электродвижущая сила
elektromotorna sila
Elektromotor kuvvet
電動勢
In physics, $\textit{Electromotive Force}$, or most commonly $emf$ (seldom capitalized), or (occasionally) electromotance is that which tends to cause current (actual electrons and ions) to flow. More formally, $emf$ is the external work expended per unit of charge to produce an electric potential difference across two open-circuited terminals. $\textit{Electromotive Force}$ is deprecated in the ISO System of Quantities.
Applicable units are those of quantitykind:EnergyPerElectricCharge
Electron Affinity
$\textit{Electron Affinity}$ is the energy difference between an electron at rest at infinity and an electron at the lowest level of the conduction band in an insulator or semiconductor. The amount of energy released when an electron is added to a neutral atom or molecule to form a negative ion.
"Electron Affinity" is the energy difference between an electron at rest at infinity and an electron at the lowest level of the conduction band in an insulator or semiconductor. The the amount of energy released when an electron is added to a neutral atom or molecule to form a negative ion.
Electron Density
$\textit{Electron Density}$ is the number of electrons per volume in conduction bands. It is the measure of the probability of an electron being present at a specific location.
"Electron Density" is the number of electrons per volume in conduction bands. It is the measure of the probability of an electron being present at a specific location.
Electron Mean Free Path
$\textit{Electron Mean Free Path}$ is the mean free path of electrons.
"Electron Mean Free Path" is the mean free path of electrons.
Applicable units are those of quantitykind:Mobility
Electron Radius
$\textit{Electron Radius}$, also known as the Lorentz radius or the Thomson scattering length, is based on a classical (i.e., non-quantum) relativistic model of the electron.
$r_e = \frac{e^2}{4\pi m_e c_0^2}$, where $e$ is the elementary charge, $\varepsilon_0$ is the electric constant, item $m_e$ is the rest mass of electrons, and $c_0$ is the speed of light in vacuum.
"Electron Radius", also known as the Lorentz radius or the Thomson scattering length, is based on a classical (i.e., non-quantum) relativistic model of the electron.
Elliptical Orbit Apogee Velocity
Velocity at apogee for an elliptical orbit velocity
Elliptical Orbit Perigee Velocity
energy content
saved quantity of energy which can be used physically or chemically
gespeicherte Energiemenge, die physikalisch oder chemisch nutzbar ist
Energy Expenditure
Energy expenditure is dependent on a person's sex, metabolic rate, body-mass composition, the thermic effects of food, and activity level. The approximate energy expenditure of a man lying in bed is $1.0\,kilo\,calorie\,per\,hour\,per\,kilogram$. For slow walking (just over two miles per hour), $3.0\,kilo\,calorie\,per\,hour\,per\,kilogram$. For fast steady running (about 10 miles per hour), $16.3\,kilo\,calorie\,per\,hour\,per\,kilogram$. Females expend about 10 per cent less energy than males of the same size doing a comparable activity. For people weighing the same, individuals with a high percentage of body fat usually expend less energy than lean people, because fat is not as metabolically active as muscle.
Energy Fluence Rate
"Energy Fluence Rate" can be used to describe the energy fluence delivered per unit time.
$\Psi = \frac{d\Psi}{dt}$, where $d\Psi$ is the increment of the energy fluence during an infinitesimal time interval with duration $dt$.
Energy Imparted
The "Energy Imparted", is a physical quantity associated with the energy delivered to a particular volume of matter by all the directly and indirectly ionizing particles (i.e. charged and uncharged) entering that volume.
For ionizing radiation in the matter in a given 3D domain, $\varepsilon = \sum_i \varepsilon_i$, where the energy deposit, $\varepsilon_i$ is the energy deposited in a single interaction $i$, and is given by $\varepsilon_i = \varepsilon_{in} - \varepsilon_{out} + Q$, where $\varepsilon_{in}$ is the energy of the incident ionizing particle, excluding rest energy, $\varepsilon_{out}$ is the sum of the energies of all ionizing particles leaving the interaction, excluding rest energy, and $Q$ is the change in the rest energies of the nucleus and of all particles involved in the interaction.
طاقة حركية
kinetická energie
kinetische Energie
kinetic energy
energía cinética
انرژی جنبشی
énergie cinétique
गतिज ऊर्जा
energia cinetica
運動エネルギー
Tenaga kinetik
energia kinetyczna
energia cinética
Energie cinetică
кинетическая энергия
Kinetik enerji
动能
The kinetic energy of an object is the energy which it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
Energy Level
"Energy Level" is the ionization energy for an electron at the Fermi energy in the interior of a substance.
Square Energy
equilibrium constant based on concentration
Kc = ΠB(cB)νB for solutions
Kc = ΠB(cB)νB für Lösungen
equilibrium constant based on pressure
Kp = ΠB(pB)νB for gases
Kp = ΠB(pB)νB für Gase
Equilibrium Position Vector of Ion
"Equilibrium Position Vector of Ion" is the position vector of a particle in equilibrium.
equivalence dose output
ratio of equivalence dose within an appropriately small interval to this interval, calculated as the differential quotient: q • D = q • ∂D/∂t as a measure of the current radiation exposure
Quotient aus der Äquivalenzdosis in einer angemessenen kleinen Zeitspanne und dieser Zeitspanne, berechenbar als Differentialquotient: q • D = q • ∂D/∂t als Maß für die aktuelle Strahlenbelastung
Equivalent absorption area
In a diffuse sound field, the Equivalent Absorption Area is that area of a surface having an absorption factor equal to 1, which, if diffraction effects are neglected, would, in the same diffuse sound field, absorb the same power.
Equivalent Concentration
"Equivalent Concentration" is the amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction, per volume.
The amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction, per volume.
Equivalent Density
"Equivalent Density" is the mass of a substance that reacts with (or is equivalent to) an arbitrary mass of another substance in a given chemical reaction, per volume.
Molar Equivalent
"Molar Equivalent" is the amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction.
Applicable units are those of quantitykind:AmountOfSubstance
Evaporative Heat Transfer
Exhaust Gas Mean Molecular Weight
Exhaust Gases Specific Heat
Specific heat of exhaust gases at constant pressure.
Applicable units are those of quantitykind:SpecificHeatCapacity
Exhaust Stream Power
Applicable units are those of quantitykind:Power
Exit Plane Cross-sectional Area
Cross-sectional area at exit plane of nozzle
Exit Plane Pressure
Exit Plane Temperature
Exposure
"Exposure" reflects the extent of ionization events taking place when air is irradiated by ionizing photons (gamma radiation and/or x rays). In photography, exposure is the amount of light allowed to fall on each area unit of a photographic medium (photographic film or image sensor) during the process of taking a photograph. Exposure is measured in lux seconds, and can be computed from exposure value (EV) and scene luminance in a specified region.
For X-or gamma radiation, $X = \frac{dQ}{dm}$, where $dQ$ is the absolute value of the mean total electric charge of the ions of the same sign produced in dry air when all the electrons and positrons liberated or created by photons in an element of air are completely stopped in air, and $dm$ is the mass of that element.
Applicable units are those of quantitykind:ElectricChargePerMass
exposure of ionizing radiation
measure of an electromagnetic radiation field to which a material is exposed in terms of ionization, which the radiation produces as reference material air, expressed as ratio of ∂Q and ∂m, where ∂Q is the absolute value of the total charge of the ions of one sign produced in the air of mass ∂m when all of the electrons (and positrons) liberated by photons in this mass element are completely stopped
Maß für die Wirkung eines elektromagnetischen Feldes auf Materie in Form der Ionisation, die die Strahlung im Referenzmaterial Luft erzeugt, ausgedrückt als Quotient aus ∂Q und ∂m, wobei ∂Q der Absolutwert der gesamten elektrischen Ladung der Ionen eines Vorzeichens ist, die in Luft der Masse ∂m gebildet wird, wenn in diesem Massenelement alle Elektronen (und Positronen), die durch die Photonen freigesetzt werden, komplett gestoppt werden
exposure rate of ionizing radiation
ratio between the exposure of ionizing radiation dJ in a time interval and the duration dt of this interval
Quotient Ionendosis dJ in einem Zeitintervall durch Dauer dt dieses Zeitintervalls
Flight Performance Reserve Propellant Mass
A quantity of propellant, at a nominal mixture ratio, along with fuel bias that is set aside from total propellant loaded to cover for statistical variations of flight hardware characteristics and environment conditions on the day of launch. The launch vehicle is designed to accommodate the maximum FPR loading.
Fuel Bias
An additional quantity of fuel to ensure depletion of high-weight oxidizer before fuel for systems with high-oxidizer mixing ratios (e.g., 6:1). This practice allows for more efficient propellant utilization. Denoted as a percentage.
Fahrenheit temperature
quantity whose zero point is defined by the temperature of a mixture of ice, water and ammonium chloride (-17.8 °C) and its fixed points on the Fahrenheit scale are 32 °F (melting point of ice) and 212 °F (boiling point of water)
Größe, deren Nullpunkt durch die Mischungstemperatur von Eis, Wasser und Salmiak (Ammoniumchlorid) definiert ist (-17,8 °C) und deren Fixpunkte auf der Fahrenheit-Skala 32 °F (Schmelztemperatur von Eis) und 212 °F (Siedetemperatur des Wassers) sind
failure rate
limiting value - if it exists - of the ratio between the conditional probability that the fault time t of a resource will fall within a defined interval (t, t + Δt), and the duration of this interval if Δt approaches zero and the unit is in an operational state at the beginning of the interval
Grenzwert - falls er existiert - des Quotienten aus der bedingten Wahrscheinlichkeit, dass der Ausfallzeitpunkt t eines Betriebsmittels in ein gegebenes Zeitintervall (t, t + Δt) fällt, und der Dauer dieses Zeitintervalls, wenn Δt gegen null geht und das Betriebsmittel sich zu Beginn des Zeitintervalls im betriebsfähigen Zustand befindet
Fermi Energy
"Fermi Energy" in a metal is the highest occupied energy level at zero thermodynamic temperature.
Fermi Temperature
"Fermi Temperature" is the temperature associated with the Fermi energy.
$T_F = \frac{E_F}{k}$, where $E_F$ is the Fermi energy and $k$ is the Boltzmann constant.
Final Or Current Vehicle Mass
First Moment of Area
The first moment of area is the summation of area times distance to an axis. It is a measure of the distribution of the area of a shape in relationship to an axis.
First Stage Mass Ratio
Mass ratio for the first stage of a multistage launcher.
Applicable units are those of quantitykind:MassRatio
Fission Core Radius To Height Ratio
Fission Fuel Utilization Factor
Fission Multiplication Factor
The number of fission neutrons produced per absorption in the fuel.
Flight Path Angle
Flight path angle is defined in two different ways. To the aerodynamicist, it is the angle between the flight path vector (where the airplane is going) and the local atmosphere. To the flight crew, it is normally known as the angle between the flight path vector and the horizon, also known as the climb (or descent) angle.
Fundamental Lattice vector
"Fundamental Lattice vector" are fundamental translation vectors for the crystal lattice.
Fundamental Reciprocal Lattice Vector
"Fundamental Reciprocal Lattice Vector" are fundamental, or primary, translation vectors the reciprocal lattice.
Applicable units are those of quantitykind:AngularReciprocalLatticeVector
Gross Lift-Off Weight
The sum of a rocket's inert mass and usable fluids and gases at sea level.
Gain
A general term used to denote an increase in signal power or signal strength in transmission from one point to another. Gain is usually expressed in decibels and is widely used to denote transducer gain. An increase or amplification. In radar there are two general usages of the term: (a) antenna gain, or gain factor, is the ratio of the power transmitted along the beam axis to that of an isotropic radiator transmitting the same total power; (b) receiver gain, or video gain, is the amplification given a signal by the receiver.
gas leak rate
ratio of the pV value of a gas (product of pressure and volume of a given quantity of gas at the respective temperature) flowing through a pipe cross-section during a time interval and the related interval
Quotient aus dem pV-Wert eines Gases (Produkt aus Druck und Volumen einer bestimmten Menge eines Gases bei der jeweils herrschenden Temperatur), das während einer Zeitspanne durch einen Leitungsquerschnitt strömt, und der zugehörigen Zeitspanne
Grand Canonical Partition Function
An "Grand Canonical Partition Function" for a grand canonical ensemble, a system that can exchange both heat and particles with the environment, which has a constant temperature and a chemical potential.
$\Xi = \sum_{N_A, N_B, ...} Z(N_A, N_B, ...) \cdot \lambda_A^{N_A} \cdot \lambda_B^{N_B} \cdot ...$, where $Z(N_A, N_B, ...)$ is the canonical partition function for the given number of particles $A, B, ...,$, and $\lambda_A, \lambda_B, ...$ are the absolute activities of particles $A, B, ...$.
Applicable units are those of quantitykind:CanonicalPartitionFunction
Gravitational Attraction
The force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface; the more remote the body the less the gravity; the gravitation between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them.
Gustatory Threshold
"Gustatory Threshold" are thresholds for classes of taste that can be detected by the human mouth and thresholds of sensitivity to foods, drinks and other substances.
Gyromagnetic Ratio
$\textit{Gyromagnetic Ratio}$, also sometimes known as the magnetogyric ratio in other disciplines, of a particle or system is the ratio of its magnetic dipole moment to its angular momentum, and it is often denoted by the symbol, $\gamma$. Its SI units are radian per second per tesla ($rad s^{-1} \cdot T^{1}$) or, equivalently, coulomb per kilogram ($C \cdot kg^{-1}$).
$\mu = \gamma J$, where $\mu$ is the magnetic dipole moment, and $J$ is the total angular momentum.
Poločas rozpadu
Halbwertszeit
half-life
semiperiodo
نیمه عمر
temps de demi-vie
tempo di dimezzamento
Separuh hayat
meia-vida
yarılanma süresi
半衰期
The "Half-Life" is the average duration required for the decay of one half of the atoms or nuclei.
semivita
Half-Value Thickness
The "Half-Value Thickness" is the thickness of the material at which the intensity of radiation entering it is reduced by one half.
حرارة
jednotka tepla
Wärme
heat
calor
کمیت گرما
quantité de chaleur
ऊष्मा
calore
熱量
labor
kuantiti haba Haba
ciepło
quantidade de calor
cantitate de căldură
Теплота
toplota
ısı miktarı
热量
"Heat" is the energy transferred by a thermal process. Heat can be measured in terms of the dynamical units of energy, as the erg, joule, etc., or in terms of the amount of energy required to produce a definite thermal change in some substance, as, for example, the energy required per degree to raise the temperature of a unit mass of water at some temperature ( calorie, Btu).
Applicable units are those of quantitykind:ThermalEnergy
Wärmemenge
amount of heat
chaleur
quantità di calore
jumlah haba
Heat Capacity Ratio
The heat capacity ratio, or ratio of specific heats, is the ratio of the heat capacity at constant pressure ($C_P$) to heat capacity at constant volume ($C_V$). For an ideal gas, the heat capacity is constant with temperature ($\theta$). Accordingly we can express the enthalpy as $H = C_P*\theta$ and the internal energy as $U = C_V \cdot \theta$. Thus, it can also be said that the heat capacity ratio is the ratio between enthalpy and internal energy.
Heat Flow Rate per Unit Area
$\textit{Heat Flux}$ is the heat rate per area. In SI units, heat flux is measured in $W/m^2$. Heat rate is a scalar quantity, while heat flux is a vectorial quantity. To define the heat flux at a certain point in space, one takes the limiting case where the size of the surface becomes infinitesimally small.
Heat Flux Density
Calorific Value
The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it.
Applicable units are those of quantitykind:SpecificEnergy
Energy Value
Heating Value
Výška
Höhe
height
altura
ارتفاع
hauteur
altezza
Ketinggian
Înălțime
высота
yükseklik
高度
"Height" is the measurement of vertical distance, but has two meanings in common use. It can either indicate how "tall" something is, or how "high up" it is.
Hole Density
"Hole Density" is the number of holes per volume in a valence band.
Horizontal Velocity
Component of a projectile's velocity, which acts parallel to the ground and does not lift the projectile in the air.
Inert Mass
The sum of the vehicle dry mass, residual fluids and gasses, personnel and personnel provisions, and cargo.
Ignition interval time
information content expressed as a logarithm to base 10
I(xi) as the information content I(xi) of a result xi (e.g. the occurrence of a character xi) is the common logarithm of the reciprocal of the probability p(xi) of its occurrence, i.e.: l(x) lg 1/p(x) Hart, where p(x) is the probability of the event x
(xi) als der Informationsgehalt I(xi) eines Ergebnisses xi (z. B. das Auftreten eines Zeichens xi) ist der dekatischer Logarithmus des Kehrwertes der Wahrscheinlichkeit p (xi) für sein eintreten, also: l(x) lg 1/p(x) Hart, dabei ist p(x) die Wahrscheinlichkeit des Ereignisses x
information content expressed as a logarithm to base 2
I(xi) as the information content I(xi) of a result xi (e.g. the occurrence of a character xi) is the binary logarithm of the reciprocal of the probability p(xi) of its occurrence, i.e.: l(x) lb 1/p(x) Sh, where p(x) is the probability of the event x
I(xi) als der Informationsgehalt I(xi) eines Ergebnisses xi (z. B. das Auftreten eines Zeichens xi) ist der binäre Logarithmus des Kehrwertes der Wahrscheinlichkeit p (xi) für sein eintreten, also: l(x) = lb 1/p(x) Sh, dabei ist p(x) die Wahrscheinlichkeit des Ereignisses x
information content expressed as a logarithm to base e
I(xi) as the information content I(xi) of a result xi (e.g. the occurrence of a character xi) is the natural logarithm of the reciprocal of the probability p(xi) of its occurrence, i.e.: l(x) ln 1/p(x) nat, where p(x) is the probability of the event x
I(xi) als der Informationsgehalt I(xi) eines Ergebnisses xi (z. B. das Auftreten eines Zeichens xi) ist der natürliche Logarithmus des Kehrwertes der Wahrscheinlichkeit p (xi) für sein eintreten, also: l(x) = ln 1/p(x) nat, dabei ist p(x) die Wahrscheinlichkeit des Ereignisses x
Initial Expansion Ratio
Initial Nozzle Throat Diameter
Initial Vehicle Mass
Initial Velocity
The velocity of a moving body at starting; especially, the velocity of a projectile as it leaves the mouth of a firearm from which it is discharged.
Intinsic Carrier Density
"Intinsic Carrier Density" is proportional to electron and hole densities.
$np = n_i^2$, where $n$ is electron density and $p$ is hole density.
Ion Current
An ion current is the influx and/or efflux of ions through an ion channel.
Applicable units are those of quantitykind:ElectricCurrent
Ionic Charge
The total charge of an ion. The charge of an electron; the charge of any ion is equal to this electron charge in magnitude, or is an integral multiple of it.
Isothermal Moisture Capacity
"Isothermal Moisture Capacity" is the capacity of a material to absorb moisture in the Effective Moisture Penetration Depth (EMPD) model.
kinematic viscosity or diffusion constant or thermal diffusivity
ratio of the dynamic viscosity and the density of a material measured at the same temperature, or ratio of the diffusion current density and carrier density gradient, or ratio of thermal conductivity divided by heat capacity
Quotient aus der dynamischen Viskosität und der Dichte eines Stoffes oder Quotient Diffusionsstromdichte durch Gradient der Ladungsträgerdichte oder Quotient Wärmeleitfähigkeit durch Wärmekapazität
Kinetic Energy
$\textit{Kinetic Energy}$ is the energy which a body possesses as a consequence of its motion, defined as one-half the product of its mass $m$ and the square of its speed $v$, $ \frac{1}{2} mv^{2} $. The kinetic energy per unit volume of a fluid parcel is the $ \frac{1}{2} p v^{2}$ , where $p$ is the density and $v$ the speed of the parcel. See potential energy. For relativistic speeds the kinetic energy is given by $E_k = mc^2 - m_0 c^2$, where $c$ is the velocity of light in a vacuum, $m_0$ is the rest mass, and $m$ is the moving mass.
$T = \frac{mv^2}{2}$, where $m$ is mass and $v$ is speed.
kinetic or thermal energy
energy presented in the movement of a body, composed of translation and rotation energies, determined by the movement of this body compared to another system and by its mass (mass distribution) or energy in the terms of heat
Energie, die in der Bewegung eines Körpers steckt und sich aus Translationsenergie und Rotationsenergie zusammen setzt, die durch die Bewegung dieses Körpers gegenüber einem anderen System und durch seine Masse (Massenverteilung) bestimmt wird oder Energie in Form von Wärme
The "Larmor Frequency" describes angular momentum vector precession about the external field axis with an angular frequency.
$\omega_L = \frac{e}{2m_e}B$, where $e$ is the elementary charge, $m_e$ is the rest mass of electron, and $B$ is the magnetic flux density.
Lattice Plane Spacing
"Lattice Plane Spacing" is the distance between successive lattice planes.
Length Force
Length per Electric Current
Lift Coefficient
The lift coefficient is a dimensionless coefficient that relates the lift generated by a lifting body, the dynamic pressure of the fluid flow around the body, and a reference area associated with the body.
Lift Force
The lift force, lifting force or simply lift is the sum of all the forces on a body that force it to move perpendicular to the direction of flow.
Streckenlast
Linear Force
Another name for Force Per Length, used by the Industry Foundation Classes (IFC) standard.
Applicable units are those of quantitykind:ForcePerLength
Stiffness is the extent to which an object resists deformation in response to an applied force. Linear Stiffness is the term used in the Industry Foundation Classes (IFC) standard.
linear voltage coefficient
ratio identifying the relationship between induced voltage and velocity
Verhältnis, das den Zusammenhang zwischen induzierter Spannung zur Geschwindigkeit kennzeichnet
lineic charge
electric charge divided by related length
elektrische Ladung dividiert durch dazugehörige Länge
lineic data volume
number of data, usually dependent on the respective information complexity or its coding procedure, divided by the related length
Anzahl von Daten, die in der Regel abhängig von der jeweiligen Komplexität der Information oder deren Codierungsverfahren ist, dividiert durch die zugehörige Länge
lineic logarithmic ratio
logarithm of the relationship between the value of a given quantity and the quantity of a reference value of the same type divided by the related length
Logarithmus des Verhältnisses des Werts einer gegebenen Größe zum Wert einer Bezugsgröße gleicher Art dividiert durch die zugehörige Länge
lineic mass
ratio between mass divided by the related length
Quotient Masse dividiert durch die dazugehörige Länge
lineic quantity
lineic resistance
ratio of resistance divided by length
Quotient Widerstand durch Länge
lineic torque
torque divided by the appropriate length
Drehmoment dividiert durch die zugehörige Länge
Linked Flux
"Linked Flux" is defined as the path integral of the magnetic vector potential. This is the line integral of a magnetic vector potential $A$ along a curve $C$. The line vector element $dr$ is the differential of position vector $r$.
$\Psi_m = \int_C A \cdot dr$, where $A$ is magnetic vector potential and $dr$ is the vector element of the curve $C$.
Applicable units are those of quantitykind:MagneticFlux
logarithmic frequency interval to base 10
logarithm ratio to base 10
dekadischer Logarithmus des Verhältnisses des Werts einer gegebenen Größe zum Wert einer Bezugsgröße gleicher Art
common logarithm of the ratio between the value of a defined variable and the value of a reference variable of the same type
logarithm ratio to base e
napierian logarithm of the ratio between the value of a given quantity and the value of a reference variable of the same type (base of logarithm: e = 2.718...)
natürlicher Logarithmus des Verhältnisses des Werts einer gegebenen Größe zum Wert einer Bezugsgröße gleicher Art (Basis des Logarithmus: e = 2,718...)
common logarithm of the ratio of two frequencies, whereby the frequency that forms the numerator is greater than the frequency that forms the denominator
dekadischer Logarithmus des Quotienten aus zwei Frequenzen, wobei die im Zähler stehende Frequenz größer als die Frequenz im Nenner ist
median information flow (from a source of information), expressed as a common logarithm
ratio of the median information content divided by the expected value for the duration of a character, expressed as a logarithm to base 10
Quotient mittlerer Informationsgehalt durch den Erwartungswert für die Dauer eines Zeichens, ausgedrückt als Logarithmus zur Basis 10
median information flow (from a source of information), expressed as a binary logarithm
ratio of the median information content divided by the expected value for the duration of a character, expressed as a logarithm to base 2
Quotient mittlerer Informationsgehalt durch den Erwartungswert für die Dauer eines Zeichens, ausgedrückt als Logarithmus zur Basis 2
median information flow (from a source of information), expressed as a natural logarithm
ratio of the median information content divided by the expected value for the duration of a character, expressed as a logarithm to base e
Quotient mittlerer Informationsgehalt durch den Erwartungswert für die Dauer eines Zeichens, ausgedrückt als Logarithmus zur Basis e
London Penetration Depth
"London Penetration Depth" characterizes the distance to which a magnetic field penetrates into a superconductor and becomes equal to 1/e times that of the magnetic field at the surface of the superconductor.
If an applied magnetic field is parallel to the plane surface of a semi-infinite superconductor, the field penetrates the superconductor according to the expression $B(x) = B(0) \exp{(\frac{-x}{\lambda_L})}$, where $B$ is magnetic flux density and $x$ is the distance from the surface.
Loss Angle
$\delta = \arctan d$, where $d$ is loss factor.
loudness
measure of the subjective hearing sensation on a scale extending from soft to loud; a progressive mono-frequency (single-frequency) wave of frequency 1 kHz and sound pressure level 40 dB, directed head-on to hearers is assigned the loudness 1 sone, and a tone which is identified by the listeners as being n-times as loud as that identified by 1 sone is assigned the loudness n sone
Maß für die Stärke der subjektiven Hörempfindung, welche auf einer Skala "leise-laut" in sone skaliert wird; einer frei fortschreitenden monofrequenten Welle mit der Frequenz 1 kHz und dem Schalldruckpegel 40 dB, die frontal auf die Zuhörer trifft, ist die Lautheit 1 sone zugeordnet und ein Laut, welcher von den Zuhörern als n-mal so laut wie derjenige mit 1 sone bezeichnet wird, erhält die Lautheit n sone zugeordnet
loudness level
value specified in phon as a measure of the level of the subjective perception of a sound which corresponds to the sound pressure level of a reference sound specified in dB which comprises a wave coming from the front with a frequency of 1000 Hz and assessed to be just as loud as the noise
in phon angegebener Wert als Maß für die Stärke der subjektiven Wahrnehmung eines Schallvorgange, der zahlenmäßig dem in dB angegebenen Schalldruckpegel eines Referenzschalls entspricht, der aus einer frontal einfallenden ebenen Welle mit der Frequenz 1000 Hz besteht und als gleich laut wie das Geräusch empfunden wird
Luminous Emmitance
"Luminous Emittance" is the luminous flux per unit area emitted from a surface.
Applicable units are those of quantitykind:LuminousFluxPerArea
luminous exitance
$\textit{Luminous Exitance}$ is the ratio of the luminous flux dΦ, leaving an element of the surface containing the point, by the area dA of that element.
Quotient aus dem Lichtstrom dΦ, der ein den Punkt enthaltendes Element der Oberfläche verlässt, und der Fläche dA dieses Elementes
Luminous Exitance is the ratio of the luminous flux dΦ, leaving an element of the surface containing the point, by the area dA of that element.
Mass Delivered
The minimum mass a propulsive system can deliver to a specified target or location. Most mass- delivered requirements have associated Delta-V requirements, effectively specifying the path between the two points.
Mass Growth Allowance
A factor applied to basic mass at the lowest level of design detail available based on type and maturity of hardware according to an approved MGA depletion schedule.
Mass Margin
Requirement minus predicted value. Margin is used as a metric in risk management. Positive margin mitigates the risk of mass increases from requirements maturation and implementation, underestimated predicted system, or subsystem mass.
Mass Property Uncertainty
Variation in predicted MP due to lack of definition, manufacturing variations, environment effects, or accuracy limitation of measuring devices.
Moment of Inertia in the Y axis
The rotational inertia or resistance to change in direction or speed of rotation about a defined axis.
Applicable units are those of quantitykind:MomentOfInertia
Moment of Inertia in the Z axis
Macroscopic Cross-section
"Macroscopic Cross-section" is the sum of the cross-sections for a reaction or process of a specified type over all atoms or other entities in a given 3D domain, divided by the volume of that domain.
$\sum = n_1\sigma_1 + \cdots + n_j\sigma_j +$, where $n_j$ is the number density and $\sigma_j$ the cross-section for entities of type $j$.
Macroscopic Total Cross-section
"Macroscopic Total Cross-section" is the total cross-sections for all atoms or other entities in a given 3D domain, divided by the volume of that domain.
magnetic dipole moment of a molecule
Em = -m•B, where Em is the interaction energy of the molecule with the magnetic dipole moment m and a magnetic field with the magnetic induced flux density B
Em = -m•B, wobei Em die Interaktionsenergie vom Molekül ist mit dem magnetischem Dipolmoment m und einem Magnetfeld mit der magnetischen Induktionsflussdichte B
magnetic flux density or magnetic polarization
field vector B which exhibits a force F on any charged particle which has a velocity v, where the force is the product of the vector product v x B and the electric charge Q of the particle or vector quantity equal to the product of the magnetization M and the magnetic constant µ₀
vektorielle Feldgröße B, die auf jedes geladene Teilchen, das eine Geschwindigkeit v hat, eine Kraft F ausübt, die gleich dem Produkt aus dem Vektorprodukt v x B und der elektrischen Ladung Q des Teilchens ist oder vektorielle Größe gleich dem Produkt aus der Magnetisierung M und der magnetischen Feldkonstante µ₀
Magnetic Polarization
$\text{Magnetic Polarization}$ is a vector quantity equal to the product of the magnetization $M$ and the magnetic constant $\mu_0$.
$J_m = \mu_0 M$, where $\mu_0$ is the magentic constant and $M$ is magnetization.
Magnetization Field
The Magnetization Field is defined as the ratio of magnetic moment per unit volume. It is a vector-valued quantity.
Applicable units are those of quantitykind:LinearElectricCurrentDensity
Mass Amount of Substance
Mass Excess
The "Mass Excess" of a nuclide is the difference between its actual mass and its mass number in atomic mass units. It is one of the predominant methods for tabulating nuclear mass.
$\Delta = m_a - Am_u$, where $m_a$ is the rest mass of the atom, $A$ is its nucleon number, and $m_u$ is the unified atomic mass constant.
mass flux density
product of flow velocity and density
Produkt aus Strömungsgeschwindigkeit und Dichte
Applicable units are those of quantitykind:MassPerAreaTime
Mass Of Electrical Power Supply
Mass Of Solid Booster
Mass Of The Earth
Earth mass is the unit of mass equal to that of the Earth. Earth mass is often used to describe masses of rocky terrestrial planets.
mass-related electrical current
electrical current intensity divided by the associated mass
elektrische Stromstärke dividiert durch die zugehörige Masse
massic power
ratio energy divided by time and related mass
Quotient Energie durch Zeit und durch zugehöriger Masse
massic torque
ratio of torque divided by the mass to be moved
Quotient Drehmoment dividiert durch die Masse, die bewegt oder befördert wird
Maximum Expected Operating Thrust
Max Sea Level Thrust
Maximum Beta-Particle Energy
"Maximum Beta-Particle Energy" is the maximum energy of the energy spectrum in a beta-particle disintegration process.
Maximum Expected Operating Pressure
Maximum Operating Pressure
Mean Energy Imparted
The "Mean Energy Imparted", is the average energy imparted to irradiated matter.
To the matter in a given domain, $\bar{\varepsilon} = R_{in} - R_{out} + \sum Q$, where $R_{in}$ is the radiant energy of all those charged and uncharged ionizing particles that enter the domain, $R_{out}$ is the radiant energy of all those charged and uncharged ionizing particles that leave the domain, and $\sum Q$ is the sum of all changes of the rest energy of nuclei and elementary particles that occur in that domain.
Mean Free Path
"Mean Free Path" is the average distance travelled by a moving particle (such as an atom, a molecule, a photon) between successive impacts (collisions) which modify its direction or energy or other particle properties.
Mean Lifetime
The "Mean Lifetime" is the average length of time that an element remains in the set of discrete elements in a decaying quantity, $N(t)$.
$\tau = \frac{1}{\lambda}$, where $\lambda$ is the decay constant.
Mean Linear Range
"Mean Linear Range" is, in a given material, for specified charged particles of a specified energy, the average displacement of the particles before they stop. That is, the mean totl rectified path length travelled by a particle in the course of slowing down to rest (or to some suitable cut-off energy) in a given substance under specified conditions averaged over a group of particles having the same initial energy.
Mechanical Energy
Mechanical Energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object.
$E = T + V$, where $T$ is kinetic energy and $V$ is potential energy.
Mechanical Impedance
Mechanical surface impedance
Mechanical surface impedance at a surface, is the complex quotient of the total force on the surface by the component of the average sound particle velocity at the surface in the direction of the force
$Z_m = Z_a A^2$, where $A$ is the area of the surface considered and $Z_a$ is the acoustic impedance.
There are various interpretations of MechanicalSurfaceImpedance: Pressure/Velocity - https://apps.dtic.mil/sti/pdfs/ADA315595.pdf, Force / Speed - https://www.wikidata.org/wiki/Q6421317, and (Pressure / Velocity)**0.5 - https://www.sciencedirect.com/topics/engineering/mechanical-impedance. We are seeking a resolution to these differences.
mechanical tension
at a point of a body upon which a force acts which attempts to change the shape of the body, the limit value of the ratio between the force and area of a flat surface around this point when the dimensions approach zero
an einem Punkt eines Körpers, an dem eine Kraft angreift, welche die Form des Körpers zu verändern sucht, der Grenzwert des Quotienten Kraft durch Fläche einer ebenen Oberfläche um diesen Punkt, wenn deren Abmessungen gegen null gehen
Micro Canonical Partition Function
A "Micro Canonical Partition Function" applies to a micro canonical ensemble, in which the system is allowed to exchange heat with the environment at fixed temperature, volume, and a fixed number of particles.
$\Omega = \sum_r 1$, where the sum is over all quantum states consistent with given energy. volume, external fields, and content.
Microbial Formation
Migration Area
"Migration Area" is the sum of the slowing-down area from fission energy to thermal energy and the diffusion area for thermal neutrons.
Migration Length
"Migration Length" is the square root of the migration area.
$M = \sqrt{M^2}$, where $M^2$ is the migration area.
Modulus Of Admittance
"Modulus Of Admittance" is the absolute value of the quantity "admittance".
$Y = \left | \underline{Y} \right |$, where $\underline{Y}$ is admittance.
Moisture Diffusivity
Applicable units are those of quantitykind:VolumeFlowRate
molar density
quantity whose value is inversely proportional to the quantity of material
Größe, deren Wert sich umgekehrt proportional zu Stoffmengenwert verhält
Applicable units are those of quantitykind:MolarEnergy
molar optical rotational ability
material-specific quantity resulting as the specific angle of rotation of a substance for a particular wavelength and a particular temperature from the relationship: ratio between measured angle of rotation divided by the concentration of material and the covered path
materialspezifische Größe, die sich als spezifischer Drehwinkel einer Substanz für eine bestimmte Wellenlänge und eine bestimmte Temperatur ergibt durch die Beziehung: Quotient aus gemessener Drehwinkel dividiert durch die Stoffmenegenkonzentration und die durchstrahlte Wegstrecke
molar thermal capacity
thermal capacity divided by the amount of substance
auf die Stoffmenge bezogene Wärmekapazität
molar thermodynamic energy
energy in relation to the amount of a substance
auf die Stoffmenge bezogene Energie
Mole Fraction
In chemistry, the mole fraction of a component in a mixture is the relative proportion of molecules belonging to the component to those in the mixture, by number of molecules. It is one way of measuring concentration.
Molecular Concentration
The "Molecular Concentration" of substance B is defined as the number of molecules of B divided by the volume of the mixture
$C_B = \frac{N_B}{V}$, where $N_B$ is the number of molecules of $B$ and $V$ is the volume.
motor constant
quantitiy/variable which identifies a characteristic of a motor
Größe, die eine Eigenschaft eines Motors kennzeichnet
Nominal Ascent Propellant Mass
The amount of propellant mass within a stage that is available for impulse for use in nominal payload performance prediction. This mass excludes loaded propellant that has been set aside for off- nominal performance behavior (FPR and fuel bias).
neutral ratio
ratio between two physical variables of the same type, expressed as a number which describes the relationship between these variables where the units are cancelled against each other
Quotient aus zwei physikalischen Größen gleicher Art als Zahl, welche das Verhältnis dieser Größen zueinander ausdrückt, wobei die einheiten gegeneinander gekürzt sind
Neutron Diffusion Length
The neutron diffusion length is equivalent to the relaxation length, that is, to the distance, in which the neutron flux decreases by a factor e
Normal Stress
Normal stress is defined as the stress resulting from a force acting normal to a body surface. Normal stress can be caused by several loading methods, the most common being axial tension and compression, bending, and hoop stress.
$\sigma = \frac{dF_n}{dA}$, where $dF_n$ is the normal component of force and $dA$ is the area of the surface element.
Positive Dimensionless Ratio
A "Normalized Dimensionless Ratio" is a dimensionless ratio ranging from 0.0 to 1.0
Nozzle Throat Cross-sectional Area
Cross-sectional area of the nozzle at the throat.
Nozzle Throat Pressure
Nozzle Walls Thrust Reaction
Nuclear Radius
"Nuclear Radius" is the conventional radius of sphere in which the nuclear matter is included
This quantity is not exactly defined. It is given approximately for nuclei in their ground state only by $R = r_0 A^{\frac{1}{3}}$, where $r_0 \approx 1.2 x 10^{-15} m$ and $A$ is the nucleon number.
Olfactory Threshold
"Olfactory Threshold" are thresholds for the concentrations of various classes of smell that can be detected.
Orbital Angular Momentum per Mass
Angular momentum of the orbit per mass of the vehicle
Orbital Radial Distance
Osmotic Concentration
The "Osmotic Concentration" is the moles of an osmotically active entity (solute) in the volume of a solution.
$osmolarity = \sum_{i} \varphi_i n_i C_i, where \varphi is the osmotic coefficient of the solution n, is the number of particles (e.g. ions), C is the molar concentration of the solute, and i is the index of solute$
Osmotický tlak
osmotischer Druck
osmotic pressure
presión osmótica
فشار اسمزی
pression osmotique
pressione osmotica
Tekanan osmotik
pressão osmótica
ozmotik basıç
渗透压
The "Osmotic Pressure" is the pressure which needs to be applied to a solution to prevent the inward flow of water across a semipermeable membrane.
$\varphi = -(M_A\sum b_B)^{-1} \ln a_A$, where $M_A$ is the molar mass of the solvent $A$, $\sum$ denotes summation over all the solutes, $b_B$ is the molality of solute $B$, and $a_A$ is the activity of solvent $A$.
Over-range distance
Additional distance traveled by a rocket because Of excessive initial velocity.
Predicted Mass
Sum of the basic mass and the MGA. Current prediction of the final mass based on the current requirements and design.
Product of Inertia in the X axis
The quantity kind $\textit{Product of Inertia in the X axis}$ is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
A measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
Product of Inertia in the Y axis
The quantity kind $\textit{Product of Inertia in the Y axis}$ is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
The quantity kind 'Product of Inertia in the Y axis' is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
Product of Inertia in the Z axis
The quantity kind $\textit{Product of Inertia in the Z axis}$ is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
Partial Pressure
The quantity kind $\textit{Partial Pressure}$ is the pressure that the gas would have if it alone occupied the volume of the mixture at the same temperature.
$p_B = x_B \cdot p$, where $x_B$ is the amount-of-substance fraction of substance $B$ and $p$ is the total pressure.
"Partial Pressure" is the pressure that the gas would have if it alone occupied the volume of the mixture at the same temperature.
Particle Current
The quantity kind $\textit{Particle Current}$ can be used to describe the net number of particles passing through a surface in an infinitesimal time interval.
$\int J \cdot e_n dA = \frac{dN}{dt}$, where $e_ndA$ is the vector surface element, $N$ is the net number of particles passing over a surface, and $dt$ describes the time interval.
"Particle Current" can be used to describe the net number of particles passing through a surface in an infinitesimal time interval.
particle current density
The quantity kind $\textit{Particle Current Density}$ is a vector whose component is perpendicular to a surface equal to the net number of particles crossing that surface in the positive direction per unit area and per unit time.
Vektor, dessen Komponente senkrecht zu einer Fläche gleich der Nettoanzahl von Teilchen ist, die flächen- und zeitbezogen in positiver Richtung durch diese Fläche hindurchgehen
Particle Number Density
The "Particle Number Density" is obtained by dividing the particle number of a system by its volume.
$n = \frac{N}{V}$, where $N$ is the number of particles in the 3D domain with the volume $V$.
Particle Position Vector
"Particle Position Vector" is the position vector of a particle.
Path Length
Payload Mass
Payload mass is the mass of the payload carried by the craft. In a multistage spacecraft the payload mass of the last stage is the mass of the payload and the payload masses of the other stages are considered to be the gross masses of the next stages.
Payload Ratio
The payload ratio is defined as the mass of the payload divided by the empty mass of the structure. Because of the extra cost involved in staging rockets, given the choice, it's often more economic to use few stages with a small payload ratio rather than more stages each with a high payload ratio.
Peltier Coefficient
"Peltier Coefficient" represents how much heat current is carried per unit charge through a given material. It is the heat power developed at a junction, divided by the electric current flowing from substance a to substance b.
اختلاف طور
Phasenverschiebungswinkel
phase difference
diferencia de fase
différence de phase
sfasamento angolare
位相差
przesunięcie fazowe
diferença de fase
"Phase Difference" is the difference, expressed in electrical degrees or time, between two waves having the same frequency and referenced to the same point in time. Two oscillators that have the same frequency and different phases have a phase difference, and the oscillators are said to be out of phase with each other. The amount by which such oscillators are out of step with each other can be expressed in degrees from $0^\circ$ to $360^\circ$, or in radians from 0 to ${2\pi}$. If the phase difference is $180^\circ$ ($\pi$ radians), then the two oscillators are said to be in antiphase.
$\varphi = \varphi_u - \varphi_i$, where $\varphi_u$ is the initial phase of the voltage and $\varphi_i$ is the initial phase of the electric current.
déphasage
desfasagem
Phonon Mean Free Path
"Phonon Mean Free Path" is the mean free path of phonons.
Photo Threshold of Awareness Function
"Photo Threshold of Awareness Function" is the ability of the human eye to detect a light that results in a $1^o$ radial angle at the eye with a given duration (temporal summation).
photon luminance
ratio between the photon flux at a point on a surface and in a given direction and the product of the solid angle and the orthogonal projection of this element on a plane perpendicular to the given direction
Quotient aus dem durch eine Fläche in einer Richtung durchgehenden Photonenstrom und dem Produkt aus dem durchstrahlten Raumwinkel und der Projektion dieser Fläche auf eine Ebene senkrecht zur betrachteten Fläche
Flächenlast
Planar Force
Another name for Force Per Area, used by the Industry Foundation Classes (IFC) standard.
Polar moment of inertia
The polar moment of inertia is a quantity used to predict an object's ability to resist torsion, in objects (or segments of objects) with an invariant circular cross-section and no significant warping or out-of-plane deformation. It is used to calculate the angular displacement of an object subjected to a torque. It is analogous to the area moment of inertia, which characterizes an object's ability to resist bending.
Polarization Field
The Polarization Field is the vector field that expresses the density of permanent or induced electric dipole moments in a dielectric material. The polarization vector P is defined as the ratio of electric dipole moment per unit volume.
A "Positive Dimensionless Ratio" is a dimensionless ratio that is greater than zero
Positive Length
"PositiveLength" is a measure of length strictly greater than zero.
Positive Plane Angle
A "PositivePlaneAngle" is a plane angle strictly greater than zero.
طاقة وضع
potenciální energie
potentielle Energie
potential energy
energía potencial
انرژی پتانسیل
énergie potentielle
स्थितिज ऊर्जा
energia potenziale
位置エネルギー
Tenaga keupayaan
Energia potencjalna
energia potencial
Energie potențială
потенциальная энергия
Potansiyel enerji
势能
Energy possessed by a body by virtue of its position in a gravity field in contrast with kinetic energy, that possessed by virtue of its motion.
$V = -\int F \cdot dr$, where $F$ is a conservative force and $R$ is a position vector.
power constant
ratio indicating the relationship between continuous power and continuous current
Verhältnis, das den Zusammenhang zwischen der Dauerkraft zum Dauerstrom kennzeichnet
pressure-based amount-of-substance concentration
ratio between the amount-of-substance of a dissolved material and the mass of its solvent divided by the related pressure
Quotient Molarität (Quotient aus der Stoffmenge eines gelösten Stoffes und dem Volumen der Lösung) dividiert durch den zugehörigen Druck
pressure-based density
ratio of density divided by the related pressure
Quotient aus Dichte dividiert durch den zugehörigen Druck
pressure-based dynamic viscosity
ratio of dynamic viscosity divided by the related pressure
Quotient aus der dynamischen Viskosität dividiert durch den zugehörigen Druck
pressure-based electric current
ratio of electric current divided by the related pressure
Quotient elektrische Stromstärke dividiert durch den zugehörigen Druck
pressure-based electric voltage
ratio of electric voltage divided by the related pressure
Quotient elektrischer Spannung dividiert durch den zugehörigen Druck
pressure-based kinematic viscosity
ratio of dynamic viscosity and density of the material divided by the related pressure
Quotient aus der dynamischen Viskosität und der Dichte eines Stoffes dividiert durch den zugehörigen Druck
pressure-based length
ratio of length divided by the related pressure
Quotient Länge dividiert durch den zugehörigen Druck
pressure-based mass
ratio of mass divided by the related pressure
Quotient Masse dividiert durch den zugehörigen Druck
pressure-based mass flow
ratio of mass flow divided by the related pressure
Quotient Massenstrom dividiert durch den zugehörigen Druck
pressure-based molality
ratio of molality divided by the related pressure
Quotient Molalität dividiert durch den zugehörigen Druck
pressure-based quantity
pressure-based temperature
ratio of temperature divided by the related pressure
Quotient Temperatur dividiert durch den zugehörigen Druck
pressure-based velocity
ratio of velocity divided by the related pressure
Quotient Geschwindigkeit dividiert durch den zugehörigen Druck
pressure-based volume
ratio of volume divided by the related pressure
Quotient Volumen dividiert durch den zugehörigen Druck
pressure-based volume flow
ratio of volume flow divided by the related pressure
Quotient Volumenstrom dividiert durch den zugehörigen Druck
Pressure Burning Rate Constant
Pressure Burning Rate Index
pressure in relation to volume flow
ratio between pressure and the volume flow at a given cross-sectional area, passing through this cross-sectional area
an einer festgelegten Querschnittsfläche der Quotient Druck durch den Volumenstrom, der durch diese Querschnittsfläche hindurchgeht
Propellant Mean Bulk Temperature
quantity of light
work of a light source provided in the form of light as the product of the luminous flux Φ produced by the light source and the time t for which this is radiated
in Form von Licht aufgebrachte Arbeit einer Lichtquelle als Produkt aus dem von der Lichtquelle ausgehenden Lichtstrom Φ und der Zeit t, während dieser ausgestrahlt wird
Reserve Mass
A quantity of mass held by Program/project management to mitigate the risk of over-predicted performance estimates, under predicted mass estimates, and future operational and mission specific requirements (program mass reserve, manager's mass reserve, launch window reserve, performance reserve, etc.).
RF-Power Level
Radio-Frequency Power. Power level of electromagnetic waves alternating at the frequency of radio waves (up to 10^10 Hz).
Applicable units are those of quantitykind:ElectricField
Radial Distance
In classical geometry, the "Radial Distance" is a coordinate in polar coordinate systems (r, $\theta$). Basically the radial distance is the scalar Euclidean distance between a point and the origin of the system of coordinates.
$d = \sqrt{r_1^2 + r_2^2 -2r_1r_2\cos{(\theta_1 - \theta_2)}}$, where $P_1$ and $P_2$ are two points with polar coordinates $(r_1, \theta_1)$ and $(r_2, \theta_2)$, respectively, and $d$ is the distance.
Radiant Emmitance
Irradiance and Radiant Emittance are radiometry terms for the power per unit area of electromagnetic radiation at a surface. "Irradiance" is used when the electromagnetic radiation is incident on the surface. "Radiant emmitance" (or "radiant exitance") is used when the radiation is emerging from the surface.
$M = \frac{d\Phi}{dA}$, where $d\Phi$ is the radiant flux leaving the element of the surface area $dA$.
Radiant Exposure
Radiant exposure is a measure of the total radiant energy incident on a surface per unit area; equal to the integral over time of the radiant flux density. Also known as exposure.
$H = \int_{0}^{\Delta t}{E}{dt}$, where $E$ is the irradiance acting during the time interval with duration $\Delta t$.
Applicable units are those of quantitykind:EnergyPerArea
Radiant Fluence Rate
Radiant fluence rate, or spherical irradiance, is equal to the total radiant flux incident on a small sphere divided by the area of the diametrical cross-section of the sphere.
$E_0 = \int{L}{d\Omega}$, where $d\Omega$ is the solid angle of each elementary beam passing through the given point and $L$ its radiance at that point in the direction of the beam.
قدرة إشعاعية
Strahlungsfluss
radiant flux
potencia radiante
flux énergétique
flusso radiante
放射パワー
moc promieniowania
potência radiante
Radiant Flux, or radiant power, is the measure of the total power of electromagnetic radiation (including infrared, ultraviolet, and visible light). The power may be the total emitted from a source, or the total landing on a particular surface.
$\Phi = \frac{dQ}{dt}$, where $dQ$ is the radiant energy emitted, transferred, or received during a time interval of the duration $dt$.
Strahlungsleistung
radiant power
flujo radiante
puissance rayonnante
potenza radiante
moc promienista
fluxo energético
Radiative Heat Transfer
"Radiative Heat Transfer" is proportional to $(T_1^4 - T_2^4)$ and area of the surface, where $T_1$ and $T_2$ are thermodynamic temperatures of two black surfaces, for non totally black surfaces an additional factor less than 1 is needed.
radioactivity
number of spontaneous nuclear transformations in a defined amount of substance during a sufficiently small period of time divided by this period, expressed as a ratio ∂N/∂t, where ∂N is the expected value for the number of spontaneous transformations from this state within the time period ∂t
Anzahl der spontanen Kernumwandlungen in einer gegebenen Menge eines Stoffes während eines hinreichend kleinen Zeitintervalls, dividiert durch dieses Zeitintervall, ausgedrückt als Quotient ∂N/∂t, wobei ∂N der Erwartungswert für die Anzahl der spontanen Übergänge aus diesem Zustand im Zeitintervall ∂t ist
Radius of Curvature
In geometry, the "Radius of Curvature", R, of a curve at a point is a measure of the radius of the circular arc which best approximates the curve at that point.
Rankine temperature
quantity which uses a temperature scale with a zero value at the absolute temperature zero (0 K) like the Kelvin scale, but, in contrast with it, uses the scale intervals of the Fahrenheit scale
Größe, die eine Temperaturskala benutzt, die wie die Kelvin-Skala beim absoluten Temperatur-Nullpunkt (0 K) ihren Nullwert hat, jedoch im Gegensatz zu dieser den Skalenabstand der Fahrenheit-Skala verwendet
Reaction Energy
"Reaction Energy" in a nuclear reaction, is the sum of the kinetic energies and photon energies of the reaction products minus the sum of the kinetic and photon energies of the reactants.
Reactor Time Constant
The "Reactor Time Constant", also called the reactor period, is the time during which the neutron flux density in a reactor changes by the factor e = 2.718 (e: basis of natural logarithms), when the neutron flux density increases or decreases exponentially.
reciprocal electric resistance
quantity whose value is inversely proportional to the resistance value
Größe, deren Wert sich umgekehrt proportional zum Widerstandswert verhält
reciprocal energy
multiplicative inverse of energy
Kehrwert der Energie
reciprocal plane angle
quantity whose value is inversely proportional to the angle value
Größe, deren Wert sich umgekehrt proportional zum Winkelwert verhält
Reflectivity
For homogeneous and semi-infinite materials, reflectivity is the same as reflectance. Reflectivity is the square of the magnitude of the Fresnel reflection coefficient, which is the ratio of the reflected to incident electric field; as such the reflection coefficient can be expressed as a complex number as determined by the Fresnel equations for a single layer, whereas the reflectance is always a positive real number. For layered and finite media, according to the CIE, reflectivity is distinguished from reflectance by the fact that reflectivity is a value that applies to thick reflecting objects. When reflection occurs from thin layers of material, internal reflection effects can cause the reflectance to vary with surface thickness. Reflectivity is the limit value of reflectance as the sample becomes thick; it is the intrinsic reflectance of the surface, hence irrespective of other parameters such as the reflectance of the rear surface. Another way to interpret this is that the reflectance is the fraction of electromagnetic power reflected from a specific sample, while reflectivity is a property of the material itself, which would be measured on a perfect machine if the material filled half of all space.
Applicable units are those of quantitykind:Reflectance
Relative Atomic Mass
"Relative Atomic Mass " is a dimensionless physical quantity, the ratio of the average mass of atoms of an element (from a given source) to 1/12 of the mass of an atom of carbon-12 (known as the unified atomic mass unit)
Relative Mass Defect
The "Relative Mass Defect" is the mass defect between the monoisotopic mass of an element and the mass of its A + 1 or its A + 2 isotopic cluster.
$B_r = \frac{B}{m_u}$, where $B$ is the mass defect and $m_u$ is the unified atomic mass constant.
Relative Molecular Mass
"Relative Molecular Mass " is equivalent to the numerical value of the molecular mass expressed in unified atomic mass units. The molecular mass (m) is the mass of a molecule.
Relaxation TIme
"Relaxation TIme" is a time constant for exponential decay towards equilibrium.
resistance-based inductance
magnetic flux through the loop, caused by an electric current in the loop, divided by the product of this current and the resistance which prevents the flow of current
Magnetfluss durch die Schleife, verursacht durch einen elektrischen Strom in der Schleife, dividiert durch das Produkt aus diesen Strom und dem Widerstand, der diesen Stromfluss behindert
Resonance Energy
"Resonance Energy" in a nuclear reaction, is the kinetic energy of an incident particle, in the reference frame of the target, corresponding to a resonance in a nuclear reaction.
Resonance Escape Probability For Fission
Fraction of fission neutrons that manage to slow down from fission to thermal energies without being absorbed.
Rest Energy
"Rest Energy" is the energy equivalent of the rest mass of a body, equal to the rest mass multiplied by the speed of light squared.
For a particle, $E_0 = m_0 c_0^2$, where $m_0$ is the rest mass of that particle, and $c_0$ is the speed of light in vacuum.
كتلة ساكنة
Klidová hmotnost
Ruhemasse
rest mass
masa invariante
جرم سکون
masse au repos
निश्चर द्रव्यमान
massa a riposo
不変質量
Jisim rehat
masa spoczynkowa
massa de repouso
masa invariantă
инвариантная масса
Mirovna masa
dinlenme kütlesi
静止质量
The $\textit{Rest Mass}$, the invariant mass, intrinsic mass, proper mass, or (in the case of bound systems or objects observed in their center of momentum frame) simply mass, is a characteristic of the total energy and momentum of an object or a system of objects that is the same in all frames of reference related by Lorentz transformations. The mass of a particle type X (electron, proton or neutron) when that particle is at rest. For an electron: $m_e = 9,109 382 15(45) 10^{-31} kg$, for a proton: $m_p = 1,672 621 637(83) 10^{-27} kg$, for a neutron: $m_n = 1,674 927 211(84) 10^{-27} kg$. Rest mass is often denoted $m_0$.
träge Masse
masse invariante
masse propre
masa niezmiennicza
масса покоя
invariantna masa
lastna masa
Reverberation Time
Reverberation Time is the time required for reflections of a direct sound to decay by 60 dB below the level of the direct sound.
rise of off-state voltage
du/dt as time dependent change in voltage
du/dt als zeitabhängige änderung der Spannung
Rocket Atmospheric Transverse Force
Transverse force on rocket due to an atmosphere
rotary shock
product of the moment of force M in a time interval multiplied by the duration of this interval
Produkt Drehmoment M in einem Zeitintervall mal Dauer dt dieses Zeitintervalls
Rotational Stiffness
Rotational Stiffness is the extent to which an object resists deformation in response to an applied torque.
Applicable units are those of quantitykind:TorquePerAngle
second radiation constant
constant in Planck's radiation law on the dependence of the spectral density of various radiation variables on the wavelength of the electromagnetic radiation and the absolute temperature of the black radiator, derived from the product of Planck's quantum of action times the velocity of light in relation to Boltzmann's constant
Konstante im Planckschen Strahlungsgesetz über die Abhängigkeit der spektralen Dichte verschiedener Strahlungsgrößen von der Wellenlänge der elektromagnetischen Strahlung und der absoluten Temperatur beim schwarzen Strahler, welche sich zusammensetzt aus dem Produkt Plancksches Wirkungsquantum mal Lichtgeschwindigkeit bezogen auf die Boltzmann-Konstante
Second Stage Mass Ratio
Mass ratio for the second stage of a multistage launcher.
Shannon Diversity Index
Information entropy applied to a collection of indiviual organisms [of selected species] in a sample area. A measure of biodiversity.
Applicable units are those of quantitykind:InformationEntropy
Shear Strain
Shear Strain is the amount of deformation perpendicular to a given line rather than parallel to it.
$\gamma = \frac{\Delta x}{d}$, where $\Delta x$ is the parallel displacement between two surfaces of a layer of thickness $d$.
Shear Stress
Shear stress occurs when the force occurs in shear, or perpendicular to the normal.
$\tau = \frac{dF_t}{dA}$, where $dF_t$ is the tangential component of force and $dA$ is the area of the surface element.
Single Stage Launcher Mass Ratio
Slowing-Down Area
"Slowing-Down Area" in an infinite homogenous medium, is one-sixth of the mean square distance between the neutron source and the point where a neutron reaches a given energy.
Slowing-Down Length
"Slowing-Down Length" is the average straight-line distance that a fast neutron will travel between its introduction into the slowing-downmedium (moderator) and thermalization.
Diffusion Length (Solid State Physics)
"Solid State Diffusion Length" is the average distance traveled by a particle, such as a minority carrier in a semiconductor
$L = \sqrt{D\tau}$, where $D$ is the diffusion coefficient and $\tau$ is lifetime.
Sound energy density
Sound energy density is the time-averaged sound energy in a given volume divided by that volume. The sound energy density or sound density (symbol $E$ or $w$) is an adequate measure to describe the sound field at a given point as a sound energy value.
$E = \frac{I}{c}$, where $I$ is the sound intensity in $\frac{W}{m^2}$ and $c$ is the sound speed in $\frac{m}{s}$.
Applicable units are those of quantitykind:EnergyDensity
Sound particle acceleration
In a compressible sound transmission medium - mainly air - air particles get an accelerated motion: the particle acceleration or sound acceleration with the symbol a in $m/s2$. In acoustics or physics, acceleration (symbol: $a$) is defined as the rate of change (or time derivative) of velocity.
$a = \frac{\partial v}{\partial t}$, where $v$ is sound particle velocity and $t$ is time.
Sound Particle Displacement
Sound Particle Displacement is the nstantaneous displacement of a particle in a medium from what would be its position in the absence of sound waves.
القدرة الصوتية
Schallleistung
sound power
potencie acústica
puissance acoustique
potenza sonora
音源の音響出力
moc akustyczna
potência acústica
звуковая мощность
Sound power or acoustic power $P_a$ is a measure of sonic energy $E$ per time $t$ unit. It is measured in watts and can be computed as sound intensity ($I$) times area ($A$).
$P_a = IA$, where $I$ is the sound intensity in $\frac{W}{m^2}$ and $A$ is the area in $m^2$.
potência sonora
Source Voltage
The quantity kind $\textit{Source Voltage}$, also referred to as $\textit{Source Tension}$ is the voltage between the two terminals of a voltage source when there is no electric current through the source. The name $\text{electromotive force}$ with the abbreviation $\textit{EMF}$ and the symbol $E$ is deprecated.
Applicable units are those of quantitykind:Voltage
Source Voltage Between Substances
"Source Voltage Between Substances" is the source voltage between substance a and b.
Spatial Summation Function
"Spatial Summation Function" is he ability to produce a composite signal from the signals coming into the eyes from different directions.
Specific Energy Imparted
The "Specific Energy Imparted", is the energy imparted to an element of irradiated matter divided by the mass, dm, of that element.
For ionizing radiation, $z = \frac{\varepsilon}{m}$, where $\varepsilon$ is the energy imparted to irradiated matter and $m$ is the mass of that matter.
Specific Heats Ratio
The ratio of specific heats, for the exhaust gases adiabatic gas constant, is the relative amount of compression/expansion energy that goes into temperature $T$ versus pressure $P$ can be characterized by the heat capacity ratio: $\gamma\frac{C_P}{C_V}$, where $C_P$ is the specific heat (also called heat capacity) at constant pressure, while $C_V$ is the specific heat at constant volume.
Specific Impulse by Mass
Specific Impulse by Weight
specific optical rotational ability
material-specific quantity, which results as angle of rotation of a substance for a defined wavelength and a defined temperature from the relation: quotient of measured angle of rotation divided by the mass concentration and the radiographed distance
materialspezifische Größe, die sich als Drehwinkel einer Substanz für eine bestimmte Wellenlänge und eine bestimmte Temperatur ergibt durch die Beziehung: Quotient aus gemessener Drehwinkel dividiert durch die Massenkonzentration und die durchstrahlte Wegstrecke
Specific thrust
Specific impulse (usually abbreviated Isp) is a way to describe the efficiency of rocket and jet engines. It represents the force with respect to the amount of propellant used per unit time.[1] If the "amount" of propellant is given in terms of mass (such as kilograms), then specific impulse has units of velocity. If it is given in terms of Earth-weight (such as kiloponds), then specific impulse has units of time. The conversion constant between the two versions of specific impulse is g. The higher the specific impulse, the lower the propellant flow rate required for a given thrust, and in the case of a rocket the less propellant is needed for a given delta-v per the Tsiolkovsky rocket equation.
spectral concentration of radiant energy density
energy distribution of the instantaneous value of radiant energy in relation to the volume of the propagation medium
Energieverteilung des Augenblickswertes der Strahlungsenergie, bezogen auf das Volumen des Ausbreitungsmediums
spectral concentration of vibrational modes (in terms of angular frequency)
number of vibrational modes in an infinitesimal interval of angular frequency, divided by the size of that interval and by volume
Anzahl von Vibrationsmodi in einem infinitesimalen Energie-Intervall der Kreisfrequenz, dividiert durch die Größe dieses Energie-Intervalls und durch das zugehörige Volumen
Spectral Luminous Efficiency
The Spectral Luminous Efficiency is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power. A common choice is to choose units such that the maximum possible efficacy, 683 lm/W, corresponds to an efficiency of 100%.
$V(\lambda) = \frac{\Phi_\lambda(\lambda_m)}{\Phi_\lambda(\lambda)}$, where $\Phi_\lambda(\lambda_m)$ is the spectral radiant flux at wavelength $\lambda_m$ and $\Phi_\lambda(\lambda)$ is the spectral radiant flux at wavelength $\lambda$, such that both radiations produce equal luminous sensations under specified photometric conditions and $\lambda_m$ is chosen so that the maximum value of this ratio is equal to 1.
spectral radiant energy density in terms of wavelength
سرعة الضوء
Rychlost světla
Lichtgeschwindigkeit
speed of light
velocidad de la luz
سرعت نور
vitesse de la lumière
प्रकाश का वेग
velocità della luce
光速
Kelajuan cahaya
Prędkość światła
Velocidade da luz
Viteza luminii
Скорость света
Hitrost svetlobe
Işık hızı
The quantity kind $\text{Speed of Light}$ is the speed of electomagnetic waves in a given medium.
Applicable units are those of quantitykind:Speed
Speed Ratio
Speed ratio generally refers to the ratio of the rotational speeds of two interconnected rotating components, but it sometimes relates linear speeds.
Illuminance
Spherical illuminance is equal to quotient of the total luminous flux $\Phi_v$ incident on a small sphere by the cross section area of that sphere.
$E_v,0 = \int_{4\pi sr}{L_v}{d\Omega}$, where $d\Omega$ is the solid angle of each elementary beam passing through the given point and $L_v$ is its luminance at that point in the direction of the beam.
لف مغزلي
spin
Spin
espín
اسپین/چرخش
スピン角運動量
Спин
自旋
In quantum mechanics and particle physics "Spin" is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei.
Applicable units are those of quantitykind:AngularMomentum
Stage Propellant Mass
Stage Structure Mass
Standard Chemical Potential
"Standard Chemical Potential" is the value of the chemical potential at standard conditions
state density
function of energy in a solid, determined by the number of permissible quantum states in the energy range between E and E+dE per volume of material of this solid
Funktion der Energie in einem Festkörper, bestimmt durch die Anzahl von erlaubten Quantenzuständen im Energiebereich zwischen E und E+dE je Volumen des Materials dieses Festkörpers
state density as expression of angular frequency)
state density as expression of angular frequency
ratio between number of vibration modes in an infinitesimal interval of the angular frequency and the length of this interval and the volume
Quotient aus Anzahl von Vibrationsmodi in einem infinitesimalen Intervall der Kreisfrequenz durch die Spannweite dieses Intervalls und das Volumen
StateOfCharge
"State of Charge",quantifies the remaining capacity available in a battery at a given time and in relation to a given state of ageing.
""State of Charge",quantifies the remaining capacity available in a battery at a given time and in relation to a given state of ageing.
Static Friction
Static friction is friction between two or more solid objects that are not moving relative to each other. For example, static friction can prevent an object from sliding down a sloped surface.
Static Friction Coefficient
$\mu = \frac{F_max}{N}$, where $F_max$ is the maximum tangential component of the contact force and $N$ is the normal component of the contact force between two bodies at relative rest.
Strain Energy Density
Defined as the 'work done' for a given strain, that is the area under the stress-strain curve after a specified eation. Source(s): http://www.prepol.com/product-range/product-subpages/terminology
Structural Efficiency
Structural efficiency is a function of the weight of structure to the afforded vehicle's strength.
Superconductor Energy Gap
"Superconductor Energy Gap" is the width of the forbidden energy band in a superconductor.
توتر سطحي
povrchové napětí
Oberflächenspannung
surface tension
tensión superficial
کشش سطحی
tension superficielle
पृष्ठ तनाव
tensione superficiale
表面張力
Tegangan permukaan
napięcie powierzchniowe
tensão superficial
Tensiune superficială
поверхностное натяжение
površinska napetost
Yüzey gerilimi
表面张力
"Surface Tension" is a contractive tendency of the surface of a liquid that allows it to resist an external force.
$\gamma = \frac{dF}{dl}$, where $F$ is the force component perpendicular to a line element in a surface and $l$ is the length of the line element.
tension de surface
surge impedance of the medium
in a mechanical system the area-related quotient of a force affecting to a point divided by the resulting component of the particle velocity in direction of the force
in einem mechanischen System der flächenbezogene Quotient einer an einem Punkt angreifenden Kraft durch die resultierende Komponente der Teilchengeschwindigkeit in Richtung der Kraft
Susceptance
"Susceptance" is the imaginary part of admittance. The inverse of admittance is impedance and the real part of admittance is conductance.
$B = \lim{\underline{Y}}$, where $\underline{Y}$ is admittance.
symbol transmission rate
rate, at which a symbol, consisting of one or more bits, is transmitted per second
Geschwindigkeit, mit der ein aus mehreren Bit bestehendes Symbol je Sekunde übertragen wird
Target Bogie Mass
An informal mass limit established by a Project Office (at the Element Integrated Product Team (IPT) level or below) to control mass.
temperature-based amount-of-substance concentration
ratio of material concentration divided by the related temperature
Quotient aus Stoffmengenkonzentration dividiert durch die zugehörige Temperatur
temperature-based density
ratio of density divided by the related temperature
Quotient aus Dichte dividiert durch die zugehörige Temperatur
temperature-based dynamic viscosity
ratio of dynamic viscosity, divided by temperature
Quotient der dynamischen Viskosität dividiert durch die Temperatur
temperature-based kinematic viscosity
ratio of dynamic viscosity and the density of a material, divided by the related temperature
Quotient aus der dynamischen Viskosität und der Dichte eines Stoffes dividiert durch die zugehörige Temperatur
temperature-based length
ratio of length divided by the related temperature
Quotient aus Länge dividiert durch die zugehörige Temperatur
temperature-based mass
ratio of mass divided by the related temperature
Quotient aus Masse dividiert durch die zugehörige Temperatur
temperature-based mass flow rate
ratio of mass flow divided by the related temperature
Quotient aus Massenstrom dividiert durch die zugehörige Temperatur
temperature-based quantity
temperature-based velocity
ratio of velocity divided by the related temperature
Quotient aus Geschwindigkeit dividiert durch die zugehörige Temperatur
temperature-based volume flow rate
ratio of volume flow divided by the related temperature
Quotient aus Volumenstrom dividiert durch die zugehörige Temperatur
Temperaturdifferenz
temperature difference
Temperature difference (Delta T) is the difference of temperatures between two measuring points
Temperature Rate of Change
The "Temperature Rate of Change" measures the difference of a temperature per time (positive: rise, negative: fall), as for instance used with heat sensors. It is for example measured in K/s.
Applicable units are those of quantitykind:TemperaturePerTime
temperature-related molar mass
molarity (mass of a substance in relation to the amount of this substance) divided by temperature
Molarität (Masse einer Substanz bezogen auf die Stoffmenge dieser Substanz ) dividiert durch die Temperatur
temperature-related volume
volume divided by temperature
Volumen dividiert durch Temperatur
Tension
Thermal Admittance
The heat transfer coefficient is also known as thermal admittance in the sense that the material may be seen as admitting heat to flow.
Applicable units are those of quantitykind:CoefficientOfHeatTransfer
thermal coefficient of linear expansion
median relative change in length over a specific length of the test piece, divided by the temperature range caused by it
auf eine festgelegte Länge des Probekörpers bezogene mittlere relative Längenänderung dividiert durch die sie verursachende Temperaturänderung
Thermal Diffusivity
In heat transfer analysis, thermal diffusivity (usually denoted $\alpha$ but $a$, $\kappa$,$k$, and $D$ are also used) is the thermal conductivity divided by density and specific heat capacity at constant pressure. The formula is: $\alpha = {k \over {\rho c_p}}$, where k is thermal conductivity ($W/(\mu \cdot K)$), $\rho$ is density ($kg/m^{3}$), and $c_p$ is specific heat capacity ($\frac{J}{(kg \cdot K)}$) .The denominator $\rho c_p$, can be considered the volumetric heat capacity ($\frac{J}{(m^{3} \cdot K)}$).
$a = \frac{\lambda}{\rho c_\rho}$, where $\lambda$ is thermal conductivity, $\rho$ is mass density and $c_\rho$ is specific heat capacity at constant pressure.
Thermal Efficiency
Thermal efficiency is a dimensionless performance measure of a thermal device such as an internal combustion engine, a boiler, or a furnace. The input to the device is heat, or the heat-content of a fuel that is consumed. The desired output is mechanical work, or heat, or possibly both.
thermal insulation
temperature difference between two surfaces divided by areic heat flow rate in the direction of the temperature gradient
Temperaturdifferenz zwischen zwei Oberflächen dividiert durch den flächenbezogenen Wärmestrom in der Richtung des Temperaturgradienten
Thermal Transmittance
Thermal transmittance is the rate of transfer of heat through matter. The thermal transmittance of a material (such as insulation or concrete) or an assembly (such as a wall or window) is expressed as a U-value. The concept of thermal transmittance is closely related to that of thermal resistance. The thermal resistance of a structure is the reciprocal of its thermal transmittance.
Thermal Utilization Factor For Fission
Probability that a neutron that gets absorbed does so in the fuel material.
Thermodynamic Critical Magnetic Flux Density
"Thermodynamic Critical Magnetic Flux Density" is the maximum magnetic field strength below which a material remains superconducting.
$G_n - G_s = \frac{1}{2}\frac{B_c^2 \cdot V}{\mu_0}$, where $G_n$ and $G_s$ are the Gibbs energies at zero magnetic flux density in a normal conductor and superconductor, respectively, $\mu_0$ is the magnetic constant, and $V$ is volume.
Applicable units are those of quantitykind:MagneticFluxDensity
Thermodynamic Entropy
Thermodynamic Entropy is a measure of the unavailability of a system’s energy to do work. It is a measure of the randomness of molecules in a system and is central to the second law of thermodynamics and the fundamental thermodynamic relation, which deal with physical processes and whether they occur spontaneously. The dimensions of entropy are energy divided by temperature, which is the same as the dimensions of Boltzmann's constant ($kB$) and heat capacity. The SI unit of entropy is $joule\ per\ kelvin$. [Wikipedia]
Applicable units are those of quantitykind:EnergyPerTemperature
Thickness
"Thickness" is the the smallest of three dimensions: length, width, thickness.
Thrust Coefficient
The thrust force of a jet-propulsion engine per unit of frontal area per unit of incompressible dynamic pressure
Thrust To Weight Ratio
Thrust-to-weight ratio is a ratio of thrust to weight of a rocket, jet engine, propeller engine, or a vehicle propelled by such an engine. It is a dimensionless quantity and is an indicator of the performance of the engine or vehicle.
Tilt
The angle between an object's orientation vector relative to a reference frame. In the context of architecture, this would refer to the angle between the ground and the face of a surface.
Time averaged sound intensity
Sound intensity or acoustic intensity ($I$) is defined as the sound power $P_a$ per unit area $A$. The usual context is the noise measurement of sound intensity in the air at a listener's location as a sound energy quantity.
$I = \frac{1}{t2 - t1} \int_{t1}^{t2}i(t)dt$, where $t1$ and $t2$ are the starting and ending times for the integral and $i$ is sound intensity.
time-related logarithmic ratio
logarithm of the ratio of the value of a defined variable to the value of a reference variable of the same type, divided by the related time
Logarithmus des Verhältnisses des Werts einer gegebenen Größe zum Wert einer Bezugsgröße gleicher Art dividiert durch die zugehörige Zeit
torque constant
product of magnetic induction, number of turns per unit length, and the area enclosed by the coil corresponding to the gradient of the curve representing the ratio between the torque of the motor and the current
Produkt aus der magnetischen Induktion, der Windungszahl und der von der Spule eingeschlossenen Fläche entsprechend der Steigung der Kurve des Verhältnisses Drehmoment des Motors zum Strom
Total Angular Momentum
"Total Angular Momentum" combines both the spin and orbital angular momentum of all particles and fields. In atomic and nuclear physics, orbital angular momentum is usually denoted by $l$ or $L$ instead of $\Lambda$. The magnitude of $J$ is quantized so that $J^2 = \hbar^2 j(j + 1)$, where $j$ is the total angular momentum quantum number.
Total Cross-section
"Total Cross-section" is related to the absorbance of the light intensity through Beer-Lambert's law. It is the sum of all cross-sections corresponding to the various reactions or processes between an incident particle of specified type and energy and a target particle.
Total Pressure
The total pressure is the sum of the dynamic and static pressures, that is $P_0 = P + q$.
total radiance
ratio between the differential change in the energy fluence dΨ and the time interval dt: ψ = dΨ / dt; the total radiance is identical to the product of the particle flux density and the average energy of the particles
Quotient aus der differentiellen Änderung der Energiefluenz dΨ im Zeitintervall dt: ψ = dΨ / dt; die Energieflussdichte ist identisch mit dem Produkt der Teilchenflussdichte und der mittleren Teilchenenergie
Touch Thresholds
"Touch Thresholds" are thresholds for touch, vibration and other stimuli to the skin.
traffic intensity
number of all simultaneously occupied units in a particular group of units
Anzahl aller gleichzeitig belegten Einrichtungen in einer bestimmten Gruppe von einrichtungen
transmission ratio between rotation and translation
relationship between rotational and longitudinal movements as a measure of how an angle is converted into a linear path
Zusammenhang zwischen Dreh- und Längsbewegung als Maß dafür, wie ein überstrichener Drehwinkel in eine lineare Wegstrecke umgesetzt wird
Transmittance
Transmittance is the fraction of incident light (electromagnetic radiation) at a specified wavelength that passes through a sample.
$\tau = \frac{\Phi_t}{\Phi_m}$, where $\Phi_t$ is the transmitted radiant flux or the transmitted luminous flux, and $\Phi_m$ is the radiant flux or luminous flux of the incident radiation.
True Exhaust Velocity
Vertical Velocity
The rate at which a body moves upwards at an angle of 90 degrees to the ground. It is the component of a projectile's velocity which is concerned with lifting the projectile.
Visible Radiant Energy
"Visible Radiant Energy", also known as luminous energy, is the energy of electromagnetic waves. It is energy of the particles that are emitted, transferred, or received as radiation.
Vision Thresholds
"Vision Thresholds" is an abstract term to refer to a variety of measures for the thresholds of sensitivity of the eye.
"Vision Thresholds" is the thresholds of sensitivity of the eye.
volume density of charge
volume density of the electric charge Q present in a volume V
räumliche Dichte der in einem Raumgebiet vom Volumen V enthaltenen elektrischen Ladung Q
Volume Flow Ratio
Volume flow ratio is commonly used in fluid dynamics and engineering, referring to the ratio of the flow rates of two or more fluid streams within a system. In HVAC systems, the flow ratio could compare the amount of fresh air introduced to the amount of recirculated air.
volume or section modulus
domain completely enclosed by a surface, which can be determined for Cartesian coordinates by integration according to the following equation: V = ∫∫∫ dx dy dz or for a homogeneous material, it is the ratio of the moment of inertia and the distance to any point on the neutral axis at which the stress is to be calculated
der von einer Oberfläche eingeschlossene gesamte Rauminhalt, der für kartesische Koordinaten durch Integration nach folgender Gleichung ermittelt werden kann: V = ∫∫∫ dx dy dz oder bei einem homogenen Werkstoff Quotient Trägheitsmoment dividiert durch den Abstand zu einem Punkt auf der neutralen Achse, bei dem die Belastung berechnet werden soll
Volume Strain
Volume, or volumetric, Strain, or dilatation (the relative variation of the volume) is the trace of the tensor $\vartheta$.
$\vartheta = \frac{\Delta V}{V_0}$, where $\Delta V$ is the increase in volume and $V_0$ is the volume in a reference state to be specified.
volumetric entity density
quantity whose value is inversely proportional to the volume value
Größe, deren Wert sich umgekehrt proportional zum Volumenwert verhält
volumic amount of substance
quantity proportional to the number of single particles of a defined type present in a given sample, divided by the related volume of this sample
Größe proportional der Anzahl von Einzelteilchen festgelegter Art, die in einer gegebenen Substanzprobe enthalten sind, dividiert durch das zugehörige Volumen dieser Substanzprobe
volumic data quantity
amount of data, which is usually dependent on the respective complexity of the information or its coding procedure, divided by the related volume
Anzahl von Daten, die in der Regel abhängig von der jeweiligen Komplexität der Information oder deren Codierungsverfahren ist, dividiert durch das zugehörige Volumen
volumic output
ratio released power divided by volume
Quotient freigesetzte Wärmeleistung durch Volumen
Vorticity
In the simplest sense, vorticity is the tendency for elements of a fluid to "spin." More formally, vorticity can be related to the amount of "circulation" or "rotation" (or more strictly, the local angular rate of rotation) in a fluid. The average vorticity in a small region of fluid flow is equal to the circulation C around the boundary of the small region, divided by the area A of the small region. Mathematically, vorticity is a vector field and is defined as the curl of the velocity field.
Applicable units are those of quantitykind:AngularVelocity
Warm Receptor Threshold
"Warm Receptor Threshold" is the threshold of warm-sensitive free nerve-ending.
Water Horsepower
No pump can convert all of its mechanical power into water power. Mechanical power is lost in the pumping process due to friction losses and other physical losses. It is because of these losses that the horsepower going into the pump has to be greater than the water horsepower leaving the pump. The efficiency of any given pump is defined as the ratio of the water horsepower out of the pump compared to the mechanical horsepower into the pump.
Vlnové délka
Wellenlänge
wavelength
longitud de onda
طول موج
longueur d'onde
lunghezza d'onda
Jarak gelombang
comprimento de onda
длина волны
dalga boyu
波长
For a monochromatic wave, "wavelength" is the distance between two successive points in a direction perpendicular to the wavefront where at a given instant the phase differs by $2\pi$. The wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats. The SI unit of wavelength is the meter.
$\lambda = \frac{c}{\nu}$, where $\lambda$ is the wave length, $\nu$ is the frequency, and $c$ is the speed of light in the medium.
عدد الموجة
Vlnové číslo
Repetenz
wavenumber
número de ola
عدد موج
nombre d'onde
numero d'onda
波数
Bilangan gelombang
Liczba falowa
número de onda
Волновое число
valovno število
dalga sayısı
"Wavenumber" is the spatial frequency of a wave - the number of waves that exist over a specified distance. More formally, it is the reciprocal of the wavelength. It is also the magnitude of the wave vector. Light passing through different media keeps its frequency, but not its wavelength or wavenumber. The unit for wavenumber commonly used in spectroscopy is centimetre to power minus one, PER-CM, rather than metre to power minus one, PER-M.
$\sigma = \frac{\nu}{c}$, where $\sigma$ is the wave number, $\nu$ is the frequency, and $c$ is the speed of light in the medium. Or: $k = \frac{2\pi}{\lambda}= \frac{2\pi\upsilon}{\upsilon_p}=\frac{\omega}{\upsilon_p}$, where $\upsilon$ is the frequency of the wave, $\lambda$ is the wavelength, $\omega = 2\pi \upsilon$ is the angular frequency of the wave, and $\upsilon_p$ is the phase velocity of the wave.
Applicable units are those of quantitykind:InverseLength
Wellenzahl
Web Time
Web Time Average Pressure
Web Time Average Thrust
وزن
tíha
Gewicht
weight
peso
poids
forza peso
重さ
Berat
Siła ciężkości
greutate
Вес
Ağırlık
重量
The force with which a body is attracted toward an astronomical body. Or, the product of the mass of a body and the acceleration acting on a body. In a dynamic situation, the weight can be a multiple of that under resting conditions. Weight also varies on other planets in accordance with their gravity.
Wet Bulb Temperature
The temperature of a parcel of air cooled to saturation (100% relative humidity) by the evaporation of water into it, with the latent heat supplied by the parcel.
Width
"Width" is the middle of three dimensions: length, width, thickness.
Work Function
"Work Function" is the energy difference between an electron at rest at infinity and an electron at a certain energy level. The minimum energy (usually measured in electronvolts) needed to remove an electron from a solid to a point immediately outside the solid surface (or energy needed to move an electron from the Fermi level into vacuum).
Dalton
The unified atomic mass unit (symbol: $\mu$) or dalton (symbol: Da) is a unit that is used for indicating mass on an atomic or molecular scale. It is defined as one twelfth of the rest mass of an unbound atom of carbon-12 in its nuclear and electronic ground state, and has a value of $1.660538782(83) \times 10^{-27} kg$. One $Da$ is approximately equal to the mass of one proton or one neutron. The CIPM have categorised it as a "non-SI unit whose values in SI units must be obtained experimentally".
Debye
"Debye" is a C.G.S System unit for 'Electric Dipole Moment' expressed as $D$.
Denier
Denier or den is a unit of measure for the linear mass density of fibers. It is defined as the mass in grams per 9,000 meters. In the International System of Units the tex is used instead (see below). The denier is based on a natural standard: a single strand of silk is approximately one denier. A 9,000-meter strand of silk weighs about one gram. The term denier is from the French denier, a coin of small value (worth 1/12 of a sou). Applied to yarn, a denier was held to be equal in weight to 1/24 of an ounce. The term microdenier is used to describe filaments that weigh less than one gram per 9,000 meter length.
1,000,000,000,000,000,000-fold of the product of the SI base unit volt with the SI base unit ampere
Gamma
"Gamma" is a C.G.S System unit for 'Magnetic Field'.
1,000,000,000-fold of the product of the SI base unit volt with the SI base unit ampere
0.000000001 of the unit volt ampere reactive
The $gauss$, abbreviated as $G$, is the cgs unit of measurement of a magnetic field $B$, which is also known as the "magnetic flux density" or the "magnetic induction". One gauss is defined as one maxwell per square centimeter; it equals $10^{-4} tesla$ (or $100 micro T$). The Gauss is identical to maxwells per square centimetre; technically defined in a three-dimensional system, it corresponds in the SI, with its extra base unit the ampere. The gauss is quite small by earthly standards, 1 Gs being only about four times Earth's flux density, but it is subdivided, with $1 gauss = 105 gamma$. This unit of magnetic induction is also known as the $\textit{abtesla}$.
Kilovolt Ampere
1 000-fold of the product of the SI derived unit volt and the SI base unit ampere
product of the 1,000-fold of the SI derived unit volt and the SI base unit ampere divided by the SI base unit kelvin
Kilovolt Ampere Reactive
1,000-fold of the unit volt ampere reactive divided by the SI base unit kelvin
Million US Dollars per Flight
Megavolt Ampere
1,000,000-fold of the product of the SI derived unit volt and the SI base unit ampere
Megavolt Ampere Reactive
1,000,000-fold of the unit volt ampere reactive
0.000001-fold of the product of the SI base unit volt with the SI base unit ampere
product of the 0.000001-fold of the SI derived unit volt and the SI base unit ampere divided by the SI base unit kelvin
0.000001 of the unit volt ampere reactive
0.000001-fold of the unit volt ampere reactive divided by the SI base unit kelvin
0.001-fold of the product of the SI base unit volt with the SI base unit ampere
product of the 0.001-fold of the SI derived unit volt and the SI base unit ampere divided by the SI base unit kelvin
0.001-fold of the unit volt ampere reactive divided by the SI base unit kelvin
Million US Dollars per Year
0.000000001-fold of the product of the SI base unit volt with the SI base unit ampere
0.000000001-fold of the unit volt ampere reactive
Reciprocal Kilovolt Ampere Hour
reciprocal of the 1,000-fold of the product of the SI derived unit volt and the SI base unit ampere and the unit hour
reciprocal of the product of the SI derived unit volt, the SI base unit ampere and the SI base unit second
hundredth relating to the co-efficient 100,000
hundredth relating to the co-efficient 10,000
hundredth relating to the co-efficient 100
hundredth relating to the co-efficient 1,000
Parts per trillion by volume
Pennyweight
non SI-conforming unit of mass which comes from the Anglo-American Troy or Apothecaries' Weight System of units according to NIST of 1 pwt = 1.555174 10^3 kg
1,000,000,000,000,000-fold of the product of the SI base unit volt with the SI base unit ampere
0.000000000001-fold of the product of the SI base unit volt with the SI base unit ampere
0.000000000001-fold of the unit volt ampere reactive
Standard
non SI-conform unit of the volume of readily finished wood material : 1 standard = 1,980 board feet or approximate 4.672 cubic metre
1,000,000,000,000-fold of the product of the SI base unit volt with the SI base unit ampere
0.000000000001 of the unit volt ampere reactive
فولت. أمبير
Voltampere
volt ampere
voltiamperio
voltampère
volt-ampere
вольт-ампер
product of the SI derived unit volt and the SI base unit ampere
product of the SI derived unit volt and the SI base unit ampere divided by the SI base unit kelvin
Volt Ampere Reactive
unit with special name for reactive power
unit volt ampere reactive divided by the SI base unit kelvin
Failures In Time
Ablutions Room
A room for performing cleansing rituals before prayer
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Ablutions_Room
Absolute Humidity Sensor
Measures the present state of absolute humidity
Absorption Chiller
A chiller that utilizes a thermal or/and chemical process to produce the refrigeration effect necessary to provide chilled water. There is no mechanical compression of the refrigerant taking place within the machine, as occurs within more traditional vapor compression type chillers.
Brick-defined quantity 'Acceleration_Time' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/Time' directly.
Acceleration Time Setpoint
Access Reader
Active Chilled Beam
A Chilled Beam with an integral primary air connection that induces air flow through the device.
Active Power Sensor
Measures the portion of power that, averaged over a complete cycle of the AC waveform, results in net transfer of energy in one direction
Air Cooled Chiller
A chiller that uses air to cool the refrigerant, used in various commercial and industrial cooling applications
Air Flow Loss Alarm
An alarm that indicates loss in air flow.
Air Loop
The set of connected equipment serving one path of air
Alarm Delay Parameter
A parameter determining how long to delay an alarm after sufficient conditions have been met
Alternating Current Frequency
The frequency of the oscillations of alternating current
Ammonia Sensor
Brick-defined quantity 'Atmospheric_Pressure' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/AtmosphericPressure' directly.
Atrium
a large open-air or skylight covered space surrounded by a building.
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Atrium
Auditorium
A space for performances or larger gatherings
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Auditorium
Automatic Mode Command
Controls whether or not a device or controller is operating in "Automatic" mode
Automatic Tint Window
A window with tint control.
Automatic Tint Window Array
An array of Automatic Tint Windows.
Automatic Transfer Switch
An automatic transfer switch (ATS) is a device that automatically transfers a power supply from its primary source to a backup source when it senses a failure or outage in the primary source.
Availability Status
Indicates if a piece of equipment, system, or functionality is available for operation
Average Cooling Demand Sensor
Measures the average power consumed by a cooling process as the amount of power consumed over some interval
Average Exhaust Air Static Pressure Sensor
The computed average static pressure of air in exhaust regions of an HVAC system over some period of time
Average Heating Demand Sensor
Measures the average power consumed by a heating process as the amount of power consumed over some interval
Average Zone Air Temperature Sensor
The computed average temperature of air in a zone, over some period of time
Backflow Preventer Valve
Valve designed to prevent the reverse flow of fluid, typically water, thereby protecting potable water supplies from contamination or pollution.
Basement
The floor of a building which is partly or entirely below ground level.
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:BasementLevel
Battery
A container that stores chemical energy that can be converted into electricity and used as a source of power
Battery Energy Storage System
A collection of batteries that provides energy storage, along with their supporting equipment
Battery Room
A room used to hold batteries for backup power
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:ElectricityRoom
Battery Voltage Sensor
Measures the capacity of a battery
Bench Space
For areas of play in a stadium, the area for partcipants and referees by the side of the field
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider creating a rec:Zone that is part of a rec:Stadium
Blind
A window covering.
Blind Group
A group of Blinds commonly attached to a single controller.
Boiler Command
A command to control a boiler
Booster Fan
Fan activated to increase airflow beyond what is provided by the default configuration
Box Mode Command
Branch Selector
A device in VRF systems that regulates the flow of refrigerant to different indoor units or branches, ensuring optimal distribution of heating or cooling according to the specific requirements of each zone or area in the building.
Breaker Panel
Breaker Panel distributes power into various end-uses.
Broadcast Room
A space to organize and manage a broadcast. Separate from studio
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:RecordingRoom
Building Air Humidity Setpoint
Setpoint for humidity in a building
Building Air Static Pressure Sensor
The static pressure of air within a building
Building Air Static Pressure Setpoint
Sets static pressure of the entire building
Building Chilled Water Meter
A meter that measures the usage or consumption of chilled water of a whole building
Building Disconnect Switch
Building Electrical Meter
A meter that measures the usage or consumption of electricity of a whole building
Building Gas Meter
A meter that measures the usage or consumption of gas of a whole building
Building Hot Water Meter
A meter that measures the usage or consumption of hot water of a whole building
Building Water Meter
A meter that measures the usage or consumption of water of a whole building
Bus Riser
Bus Risers are commonly fed from a switchgear and rise up through a series of floors to the main power distribution source for each floor.
Bypass Air Flow Sensor
Measures the rate of flow of bypass air
Bypass Air Humidity Setpoint
Humidity setpoint for bypass air
Bypass Command
Bypass Damper
A bypass damper is a type of damper that is employed in forced-air bypass applications to reduce the buildup of static pressure, usually when certain zone dampers are closed.
Bypass Water Flow Sensor
Measures the rate of flow of bypass water
Bypass Water Flow Setpoint
Sets the target flow rate of bypass water
CO2 Alarm Sensitivity Parameter
A parameter indicates the sensitivity to activate a CO2 alarm.
CO2 Differential Sensor
Measures the difference between CO2 levels of inside and outside air
CO Differential Sensor
CO Level Sensor
Measures the concentration of CO
Cafeteria
A space to serve food and beverages
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:CafeteriaRoom
Capacity Sensor
Capillary Tube Metering Device
A fixed orifice device in refrigeration systems that controls refrigerant flow based on its diameter and length, without moving parts
Cassette Fan Coil Unit
A type of fan coil unit installed within the ceiling void, typically using a cassette for air delivery
Ceiling Fan
A fan installed on the ceiling of a room for the purpose of air circulation
Centrifugal Chiller
A chiller that uses the vapor compression cycle to chill water. It throws off the heat collected from the chilled water plus the heat from the compressor to a water loop
Change Filter Alarm
An alarm that indicates that a filter must be changed
Chilled Water Booster Pump
Used to increase the pressure and flow of chilled water in a system to ensure adequate supply where needed.
Chilled Water Circulator Pump
Used to move chilled water in a closed circuit, ensuring continuous flow.
Chilled Water Coil
A cooling element made of pipe or tube that removes heat from equipment, machines or airflows that is filled with chilled water.
Chilled Water Differential Pressure Deadband Setpoint
Sets the size of a deadband of differential pressure of chilled water
Chilled Water Differential Pressure Integral Time Parameter
Chilled Water Differential Pressure Load Shed Reset Status
Chilled Water Differential Pressure Load Shed Setpoint
Chilled Water Differential Pressure Proportional Band Parameter
Chilled Water Differential Pressure Sensor
Measures the difference in water pressure on either side of a chilled water valve
Chilled Water Differential Pressure Step Parameter
Chilled Water Differential Temperature Sensor
Measures the difference in temperature between the entering water to the chiller or other water cooling device and leaving water from the same chiller or other water cooling device
Chilled Water Discharge Flow Sensor
Swapped supply/return for entering/leaving with water-related points
Chilled Water Discharge Flow Setpoint
Chilled Water Discharge Temperature Sensor
Chilled Water Gauge Pressure Sensor
Sensor measuring the gauge pressure (zero-referenced against ambient air pressure) of chilled water
Chilled Water Loop
A collection of equipment that transport and regulate chilled water among each other
Chilled Water Return Flow Sensor
Chilled Water Return Temperature Sensor
Chilled Water Static Pressure Setpoint
Sets static pressure of chilled water
Chilled Water Storage Tank
A tank specifically designed to store chilled water in HVAC systems.
Chilled Water Supply Flow Sensor
Chilled Water Supply Flow Setpoint
Chilled Water Supply Temperature Sensor
Chilled Water System
The equipment, devices and conduits that handle the production and distribution of chilled water in a building
Chilled Water System Enable Command
Enables operation of the chilled water system
Chilled Water Thermal Energy Storage Tank
A Thermal Energy Storage (TES) tank is a specialized container for storing thermal energy, enabling more efficient cooling by balancing supply and demand. It helps reduce operational costs and minimizes the need for larger equipment.
Chilled Water Thermal Expansion Tank
A thermal expansion tank designed specifically for chilled water systems.
Chilled Water Valve
A valve that modulates the flow of chilled water
Close Limit
A parameter that places a lower or upper bound on the range of permitted values of a Close_Setpoint.
Cloudage
The fraction of the sky obscured by clouds when observed from a particular location
Cold Box
in a gas separation unit, the insulated section that contains the low-temperature heat exchangers and distillation columns.
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Laboratory
Cold Water Storage Tank
A tank used to store cold water, usually in a building's water supply system.
Coldest Zone Air Temperature Sensor
The zone temperature that is coldest; drives the supply temperature of hot air. A computed value rather than a physical sensor. Also referred to as a 'Lowest Zone Air Temperature Sensor'
Collection Basin Water Heater
Basin heaters prevent cold water basin freeze-up, e.g. in cooling towers, closed circuit fluid coolers, or evaporative condensers
Collection Basin Water Level Alarm
An alarm that indicates a high or low level of water in the collection basin, e.g. within a Cooling_Tower
Collection Basin Water Level Sensor
Measures the level of the water in the collection basin, e.g. within a Cooling_Tower
Collection Basin Water Temperature Sensor
Measures the temperature of the water in the collection basin, e.g. within a Cooling_Tower
Communication Loss Alarm
An alarm that indicates a loss of communication e.g. with a device or controller
Compressor
(1) device for mechanically increasing the pressure of a gas. (2) often described as being either open, hermetic, or semihermetic to describe how the compressor and motor drive is situated in relation to the gas or vapor being compressed. Types include centrifugal, axial flow, reciprocating, rotary screw, rotary vane, scroll, or diaphragm. 1. device for mechanically increasing the pressure of a gas. 2. specific machine, with or without accessories, for compressing refrigerant vapor.
Concession
A space to sell food and beverages. Usually embedded in a larger space and does not include a space where people consume their purchases
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:FoodHandlingRoom
Condensate Leak Alarm
An alarm that indicates a leak of condensate from a cooling system
'Condenser' and 'Condensing Unit' are interchangable terms. Renaming class to 'Condensing_Unit' to further aligns with ASHRAE's terminology.
Condenser Heat Exchanger
A heat exchanger in which the primary heat transfer vapor changes its state to a liquid phase.
Condenser Water Booster Pump
Used to increase the pressure and flow of condenser water in a system to ensure adequate supply where needed.
Condenser Water Bypass Valve
A valve installed in a bypass line of a condenser water loop
Condenser Water Circulator Pump
Condenser Water Flow Setpoint
Condenser Water Isolation Valve
An isolation valve installed in the condenser water loop
Condenser Water Loop
A collection of equipment that transport and regulate condenser water among each other
Condenser Water System
A heat rejection system consisting of (typically) cooling towers, condenser water pumps, chillers and the piping connecting the components
Condenser Water Valve
A valve that modulates the flow of condenser water
Condensing Natural Gas Boiler
A closed, pressure vessel that uses natural gas and heat exchanger that capture and reuse any latent heat for heating water or other fluids to supply steam or hot water for heating, humidification, or other applications.
Conference Room
A space dedicated in which to hold a meetings
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:ConferenceRoom
Contact Sensor
Senses or detects contact, such as for determining if a door is closed.
Control Room
A space from which operations are managed
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:SecurityRoom
Cooling Command
Controls the amount of cooling to be delivered (typically as a proportion of total cooling output)
Cooling Demand Setpoint
Sets the rate required for cooling
Cooling Enable Command
Command that enables cooling functionality in equipment but certain condition(s) must be met first before actively cooling. For the actively cooling control, see Cooling_Command.
Cooling Only Air Source Condensing Unit
Cooling Only Ground Source Condensing Unit
Cooling Only Water Source Condensing Unit
Cooling Start Stop Status
Cooling Tower
A cooling tower is a heat rejection device that rejects waste heat to the atmosphere through the cooling of a water stream to a lower temperature. Cooling towers may either use the evaporation of water to remove process heat and cool the working fluid to near the wet-bulb air temperature or, in the case of closed circuit dry cooling towers, rely solely on air to cool the working fluid to near the dry-bulb air temperature.
Cooling Tower Fan
A fan that pulls air through a cooling tower and across the louvers where the water falls to aid in heat exchange by the process of evaporation
Cooling Valve
A valve that controls air temperature by modulating the amount of cold water flowing through a cooling coil
Copy Room
A room set aside for common office equipment, including printers and copiers
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:CopyingRoom
Core Temperature Sensor
Measures the internal temperature of the radiant layer at the heat source or sink level of the radiant heating and cooling HVAC system.
Core Temperature Setpoint
Sets temperature for the core, i.e. the temperature at the heat source or sink level, of the radiant panel.
Cubicle
A smaller space set aside for an individual, but not with a door and without full-height walls
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Workspace perhaps with a rec:Desk
Current Angle
Angle of current phasor
Current Imbalance Sensor
A sensor which measures the current difference (imbalance) between phases of an electrical system
Current Limit
A parameter that places a lower or upper bound on the range of permitted values of a Current_Setpoint.
Current Ratio Setpoint
Sets the ratio of currents in a transformer
Current Total Harmonic Distortion
Measurement of harmonic distortion present in a signal defined as the sum of the powers of all harmonic components to the power of the fundamental frequency. (https://en.wikipedia.org/wiki/Total_harmonic_distortion)
Curtailment Override Command
DC Bus Voltage Sensor
Measures the voltage across a DC bus
Damper Position Command
Controls the position (the degree of openness) of a damper
Damper Position Sensor
Measures the current position of a damper in terms of the percent of fully open
Damper Position Setpoint
Sets the position of damper
Damper Position Status
Brick-defined quantity 'Deceleration_Time' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/Time' directly.
Deceleration Time Setpoint
Dehumidification Start Stop Status
Dehumidify Command
Triggers the dehumidification process, actively removing moisture from the air to achieve desired humidity levels
Deionised Water Conductivity Sensor
Measures the electrical conductance of deionised water
Deionised Water Level Sensor
Measures the height/level of deionised water in some container
Deionized Water Alarm
An alarm that indicates deionized water leaks.
Derivative Gain Parameter
Derivative Time Parameter
Detention Room
A space for the temporary involuntary confinement of people
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Detention_Room
Dewpoint Setpoint
Sets dew point
Differential Air Temperature Setpoint
Sets temperature of diffrential air
Differential Discharge Return Water Temperature Sensor
Differential Pressure Bypass Valve
A 2-way, self contained proportional valve with an integral differential pressure adjustment setting.
Differential Speed Sensor
Differential Speed Setpoint
Sets differential speed
Differential Supply Return Water Temperature Sensor
Dimmer
A switch providing continuous control over all or part of a lighting installation; typically potentiometer-based
Direct Expansion Cooling Coil
Direct Expansion Heating Coil
Direction Command
Commands that affect the direction of some phenomenon
Disable Differential Enthalpy Command
Disables the use of differential enthalpy control
Disable Differential Temperature Command
Disables the use of differential temperature control
Disable Fixed Enthalpy Command
Disables the use of fixed enthalpy control
Disable Fixed Temperature Command
Disables the use of fixed temperature temperature
Disable Hot Water System Outside Air Temperature Setpoint
Disables hot water system when outside air temperature reaches the indicated value
Disable Status
Indicates if functionality has been disabled
Discharge Chilled Water Temperature Setpoint
Discharge Condenser Water Flow Sensor
Discharge Condenser Water Temperature Sensor
Discharge Condenser Water Temperature Setpoint
Displacement Flow Air Diffuser
An air diffuser that is designed for low discharge air speeds to minimize turbulence and induction of room air. This diffuser is used with displacement ventilation systems.
Domestic Hot Water Circulator Pump
Used to move domestic hot water in a closed circuit, ensuring continuous flow.
Domestic Hot Water Differential Pressure Sensor
Measures the pressure difference in domestic hot water systems.
Domestic Hot Water Differential Pressure Setpoint
Sets the target water differential pressure between an upstream and downstream point in a water pipe used to carry domestic hot water
Domestic Hot Water Discharge Temperature Sensor
Domestic Hot Water Discharge Temperature Setpoint
Domestic Hot Water Supply Temperature Sensor
Domestic Hot Water Supply Temperature Setpoint
Domestic Hot Water System
The equipment, devices and conduits that handle the production and distribution of domestic hot water in a building
Domestic Hot Water System Enable Command
Enables operation of the domestic hot water system
Domestic Hot Water Valve
A valve regulating the flow of domestic hot water
Domestic Water Loop
Drench Hose
Drive Ready Status
Indicates if a hard drive or other storage device is ready to be used, e.g. in the context of RAID
Dry Cooler
A dry cooler is a fluid cooler that uses air, a relatively dry, non-liquid fluid to accomplish process cooling. (https://submer.com/submer-academy/library/dry-cooler/)
Duct Air Static Pressure Setpoint
Brick-defined quantity 'Dynamic_Pressure' (also referred to as Velocity_Pressure) is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/DynamicPressure' directly.
EconCycle Start Stop Status
Economizer
Device that, on proper variable sensing, initiates control signals or actions to conserve energy. A control system that reduces the mechanical heating and cooling requirement.
Economizer Damper
A damper that is part of an economizer that is used to module the flow of air
Effective Air Temperature Cooling Setpoint
The class 'Effective_Air_Temperature_Cooling_Setpoint' is deprecated in favor of further specifying that it is a zone air setpoint.
Effective Air Temperature Heating Setpoint
The class 'Effective_Air_Temperature_Heating_Setpoint' is deprecated in favor of further specifying that it is a zone air setpoint.
Effective Return Air Temperature Setpoint
Effective Room Air Temperature Setpoint
Effective Zone Air Temperature Setpoint
The class 'Effective_Zone_Air_Temperature_Setpoint' is deprecated and replaced to better represent its function as a target setpoint
Electric Baseboard Radiator
Electric heating device located at or near the floor
Electric Boiler
A closed, pressure vessel that uses electricity for heating water or other fluids to supply steam or hot water for heating, humidification, or other applications.
Brick-defined quantity 'Electric_Current' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/ElectricCurrent' directly.
Electrical Energy Usage Sensor
A sensor that records the quantity of electrical energy consumed in a given period
Electronic Expansion Valve
A digitally controlled valve in HVAC systems that precisely regulates refrigerant flow.
Electronic Mixing Valve
Electronically controlled valve for precise mixing of hot and cold fluid.
Elevator
A device that provides vertical transportation between floors, levels or decks of a building, vessel or other structure
Emergency Air Flow System
Emergency Air Flow System Status
Emergency Generator Alarm
An alarm that indicates off-normal conditions associated with an emergency generator
Emergency Generator Status
Indicates if an emergency generator is active
Emergency Phone
Emergency Power Off System
A system that can power down a single piece of equipment or a single system from a single point
Emergency Power Off System Activated By High Temperature Status
Emergency Power Off System Activated By Leak Detection System Status
Emergency Push Button Status
Indicates if an emergency button has been pushed
Employee Entrance Lobby
An open space near an entrance that is typicaly only used for employees
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:ServiceEntrance
Enable Differential Enthalpy Command
Enables the use of differential enthalpy control
Enable Differential Temperature Command
Enables the use of differential temperature control
Enable Fixed Enthalpy Command
Enables the use of fixed enthalpy control
Enable Fixed Temperature Command
Enables the use of fixed temperature control
Enable Hot Water System Outside Air Temperature Setpoint
Enables hot water system when outside air temperature reaches the indicated value
Brick-defined quantity 'Energy' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/Energy' directly.
Energy Generation Sensor
A sensor measuring the amount of generated energy.
Energy Zone
A space or group of spaces that are managed or monitored as one unit for energy purposes
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Zone
Entering Chilled Water Flow Setpoint
Sets the target flow rate of chilled entering water
Entering Domestic Hot Water Temperature Sensor
Entering Domestic Hot Water Temperature Setpoint
Entering Hot Water Flow Setpoint
Sets the target flow rate of hot entering water
Entering Medium Temperature Hot Water Temperature High Reset Setpoint
Entering Medium Temperature Hot Water Temperature Load Shed Setpoint
Entering Medium Temperature Hot Water Temperature Load Shed Status
Entering Medium Temperature Hot Water Temperature Low Reset Setpoint
Entering Water Differential Pressure Deadband Setpoint
Sets the size of a deadband of differential pressure of entering water
Entering Water Differential Pressure Integral Time Parameter
Entering Water Differential Pressure Proportional Band Parameter
Entering Water Pressure Sensor
Measures the water pressure at the entry point of a system.
Entering Water Temperature Alarm
An alarm that indicates the off-normal conditions associated with temperature of the entering water.
Entering Water Temperature Deadband Setpoint
Sets the size of a deadband of temperature of entering water
Entering Water Temperature Integral Time Parameter
Entering Water Temperature Proportional Band Parameter
Enthalpy Setpoint
Sets enthalpy
Entrance
The location and space of a building where people enter and exit the building
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Entrance
Environment Box
(also known as climatic chamber), enclosed space designed to create a particular environment.
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Environment_Box
Equipment Room
A telecommunications room where equipment that serves the building is stored
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:UtilitiesRoom
Evaporative Heat Exchanger
Even Month Status
Exercise Room
An indoor room used for exercise and physical activities
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:ExerciseRoom
Exhaust Air Dewpoint Sensor
Measures dewpoint of exhaust air
Exhaust Air Differential Pressure Sensor
Measures the difference in pressure between an upstream and downstream of an air duct or other air conduit used to exhaust air from the building
Exhaust Air Differential Pressure Setpoint
Sets the target air differential pressure between an upstream and downstream point in a exhaust air duct or conduit
Exhaust Air Humidity Sensor
Measures the relative humidity of exhaust air
Exhaust Air Humidity Setpoint
Humidity setpoint for exhaust air
Exhaust Air Stack Flow Deadband Setpoint
Sets the size of a deadband of exhaust air stack flow
Exhaust Air Stack Flow Integral Time Parameter
Exhaust Air Stack Flow Proportional Band Parameter
Exhaust Air Stack Flow Sensor
Measures the rate of flow of air in the exhaust air stack
Exhaust Air Static Pressure Proportional Band Parameter
Exhaust Air Static Pressure Setpoint
Sets static pressure of exhaust air
Exhaust Air Temperature Sensor
Measures the temperature of exhaust air
Exhaust Air Velocity Pressure Sensor
Exhaust Damper
A damper that modulates the flow of exhaust air
Exhaust Fan Disable Command
Exhaust_Fan_Disable_Command is deprecated as a point name should not include more specific equipment names than top level equipment names
Exhaust_Fan_Enable_Command is deprecated as a point name should not include more specific equipment names than top level equipment names
Eye Wash Station
Fan On Off Status
Fan Speed Command
Controls the speed of fans
Fan VFD
Variable-frequency drive for fans
Fault Reset Command
Clears a fault status
Field Of Play
The area of a stadium where athletic events occur, e.g. the soccer pitch
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Field_Of_Play
Filter Air Differential Pressure Sensor
Measures the difference in air pressure before and after an air filter.
Filter Reset Command
Filter Water Differential Pressure Sensor
Measures the difference in water pressure before and after a water filter.
Final Filter
The last, high-efficiency filter installed in a sequence to remove the finest particulates from the substance being filtered
Fire Alarm
Fire Alarm Control Panel
Fire alarm panel is the controlling component of a fire alarm system.
Fire Alarm Manual Call Point
Manual alarm call points are designed for the purpose of raising an alarm manually once verification of a fire or emergency condition exists. by operating the push button or break glass the alarm signal can be raised.
Fire Alarm Pull Station
An active fire protection device (usually wall-mounted) that when activated initiates an alarm on a fire alarm system. In its simplest form the user activates the alarm by pulling the handle down.
Fire Control Panel
A panel-mounted device that provides status and control of a fire safety system
Fire Safety System
A system containing devices and equipment that monitor, detect and suppress fire hazards
Fire Sensor
Measures the presence of fire
Fire Sprinkler Thermal Expansion Tank
A specialized thermal expansion tank that is part of a building's fire suppression system.
Fire Sprinkler Water Storage Tank
A specialized tank intended to store water that can be quickly accessed for fire suppression.
Fire Zone
A logical subdivision of a building that is monitored for fire; may also have a classification for the type of fire hazard that can occur
First Aid Kit
First Aid Room
A room for a person with minor injuries can be treated or temporarily treated until transferred to a more advanced medical facility
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for First_Aid_Room
Floor Fan Coil Unit
A fan coil unit installed on the floor, typically against a wall, for providing heating and cooling in residential or small office spaces
Formaldehyde Level Sensor
Measures the concentration of formaldehyde in air
Freeze Status
Indicates if a substance contained within a vessel has frozen
Freezer
cold chamber usually kept at a temperature of 22°F to 31°F (–5°C to –1°C), with high-volume air circulation.
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Freezer
Brick-defined quantity 'Frequency' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/Frequency' directly.
Frequency Setpoint
Sets frequency
Fresh Air Fan
Fresh Air Fan is deprecated in favor of Outside Fan because the latter is a more accurate representation
Frost Sensor
Senses the presence of frost or conditions that may cause frost
Fume Hood
A fume hood is a type of local exhaust ventilation device designed to protect users from exposure to hazardous fumes, vapors, and dust. It is typically mounted over a workspace, table, or shelf to capture and conduct unwanted gases away from the enclosed area.
Fume Hood Air Flow Sensor
Measures the rate of flow of air in a fume hood
Gas Distribution
Utilize a gas distribution source to represent how gas is distributed across multiple destinations
Gas Pressure Regulator Valve
Valve designed to maintain controlled downstream gas pressure with varying upstream pressure.
Gas Sensor
Measures gas concentration (other than CO2)
Gas System
Gatehouse
The standalone building used to manage the entrance to a campus or building grounds
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Gatehouse
Brick-defined quantity 'Gauge_Pressure' is deprecated. Use the QUDT quantity 'qudt:QuantityKind/Pressure' and indicate contextually that it is gauge pressure if necessary.
Generator Room
A room for electrical equipment, specifically electrical generators.
Grease Interceptor
A larger, more industrial version of a grease trap designed to handle higher volumes of wastewater and more efficiently separate grease and fats.
HVAC Zone
a space or group of spaces, within a building with heating, cooling, and ventilating requirements, that are sufficiently similar so that desired conditions (e.g., temperature) can be maintained throughout using a single sensor (e.g., thermostat or temperature sensor).
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:HVACZone
Hail Sensor
Measures hail in terms of its size and damage potential
Hallway
A common space, used to connect other parts of a building
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Hallway
Hazardous Materials Storage
A storage space set aside (usually with restricted access) for the storage of materials that can be hazardous to living beings or the environment
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Hazardous_Materials_Storage
Heat Detector
Heat Exchanger Discharge Water Temperature Sensor
Heat Exchanger Supply Water Temperature Sensor
Heat Exchanger System Enable Status
Indicates if the heat exchanger system has been enabled
Heat Pump Air Source Condensing Unit
Heat Pump Ground Source Condensing Unit
Heat Pump Water Source Condensing Unit
Heat Recovery Air Source Condensing Unit
Heat Recovery Hot Water System
Heat Recovery Water Source Condensing Unit
Heat Sensor
This class has a poor definition is supplanted by Temperature_Sensor
Heat Sink Temperature Sensor
Measure temperature of the heat sink on a device such as a VFD.
Heat Wheel
A rotary heat exchanger positioned within the supply and exhaust air streams of an air handling system in order to recover heat energy
Heat Wheel VFD
A VFD that drives a heat wheel
Heating Command
Controls the amount of heating to be delivered (typically as a proportion of total heating output)
Heating Demand Setpoint
Sets the rate required for heating
Heating Enable Command
Command that enables heating functionality in equipment but certain condition(s) must be met first before actively heating. For the actively heating control, see Heating_Command.
Heating Start Stop Status
Heating Thermal Power Sensor
High Air Flow Alarm
An alarm that indicates that the air flow is higher than normal.
High CO2 Alarm
A device that indicates high concentration of carbon dioxide.
High Head Pressure Alarm
An alarm that indicates a high pressure generated on the output side of a gas compressor in a refrigeration or air conditioning system.
High Humidity Alarm
An alarm that indicates high concentration of water vapor in the air.
High Humidity Alarm Parameter
A parameter determining the humidity level at which to trigger a high humidity alarm
High Outside Air Lockout Temperature Differential Parameter
The upper bound of the outside air temperature lockout range
High Return Air Temperature Alarm
An alarm that indicates that return air temperature is too high
High Static Pressure Cutout Setpoint Limit
A parameter that places a lower or upper bound on the range of permitted values of a High_Static_Pressure_Cutout_Setpoint.
High Temperature Alarm Parameter
A parameter determining the temperature level at which to trigger a high temperature alarm
High Temperature Hot Water Discharge Temperature Sensor
High Temperature Hot Water Return Temperature Sensor
High Temperature Hot Water Supply Temperature Sensor
Hold Status
Hospitality Box
A room at a stadium, usually overlooking the field of play, that is physical separate from the other seating at the venue
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Hospitality_Box
Hot Box
hot air chamber forming part of an air handler.
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Hot_Box
Hot Water Baseboard Radiator
Hydronic heating device located at or near the floor
Hot Water Booster Pump
Used to increase the pressure and flow of hot water in a system to ensure adequate supply where needed.
Hot Water Coil
A heating element typically made of pipe, tube or wire that emits heat that is filled with hot water.
Hot Water Differential Pressure Deadband Setpoint
Sets the size of a deadband of differential pressure of hot water
Hot Water Differential Pressure Integral Time Parameter
Hot Water Differential Pressure Load Shed Reset Status
Hot Water Differential Pressure Proportional Band Parameter
Hot Water Differential Temperature Sensor
Measures the difference in temperature between the entering water to the boiler or other water heating device and leaving water from the same boiler or other water heating device
Hot Water Discharge Flow Sensor
Hot Water Discharge Flow Setpoint
Hot Water Gauge Pressure Sensor
Sensor measuring the gauge pressure (zero-referenced against ambient air pressure) of hot water
Hot Water Loop
A collection of equipment that transport and regulate hot water among each other
Hot Water Return Flow Sensor
Hot Water Static Pressure Setpoint
Sets static pressure of hot air
Hot Water Storage Tank
A tank designed to store hot water in an HVAC system.
Hot Water Supply Flow Sensor
Hot Water Supply Flow Setpoint
Hot Water Thermal Energy Storage Tank
A Thermal Energy Storage (TES) tank is a specialized container for storing thermal energy, enabling more efficient heating by balancing supply and demand. It helps reduce operational costs and minimizes the need for larger equipment.
Hot Water Thermal Expansion Tank
A thermal expansion tank used in hot water heating systems.
Hot Water Usage Sensor
Measures the amount of hot water that is consumed, over some period of time
Humidification Start Stop Status
Humidifier
A device that adds moisture to air or other gases
Humidifier Fault Status
Indicates the presence of a fault in a humidifier
Humidify Command
Humidity Deadband Setpoint
Sets the size of a deadband of humidity
Humidity Tolerance Parameter
A parameter determining the difference between upper and lower limits of humidity.
IDF
An room for an intermediate distribution frame, where cables carrying signals from the main distrubtion frame terminate and then feed out to endpoints
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:CableRoom
Ice Tank Leaving Water Temperature Sensor
Measures the temperature of water leaving an ice tank
Illuminance Setpoint
Target Illuminance of the zone.
Induction Unit
A device with an primary air connection and integrated coil and condensate pan that performs sensible and latent cooling of a space. Essentially an Active Chilled Beam with a built in condensate pan.
Information Area
An information booth or kiosk where visitors would look for information
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Information_Area
Inside Face Surface Temperature Sensor
Measures the inside surface (relative to the space) of the radiant panel of the radiant heating and cooling HVAC system.
Inside Face Surface Temperature Setpoint
Sets temperature for the inside face surface temperature of the radiant panel.
Intake Air Filter
Filters air intake
Intake Air Temperature Sensor
Measures air at the interface between the building and the outside
Intrusion Detection Equipment
Brick-defined quantity 'Irradiance' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/Irradiance' directly. For specific solar irradiance, use brick:Solar_Irradiance.
Isolation Damper
A damper that isolates a section of ductwork or other air handling system.
Janitor Room
A room set aside for the storage of cleaning equipment and supplies
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:BackOffice
Jet Nozzle Air Diffuser
An air diffuser that is designed to produce high velocity discharge air stream to throw the air over a large distance or target the air stream to a localize area
Laminar Flow Air Diffuser
An air diffuser that is designed for low discharge air speeds to provide uniform and unidirectional air pattern which minimizes room air entrainment
Last Fault Code Status
Indicates the last fault code that occurred
Lead Lag Command
Enables lead/lag operation
Lead Lag Status
Indicates if lead/lag operation is enabled
Lead On Off Command
Controls the active/inactive status of the "lead" part of a lead/lag system
Leaving Medium Temperature Hot Water Temperature High Reset Setpoint
Leaving Medium Temperature Hot Water Temperature Load Shed Setpoint
Leaving Medium Temperature Hot Water Temperature Load Shed Status
Leaving Medium Temperature Hot Water Temperature Low Reset Setpoint
Leaving Water Differential Pressure Deadband Setpoint
Sets the size of a deadband of differential pressure of leaving water
Leaving Water Differential Pressure Integral Time Parameter
Leaving Water Differential Pressure Proportional Band Parameter
Leaving Water Pressure Sensor
Measures the water pressure at the exit point of a system.
Leaving Water Temperature Alarm
An alarm that indicates the off-normal conditions associated with temperature of the leaving water.
Leaving Water Temperature Deadband Setpoint
Sets the size of a deadband of temperature of leaving water
Leaving Water Temperature Integral Time Parameter
Leaving Water Temperature Proportional Band Parameter
Level Command
Adjusts the operational state to a specific level within a predefined range.
Level Status
The current operational state of a specific level within a predefined range.
Library
A place for the storage and/or consumption of physical media, e.g. books, periodicals, and DVDs/CDs
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Library
Light Command
Replaced with Lighting_Command to represent its function more precisely.
Lighting Correlated Color Temperature Command
A command to set correlated color temperature (CCT) which is the temperature of the Planckian radiator whose perceived color most closely resembles that of a given stimulus at the same brightness and under specified viewing conditions.
Lighting Correlated Color Temperature Sensor
A sensor to measure correlated color temperature (CCT) which is the temperature of the Planckian radiator whose perceived color most closely resembles that of a given stimulus at the same brightness and under specified viewing conditions.
Lighting System
The equipment, devices and interfaces that serve or are a part of the lighting subsystem in a building
Lighting Zone
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Lighting_Zone
Liquid Detection Alarm
Load Current Sensor
Measures the current consumed by a load
Loading Dock
A part of a facility where delivery trucks can load and unload. Usually partially enclosed with specific traffic lanes leading to the dock
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Loading_Dock
Locally On Off Status
Lockout Status
Indicates if a piece of equipment, system, or functionality has been locked out from operation
Low Battery Alarm
An alarm that indicates the battery is low.
Low Freeze Protect Temperature Parameter
Low Humidity Alarm
An alarm that indicates low concentration of water vapor in the air.
Low Humidity Alarm Parameter
A parameter determining the humidity level at which to trigger a low humidity alarm
Low Outside Air Lockout Temperature Differential Parameter
The lower bound of the outside air temperature lockout range
Low Outside Air Temperature Enable Differential Sensor
Low Outside Air Temperature Enable Setpoint
Low Return Air Temperature Alarm
An alarm that indicates that return air temperature is too low
Low Suction Pressure Alarm
An alarm that indicates a low suction pressure in the compressor in a refrigeration or air conditioning system.
Low Temperature Alarm Parameter
A parameter determining the temperature level at which to trigger a low temperature alarm
Low Voltage Alarm
An alarm that indicates the voltage is lower than its normal state.
Lowest Exhaust Air Static Pressure Sensor
The lowest observed static pressure of air in exhaust regions of an HVAC system over some period of time
Luminaire
A complete lighting unit consisting of a lamp or lamps and ballast(s) (when applicable) together with the parts designed to distribute the light, to position and protect the lamps, and to connect the lamps to the power supply.
Luminaire Driver
A power source for a luminaire
Luminance Alarm
Luminance Command
Controls the amount of luminance delivered by a lighting system
Luminance Sensor
Measures the luminous intensity per unit area of light travelling in a given direction
Luminance Setpoint
Sets luminance
MDF
A room for the Main Distribution Frame, the central place of a building where cables carrying signals meet and connect to the outside world
Mail Room
A room where mail is recieved and sorted for distribution to the rest of the building
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:MailRoom
Main Circuit Breaker
All breaker panels generally have a main circuit breaker before the bus / MCBs. In some older panels there may be a Main Disconnect Switch instead. It is also possible to have a main disconnect switch, and a main circuit breaker in a panel.
Main Disconnect Switch
Building power is most commonly provided by utility company through a master disconnect switch (sometimes called a service disconnect) in the main electrical room of a building. The Utility Company provided master disconnect switch often owns or restricts access to this switch. There can also be other cases where a disconnect is placed into an electrical system to allow service cut-off to a portion of the building.
Maintenance Mode Command
Controls whether or not a device or controller is operating in "Maintenance" mode
Maintenance Required Alarm
An alarm that indicates that repair/maintenance is required on an associated device or equipment
Majlis
In Arab countries, an Majlis is a private lounge where visitors are recieved and entertained
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Majlis
Makeup Water Valve
A valve regulating the flow of makeup water into a water holding tank, e.g. a cooling tower, hot water tank
Manual Auto Status
Indicates if a system is under manual or automatic operation
Massage Room
Usually adjunct to an athletic facility, a private/semi-private space where massages are performed
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:TherapyRoom
Max Air Temperature Setpoint
Setpoint for maximum air temperature
Max Chilled Water Differential Pressure Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Chilled_Water_Differential_Pressure_Setpoint.
Max Frequency Command
Sets the maximum permitted frequency
Max Fresh Air Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Fresh_Air_Setpoint.
Max Hot Water Differential Pressure Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Hot_Water_Differential_Pressure_Setpoint.
Max Load Setpoint
Max Outside Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Outside_Air_Flow_Setpoint.
Max Position Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Position_Setpoint.
Max Speed Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Speed_Setpoint.
Max Water Level Alarm
Alarm indicating that the maximum water level was reached
Max Water Temperature Setpoint
Setpoint for max water temperature
Media Hot Desk
A non-enclosed space used by members of the media temporarily to cover an event while they are present at a venue
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Media_Hot_Desk
Media Production Room
A enclosed space used by media professionals for the production of media
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Media_Production_Room
Medium Temperature Hot Water Differential Pressure Load Shed Reset Status
Medium Temperature Hot Water Differential Pressure Load Shed Setpoint
Medium Temperature Hot Water Differential Pressure Sensor
Measures the difference in water pressure between sections of a medium temperature hot water system
Medium Temperature Hot Water Differential Pressure Setpoint
Medium Temperature Hot Water Discharge Temperature Sensor
Medium Temperature Hot Water Return Temperature Sensor
Medium Temperature Hot Water Supply Temperature Sensor
Methane Level Sensor
Measures the concentration of methane in air
Min Air Temperature Setpoint
Setpoint for minimum air temperature
Min Chilled Water Differential Pressure Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Chilled_Water_Differential_Pressure_Setpoint.
Min Frequency Command
Min Fresh Air Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Fresh_Air_Setpoint.
Min Hot Water Differential Pressure Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Hot_Water_Differential_Pressure_Setpoint.
Min Load Setpoint
Min Outside Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Outside_Air_Flow_Setpoint.
Min Position Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Position_Setpoint.
Min Speed Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Speed_Setpoint.
Min Water Level Alarm
Alarm indicating that the minimum water level was reached
Min Water Temperature Setpoint
Setpoint for min water temperature
Mixed Air Filter
A filter that is applied to the mixture of recirculated and outside air
Mixed Air Flow Sensor
Measures the rate of flow of mixed air
Mixed Air Humidity Sensor
Measures the humidity of mixed air
Mixed Air Humidity Setpoint
Humidity setpoint for mixed air
Mixed Air Temperature Sensor
Measures the temperature of mixed air
Mixed Air Temperature Setpoint
Sets temperature of mixed air
Mixed Damper
A damper that modulates the flow of the mixed outside and return air streams
Motor Control Center
The Motor Control Center is a specialized type of switchgear which provides electrical power to major mechanical systems in the building such as HVAC components.
Motor Current Sensor
Measures the current consumed by a motor
Motor Direction Status
Indicates which direction a motor is operating in, e.g. forward or reverse
Motor On Off Status
Motor Speed Sensor
Motor Torque Sensor
Measures the torque, or rotating power, of a motor
NO2 Level Sensor
Measures the concentration of NO2 in air
Natural Gas Flow Sensor
Measures the rate of flow of natural gas
Natural Gas Seismic Shutoff Valve
Valves that automatically shut off your natural gas service when an earthquake of a sufficient magnitude occurs at the location.
Natural Gas Temperature Sensor
Measures the temperature of natural gas
Natural Gas Usage Sensor
Measures the amount of natural gas that is consumed or used, over some period of time
No Water Alarm
Alarm indicating that there is no water in the equipment or system
Noncondensing Natural Gas Boiler
A closed, pressure vessel that uses natural gas with no system to capture latent heat for heating water or other fluids to supply steam or hot water for heating, humidification, or other applications.
Occupancy Command
Controls whether or not a device or controller is operating in "Occupied" mode
Occupancy Count Sensor
Sensors measuring the number of people in an area
Occupancy Sensor
Detects occupancy of some space or area
Occupied Air Temperature Cooling Setpoint
'Occupied_Air_Temperature_Cooling_Setpoint' is deprecated in favor of further specifying that it is a zone air setpoint.
Occupied Air Temperature Heating Setpoint
'Occupied_Air_Temperature_Heating_Setpoint' is deprecated in favor of further specifying that it is a zone air setpoint.
Occupied Cooling Mode Status
Occupied Cooling Temperature Deadband Setpoint
Sets the size of a deadband of temperature for cooling when occupied
Occupied Cooling Temperature Setpoint
Sets temperature for cooling when occupied
Occupied Heating Mode Status
Occupied Heating Temperature Deadband Setpoint
Sets the size of a deadband of temperature for heating when occupied
Occupied Heating Temperature Setpoint
Sets temperature for heating when occupied
Occupied Humidity Setpoint
Target humidity level when the location is occupied.
Occupied Return Air Temperature Setpoint
Occupied Room Air Temperature Setpoint
Occupied Zone Air Temperaure Setpoint
'Occupied_Zone_Air_Temperature_Setpoint' is deprecated in favor of further specifying that it is a target setpoint
Off Command
An Off Command controls or reports the binary 'off' status of a control loop, relay or equipment activity. It can only be used to stop/deactivate an associated equipment or process, or determine that the related entity is 'off'
Office Kitchen
A common space, usually near or in a breakroom, where minor food preperation occurs
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Kitchenette
On Command
An On Command controls or reports the binary 'on' status of a control loop, relay or equipment activity. It can only be used to start/activate an associated equipment or process, or determine that the related entity is 'on'
Open Close Command
A binary signal given to a device, such as a damper or valve, to either open or close
Open Close Status
Indicates the open/close status of a device such as a damper or valve
Open Heating Valve Outside Air Temperature Setpoint
Open Office
An open space used for work or study by mulitple people. Usuaully subdivided into cubicles or desks
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:OfficeLandscape
Operative Temperature
The uniform temperature of an imaginary black enclosure in which an occupant would exchange the same amount of heat by radiation plus convection as in the actual nonuniform environment (https://en.wikipedia.org/wiki/Operative_temperature)
Output Frequency Sensor
Output Voltage Sensor
Measures the voltage output by some process or device
Outside
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Outside
Outside Air CO2 Sensor
Measures the concentration of CO2 in outside air
Outside Air CO Sensor
Measures the concentration of CO in outside air
Outside Air Dewpoint Sensor
Senses the dewpoint temperature of outside air
Outside Air Enthalpy Sensor
Measures the total heat content of outside air
Outside Air Flow Sensor
Measures the rate of flow of outside air into the system
Outside Air Flow Setpoint
Sets outside air flow rate
Outside Air Grains Sensor
Measures the mass of water vapor in outside air
Outside Air Humidity Sensor
Measures the relative humidity of outside air
Outside Air Humidity Setpoint
Humidity setpoint for outside air
Outside Air Lockout Temperature Setpoint
Outside Air Temperature High Reset Setpoint
Outside Air Temperature Low Reset Setpoint
Outside Air Wet Bulb Temperature Sensor
A sensor measuring the wet-bulb temperature of outside air
Outside Damper
A damper that modulates the flow of outside air
Outside Face Surface Temperature Sensor
Measures the outside surface (relative to the space) of the radiant panel of a radiant heating and cooling HVAC system.
Outside Face Surface Temperature Setpoint
Sets temperature for the outside face surface temperature of the radiant panel.
Outside Illuminance Sensor
Measures the total luminous flux incident on an outside, per unit area
Overload Alarm
An alarm that can indicate when a full-load current is exceeded.
Overridden Off Status
Indicates if a control loop, relay or equipment has been turned off when it would otherwise be scheduled to be on
Overridden On Status
Indicates if a control loop, relay or equipment has been turned on when it would otherwise be scheduled to be off
Ozone Level Sensor
Measures the concentration of ozone in air
PIR Sensor
Detects the presense of motion in some area using the differential change in infrared intensity between two or more receptors
PM10 Level Sensor
Detects level of particulates of size 10 microns
PM1 Level Sensor
Detects level of particulates of size 1 microns
PM2.5 Level Sensor
Detects level of particulates of size 2.5 microns
PVT Panel
A type of solar panels that convert solar radiation into usable thermal and electrical energy
PV Generation System
A collection of photovoltaic devices that generates energy
Packaged Air Source Heat Pump
A self-contained unit that uses air as a heat source or sink for heating and cooling purposes.
Packaged Water Source Heat Pump
A self-contained unit that uses water as a heat source or sink for heating and cooling purposes.
Parking Level
A floor of a parking structure
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Parking_Level
Parking Space
An area large enough to park an individual vehicle
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:ParkingSpace
Parking Structure
A building or part of a building devoted to vehicle parking
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Parking_Structure
Passive Chilled Beam
A chilled beam that does not have an integral air supply and instead relies on natural convection to draw air through the device.
Peak Demand Sensor
The peak power consumed by a process over some period of time
Brick-defined quantity 'Phasor' is deprecated.
Phasor Magnitude
Photovoltaic Inverter
Converts direct current electricity generated by solar panels into alternating current
Piezoelectric Sensor
Senses changes pressure, acceleration, temperature, force or strain via the piezoelectric effect
PlugStrip
A device containing a block of electrical sockets allowing multiple electrical devices to be powered from a single electrical socket.
Plumbing Room
A service room devoted to the operation and routing of water in a building. Usually distinct from the HVAC subsystems.
Portfolio
A collection of sites
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Portfolio
Brick-defined quantity 'Power_Factor' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/PowerFactor' directly.
Power Factor Sensor
Sensors measuring power Factor, under periodic conditions, is the ratio of the absolute value of the active power (P) to the apparent power (S).
Power Loss Alarm
An alarm that indicates a power failure.
Prayer Room
A room set aside for prayer
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Prayer_Room
Pre Filter
A filter installed in front of a more efficient filter to extend the life of the more expensive higher efficiency filter
Pre Filter Status
Indicates if a prefilter needs to be replaced
Preheat Command
A command to activate preheating. Typically used to preheat cool air coming from a mixing box or economizer
Preheat Demand Setpoint
Sets the rate required for preheat
Preheat Hot Water System
Preheat Hot Water Valve
Brick-defined generic quantity 'Pressure' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/Pressure' directly, or more specific QUDT/Brick quantities like qudt:QuantityKind/StaticPressure, qudt:QuantityKind/AtmosphericPressure, brick:Differential_Pressure, etc.
Pressurization Fan
A pressurization fan is a device used to increase and maintain higher air pressure in a specified space compared to its surroundings.
Private Office
An office devoted to a single individual, with walls and door
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Office
Pump Command
Controls or reports the speed of a pump (typically as a proportion of its full pumping capacity)
Pump On Off Status
Pump Room
A mechanical room that houses pumps
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Pump_Room
Pump Status
Status of a pump
Pump VFD
Variable-frequency drive for pumps
Brick-defined quantity 'Radiance' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/Radiance' directly. For specific solar radiance, use brick:Solar_Radiance.
Radiant Temperature
the uniform temperature of an imaginary enclosure in which the radiant heat transfer from the human body is equal to the radiant heat transfer in the actual non-uniform enclosure. (https://en.wikipedia.org/wiki/Mean_radiant_temperature)
Radiation Hot Water System
Brick-defined quantity 'Radioactivity_Concentration' is deprecated.
Brick-defined quantity 'Radioactivity_Concentration_Sensor' is deprecated. Use Air_Quality_Sensor instead, or the provided sensor class for the specific kind or source of radioactivity (e.g. Radon gas)
Radon Concentration Sensor
Measures the concentration of radioactivity due to radon
Rain Duration Sensor
Measures the duration of precipitation within some time frame
Rain Level Sensor
Measures the amount of precipitation fallen
Rain Water Storage Tank
A tank engineered to capture and store rainwater, usually for non-potable uses.
Rated Speed Setpoint
Sets rated speed
Reactive Energy Sensor
Measures the integral of reactive power
Reactive Power Sensor
Measures the portion of power that, averaged over a complete cycle of the AC waveform, is due to stored energy which returns to the source in each cycle
Reception
A space, usually in a lobby, where visitors to a building or space can go to after arriving at a building and inform building staff that they have arrived
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Reception
Refrigerant Level Sensor
Refrigeration System
System designed to remove heat from a space or substance, typically using a refrigerant in a closed loop
Reheat Command
A command to activate reheating, which is used for either heating or for dehumidification purposes
Reheat Hot Water System
Reheat Valve
A valve that controls air temperature by modulating the amount of hot water flowing through a reheat coil
Relay
an electrically operated switch
Relay Command
Commands to switch the relay
Relief Damper
A damper that is a component of a Relief Air System, ensuring building doesn't become over-pressurised
Relief Fan
A fan that is a component of a Relief Air System, ensuring building doesn't become over-pressurised
Remotely On Off Status
Retail Room
A space set aside for retail in a larger establishment, e.g. a gift shop in a hospital
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:RetailRoom
Return Air CO2 Sensor
Measures the concentration of CO2 in return air
Return Air CO2 Setpoint
Sets some property of CO2 in Return Air
Return Air CO Sensor
Measures the concentration of CO in return air
Return Air Dewpoint Sensor
Senses the dewpoint temperature of return air
Return Air Differential Pressure Sensor
Measures the difference in pressure between the return and supply side
Return Air Differential Pressure Setpoint
Sets the target air differential pressure between an upstream and downstream point in a return air duct or conduit
Return Air Enthalpy Sensor
Measures the total heat content of return air
Return Air Filter
Filters return air
Return Air Flow Sensor
Measures the rate of flow of return air
Return Air Grains Sensor
Measures the mass of water vapor in return air
Return Air Humidity Sensor
Measures the relative humidity of return air
Return Air Humidity Setpoint
Humidity setpoint for return air
Return Air Plenum
A component of the HVAC the receives air from the room to recirculate or exhaust to or from the building
Return Air Temperature High Reset Setpoint
Return Air Temperature Low Reset Setpoint
Return Air Temperature Sensor
Measures the temperature of return air
Return Chilled Water Temperature Setpoint
Return Condenser Water Flow Sensor
Return Condenser Water Temperature Sensor
Return Condenser Water Temperature Setpoint
Return Damper
A damper that modulates the flow of return air
Return Fan
Fan moving return air -- air that is circulated from the building back into the HVAC system
Return Heating Valve
A valve installed on the return side of a heat exchanger
Return Hot Water Temperature Setpoint
Reversing Valve
Riser
A vertical shaft indented for installing building infrastructure e.g., electrical wire, network communication wire, plumbing, etc
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Riser
Rooftop
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:RoofLevel
Room Air Temperature Sensor
Run Enable Command
Run Request Status
Indicates if a request has been filed to start a device or equipment
Safety Shower
Sash Position Sensor
Measures the current position of a sash in terms of the percent of fully open
Schedule Temperature Setpoint
The current setpoint as indicated by the schedule
Sensor Failure Alarm
Server Room
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:DataServerRoom
Shared Office
An office used by multiple people
Short Cycle Alarm
An alarm that indicates a short cycle occurred. A short cycle occurs when a cooling cycle is prevented from completing its full cycle
Shower
A space containing showers, usually adjacent to an athletic or execise area
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:ShowerRoom
Smoke Detector
Soil Temperature Sensor
Measures the temperature of soil
Solar Azimuth Angle Sensor
Measures the azimuth angle of the sun
Solar Radiance
The amount of light that passes through or is emitted from the sun and falls within a given solid angle in a specified direction
Solar Radiance Sensor
The class 'Solar_Radiance_Sensor' is deprecated in favor of 'Solar_Irradiance_Sensor'. The new name better reflects the standard unit of measurement, watts per square meter (W/m²), and aligns with the terminology commonly used in solar applications.
Solar Zenith Angle Sensor
Measures the zenith angle of the sun
Space Heater
A heater used to warm the air in an enclosed area, such as a room or office
Speed Command
A command to set speed to a certain degree.
Speed Reset Command
Speed Status
Speed Status is no longer necessary. Use Speed Mode Status for motors with various categorical speed settings, such as low, medium, and high. To further clarify, points representing the current speed of a variable speed fan as an analog value or input, use Speed Sensor.
Sports Service Room
A class of spaces used in the support of sports
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Sports_Service_Room
Stage Enable Command
A point representing a discrete stage which the equipment should be operating at. The desired stage number should be identified by an entity property
Stage Riser
A low platform in a space or on a stage
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Stage_Riser
Stages Status
Indicates which stage a control loop or equipment is in
Staircase
A vertical space containing stairs
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Stairwell
Standby CRAC
A CRAC that is activated as part of a lead/lag operation or when an alarm occurs in a primary unit
Standby Cooling Zone Air Temperature Setpoint
Standby Fan
Fan that is activated as part of a lead/lag operation or when a primary fan raises an alarm
Standby Glycool Unit On Off Status
Indicates the on/off status of a standby glycool unit
Standby Heating Zone Air Temperature Setpoint
Standby Target Zone Air Temperature Setpoint
Start Stop Command
A Start/Stop Command controls or reports the active/inactive status of a control sequence
Brick-defined quantity 'Static_Pressure' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/StaticPressure' directly.
Static Transfer Switch
Similar to ATS, but utilises no moving parts in the switch to achieve much faster response times.
Steam Baseboard Radiator
Steam heating device located at or near the floor
Steam Distribution
Utilize a steam distribution source to represent how steam is distributed across multiple destinations
Steam On Off Command
Steam Pressure Reducing Valve
Valve designed to reduce steam pressure from a high to a manageable level; maintains uniform steam outlet pressure.
Steam Pressure Relief Valve
Valve designed to automatically relieve excessive steam pressure.
Steam System
The equipment, devices and conduits that handle the production and distribution of steam in a building
Steam Usage Sensor
Measures the amount of steam that is consumed or used, over some period of time
Studio
A room used for the production or media, usually with either a specialized set or a specialized sound booth for recording
Supply Chilled Water Temperature Setpoint
Supply Condenser Water Flow Sensor
Supply Condenser Water Temperature Sensor
Supply Condenser Water Temperature Setpoint
Surveillance Camera
Switch Room
A telecommuncations room housing network switches
Switch Status
Status of a switch
System Shutdown Status
Indicates if a system has been shutdown
TETRA Room
A room used for local two-way radio networks, e.g. the portable radios carried by facilities staff
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for TETRA_Room
TVOC Level Sensor
A sensor measuring the level of all VOCs in air
Tablet
A flat, handheld mobile computer, usually with a touchscreen
Team Room
An office used by multiple team members for specific work tasks. Distinct from Conference Room
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:TeamRoom
Brick-defined generic quantity 'Temperature' is deprecated for direct use. Use the equivalent QUDT quantity 'qudt:QuantityKind/Temperature' directly, or more specific Brick quantities like brick:Dry_Bulb_Temperature, brick:Wet_Bulb_Temperature, etc., which now subclass the QUDT quantity.
Temperature Adjust Sensor
Measures user-provided adjustment of temperature
Temperature Alarm Sensitivity Parameter
A parameter indicates the sensitivity to activate a temperature alarm.
Temperature Tolerance Parameter
A parameter determining the difference between upper and lower limits of temperature.
Temporary Occupancy Status
For systems that differentiate between scheduled occupied/unoccupied mode, this indicates if a space is temporarily occupied when it would otherwise be unoccupied
Brick-defined quantity 'Thermal_Energy' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/ThermalEnergy' directly.
Thermal Energy Usage Sensor
A sensor that records the quantity of thermal energy consumed in a given period
Thermal Expansion Valve
An type of metering device that automatically adjusts refrigerant flow based on temperature changes, using a sensing bulb
Thermal Power Meter
A standalone thermal power meter
Thermostat Equipment
Thermostat Status
Status of a thermostat
Thermostatic Mixing Valve
A valve that blends hot water with cold water to ensure constant, safe shower and bath outlet temperatures, preventing scalding.
Ticketing Booth
A room or space used to sell or distribute tickets to events at a venue
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Ticketing_Booth
Brick-defined quantity 'Time' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/Time' directly.
Tint Command
The target level of window tint.
Tint Status
The current level of window tint, errors, or transient states.
Touchpanel
A switch used to operate all or part of a lighting installation that uses a touch-based mechanism (typically resistive or capacitive) rather than a mechanical actuator
Transfer Fan
A fan that transfers air from a space to another space.
Transformer
A Transformer is usually fed by a high-voltage source and then steps down the voltage to a lower-voltage feed for low-voltage application (such as lights). Transformers also can step up voltage, but this generally does not apply to in building distribution.
Transformer Room
An electrical room where electricity enters and is transformed to different voltages and currents by the equipment contained in the room
Tunnel
An enclosed space that connects buildings. Often underground
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Tunnel
Underfloor Air Plenum
An open space between a structural concrete slab and the underside of a raised access floor system that connects to an air handling unit to receive conditioned and/or ventilating air before delivery to the room(s)
Underfloor Air Plenum Static Pressure Sensor
Measures the outward push of air against the plenum surfaces and used to measure the resistance when air moves through the plenum
Underfloor Air Plenum Static Pressure Setpoint
Sets the underfloor air plenum static pressure
Underfloor Air Temperature Sensor
Measures the temperature of underfloor air
Unit Failure Alarm
An alarm that indicates the failure of an equipment or device
Unoccupied Air Temperature Cooling Setpoint
'Unoccupied_Air_Temperature_Cooling_Setpoint' is deprecated in favor of further specifying that it is a zone air setpoint.
Unoccupied Air Temperature Heating Setpoint
'Unoccupied_Air_Temperature_Heating_Setpoint' is deprecated in favor of further specifying that it is a zone air setpoint.
Unoccupied Cooling Mode Status
Indicates whether a system, device or control loop is in an unoccupied cooling mode
Unoccupied Cooling Temperature Deadband Setpoint
Unoccupied Cooling Temperature Setpoint
Unoccupied Heating Mode Status
Indicates whether a system, device or control loop is in an unoccupied heating mode
Unoccupied Heating Temperature Deadband Setpoint
Unoccupied Heating Temperature Setpoint
Unoccupied Humidity Setpoint
Target humidity level when the location is unoccupied.
Unoccupied Return Air Temperature Setpoint
Unoccupied Room Air Temperature Setpoint
Unoccupied Zone Air Temperature Setpoint
'Unoccupied_Zone_Air_Temperature_Setpoint' is deprecated in favor of further specifying that it is a target setpoint
VFD Enable Command
Enables operation of a variable frequency drive
VRF System
Valve Position Alarm
An alarm that indicates that the valve position is not in a normal state.
Valve Position Command
Controls the position (the degree of openness) of a valve
Valve Position Sensor
Measures the current position of a valve in terms of the percent of fully open
Valve Status
The current status of the valve.
Brick-defined quantity 'Velocity_Pressure' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/DynamicPressure' directly.
Velocity Pressure Setpoint
Sets static veloicty pressure
Vent Operating Mode Status
Indicates the current operating mode of a vent
Ventilation Air Flow Ratio Limit
A parameter that places a lower or upper bound on the range of permitted values of a Ventilation_Air_Flow_Ratio_Setpoint.
Ventilation Air System
The equipment, devices, and conduits that handle the introduction and distribution of ventilation air in the building
Video Intercom
Visitor Lobby
A lobby for visitors to the building. Sometimes used to distinguish from an employee entrance looby
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Lobby
Brick-defined quantity 'Voltage' is deprecated. Use the equivalent QUDT quantity 'qudt:QuantityKind/Voltage' directly.
Voltage Angle
Angle of voltage phasor
Voltage Imbalance Sensor
A sensor which measures the voltage difference (imbalance) between phases of an electrical system
Voltage Ratio Setpoint
Sets the ratio of voltage in a transformer
Volume
Wall Air Conditioner
A wall air conditioner, also known as a window air conditioner when installed in a window frame, is a self-contained unit that cools a room by drawing in warm air, cooling it over a refrigerant coil, and recirculating it back into the space.
Wall Fan Coil Unit
A wall-mounted fan coil unit used for individual room heating and cooling, often found in hotels, apartments, and offices
Wardrobe
Storage for clothing, costumes, or uniforms
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:CloakRoom
Warm Cool Adjust Sensor
User provided adjustment of zone temperature, typically in the range of +/- 5 degrees
Warmest Zone Air Temperature Sensor
The zone temperature that is warmest; drives the supply temperature of cold air. A computed value rather than a physical sensor. Also referred to as a 'Highest Zone Air Temperature Sensor'
Waste Amount Sensor
A metric used for measuring the quantity of waste generated in a building.
Waste Meter
A Waste Meter is used for tracking and categorizing various waste types in a building, aiding in waste management facilitating waste reduction, recycling, and disposal strategies.
Waste Storage
A room used for storing waste such as trash or recycling
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:WasteManagementRoom
Water Cooled Chiller
A chiller system using water in the heat exchange process, employed in industrial or commercial facilities for cooling
Water Differential Temperature Setpoint
Sets the target differential temperature between the start and end of a heat transfer cycle in a water circuit
Water Distribution
Utilize a water distribution source to represent how water is distributed across multiple destinations (pipes)
Water Loss Alarm
An alarm that indicates a loss of water e.g. during transport
Water Pressure Reducing Valve
Valve specifically designed to reduce high water pressure to a usable level; maintains uniform water outlet pressure.
Water Pressure Relief Valve
Valve designed to automatically relieve excessive water pressure.
Water Pressure Setpoint
Water Tank
A space used to hold water. This will likely be deprecated in future releases of Brick for the sake of clarity w.r.t. equipment classification of tanks
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Water_Tank
Brick-defined quantity 'Weather_Condition' is deprecated.
Weather Station
A dedicated weather measurement station
Wind Direction Sensor
Measures the direction of wind in degrees relative to North
Wind Speed Sensor
Measured speed of wind, caused by air moving from high to low pressure
Workshop
A space used to house equipment that can be used to repair or fabricate things
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Workshop
Zone Air Conditioning Mode Status
Indicates the mode of AC for a zone
Zone Air Cooling Temperature Setpoint
The upper (cooling) setpoint for zone air temperature
'Zone_Air_Cooling_Temperature_Setpoint' is deprecated to support new naming convention, which reorders intended behaviour (cooling) before the substance (zone air).
Zone Air Dewpoint Sensor
Measures dewpoint of zone air
Zone Air Heating Temperature Setpoint
The lower (heating) setpoint for zone air temperature
'Zone_Air_Heating_Temperature_Setpoint' is deprecated to support new naming convention, whic reorders intended behaviour (heating) before the substance (zone air)
Zone Air Humidity Sensor
Measures the relative humidity of zone air
Zone Air Humidity Setpoint
Humidity setpoint for zone air
Zone CO2 Level Sensor
A physical or virtual sensor which represents the CO2 level of an HVAC Zone
Zone Damper
Dampers open and close to regulate zone temperatures in an HVAC system.
Zone Occupied Load Shed Command
Zone Standby Load Shed Command
Zone Unoccupied Load Shed Command
Infers a BACnetReference instance from the object of an hasExternalReference.
All ExternalReference must have an rdfs:label
All ExternalReference must have an skos:definition
SELECT ?this WHERE { ?this rdfs:subClassOf+ ref:ExternalReference . }
Infers a IFCReference instance from the object of an hasExternalReference.
An entity can only have one 'preferred' External Reference
Infers a TimeseriesReference instance from the object of an hasExternalReference.
The property of the BACnet object to read to get the current value of this entity.
Metadata for accessing related timeseries data: Relates a data source (such as a Brick Point or 223 Property) to the TimeseriesReference that indicates where and how the data for this point is stored
CONSTRUCT { $this brick:electricVehicleChargerDirectionality [ brick:value "unidirectional"^^xsd:string ] } WHERE { $this rdf:type brick:Electric_Vehicle_Charging_Station . FILTER NOT EXISTS { $this brick:electricVehicleChargerDirectionality ?direction . } FILTER NOT EXISTS { $this brick:hasPart ?port . ?port a brick:Electric_Vehicle_Charging_Port . ?port brick:electricVehicleChargerDirectionality ?other_direction . } }
CONSTRUCT { $this rdf:type ?newtype . } WHERE { $this brick:meters ?bldg . ?bldg rdf:type/rdfs:subClassOf* brick:Building . $this rdf:type ?type . BIND(IRI(CONCAT("https://brickschema.org/schema/Brick#Building_", strafter(str(?type), "https://brickschema.org/schema/Brick#"))) as ?newtype) . FILTER (strEnds(str(?type), "_Meter")) FILTER (!strStarts(str(?type), "https://brickschema.org/schema/Brick#Building_")) }
CONSTRUCT { $this rec:includes ?eq . } WHERE { $this brick:hasPart ?eq . { ?eq rdf:type/rdfs:subClassOf* brick:Equipment . } UNION { ?eq rdf:type/rdfs:subClassOf* brick:Collection . } UNION { ?eq rdf:type/rdfs:subClassOf* brick:System . } }
CONSTRUCT { $this a ?newClass . } WHERE { $this a ?class . ?class owl:deprecated true . ?class brick:isReplacedBy ?newClass . FILTER NOT EXISTS {$this a ?newClass} }
Deprecated class is temporarily augmented by the new class
{$this} has type {?class} which was deprecated in version {?depver}. For now, it has been updated to also be of type {?newClass}.
SELECT $this ?class ?newClass ?depver WHERE { $this a ?class . ?class owl:deprecated true . ?class brick:deprecatedInVersion ?depver . ?class brick:isReplacedBy ?newClass . }
CONSTRUCT { ?s ?t2 ?o . } WHERE { ?s $this ?o . { $this owl:equivalentProperty ?t2 } UNION { ?t2 owl:equivalentProperty $this } }
CONSTRUCT { $this ?invP ?o . } WHERE { ?o ?p $this . ?invP owl:inverseOf ?p . }
CONSTRUCT { $this ?p ?o . } WHERE { ?o ?invP $this . ?invP owl:inverseOf ?p . }
CONSTRUCT { $this rec:value ?v } WHERE { $this brick:value ?v }
CONSTRUCT { ?o ?prop $this . $this ?prop ?o . } WHERE { { $this ?prop ?o } UNION { ?o ?prop $this } . ?prop a owl:SymmetricProperty . }
CONSTRUCT { $this brick:electricVehicleChargerDirectionality ?direction } WHERE { $this rdf:type brick:Electric_Vehicle_Charging_Port . $this brick:isPartOf ?charger . ?charger a brick:Electric_Vehicle_Charging_Station . ?charger brick:electricVehicleChargerDirectionality ?direction . FILTER NOT EXISTS { $this brick:electricVehicleChargerDirectionality ?other_direction . } }
CONSTRUCT { $this rdf:type ?metertype . } WHERE { $this rdf:type/rdfs:subClassOf* brick:Building_Meter . $this brick:hasSubstance ?substance . ?metertype brick:hasSubstance ?substance . ?metertype rdfs:subClassOf+ brick:Building_Meter . }
CONSTRUCT { $this rdf:type ?metertype . } WHERE { $this rdf:type/rdfs:subClassOf* brick:Meter . $this brick:hasSubstance ?substance . ?metertype brick:hasSubstance ?substance . FILTER NOT EXISTS { $this rdf:type/rdf:subClassOf* brick:Building_Meter } MINUS { ?metertype rdfs:subClassOf* brick:Building_Meter . } }
CONSTRUCT { $this brick:hasSubstance ?substance . } WHERE { $this rdf:type ?meter . ?meter rdfs:subClassOf* brick:Meter . ?meter brick:hasSubstance ?substance . }
Relationship between meters is hasSubMeter/isSubMeterOf, not meters/isMeteredBy
URIs in the Brick namespace must have a class or be an instance of Substance, Quantity, or Tag.
PREFIX brick: <https://brickschema.org/schema/Brick#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX owl: <http://www.w3.org/2002/07/owl#> PREFIX sh: <http://www.w3.org/ns/shacl#> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> SELECT $this WHERE { FILTER NOT EXISTS { $this owl:deprecated true } FILTER(isIRI($this)) FILTER(STRSTARTS(STR($this), "https://brickschema.org/schema/Brick#")) FILTER NOT EXISTS { { $this a owl:Class, sh:NodeShape ; rdfs:subClassOf* brick:Entity } UNION { $this a brick:Substance } UNION { $this a brick:Quantity } UNION { $this a brick:Tag } UNION { $this a brick:EntityProperty } UNION { $this a owl:ObjectProperty } UNION { $this a owl:DatatypeProperty } UNION { $this a rdf:Property } UNION { $this a sh:NodeShape } UNION { $this rdf:type/rdfs:subClassOf* brick:Relationship } } }
SELECT DISTINCT ?this WHERE { { ?this ?p ?o } UNION { ?s ?p ?this } }
Properties in the Brick namespace must be an instance of EntityProperty/Relationship and ObjectProperty/DatatypeProperty.
PREFIX brick: <https://brickschema.org/schema/Brick#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX owl: <http://www.w3.org/2002/07/owl#> SELECT $this WHERE { FILTER NOT EXISTS { $this owl:deprecated true } FILTER(isIRI($this)) FILTER(STRSTARTS(STR($this), "https://brickschema.org/schema/Brick#")) FILTER NOT EXISTS { { $this a brick:Relationship } UNION { $this a brick:EntityProperty } { $this a owl:ObjectProperty } UNION { $this a owl:DatatypeProperty } } }
SELECT DISTINCT ?this WHERE { ?s ?this ?o }
CONSTRUCT { ?s a ?t2 . } WHERE { ?s a $this . { ?t2 owl:equivalentClass $this } UNION { $this owl:equivalentClass ?t2 } }
Object and Datatype properties must be disjoint.
Only one last known value per entity is allowed
Brick Points should have associated quantity kinds
SELECT ?this WHERE { ?this rdfs:subClassOf+ brick:Sensor . FILTER NOT EXISTS { ?class owl:deprecated true } }
SELECT ?this WHERE { ?this rdfs:subClassOf+ brick:Setpoint . FILTER NOT EXISTS { ?class owl:deprecated true } }
CONSTRUCT { ?val a ?shape . } WHERE { $this rdfs:range ?shape . ?shape a sh:NodeShape . ?ent $this ?val . FILTER NOT EXISTS { ?val a ?shape } }
CONSTRUCT { ?s ?super ?skolemized . ?skolemized ?ep ?eo . } WHERE { $this rdfs:subPropertyOf+ ?super . ?super a brick:EntityProperty . $this a brick:EntityProperty . ?s $this ?o . BIND(IF(isBlank(?o), IRI(CONCAT("urn:skolem:", STRUUID())), ?o) AS ?skolemized) ?o ?ep ?eo . }
CONSTRUCT { $this brick:hasQuantity ?quantity . } WHERE { $this rdfs:subClassOf+ ?parent . ?parent brick:hasQuantity ?quantity . FILTER NOT EXISTS { $this brick:hasQuantity ?quantity . } }
PREFIX brick: <https://brickschema.org/schema/Brick#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT DISTINCT ?this WHERE { ?this rdfs:subClassOf+ brick:Sensor }
CONSTRUCT { ?s ?t2 ?o . } WHERE { ?s $this ?o . { $this rdfs:subPropertyOf ?t2 } }
CONSTRUCT { $this brick:hasTag ?tag . } WHERE { $this rdf:type/rdfs:subClassOf* ?class . ?class brick:hasAssociatedTag ?tag . }
Only Brick Points can have external timeseries references
SELECT $this WHERE { $this ref:hasExternalReference ?ref . ?ref rdf:type ref:TimeseriesReference . FILTER NOT EXISTS { $this rdf:type/rdfs:subClassOf* brick:Point } }
Only meters can have the isVirtualMeter property be true
SELECT $this WHERE { $this brick:isVirtualMeter/brick:value true . FILTER NOT EXISTS { $this rdf:type/rdfs:subClassOf* brick:Meter } . }
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:ICT_Rack
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:ICT_Equipment
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:ICT_Hardware
REC ICT classes are being phased out in favor of Brick classes. For a replacement, consider brick:Network_Router
used only when property is commandable
used only with array datatype
shall be present if Bacnet/IP, and absent for BACnet/IPv6
used only with monitored properties with a numeric datatype
only if segmented messages
as per 20.1.2.5
as per 20.1.2.4
Other services will be added as they are defined. All choice values in this production are reserved for prototype by ASHRAE. Proprietary extensions are made by using the ConfirmedPrivateTransfer service. See Clause 23.
CHOICE [6] has been intentionally omitted. It parallels the complex-event-type CHOICE [6] of the BACnetNotificationParameters production which was introduced to allow the addition of proprietary event algorithms whose event parameters are not necessarily network-visible. CHOICE [19] has been intentionally omitted. It parallels the change-of-reliability event type CHOICE[19] of the BACnetNotificationParameters production which was introduced for the notification of event state changes to FAULT and from FAULT, which does not have event parameters.
the 6-octet B/IP or 18-octet B/IPv6 address of the registrant
time to live in seconds at time of registration
remaining time to live in seconds, incl. grace period
4 octets for B/IP, or 16 octets for B/IPv6
Internet host name (see RFC 1123)
depends on referenced property
depends on ref property
used only with array datatype; if omitted with an array then the entire array is referenced
used only with array datatype; if omitted with an array the entire array is referenced
used only if 'Item Count' > 0 and the request was either of type 'By Sequence Number' or 'By Time'
used only with array datatypes
present only if all-new-data-accepted = false
must be used as a pair, see 16.10
Absolute Activity
The "Absolute Activity" is the exponential of the ratio of the chemical potential to $RT$ where $R$ is the gas constant and $T$ the thermodynamic temperature.
$\lambda_B = e^{\frac{\mu_B}{RT}}$, where $\mu_B$ is the chemical potential of substance $B$, $R$ is the molar gas constant, and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:AbsoluteActivity
Absorptance
Absorptance is the ratio of the radiation absorbed by a surface to that incident upon it. Also known as absorbance.
$\alpha = \frac{\Phi_a}{\Phi_m}$, where $\Phi_a$ is the absorbed radiant flux or the absorbed luminous flux, and $\Phi_m$ is the radiant flux or luminous flux of the incident radiation.
Applicable units are those of quantitykind:Absorptance
Acceptor Ionization Energy
"Acceptor Ionization Energy" is the ionization energy of an acceptor.
Activity Coefficient
An "Activity Coefficient" is a factor used in thermodynamics to account for deviations from ideal behaviour in a mixture of chemical substances. In an ideal mixture, the interactions between each pair of chemical species are the same (or more formally, the enthalpy change of solution is zero) and, as a result, properties of the mixtures can be expressed directly in terms of simple concentrations or partial pressures of the substances present e.g. Raoult's law. Deviations from ideality are accommodated by modifying the concentration by an activity coefficient.
$f_B = \frac{\lambda_B}{(\lambda_B^*x_B)}$, where $\lambda_B$ the absolute activity of substance $B$, $\lambda_B^*$ is the absolute activity of the pure substance $B$ at the same temperature and pressure, and $x_B$ is the amount-of-substance fraction of substance $B$.
Applicable units are those of quantitykind:ActivityCoefficient
Altitude
Altitude or height is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, and more). As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The reference datum also often varies according to the context. [Wikipedia]
Amount of cloud cover
The amount of the celestial dome covered by all clouds visible.
Applicable units are those of quantitykind:AmountOfCloudCover
Amount of Substance of Concentration
"Amount of Substance of Concentration" is defined as the amount of a constituent divided by the volume of the mixture.
$C_B = \frac{n_B}{V}$, where $n_B$ is the amount of substance $B$ and $V$ is the volume.
"Amount of Substance of Concentration of B" is defined as the amount of a constituent divided by the volume of the mixture.
Fractional Amount of Substance
"Fractional Amount of Substance" is defined as tthe amount of a constituent divided by the total amount of all constituents in a mixture.
$x_B = \frac{n_B}{n}$, where $n_B$ is the amount of substance $B$ and $n$ is the total amount of substance.
Applicable units are those of quantitykind:AmountOfSubstanceFraction
Angular Momentum per Angle
Applicable units are those of quantitykind:AngularMomentumPerAngle
Area Angle
Applicable units are those of quantitykind:AreaAngle
Fläche pro Längeneinheit
area per length
Measure used to indicate the surface area of structural steel per unit length of the steel part.
Applicable units are those of quantitykind:AreaPerLength
Area Thermal Expansion
When the temperature of a substance changes, the energy that is stored in the intermolecular bonds between atoms changes. When the stored energy increases, so does the length of the molecular bonds. As a result, solids typically expand in response to heating and contract on cooling; this dimensional response to temperature change is expressed by its coefficient of thermal expansion.
Applicable units are those of quantitykind:AreaThermalExpansion
Asset
An Asset is an economic resource owned by a business or company. Simply stated, assets are things of value that can be readily converted into cash (although cash itself is also considered an asset).
Atmospheric Pressure
The pressure exerted by the weight of the air above it at any point on the earth's surface. At sea level the atmosphere will support a column of mercury about $760 mm$ high. This decreases with increasing altitude. The standard value for the atmospheric pressure at sea level in SI units is $101,325 pascals$.
Atom Scattering Factor
"Atom Scattering Factor" is measure of the scattering power of an isolated atom.
$f = \frac{E_a}{E_e}$, where $E_a$ is the radiation amplitude scattered by the atom and $E_e$ is the radiation ampliture scattered by a single electron.
Applicable units are those of quantitykind:AtomScatteringFactor
Atomic Number
The "Atomic Number", also known as the proton number, is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus. A nuclide is a species of atom with specified numbers of protons and neutrons. Nuclides with the same value of Z but different values of N are called isotopes of an element. The ordinal number of an element in the periodic table is equal to the atomic number. The atomic number equals the charge of the nucleus in units of the elementary charge.
Applicable units are those of quantitykind:AtomicNumber
Average Logarithmic Energy Decrement
"Average Logarithmic Energy Decrement" is a measure of the amount of energy a neutron loses upon colliding with various nuclei. It is the average value of the increase in lethargy in elastic collisions between neutrons and nuclei whose kinetic energy is negligible compared with that of the neutrons.
Applicable units are those of quantitykind:AverageLogarithmicEnergyDecrement
battery capacity
quantity of electricity or electrical charge which a fully charged battery can supply under specified conditions as a product of discharge current and discharge time
Elektrizitätsmenge oder elektrische Ladung, die eine vollgeladenen Batterie unter festgelegten Bedingungen abgeben kann als Produkt aus Entladestrom und Entladezeit
Applicable units are those of quantitykind:BatteryCapacity
Binding Fraction
The "Binding Fraction" is the ratio of the binding energy of a nucleus to the atomic mass number.
$b = \frac{B_r}{A}$, where $B_r$ is the relative mass defect and $A$ is the nucleon number.
Applicable units are those of quantitykind:BindingFraction
Bioconcentration Factor
The bioconcentration factor is the ratio of the concentration of a chemical substance in biota over the concentration of the same chemical substance in water. It is related to the octanol-water partition coefficient.
Applicable units are those of quantitykind:BioconcentrationFactor
Biodegredation Half Life
A time that quantifies how long it takes to reduce a substance's concentration by 50% from any concentration point in time in a water or soil environment by either bacteria or another living organism.
Applicable units are those of quantitykind:BiodegredationHalfLife
Burn Rate
burst factor
bursting pressure divided by areic mass
Quotient Berstdruck dividiert durch die flächenbezogene Masse
Applicable units are those of quantitykind:BurstFactor
Capacity
In computer operations, (a) the largest quantity which can be stored, processed, or transferred; (b) the largest number of digits or characters which may regularly be processed; (c) the upper and lower limits of the quantities which may be processed. In other contexts, the amount of material that can be stored, such as fuel or food.
Charge Number
The "Charge Number", or just valance of an ion is the coefficient that, when multiplied by the elementary charge, gives the ion's charge.
Applicable units are those of quantitykind:ChargeNumber
Chemical Affinity
In chemical physics and physical chemistry, "Chemical Affinity" is the electronic property by which dissimilar chemical species are capable of forming chemical compounds. Chemical affinity can also refer to the tendency of an atom or compound to combine by chemical reaction with atoms or compounds of unlike composition.
$A = -\sum \nu_b\mu_B$, where $\nu_b$ is the stoichiometric number of substance $B$ and $\mu_B$ is the chemical potential of substance $B$.
Applicable units are those of quantitykind:ChemicalAffinity
جهد كيميائي
Chemický potenciál
chemisches Potential des Stoffs B
chemical potential
potencial químico
پتانسیل شیمیایی
potential chimique
potenziale chimico
化学ポテンシャル
Keupayaan kimia
Potencjał chemiczny
Potențial chimic
Химический потенциал
kimyasal potansiyel
化学势
"Chemical Potential", also known as partial molar free energy, is a form of potential energy that can be absorbed or released during a chemical reaction.
$\mu_B = (\frac{\partial G}{\partial n_B})_{T,p,n_i}$, where $G$ is Gibbs energy, and $n_B$ is the amount of substance $B$.
Chromaticity
Chromaticity is an objective specification of the quality of a color regardless of its luminance
Applicable units are those of quantitykind:Chromaticity
CoefficientOfPerformance
"Coefficient of Performance",is a measure of the efficiency of a heating or cooling system, defined as the ratio of useful heating or cooling output to the energy input required to achieve it.
""Coefficient of Performance",is a measure of the efficiency of a heating or cooling system, defined as the ratio of useful heating or cooling output to the energy input required to achieve it.
Applicable units are those of quantitykind:CoefficientOfPerformance
Coercivity
$\textit{Coercivity}$, also referred to as $\textit{Coercive Field Strength}$, is the magnetic field strength to be applied to bring the magnetic flux density in a substance from its remaining magnetic flux density to zero. This is defined as the coercive field strength in a substance when either the magnetic flux density or the magnetic polarization and magnetization is brought from its value at magnetic saturation to zero by monotonic reduction of the applied magnetic field strength. The quantity which is brought to zero should be stated, and the appropriate symbol used: $H_{cB}$, $H_{cJ}$ or $H_{cM}$ for the coercivity relating to the magnetic flux density, the magnetic polarization or the magnetization respectively, where $H_{cJ} = H_{cM}$.
Applicable units are those of quantitykind:Coercivity
Conductivity Variance, NEON
Variance for NEON conductivity data measured in MicroS-PER-CM
Applicable units are those of quantitykind:ConductivityVariance_NEON
Constringence
In optics and lens design, constringence of a transparent material, also known as the Abbe number or the V-number, is an approximate measure of the material's dispersion (change of refractive index versus wavelength), with high values of V indicating low dispersion.
Applicable units are those of quantitykind:Constringence
Abbe Number
V-number
Kosten pro Fläche
cost per area
In the construction industry, cost per area is the unit rate which, when multiplied by the gross internal floor area (GIFA), gives the total building works estimate (i.e.works cost estimate less main contractor’s preliminaries and main contractor’s overheads and profit).
Applicable units are those of quantitykind:CostPerArea
Kosten pro Masse
cost per mass
Represents the cost associated with a unit mass of a substance or material. It is typically used in economic and engineering contexts to evaluate the expense incurred per kilogram, gram, or other units of mass. This measure helps in comparing the economic efficiency of different materials or substances based on their mass.
Applicable units are those of quantitykind:CostPerMass
coupling factor
constante de acoplamiento
constante de couplage
fattore di accoppiamento
結合定数
stała sprzężenia
Constantă de cuplaj
Константа взаимодействия
Çiftlenim sabiti
耦合常數
"Coupling Factor" is the ratio of an electromagnetic quantity, usually voltage or current, appearing at a specified location of a given circuit to the corresponding quantity at a specified location in the circuit from which energy is transferred by coupling.
For inductive coupling between two inductive elements, $k = \frac{\left | L_{mn} \right |}{\sqrt{L_m L_n}}$, where $L_m$ and $L_n$ are their self inductances, and $L_{mn}$ is their mutual inductance.
Applicable units are those of quantitykind:CouplingFactor
Debye-Waller Factor
"Debye-Waller Factor" (DWF), named after Peter Debye and Ivar Waller, is used in condensed matter physics to describe the attenuation of x-ray scattering or coherent neutron scattering caused by thermal motion. Also, a factor by which the intensity of a diffraction line is reduced because of the lattice vibrations.
Applicable units are those of quantitykind:Debye-WallerFactor
Decay Constant
The "Decay Constant" is the proportionality between the size of a population of radioactive atoms and the rate at which the population decreases because of radioactive decay.
Relative variation $\frac{dN}{N}$ of the number $N$ of atoms or nuclei in a system, due to spontaneous emission from these atoms or nuclei during an infinitesimal time interval, divided by its duration $dt$, thus $\lambda = -\frac{1}{N}\frac{dN}{dt}$.
Applicable units are those of quantitykind:DecayConstant
Degree of Dissociation
The "Degree of Dissociation" is the fraction of original solute molecules that have dissociated.
Applicable units are those of quantitykind:DegreeOfDissociation
Density of states
"Density of States" is the number of vibrational modes in an infinitesimal interval of angular frequency divided by the range of that interval and by volume.
Applicable units are those of quantitykind:DensityOfStates
Diastolic Blood Pressure
The pressure of blood in the arteries which rises to a maximum as blood is pumped out by the left ventricle (systole) and drops to a minimum in diastole. The systolic/diastolic pressure is normally ~120/80 mmHg in a young adult.
Diffusionskoeffizient
diffusion coefficient
coeficiente de difusión
coefficient de diffusion
coefficiente di diffusione
coeficiente de difusão
difuzijski koeficient
The "Diffusion Coefficient" is a proportionality constant between the molar flux due to molecular diffusion and the gradient in the concentration of the species (or the driving force for diffusion). Diffusivity is encountered in Fick's law and numerous other equations of physical chemistry.
$C_B \left \langle \nu_B \right \rangle = -D grad C_B$, where $C_B$ the local molecular concentration of substance $B$ in the mixture and $\left \langle \nu_B \right \rangle$ is the local average velocity of the molecules of $B$.
Applicable units are those of quantitykind:DiffusionCoefficient
Dissipance
Dissipance, or dissipation factor for sound power, is the ratio of dissipated sound power to incident sound power. The dissipation factor (DF) is a measure of loss-rate of energy of a mode of oscillation (mechanical, electrical, or electromechanical) in a dissipative system. It is the reciprocal of quality factor, which represents the quality of oscillation.
$\delta = \frac{P_d}{P_i}$, where $P_d$ is the dissipated sound power, and $P_i$ is the incident sound power.
Applicable units are those of quantitykind:Dissipance
Donor Ionization Energy
"Donor Ionization Energy" is the ionization energy of a donor.
Dose Equivalent Quality Factor
"Dose Equivalent Quality Factor" is a factor in the caculation and measurement of dose equivalent, by which the absorbed dose is to be weighted in order to account for different biological effectiveness of radiations, for radiation protection purposes.
Applicable units are those of quantitykind:DoseEquivalentQualityFactor
Applicable units are those of quantitykind:DotsPerInch
Applicable units are those of quantitykind:EarthquakeMagnitude
Effective Multiplication Factor
The "Effective Multiplication Factor" is the multiplication factor for a finite medium.
Applicable units are those of quantitykind:MultiplicationFactor
Applicable units are those of quantitykind:EinsteinCoefficients
Einstein Transition Probability
Given two atomic states of energy $E_j$ and $E_k$. Let $E_j > E_k$. Assume the atom is bathed in radiation of energy density $u(w)$. Transitions between these states can take place in three different ways. Spontaneous, induced/stimulated emission, and induced absorption. $A_jk$ represents the Einstein transition probability for spontaneous emission.
$\frac{-dN_j}{dt} = A_jkN_j$, where $-dN_j$ is the number of molecules spontaneously leaving the state j for the state k during a time interval of duration $dt$, $N_j$ is the number of molecules in the state j, and $E_j > E_k$.
Applicable units are those of quantitykind:EinsteinTransitionProbability
Electric Charge Line Density
In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions. More specifically: the linear, surface, or volume charge density is the amount of electric charge per unit length, surface area, or volume, respectively. The respective SI units are $C \cdot $, $m^{-1}$, $C \cdot m^{-2}$ or $C \cdot m^{-3}$.
Applicable units are those of quantitykind:ElectricChargeLineDensity
Electric Charge Linear Density
In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions. More specifically: the linear, surface, or volume charge density is the amount of electric charge per unit length, surface area, or volume, respectively.
$\rho_l = \frac{dQ}{dl}$, where $Q$ is electric charge and $l$ is length.
Applicable units are those of quantitykind:ElectricChargeLinearDensity
Electric Current per Angle
Applicable units are those of quantitykind:ElectricCurrentPerAngle
Electric Current per Energy
Applicable units are those of quantitykind:ElectricCurrentPerEnergy
Cubic Electric Dipole Moment per Square Energy
Applicable units are those of quantitykind:ElectricDipoleMoment_CubicPerEnergy_Squared
Quartic Electric Dipole Moment per Cubic Energy
Applicable units are those of quantitykind:ElectricDipoleMoment_QuarticPerEnergy_Cubic
Electric Displacement
In a dielectric material the presence of an electric field E causes the bound charges in the material (atomic nuclei and their electrons) to slightly separate, inducing a local electric dipole moment. The Electric Displacement Field, $D$, is a vector field that accounts for the effects of free charges within such dielectric materials. This describes also the charge density on an extended surface that could be causing the field.
$D = \epsilon_0 E + P$, where $\epsilon_0$ is the electric constant, $E$ is electric field strength, and $P$ is electric polarization.
قابلية استقطاب
Polarizovatelnost
elektrische Polarisierbarkeit
electric polarizability
Polarizabilidad
قطبیت پذیری الکتریکی
Polarisabilité
polarizzabilità elettrica
分極率
Kepengkutuban elektrik
Polaryzowalność
polarizabilidade
Поляризуемость
Kutuplanabilirlik
極化性
"Electric Polarizability" is the relative tendency of a charge distribution, like the electron cloud of an atom or molecule, to be distorted from its normal shape by an external electric field, which is applied typically by inserting the molecule in a charged parallel-plate capacitor, but may also be caused by the presence of a nearby ion or dipole.
$\alpha_{i,j} = \frac{\partial p_i}{\partial E_j}$, where $p_i$ is the cartesian component along the $i-axis$ of the electric dipole moment induced by the applied electric field strength acting on the molecule, and $E_j$ is the component along the $j-axis$ of this electric field strength.
Applicable units are those of quantitykind:ElectricPolarizability
elektrisches Quadrupolmoment
electric quadrupole moment
momento de cuadrupolo eléctrico
گشتاور چهار قطبی الکتریکی
moment quadrupolaire électrique
momento di quadrupolo elettrico
四極子
Momen kuadrupol elektrik
elektryczny moment kwadrupolowy
momento de quadrupolo elétrico
Электрический квадрупольный момент
elektrik kuadrupol momenti
电四极矩
The Electric Quadrupole Moment is a quantity which describes the effective shape of the ellipsoid of nuclear charge distribution. A non-zero quadrupole moment Q indicates that the charge distribution is not spherically symmetric. By convention, the value of Q is taken to be positive if the ellipsoid is prolate and negative if it is oblate. In general, the electric quadrupole moment is tensor-valued.
Applicable units are those of quantitykind:ElectricQuadrupoleMoment
المتأثرية الكهربائية، سرعة التأثر الكهربائية
elektrische Suszeptibilität
electric susceptibility
susceptibilidad eléctrica
susceptibilité électrique
suscettività elettrica
電気感受率
podatność elektryczna
susceptibilidade eléctrica
электрическая восприимчивость
"Electric Susceptibility" is the ratio of electric polarization to electric field strength, normalized to the electric constant. The definition applies to an isotropic medium. For an anisotropic medium, electric susceptibility is a second order tensor.
$\chi = \frac{P}{(\epsilon_0 E)}$, where $P$ is electric polorization, $\epsilon_0$ is the electric constant, and $E$ is electric field strength.
Applicable units are those of quantitykind:ElectricSusceptibility
susceptywność elektryczna
диэлектрическая восприимчивость
electrical conductance
measure of the capability of a material to conduct electric current, the value of which is defined as the reciprocal of the electrical resistance
Maß für die Fähigkeit eines Stoffes, den elektrischen Strom zu leiten, das wertmäßig definiert ist als Kehrwert des elektrischen Widerstandes
Applicable units are those of quantitykind:ElectricalConductance
electrical resistance
unterschiedlich ausgeprägte Eigenschaft von Stoffen, den elektrischen Strom in seiner Bewegung zu hemmen, wenn die freien Ladungsträger in diesen Stoffen durch elektrische Felder und/oder elektrische Potentiale in Bewegung gesetzt werden
different properties of materials which impede the electrical current in its movement when the free charged particles in these materials are set in motion by electrical fields and/or electrical potentials
Applicable units are those of quantitykind:ElectricalResistance
Electromagnetic Permeability Ratio
$\textit{Electromagnetic Permeability Ratio}$ is the ratio of the electromagnetic permeability of a specific medium to the electromagnetic permeability of free space.
The ratio of the electromagnetic permeability of a specific medium to the electromagnetic permeability of free space.
Applicable units are those of quantitykind:ElectromagneticPermeabilityRatio
Elevation relative to NAP
Hoogte ten opzichte van NAP
Height measurement relative to the Normaal Amsterdams Peil (NAP) (en: Amsterdam Ordnance System). Being a form of gravity related height
Applicable units are those of quantitykind:ElevationRelativeToNAP
Emissivity
Emissivity of a material (usually written $\varepsilon$ or e) is the relative ability of its surface to emit energy by radiation.
$\varepsilon = \frac{M}{M_b}$, where $M$ is the radiant exitance of a thermal radiator and $M_b$ is the radiant exitance of a blackbody at the same temperature.
Applicable units are those of quantitykind:Emissivity
Energy Per Area Electric Charge
"Energy Per Area Electric Charge" is the amount of electric energy associated with a unit of area.
Applicable units are those of quantitykind:EnergyPerAreaElectricCharge
Energy Per Square Magnetic Flux Density
"Energy Per Square Magnetic Flux Density" is a measure of energy for a unit of magnetic flux density.
Applicable units are those of quantitykind:EnergyPerMagneticFluxDensity_Squared
Energy and work per mass amount of substance
Applicable units are those of quantitykind:EnergyPerMassAmountOfSubstance
Equilibrium Constant on Concentration Basis
The "Equlilbrium Constant", also known as the thermodynamic equilibrium constant, is an expression that gives us a ratio of the products and reactants of a reaction at equilibrium with respect to a specific unit.
$K_c = \Pi_B(c_B)^{-\nu_B}$, for solutions
Applicable units are those of quantitykind:EquilibriumConstant
The unit is unit:MOL-PER-M3 raised to the N where N is the summation of stoichiometric numbers. I don't know what to do with this.
Equilibrium Constant on Pressure Basis
"Mass Equivalent" is the mass of a substance that reacts with (or is equivalent to) an arbitrary mass of another substance in a given chemical reaction.
Combined Non Evaporative Heat Transfer Coefficient
"Evaporative Heat Transfer Coefficient" is the areic heat transfer coefficient multiplied by the water vapor pressure difference between skind and the environment, and by the exchange area.
Applicable units are those of quantitykind:EvaporativeHeatTransferCoefficient
Fast Fission Factor
"Fast Fission Factor" in an infinite medium, is the ratio of the mean number of neutrons produced by fission due to neutrons of all energies to the mean number of neutrons produced by fissions due to thermal neutrons only.
Applicable units are those of quantitykind:FastFissionFactor
Fish Biotransformation Half Life
A time that quantifies how long its takes to transform 50% of a substance's total concentration from any concentration point in time in fish via whole body metabolic reactions.
Applicable units are those of quantitykind:FishBiotransformationHalfLife
Force Magnitude
The 'magnitude' of a force is its 'size' or 'strength', regardless of the direction in which it acts.
Force per Electric Charge
The electric field depicts the force exerted on other electrically charged objects by the electrically charged particle the field is surrounding. The electric field is a vector field with SI units of newtons per coulomb ($N C^{-1}$) or, equivalently, volts per metre ($V m^{-1}$ ). The SI base units of the electric field are $kg m s^{-3} A^{-1}$. The strength or magnitude of the field at a given point is defined as the force that would be exerted on a positive test charge of 1 coulomb placed at that point
Applicable units are those of quantitykind:ForcePerElectricCharge
g-Factor of Nucleus
The "g-Factor of Nucleus" is associated with the spin and magnetic moments of protons, neutrons, and many nuclei.
$g = \frac{\mu}{I\mu_B}$, where $\mu$ is the magnitude of magnetic dipole moment, $I$ is the nuclear angular momentum quantum number, and $\mu_B$ is the Bohr magneton.
Applicable units are those of quantitykind:GFactorOfNucleus
Gap Energy
"Gap Energy" is the difference in energy between the lowest level of conduction band and the highest level of valence band. It is an energy range in a solid where no electron states can exist.
Gene Family Abundance
The abundance of each gene family in the community. Gene families are groups of evolutionarily-related protein-coding sequences that often perform similar functions. Gene family abundance is reported in RPK (reads per kilobase) units to normalize for gene length.
Applicable units are those of quantitykind:GeneFamilyAbundance
Generalized Coordinate
Generalized Coordinates refers to the parameters that describe the configuration of the system relative to some reference configuration. These parameters must uniquely define the configuration of the system relative to the reference configuration.
$q_i$, where $q_i$ is one of the coordinates that is used to describe the position of the system under consideration, and $N$ is the lowest number of coordinates necessary to fully define the position of the system.
Applicable units are those of quantitykind:GeneralizedCoordinate
Generalized Force
Generalized Forces find use in Lagrangian mechanics, where they play a role conjugate to generalized coordinates.
$\delta A = \sum Q_i\delta q_i$, where $A$ is work and $q_i$ is a generalized coordinate.
Applicable units are those of quantitykind:GeneralizedForce
Generalized Momentum, also known as the canonical or conjugate momentum, extends the concepts of both linear momentum and angular momentum. To distinguish it from generalized momentum, the product of mass and velocity is also referred to as mechanical, kinetic or kinematic momentum.
$p_i = \frac{\partial L}{\partial \dot{q_i}}$, where $L$ is the Langrange function and $\dot{q_i}$ is a generalized velocity.
Applicable units are those of quantitykind:GeneralizedMomentum
Generalized Velocity
Generalized Velocities are the time derivatives of the generalized coordinates of the system.
$\dot{q_i} = \frac{dq_i}{dt}$, where $q_i$ is the generalized coordinate and $t$ is time.
Applicable units are those of quantitykind:GeneralizedVelocity
API Gravity
The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water: if its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks. API gravity is thus an inverse measure of a petroleum liquid's density relative to that of water (also known as specific gravity). It is used to compare densities of petroleum liquids. For example, if one petroleum liquid is less dense than another, it has a greater API gravity. Although API gravity is mathematically a dimensionless quantity (see the formula below), it is referred to as being in 'degrees'. API gravity is graduated in degrees on a hydrometer instrument. API gravity values of most petroleum liquids fall between 10 and 70 degrees.
Applicable units are those of quantitykind:Gravity_API
Growing Degree Days (Cereals)
The sum of excess temperature over 5.5°C, where the temperature is the mean of the minimum and maximum atmospheric temperature in a day. This measure is appropriate for most cereal crops.
Applicable units are those of quantitykind:GrowingDegreeDay_Cereal
Gruneisen Parameter
"Gruneisen Parameter" named after Eduard Grüneisen, describes the effect that changing the volume of a crystal lattice has on its vibrational properties, and, as a consequence, the effect that changing temperature has on the size or dynamics of the lattice.
$\gamma = \frac{\alpha_V}{x_T c_V\rho}$, where $\alpha_V$ is the cubic expansion coefficient, $x_T$ is isothermal compressibility, $c_V$ is specific heat capacity at constant volume, and $\rho$ is mass density.
Applicable units are those of quantitykind:GruneisenParameter
Head End Pressure
Heart Rate
The number of heartbeats per unit of time, usually per minute. The heart rate is based on the number of contractions of the ventricles (the lower chambers of the heart). The heart rate may be too fast (tachycardia) or too slow (bradycardia). The average adult pulse rate at rest is 60–80 per minute, but exercise, injury, illness, and emotion may produce much faster rates.
Applicable units are those of quantitykind:HeartRate
Henry's Law Volatility Constant
A quantity kind that is a proportionality constant that relates the partial pressure of a gas above a liquid and the concentration of the gas dissolved in the liquid. The numerator contains the gaseous concentration and the denominator contains the liquid concentration.
Applicable units are those of quantitykind:HenrysLawVolatilityConstant
Hyperfine Structure Quantum Number
The "Hyperfine Structure Quantum Number" is a quantum number of an atom describing inclination of the nuclear spin with respect to a quantization axis given by the magnetic field produced by the orbital electrons.
Applicable units are those of quantitykind:HyperfineStructureQuantumNumber
Incidence Proportion
Incidence proportion (also known as cumulative incidence) is the number of new cases within a specified time period divided by the size of the population initially at risk. For example, if a population initially contains 1,000 non-diseased persons and 28 develop a condition over two years of observation, the incidence proportion is 28 cases per 1,000 persons per two years, i.e. 2.8% per two years.
Incidence Rate
The incidence rate is a measure of the frequency with which a disease or other incident occurs over a specified time period. It is also known as the incidence density rate or person-time incidence rate, when the denominator is the combined person-time of the population at risk (the sum of the time duration of exposure across all persons exposed)
Infinite Multiplication Factor
The "Infinite Multiplication Factor" is the multiplication factor for an infinite medium or for an infinite repeating lattice.
InternalConversionFactor
The "InternalConversionFactor" describes the rate of internal conversion. It is the ratio of the number of internal conversion electrons to the number of gamma quanta emitted by the radioactive atom in a given transition.
Applicable units are those of quantitykind:InternalConversionFactor
Inverse amount of substance
Applicable units are those of quantitykind:InverseAmountOfSubstance
Inverse Length Temperature
Applicable units are those of quantitykind:InverseLengthTemperature
Inverse Permittivity
Applicable units are those of quantitykind:InversePermittivity
"Ion Concentration" is the number of ions per unit volume. Also known as ion density.
Applicable units are those of quantitykind:InverseVolume
Ion Density
"Ion Density" is the number of ions per unit volume. Also known as ion concentration.
$n^+ = \frac{N^+}{V}$, $n^- = \frac{N^-}{V}$ where $N^+$ and $N^-$ are the number of positive and negative ions, respectively, in a 3D domain with volume $V$.
Ion Transport Number
The "Ion Transport Number" is a quantity which indicates the different contribution of ions to the electric current in electrolytes due to different electrical mobility.
$t_B = \frac{i_B}{i}$, where $i_B$ is the electric current carried by the ion $B$ and $i$ is the total electric current.
Applicable units are those of quantitykind:IonTransportNumber
Landau-Ginzburg Number
"Landau-Ginzburg Number", also known as the Ginzburg-Landau parameter, describes the relationship between London penetration depth and coherence length.
At zero thermodynamic temperature $\kappa = \frac{\lambda_L}{(\varepsilon\sqrt{2})}$, where $\lambda_L$ is London penetration depth and $\varepsilon$ is coherence length.
Applicable units are those of quantitykind:Landau-GinzburgNumber
Lande g-Factor
The "Lande g-Factor" is a particular example of a g-factor, namely for an electron with both spin and orbital angular momenta. It is named after Alfred Landé, who first described it in 1921.
$g = \frac{\mu}{J\mu_B}$, where $\mu$ is the magnitude of magnetic dipole moment, $J$ is the total angular momentum quantum number, and $\mu_B$ is the Bohr magneton.
Applicable units are those of quantitykind:LandeGFactor
Lattice Vector
"Lattice Vector" is a translation vector that maps the crystal lattice on itself.
Leakage Factor
"Leakage Factor" is the ratio of the total magnetic flux to the useful magnetic flux of a magnetic circuit.
$\sigma = 1 - k^2$, where $k$ is the coupling factor.
Applicable units are those of quantitykind:LeakageFactor
Length Energy
Applicable units are those of quantitykind:LengthEnergy
Length Molar Energy
Applicable units are those of quantitykind:LengthMolarEnergy
Length Temperature Time
Applicable units are those of quantitykind:LengthTemperatureTime
Lethargy
The "Lethargy" is a dimensionless logarithm of the ratio of the energy of source neutrons to the energy of neutrons after a collision.
$u = \ln(\frac{E_0}{E})$, where $E_0$ is a reference energy.
Applicable units are those of quantitykind:Lethargy
Linear Compressibility
Linear Compressibility is a measure of the relative length change of a solid as a response to a normal force change.
Applicable units are those of quantitykind:LinearCompressibility
Linear Electric Current
"Linear Electric Linear Current" is the electric current per unit line.
Linear Strain
A strain is a normalized measure of deformation representing the displacement between particles in the body relative to a reference length.
$\xi = \frac{\Delta l}{l_0}$, where $\Delta l$ is the increase in length and $l_0$ is the length in a reference state to be specified.
Applicable units are those of quantitykind:LengthRatio
lineic power
power divided by the associated length
Leistung dividiert durch die zugehörige Länge
Applicable units are those of quantitykind:LineicPower
lineic resolution
graphic resolution capacity of output devices such as printers or of data acquisition such as scanners, as a number of pixels per length
grafisches Auflösungsvermögen von Ausgabegeräten wie Druckern oder von Datenerfassungsgeräten wie Scannern als Anzahl der Bildpunkte je Länge
Applicable units are those of quantitykind:LineicResolution
Octanol Air Partition Coefficient
A dimensionless ratio that is the logarithm of the ratio of a compound's concentration within a two phase mixture of liquid octanol and gaseous air at equilibrium. More simply, it is a comparison of the solubilities of the compound solute in these two immiscible substances.
Applicable units are those of quantitykind:LogOctanolAirPartitionCoefficient
Logarithm of Octanol Water Partition Coefficient
A dimensionless ratio that is the logarithm of the ratio of a compound's concentration within a two phase mixture of octanol and water at equilibrium. More simply, it is a comparison of the solubilities of the compound solute in these two immiscible liquids. This property is used to measure the lipophilicity and the hydrophilicity of a substance.
Applicable units are those of quantitykind:LogOctanolWaterPartitionCoefficient
Long-Range Order Parameter
"Long-Range Order Parameter" is the fraction of atoms in an Ising ferromagnet having magnetic moments in one direction, minus the fraction having magnetic moments in the opposite direction.
Applicable units are those of quantitykind:Long-RangeOrderParameter
Lorenz Coefficient
"Lorenz Coefficient" is part mof the Lorenz curve.
$L = \frac{\lambda}{\sigma T}$, where $\lambda$ is thermal conductivity, $\sigma$ is electric conductivity, and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:LorenzCoefficient
Loss Factor
$\textit{Loss Factor}$ is the inverse of $\textit{Quality Factor}$ and is the ratio of the $\textit{resistance}$ and modulus of $\textit{reactance}$.
$d = \frac{1}{Q}$, where $Q$ is quality factor.
Loss Factor is the inverse of Quality Factor and is the ratio of the resistance and modulus of reactance.
Applicable units are those of quantitykind:LossFactor
Lower Critical Magnetic Flux Density
"Lower Critical Magnetic Flux Density" for type II superconductors, is the threshold magnetic flux density for magnetic flux entering the superconductor.
Luminous Efficacy
Luminous Efficacy is the ratio of luminous flux (in lumens) to power (usually measured in watts). Depending on context, the power can be either the radiant flux of the source's output, or it can be the total electric power consumed by the source.
$K = \frac{\Phi_v}{\Phi}$, where $\Phi_v$ is the luminous flux and $\Phi$ is the corresponding radiant flux.
Applicable units are those of quantitykind:LuminousEfficacy
Luminous Flux Ratio
Luminous Flux Ratio (or Relative Luminous Flux or Relative Luminous Power) is the measure of the perceived power of light. It differs from radiant flux, the measure of the total power of light emitted, in that luminous flux is adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light. It is expressed as a percentage or fraction of full power.
Applicable units are those of quantitykind:LuminousFluxRatio
عدد ماخ
Machovo číslo
Mach-Zahl
Mach number
número de Mach
nombre de Mach
मैक संख्या
numero di Mach
マッハ数n
Nombor Mach
liczba Macha
număr Mach
число Маха
Machovo število
Mach sayısı
马赫
"Mach Number" is a dimensionless quantity representing the speed of an object moving through air or other fluid divided by the local speed of sound. It is commonly used to represent the speed of an object when it is traveling close to or above the speed of sound. The Mach number is commonly used both with objects traveling at high speed in a fluid, and with high-speed fluid flows inside channels such as nozzles, diffusers or wind tunnels. As it is defined as a ratio of two speeds, it is a dimensionless number.
$Ma = \frac{v_o}{c_o}$, where $v_0$ is speed, and $c_o$ is speed of sound.
Applicable units are those of quantitykind:MachNumber
ثابت مادلونك
Madelung-Konstante
Madelung constant
Constante de Madelung
ثابت مادلونگ
Costante di Madelung
マーデルングエネルギー
Stała Madelunga
constante de Madelung
постоянная Маделунга
馬德隆常數
"Madelung Constant" is used in determining the electrostatic potential of a single ion in a crystal by approximating the ions by point charges. It is named after Erwin Madelung, a German physicist.
For a uni-univalent ionic crystal of specified structure, the binding energy $V_b$ per pair of ions is $V_b = \alpha\frac{e^2}{4\pi \varepsilon_0 a}$, where $e$ is the elementary charge, $\varepsilon_0$ is the electric constant, and $a$ is the lattice constant which should be specified.
Applicable units are those of quantitykind:MadelungConstant
Magnetic Susceptability
"Magnetic Susceptability" is a scalar or tensor quantity the product of which by the magnetic constant $\mu_0$ and by the magnetic field strength $H$ is equal to the magnetic polarization $J$. The definition given applies to an isotropic medium. For an anisotropic medium permeability is a second order tensor.
$\kappa = \frac{M}{H}$, where $M$ is magnetization, and $H$ is magnetic field strength.
Applicable units are those of quantitykind:MagneticSusceptability
Mass Absorption Coefficient
The mass absorption coefficient is the linear absorption coefficient divided by the density of the absorber.
$a_m = \frac{a}{\rho}$, where $a$ is the linear absorption coefficient and $\rho$ is the mass density of the medium.
Applicable units are those of quantitykind:MassAbsorptionCoefficient
Mass Amount of Substance Temperature
Applicable units are those of quantitykind:MassAmountOfSubstanceTemperature
Mass Concentration of Water
"Mass Concentration of Water" is one of a number of $\textit{Concentration}$ quantities defined by ISO 80000.
$w = m/V$, where $m$ is mass of water, irrespective of the form of aggregation, and $V$ is volume. Mass concentration of water at saturation is denoted $w_{sat}$.
Mass Concentration of Water is one of a number of Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassConcentrationOfWater
Mass Concentration of Water Vapour
"Mass Concentration of Water Vapour" is one of a number of $\textit{Concentration}$ quantities defined by ISO 80000.
$w = m/V$, where $m$ is mass of water vapour and $V$ is total gas volume. Mass concentration of water vapour at saturation is denoted $v_{sat}$.
Applicable units are those of quantitykind:MassConcentrationOfWaterVapour
Mass Concentration Rate Of Change
the rate at which a specific chemical element or compound changes concentration over time, where with concentration expressed as mass per volume. SI unit is kg * m-3 * s-1
Applicable units are those of quantitykind:MassConcentrationRateOfChange
Mass Defect
The "Mass Defect", also termed mass deficit, or mass packing fraction, describes mass change (decrease) in bound systems, particularly atomic nuclei.
$B = Zm(^{1}\textrm{H}) + Nm_n - m_a$, where $Z$ is the proton number of the atom, $m(^{1}\textrm{H})$ is atomic mass of $^{1}\textrm{H}$, $N$ is the neutron number, $m_n$ is the rest mass of the neutron, and $m_a$ is the rest mass of the atom.
Mass Energy Transfer Coefficient
"Mass Energy Transfer Coefficient" is that fraction of the mass attenuation coefficient which contributes to the production of kinetic energy in charged particles.
$\frac{\mu_{tr}}{\rho} = -\frac{1}{\rho}\frac{1}{R}\frac{dR_{tr}}{dl}$, where $dR_{tr}$ is the mean energy that is transferred to kinetic energy of charged particles by interactions of the incident radiation $R$ in traversing a distance $dl$ in the material of density $\rho$.
Applicable units are those of quantitykind:MassEnergyTransferCoefficient
Mass Fraction
The "Mass Fraction" is the fraction of one substance with mass to the mass of the total mixture .
$w_B = \frac{m_B}{m}$, where $m_B$ is the mass of substance $B$ and $m$ is the total.
Applicable units are those of quantitykind:MassFraction
Mass Number
The "Mass Number" (A), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. Nuclides with the same value of $A$ are called isobars.
$A = Z + N$, where $Z$ is the atomic number and $N$ is the neutron number.
Applicable units are those of quantitykind:MassNumber
Mass per Electric Charge
The mass-to-charge ratio ratio ($m/Q$) is a physical quantity that is widely used in the electrodynamics of charged particles, for example, in electron optics and ion optics. The importance of the mass-to-charge ratio, according to classical electrodynamics, is that two particles with the same mass-to-charge ratio move in the same path in a vacuum when subjected to the same electric and magnetic fields. Its SI units are $kg/C$, but it can also be measured in Thomson ($Th$).
Applicable units are those of quantitykind:MassPerElectricCharge
Mass Concentration of Water To Dry Matter
"Mass Ratio of Water to Dry Matter" is one of a number of $\textit{Concentration Ratio}$ quantities defined by ISO 80000.
$u = m/m_d$, where $m$ is mass of water vapour and $m_d$ is mass of dry matter. Mass ratio of water to dry matter at saturation is denoted $u_{sat}$.
Mass Ratio of Water to Dry Matter is one of a number of Concentration Ratio quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassRatioOfWaterToDryMatter
Mass Ratio of Water Vapour to Dry Gas
"Mass Ratio of Water Vapour to Dry Gas" is one of a number of $\textit{Concentration Ratio}$ quantities defined by ISO 80000.
$x = m/m_d$, where $m$ is mass of water vapour and $m_d$ is mass of dry gas. Mass ratio of water vapour to dry gas at saturation is denoted $x_{sat}$.
Mass Ratio of Water Vapour to Dry Gas is one of a number of Concentration Ratio quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassRatioOfWaterVapourToDryGas
Applicable units are those of quantitykind:MassStoppingPower
Applicable units are those of quantitykind:MassicElectricCurrent
Max Operating Thrust
Mechanical Mobility
Applicable units are those of quantitykind:MechanicalMobility
Mobility Ratio
"MobilityRatio" describes permeability of a porous material to a given phase divided by the viscosity of that phase.
$b = \frac{\mu_n}{\mu_p}$, where $\mu_n$ and $\mu_p$ are mobilities for electrons and holes, respectively.
Applicable units are those of quantitykind:MobilityRatio
Modulus Of Impedance
"Modulus Of Impedance} is the absolute value of the quantity $\textit{impedance}$. Apparent impedance is defined more generally as the quotient of rms voltage and rms electric current; it is often denoted by $Z$.
$Z = \left | \underline{Z} \right |$, where $\underline{Z}$ is impedance.
Applicable units are those of quantitykind:ModulusOfImpedance
Modulus of Subgrade Reaction
Modulus of Subgrade Reaction is a geotechnical measure describing interaction between foundation structures and the soil. May also be known as bedding measure. Usually measured in N/m3.
Applicable units are those of quantitykind:ModulusOfSubgradeReaction
Molar Angular Momentum
Applicable units are those of quantitykind:MolarAngularMomentum
Molar Conductivity
"Molar Conductivity" is the conductivity of an electrolyte solution divided by the molar concentration of the electrolyte, and so measures the efficiency with which a given electrolyte conducts electricity in solution.
$\Gamma_m = \frac{x}{c_B}$, where $x$ is the electrolytic conductivity and $c_B$ is the amount-of-substance concentration.
Applicable units are those of quantitykind:MolarConductivity
Molar Entropy
The "Standard Molar Entropy" is the entropy content of one mole of substance, under standard conditions (not standard temperature and pressure STP).
$S_m = \frac{S}{n}$, where $S$ is entropy and $n$ is amount of substance.
Applicable units are those of quantitykind:MolarEntropy
Molar Flux Density Variance, NEON
Variance for NEON Molar Flux Denisity data measured in unit:MicroMOL-PER-M2-SEC
Applicable units are those of quantitykind:MolarFluxDensityVariance_NEON
Molar Optical Rotatory Power
The "Molar Optical Rotatory Power" Angle of optical rotation divided by the optical path length through the medium and by the amount concentration giving the molar optical rotatory power.
$\alpha_n = \alpha \frac{A}{n}$, where $\alpha$ is the angle of optical rotation, and $n$ is the amount of substance of the optically active component in the path of a linearly polarized light beam of cross sectional area $A$.
Applicable units are those of quantitykind:MolarOpticalRotatoryPower
Molecular Viscosity
Molecules in a fluid close to a solid boundary sometime strike the boundary and transfer momentum to it. Molecules further from the boundary collide with molecules that have struck the boundary, further transferring the change in momentum into the interior of the fluid. This transfer of momentum is molecular viscosity. Molecules, however, travel only micrometers between collisions, and the process is very inefficient for transferring momentum even a few centimeters. Molecular viscosity is important only within a few millimeters of a boundary. The coefficient of molecular viscosity has the same value as the dynamic viscosity.
Momentum per Angle
Applicable units are those of quantitykind:MomentumPerAngle
Morbidity Rate
Morbidity rate is a measure of the incidence of a disease in a particular population, scaled to the size of that population, per unit of time.
Applicable units are those of quantitykind:MorbidityRate
Mutual Inductance
$\textit{Mutual Inductance}$ is the non-diagonal term of the inductance matrix. For two loops, the symbol $M$ is used for $L_{12}$.
$L_{mn} = \frac{\Psi_m}{I_n}$, where $I_n$ is an electric current in a thin conducting loop $n$ and $\Psi_m$ is the linked flux caused by that electric current in another loop $m$.
Applicable units are those of quantitykind:Inductance
Napierian Absorbance
Napierian Absorbance is the natural (Napierian) logarithm of the reciprocal of the spectral internal transmittance.
$A_e(\lambda) = -ln(\tau(\lambda))$, where $\tau$ is the transmittance at a given wavelength $\lambda$.
Applicable units are those of quantitykind:NapierianAbsorbance
$D_n = -\frac{J_x}{\frac{\partial dn}{\partial dx}}$, where $J_x$ is the $x-component$ of the particle current and $n$ is the particle number density.
Applicable units are those of quantitykind:NeutronDiffusionCoefficient
عدد النيوترونات
Neutronové číslo
Neutronenzahl
neutron number
número neutrónico
عدد نوترون
Nombre de neutrons
numero neutronico
Nombor neutron
liczba neutronowa
número de neutrons
число нейтронов
nötron snumarası
中子數
"Neutron Number", symbol $N$, is the number of neutrons in a nuclide. Nuclides with the same value of $N$ but different values of $Z$ are called isotones. $N - Z$ is called the neutron excess number.
Applicable units are those of quantitykind:NeutronNumber
Neutron Yield per Absorption
The "Neutron Yield per Absorption" is the average number of fission neutrons, both prompt and delayed, emitted per neutron absorbed in a fissionable nuclide or in a nuclear fuel, as specified.
Applicable units are those of quantitykind:NeutronYieldPerAbsorption
Neutron Yield per Fission
The "Neutron Yield per Fission" is the average number of fission neutrons, both prompt and delayed, emitted per fission event.
Applicable units are those of quantitykind:NeutronYieldPerFission
Non-Leakage Probability
The "Non-Leakage Probability" is the probability that a neutron will not escape from the reactor during the slowing-down process or while it diffuses as a thermal neutron
Applicable units are those of quantitykind:Non-LeakageProbability
"NonNegativeLength" is a measure of length greater than or equal to zero.
Nozzle Throat Diameter
Spin Quantum Number
The "Spin Quantum Number" describes the spin (intrinsic angular momentum) of the electron within that orbital, and gives the projection of the spin angular momentum S along the specified axis
$I^2 = \hbar^2 I(I + 1)$, where $\hbar$ is the Planck constant.
Applicable units are those of quantitykind:NuclearSpinQuantumNumber
عدد كتلي
Nukleové číslo
Nukleonenzahl
nucleon number
número másico
عدد جرمی
nombre de masse
numero di massa
質量数
Nombor nukleon
liczba masowa
número de massa
nükleon numarası
质量数
Number of nucleons in an atomic nucleus.A = Z+N. Nuclides with the same value of A are called isobars.
Applicable units are those of quantitykind:NucleonNumber
Massenzahl
mass number
numero di nucleoni
nombor jisim
kütle numarası
Number of Particles
"Number of Particles", also known as the particle number, of a thermodynamic system, conventionally indicated with the letter N, is the number of constituent particles in that system.
Applicable units are those of quantitykind:NumberOfParticles
Order of Reflection
"Order of Reflection" is $n$ in the Bragg's Law equation.
Applicable units are those of quantitykind:OrderOfReflection
Osmotic Coefficient
The "Osmotic Coefficient" is a quantity which characterises the deviation of a solvent from ideal behavior.
Applicable units are those of quantitykind:OsmoticCoefficient
Packing Fraction
The "Packing Fraction" is the fraction of volume in a crystal structure that is occupied by atoms.
$f = \frac{\Delta_r}{A}$, where $\Delta_r$ is the relative mass excess and $A$ is the nucleon number.
Applicable units are those of quantitykind:PackingFraction
Particle Source Density
"Particle Source Density" is the rate of production of particles in a 3D domain divided by the volume of that element.
Applicable units are those of quantitykind:ParticleSourceDensity
Permeability Ratio
The ratio of the effective permeability of a porous phase to the absolute permeability.
Applicable units are those of quantitykind:PermeabilityRatio
Permeance
"Permeance" is the inverse of reluctance. Permeance is a measure of the quantity of flux for a number of current-turns in magnetic circuit. A magnetic circuit almost acts as though the flux is "conducted", therefore permeance is larger for large cross sections of a material and smaller for longer lengths. This concept is analogous to electrical conductance in the electric circuit.
$\Lambda = \frac{1}{R_m}$, where $R_m$ is reluctance.
Applicable units are those of quantitykind:Permeance
Permittivity Ratio
"Permittivity Ratio" is the ratio of permittivity to the permittivity of a vacuum.
$\epsilon_r = \epsilon / \epsilon_0$, where $\epsilon$ is permittivity and $\epsilon_0$ is the electric constant.
Applicable units are those of quantitykind:PermittivityRatio
Photon Intensity
A measure of flux of photons per solid angle
Applicable units are those of quantitykind:PhotonIntensity
Photon Radiance
A measure of flux of photons per surface area per solid angle
Applicable units are those of quantitykind:PhotonRadiance
Photosynthetic Photon Flux
Photosynthetic Photon Flux (PPF) is a measurement of the total number of photons emitted by a light source each second within the PAR wavelength range and is measured in μmol/s. Lighting manufacturers may specify their grow light products in terms of PPF. It can be considered as analogous to measuring the luminous flux (lumens) of visible light which would typically require the use of an integrating sphere or a goniometer system with spectroradiometer sensor.
Applicable units are those of quantitykind:PhotosyntheticPhotonFlux
picture element
smallest element of a display space (cell size) of a digitized two-dimensional field representation of an image which has an address (x and y coordinates corresponding to its position in the field) and a specific brightness value
kleinstes Element einer Darstellungsfläche (Zellgröße) einer digitalisierten zweidimensionalen Felddarstellung eines Bildes, die eine Adresse (x- und y-Koordinaten entsprechend seiner Position im Feld) und einen spezifischen Helligkeitswert besitzt
Applicable units are those of quantitykind:PictureElement
Poisson Ratio
The Poisson Ratio is the negative ratio of transverse to axial strain. In fact, when a sample object is stretched (or squeezed), to an extension (or contraction) in the direction of the applied load, it corresponds a contraction (or extension) in a direction perpendicular to the applied load. The ratio between these two quantities is the Poisson's ratio.
$\mu = \frac{\Delta \delta}{\Delta l}$, where $\Delta \delta$ is the lateral contraction and $\Delta l$ is the elongation.
Applicable units are those of quantitykind:PoissonRatio
Population
Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world, but can also represent the number of any kind of entity.
Applicable units are those of quantitykind:Population
Position Vector
A "Position Vector", also known as location vector or radius vector, is a Euclidean vector which represents the position of a point P in space in relation to an arbitrary reference origin O.
$r = \overrightarrow{OP}$, where $O$ and $P$ are two points in space.
Power Area
Applicable units are those of quantitykind:PowerArea
Power Area per Solid Angle
Applicable units are those of quantitykind:PowerAreaPerSolidAngle
Power per Area Angle
Power per area quartic temperature
Applicable units are those of quantitykind:PowerPerAreaQuarticTemperature
Pressure Loss per Length
"Pressure Loss per Length" refers to the power lost in overcoming the friction between two moving surfaces. Also referred to as "Friction Loss".
Applicable units are those of quantitykind:PressureLossPerLength
Prevalence
In epidemiology, prevalence is the proportion of a particular population found to be affected by a medical condition (typically a disease or a risk factor such as smoking or seatbelt use) at a specific time. (Wikipedia)
Applicable units are those of quantitykind:Prevalence
Propellant Burn Rate
Applicable units are those of quantitykind:PropellantBurnRate
Propellant Mass
Propellant Temperature
Radiance Factor
Radiance Factor is the ratio of the radiance of the surface element in the given direction to that of a perfect reflecting or transmitting diffuser identically irradiated unit.
$\beta = \frac{L_n}{L_d}$, where $L_n$ is the radiance of a surface element in a given direction and $L_d$ is the radiance of the perfect reflecting or transmitting diffuser identically irradiated and viewed. Reflectance factor is equivalent to radiance factor or luminance factor (when the cone angle is infinitely small, and is equivalent to reflectance when the cone angle is $2π sr$.
Applicable units are those of quantitykind:RadianceFactor
طاقة إشعاعية
energie záření
Strahlungsenergie
radiant energy
energía radiante
انرژی تابشی
énergie rayonnante
विकिरण ऊर्जा
energia radiante
放射エネルギー
Tenaga sinaran
energia promienista
энергия излучения
Işınım erkesi
辐射能
In radiometry, $\textit{Radiant Energy}$ is the energy of electromagnetic waves. The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time. In nuclear physics, $\textit{Radiant Energy}$ is energy, excluding rest energy, of the particles that are emitted, transferred, or received.
In radiometry,"Radiant Energy} is the energy of electromagnetic waves. The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time. In nuclear physics, $\textit{Radiant Energy" is energy, excluding rest energy, of the particles that are emitted, transferred, or received.
Radiant Energy Density
"Radiant Energy Density", or radiant power, is the radiant energy per unit volume.
$w$, $\rho = \frac{dQ}{dV}$, where $dQ$ is the radiant energy in an elementary three-dimensional domain, and $dV$ is the volume.
Applicable units are those of quantitykind:RadiantEnergyDensity
Radiant Intensity
Radiant Intensity is a measure of the intensity of electromagnetic radiation. It is defined as power per unit solid angle.
$I = \frac{d\Phi}{d\Omega}$, where $d\Phi$ is the radiant flux leaving the source in an elementary cone containing the given direction with the solid angle $d\Omega$.
Applicable units are those of quantitykind:RadiantIntensity
Radiosity
Radiosity is the total emitted and reflected radiation leaving a surface.
Applicable units are those of quantitykind:Radiosity
Applicable units are those of quantitykind:Ratio
Ratio of Specific Heat Capacities
The specific heat ratio of a gas is the ratio of the specific heat at constant pressure, $c_p$, to the specific heat at constant volume, $c_V$. It is sometimes referred to as the $\textit{adiabatic index}$, or the $\textit{heat capacity ratio}$, or the $\textit{isentropic expansion factor}$, or the $\textit{adiabatic exponent}$, or the $\textit{isentropic exponent}$.
$\gamma = c_p / c_V$, where $c$ is the specific heat of a gas, $c_p$ is specific heat capacity at constant pressure, $c_V$ is specific heat capacity at constant volume.
Applicable units are those of quantitykind:RatioOfSpecificHeatCapacities
Reactivity
"Reactivity" characterizes the deflection of reactor from the critical state.
$\rho = \frac{k_{eff} - 1}{k_{eff}}$, where $k_{eff}$ is the effective multiplication factor.
Applicable units are those of quantitykind:Reactivity
reciprocal voltage
quantity whose value is inversely proportional to the voltage value
Größe, deren Wert sich umgekehrt proportional zum Spannungswert verhält
Applicable units are those of quantitykind:ReciprocalVoltage
Recombination Coefficient
The "Recombination Coefficient" is the rate of recombination of positive ions with electrons or negative ions in a gas, per unit volume, divided by the product of the number of positive ions per unit volume and the number of electrons or negative ions per unit volume.
$-\frac{dn^+}{dt} = -\frac{dn^-}{dt} = an^+n^-$, where $n^+$ and $n^-$ are the ion number densities of positive and negative ions, respectively, recombined during an infinitesimal time interval with duration $dt$.
Applicable units are those of quantitykind:RecombinationCoefficient
Reflectance Factor
Reflectance Factor is the measure of the ability of a surface to reflect light or other electromagnetic radiation, equal to the ratio of the reflected flux to the incident flux.
$R = \frac{\Phi_n}{\Phi_d}$, where $\Phi_n$ is the radiant flux or luminous flux reflected in the directions delimited by a given cone and $\Phi_d$ is the flux reflected in the same directions by an identically radiated diffuser of reflectance equal to 1.
Applicable units are those of quantitykind:ReflectanceFactor
معامل الانكسار
Index lomu
Brechzahl
refractive index
índice de refracción
ضریب شکست
indice de réfraction
अपवर्तनांक
indice di rifrazione
屈折率
Indeks biasan
Współczynnik załamania
índice refrativo
Indice de refracție
Показатель преломления
kırılma indeksi
折射率
"refractive index" or index of refraction n of a substance (optical medium) is a dimensionless number that describes how light, or any other radiation, propagates through that medium.
$n = \frac{c_0}{c}$, where $c_0$ is the speed of light in vacuum, and $c$ is the speed of light in the medium.
Applicable units are those of quantitykind:RefractiveIndex
Brechungsindex
Relative Mass Concentration of Vapour
"Relative Mass Concentration of Vapour" is one of a number of "Relative Concentration" quantities defined by ISO 80000.
$\varphi = v / v_{sat}$, where $v$ is mass concentration of water vapour, $v_{sat}$ is its mass concentration of water vapour at saturation (at the same temperature). For normal cases, the relative partial pressure may be assumed to be equal to relative mass concentration of vapour.
Relative Mass Concentration of Vapour is one of a number of Relative Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:RelativeMassConcentrationOfVapour
Relative Mass Density
Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material.
$d = \frac{\rho}{\rho_0}$, where $\rho$ is mass density of a substance and $\rho_0$ is the mass density of a reference substance under conditions that should be specified for both substances.
Applicable units are those of quantitykind:RelativeMassDensity
Relative Mass Excess
The "Relative Mass Excess" is the mass excess between the monoisotopic mass of an element and the mass of its A + 1 or its A + 2 isotopic cluster (extrapolated from relative mass defect).
$\Delta_r = \frac{\Delta}{m_u}$, where $\Delta$ is the mass excess and $m_u$ is the unified atomic mass constant.
Applicable units are those of quantitykind:RelativeMassExcess
Relative Mass Ratio of Vapour
"Relative Mass Ratio of Vapour" is one of a number of "Relative Concentration" quantities defined by ISO 80000.
$\psi = x / x_{sat}$, where $x$ is mass ratio of water vapour to dry gas, $x_{sat}$ is its mass raio of water vapour to dry gas at saturation (at the same temperature).
Relative Mass Ratio of Vapour is one of a number of Relative Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:RelativeMassRatioOfVapour
Resistance Ratio
Applicable units are those of quantitykind:ResistanceRatio
Resonance Escape Probability
The "Resonance Escape Probability" is the fraction of fission neutrons that manage to slow down from fission to thermal energies without being absorbed. In an infinite medium, the probability that a neutron slowing down will traverse all or some specified portion of the range of resonance energies without being absorbed.
Applicable units are those of quantitykind:ResonanceEscapeProbability
Respiratory Rate
Respiratory rate (Vf, Rf or RR) is also known by respiration rate, pulmonary ventilation rate, ventilation rate, or breathing frequency is the number of breaths taken within a set amount of time, typically 60 seconds. A normal respiratory rate is termed eupnea, an increased respiratory rate is termed tachypnea and a lower than normal respiratory rate is termed bradypnea.
Applicable units are those of quantitykind:RespiratoryRate
Reynolds Number
The "Reynolds Number" (Re) is a dimensionless number that gives a measure of the ratio of inertial forces to viscous forces and consequently quantifies the relative importance of these two types of forces for given flow conditions.
$Re = \frac{\rho uL}{\mu} = \frac{uL}{\nu}$, where $\rho$ is mass density, $u$ is speed, $L$ is length, $\mu$ is dynamic viscosity, and $\nu$ is kinematic viscosity.
Applicable units are those of quantitykind:ReynoldsNumber
Richardson Constant
"Richardson Constant" is a constant used in developing thermionic emission current density for a metal.
The thermionic emission current, $J$, for a metal is $J = AT^2\exp{(-\frac{\Phi}{kT})}$, where $T$ is thermodynamic temperature, $k$ is the Boltzmann constant, and $\Phi$ is a work function.
Applicable units are those of quantitykind:RichardsonConstant
Scalar Magnetic Potential
"Scalar Magnetic Potential" is the scalar potential of an irrotational magnetic field strength. The negative of the gradient of the scalar magnetic potential is the irrotational magnetic field strength. The magnetic scalar potential is not unique since any constant scalar field can be added to it without changing its gradient.
$\mathbf{H} = -grad V_m$, where $\mathbf{H}$ is magnetic field strength.
Applicable units are those of quantitykind:ScalarMagneticPotential
Section Area Integral
The sectional area integral measure is typically used in torsional analysis. It is usually measured in M⁵.
Applicable units are those of quantitykind:SectionAreaIntegral
Seebeck Coefficient
"Seebeck Coefficient", or thermopower, or thermoelectric power of a material is a measure of the magnitude of an induced thermoelectric voltage in response to a temperature difference across that material.
$S_{ab} = \frac{dE_{ab}}{dT}$, where $E_{ab}$ is the thermosource voltage between substances a and b, $T$ is the thermodynamic temperature of the hot junction.
Applicable units are those of quantitykind:SeebeckCoefficient
Short-Range Order Parameter
"Short-Range Order Parameter" is the fraction of the nearest-neighbor atom pairs in an Ising ferromagnet having magnetic moments in one direction, minus the fraction having magnetic moments in the opposite direction.
Applicable units are those of quantitykind:Short-RangeOrderParameter
Signal Detection Threshold
Applicable units are those of quantitykind:SignalDetectionThreshold
Signal Strength
In telecommunications, particularly in radio, signal strength refers to the magnitude of the electric field at a reference point that is a significant distance from the transmitting antenna. It may also be referred to as received signal level or field strength. Typically, it is expressed in voltage per length or signal power received by a reference antenna. High-powered transmissions, such as those used in broadcasting, are expressed in dB-millivolts per metre (dBmV/m).
Sound exposure
Sound Exposure is the energy of the A-weighted sound calculated over the measurement time(s). For a given period of time, an increase of 10 dB(A) in sound pressure level corresponds to a tenfold increase in E.
$E = \int_{t1}^{t2}p^2dt$, where $t1$ and $t2$ are the starting and ending times for the integral and $p$ is the sound pressure.
Applicable units are those of quantitykind:SoundExposure
Sound intensity
$I = pv$, where $p$ is the sound pressure and $v$ is sound particle velocity.
Sound pressure
Sound Pressure is the difference between instantaneous total pressure and static pressure.
Sound volume velocity
Sound Volume Velocity is the product of particle velocity $v$ and the surface area $S$ through which an acoustic wave of frequency $f$ propagates. Also, the surface integral of the normal component of the sound particle velocity over the cross-section (through which the sound propagates). It is used to calculate acoustic impedance.
$q= vS$, where $v$ is sound particle velocity and $S$ is the surface area through which an acoustic wave of frequence $f$ propagates.
Applicable units are those of quantitykind:SoundVolumeVelocity
Specific Electric Charge
Electric charge (often capacity in the context of electrochemical cells) relativ to the mass (often only active components). capacity
Applicable units are those of quantitykind:SpecificElectricCharge
Specific Electrical Current
"Specific Electric Current" is a measure to specify the applied current relative to a corresponding mass. This measure is often used for standardization within electrochemistry.
Applicable units are those of quantitykind:SpecificElectricCurrent
Specific Heat Pressure
Applicable units are those of quantitykind:SpecificHeatPressure
Specific Heat Volume
Applicable units are those of quantitykind:SpecificHeatVolume
Specific Optical Rotatory Power
The "Specific Optical Rotatory Power" Angle of optical rotation divided by the optical path length through the medium and by the mass concentration of the substance giving the specific optical rotatory power.
$\alpha_m = \alpha \frac{A}{m}$, where $\alpha$ is the angle of optical rotation, and $m$ is the mass of the optically active component in the path of a linearly polarized light beam of cross sectional area $A$.
Applicable units are those of quantitykind:SpecificOpticalRotatoryPower
Applicable units are those of quantitykind:SpectralDensityOfVibrationalModes
Standard Absolute Activity
The "Standard Absolute Activity" is proportional to the absoulte activity of the pure substance $B$ at the same temperature and pressure multiplied by the standard pressure.
$\lambda_B^\Theta = \lambda_B^*(p^\Theta)$, where $\lambda_B^\Theta$ the absolute activity of the pure substance $B$ at the same temperature and pressure, and $p^\Theta$ is standard pressure.
Applicable units are those of quantitykind:StandardAbsoluteActivity
Statistical Weight
A "Statistical Weight" is the relative probability (possibly unnormalized) of a particular feature of a state.
Applicable units are those of quantitykind:StatisticalWeight
Stochastic Process
In probability theory, a stochastic process, or sometimes random process is a collection of random variables; this is often used to represent the evolution of some random value, or system, over time. This is the probabilistic counterpart to a deterministic process (or deterministic system).
Stoichiometric Number
Chemical reactions, as macroscopic unit operations, consist of simply a very large number of elementary reactions, where a single molecule reacts with another molecule. As the reacting molecules (or moieties) consist of a definite set of atoms in an integer ratio, the ratio between reactants in a complete reaction is also in integer ratio. A reaction may consume more than one molecule, and the "Stoichiometric Number" counts this number, defined as positive for products (added) and negative for reactants (removed).
Applicable units are those of quantitykind:StoichiometricNumber
Structure Factor
"Structure Factor" is a mathematical description of how a material scatters incident radiation.
$F(h, k, l) = \sum_{n=1}^N f_n\exp{[2\pi i(hx_n + ky_n +lz_n)]}$, where $f_n$ is the atomic scattering factor for atom $n$, and $x_n$, $y_n$, and $z_n$ are fractional coordinates in the unit cell; for $h$, $k$, and $l$.
Applicable units are those of quantitykind:StructureFactor
Applicable units are those of quantitykind:SunProtectionFactorOfAProduct
Surface Activity Density
The "Surface Activity Density" is undefined.
$a_s = \frac{A}{S}$, where $S$ is the total area of the surface of a sample and $A$ is its activity.
Applicable units are those of quantitykind:SurfaceActivityDensity
surface-related volume flow
quotient of the volume of a material, which passes through a specified surface, and the therefor required time divided by this specified area
Quotient aus dem Volumen eines Stoffes, das durch eine vorgegebene Oberfläche hindurchgeht, und der dazu benötigten Zeit dividiert durch diese vorgegebene Fläche
Applicable units are those of quantitykind:SurfaceRelatedVolumeFlow
Systolic Blood Pressure
Temperature per Magnetic Flux Density
Applicable units are those of quantitykind:TemperaturePerMagneticFluxDensity
Temperature Variance, NEON
Variance for NEON temperature data measured in degrees celcius
Applicable units are those of quantitykind:TemperatureVariance_NEON
Temporal Summation Function
"Temporal Summation Function" is the ability of the human eye to produce a composite signal from the signals coming into an eye during a short time interval.
Applicable units are those of quantitykind:TemporalSummationFunction
Thermal Diffusion Factor
Thermal diffusion is a phenomenon in which a temperature gradient in a mixture of fluids gives rise to a flow of one constituent relative to the mixture as a whole. in the context of the equation that describes thermal diffusion, the "Thermal Diffusion Factor" is .
$\alpha_T = \frac{k_T}{(x_A x_B)}$, where $k_T$ is the thermal diffusion ratio, and $x_A$ and $x_B$ are the local amount-of-substance fractions of the two substances $A$ and $B$.
Applicable units are those of quantitykind:ThermalDiffusionFactor
Thermal Diffusion Ratio
The "Thermal Diffusion Ratio" is proportional to the product of the component concentrations.
In a steady state of a binary mixture in which thermal diffusion occurs, $grad x_B = -(\frac{k_T}{T}) grad T$, where $x_B$ is the amount-of-substance fraction of the heavier substance $B$, and $T$ is the local thermodynamic temperature.
Applicable units are those of quantitykind:ThermalDiffusionRatio
Thermal Diffusion Coefficient
The "Thermal Diffusion Coefficient" is .
$D_T = kT \cdot D$, where $k_T$ is the thermal diffusion ratio, and $D$ is the diffusion coefficient.
Applicable units are those of quantitykind:ThermalDiffusionRatioCoefficient
Thermal Utilization Factor
The "Thermal Utilization Factor" in an infinite medium, is the ratio of the number of thermal absorbed in a fissionable nuclide or in a nuclear fuel, as specified, to the total number of thermal neutrons absorbed.
Applicable units are those of quantitykind:ThermalUtilizationFactor
Thomson Coefficient
"Thomson Coefficient" represents Thomson heat power developed, divided by the electric current and the temperature difference.
Applicable units are those of quantitykind:ThomsonCoefficient
Total Angular Momentum Quantum Number
The "Total Angular Quantum Number" describes the magnitude of total angular momentum $J$, where $j$ refers to a specific particle and $J$ is used for the whole system.
Applicable units are those of quantitykind:TotalAngularMomentumQuantumNumber
Total Current Density
"Total Current Density" is the sum of the electric current density and the displacement current density.
$J_{tot}= J + J_D$, where $J$ is electric current density and $J_D$ is displacement current density.
Applicable units are those of quantitykind:TotalCurrentDensity
Total Ionization
"Total Ionization" by a particle, total mean charge, divided by the elementary charge, $e$, of all positive ions produced by an ionizing charged particle along its entire path and along the paths of any secondary charged particles.
Applicable units are those of quantitykind:TotalIonization
Transmittance Density
$A_{10}(\lambda) = -lg(\tau(\lambda))$, where $\tau$ is the transmittance at a given wavelength $\lambda$.
Applicable units are those of quantitykind:TransmittanceDensity
Turbidity
Turbidity is the cloudiness or haziness of a fluid, or of air, caused by individual particles (suspended solids) that are generally invisible to the naked eye, similar to smoke in air. Turbidity in open water is often caused by phytoplankton and the measurement of turbidity is a key test of water quality. The higher the turbidity, the higher the risk of the drinkers developing gastrointestinal diseases, especially for immune-compromised people, because contaminants like virus or bacteria can become attached to the suspended solid. The suspended solids interfere with water disinfection with chlorine because the particles act as shields for the virus and bacteria. Similarly suspended solids can protect bacteria from UV sterilisation of water. Fluids can contain suspended solid matter consisting of particles of many different sizes. While some suspended material will be large enough and heavy enough to settle rapidly to the bottom container if a liquid sample is left to stand (the settleable solids), very small particles will settle only very slowly or not at all if the sample is regularly agitated or the particles are colloidal. These small solid particles cause the liquid to appear turbid.
Applicable units are those of quantitykind:Turbidity
Turns
"Turns" is the number of turns in a winding.
Applicable units are those of quantitykind:Turns
unbalance
unsteady rotation of a body resulting from an anxious distribution of mass, expressed as the product of radius and related mass
durch ungleichmäßige Masseverteilung bedingter, unruhiger Lauf rotierender Körper, ausgedrückt als Produkt aus dem Radius und einer zugehörigen Masse
Applicable units are those of quantitykind:Unbalance
Upper Critical Magnetic Flux Density
"Upper Critical Magnetic Flux Density" for type II superconductors, is the threshold magnetic flux density for disappearance of bulk superconductivity.
Vacuum Thrust
Vapor Permeability
The moisture transmission rate of a material is referred to as its "permeability".
Applicable units are those of quantitykind:VaporPermeability
Ventilation Rate per Floor Area
Ventilation Rate is often expressed by the volumetric flowrate of outdoor air introduced to a building. However, ASHRAE now recommends ventilation rates dependent upon floor area.
Applicable units are those of quantitykind:VentilationRatePerFloorArea
Video Frame Rate
Frame rate (also known as frame frequency) is the frequency (rate) at which an imaging device produces unique consecutive images called frames. The term applies equally well to computer graphics, video cameras, film cameras, and motion capture systems. Frame rate is most often expressed in frames per second (FPS) and is also expressed in progressive scan monitors as hertz (Hz).
Applicable units are those of quantitykind:VideoFrameRate
Voltage Ratio
Applicable units are those of quantitykind:VoltageRatio
Applicable units are those of quantitykind:VolumeFlowRate_SurfaceRelated
Wasserdampfdiffusionsleitkoeffizient
Water vapour diffusion coefficient
The Water vapour diffusion coefficient describes how easy vapor diffusion happens in a given material.
Applicable units are those of quantitykind:WaterVaporDiffusionCoefficient
$\textit{Ampere Hour per Degree Celsius}$ is the product of the SI base unit ampere and the unit hour divided by the unit degree Celsius.
product of the SI base unit ampere and the unit minute
SI base unit ampere divided by the SI base unit ampere and the unit hour
Ampere per Square Centimetre
Ampere per Square Centimeter
SI base unit ampere divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Ampere per Degree Celsius
A measure used to express how a current is subject to temperature. Originally used in Wien's Law to describe phenomena related to filaments. One use today is to express how a current generator derates with temperature.
Ampere per Gram
$\textit{Ampere per gram}$ is a practical unit to describe an (applied) current relative to the involved amount of material. This unit is often found in electrochemistry to standardize test conditions and compare various scales of investigated materials.
Ampere per Joule
$\textit{Ampere per Joule}$ is the inverse measure of $joule-per-ampere$ or $weber$. The measure for the reciprical of magnetic flux.
SI base unit ampere divided by the SI base unit kelvin
SI base unit ampere divided by the SI base unit kilogram
Ampere per Square Metre Square Kelvin
Ampere per Square Meter Square Kelvin
Ampere per Square Millimetre
Ampere per Square Millimeter
SI base unit ampere divided by the 0.000 001-fold of the power of the SI base unit metre by exponent 2
SI base unit ampere divided by the SI derived unit pascal
Ampere per Radian
$\textit{Ampere per Radian}$ is a derived unit for measuring the amount of current per unit measure of angle, expressed in ampere per radian.
product out of the power of the SI base unit ampere and the SI base unit second with the exponent 2
product out of the power of the SI base unit ampere with the exponent 2 and the SI base unit second
Atmosphere Cubic Metre per Mole
Atmosphere Cubic Meter per Mole
The unit $\textit{Atmosphere Cubic Metre per Mole}$ consists of the power of the SI base unit metre with the exponent 3 multiplied by the unit atmosphere divided by the SI base unit mol.
An [outdated] unit of the pressure divided by the SI base unit metre
The unit $\textit{technical atmosphere per metre}$ is the pressure which is generated by a 10 metre water column divided by the SI base unit metre.
Abampere per Square Centimetre
Abampere per Square Centimeter
The unit $\textit{Abampere Per Square Centimeter}$, symbol $aA/cm^2$, is a unit in the category of Electric current density. It is also known as $\textit{abamperes per square centimeter}$, $\textit{abampere/square centimeter}$, and $\textit{abampere per square centimetre}$. This unit is commonly used in the cgs unit system. $\textit{Abampere Per Square Centimeter}$ has a dimension of $L^{-2}I$ where $L$ is length, and $I$ is electric current. It can be converted to the corresponding standard SI unit $A/m^{2}$ by multiplying its value by a factor of 100000.
Statampere per Square Centimetre
Statampere per Square Centimeter
The $\textit{Statampere per Square Centimeter}$ is a unit of electric current density in the c.g.s. system of units.
Attofarad
The $\textit{AttoFarad}$ is 0,000 000 000 000 000 001-fold of the SI derived unit $farad$.
0.000000000000000001-fold of the SI derived unit farad
Attojoule Second
The $\textit{AttoJoule Second}$ is the unit for the Planck's constant as product of the SI derived unit joule and the SI base unit second.
unit of the Planck's constant as product of the SI derived unit joule and the SI base unit second
The $\textit{Bel}$ is the unit $\textit{Bel}$ divided by the SI base unit metre/
Bar per Bar
pressure relation consisting of the unit bar divided by the unit bar
Bar per Kelvin
unit with the name bar divided by the SI base unit kelvin
unit for the representation of the cross section barn divided by the unit of the energy electronvolt which is used for the atomic physics, nuclear physics and particle physics
unit for the representation of the cross section barn divided by the unit of the solid angle steradian
unit for the representation of the cross section barn divided by the product of the unit of the solid angle steradian and the unit of the energy electronvolt which is used for the atomic physics, nuclear physics and particle physics
Dry Barrel (US)
non SI-conform unit of the volume in the USA which applies to a resolution from 1912: 1 dry barrel (US) equals approximately to 115.63 litre
Heart Beats per Minute
"Heart Beat per Minute" is a unit for 'Heart Rate' expressed as $BPM$.
unit bit divided by the SI base unit metre
unit bit divided by the power of the SI base unit metre with the exponent 2
unit bit divided by the power of the SI base unit metre with the exponent 3
Bit per Second
A bit per second (B/s) is a unit of data transfer rate equal to 1 bits per second.
Becquerels per litre
One radioactive disintegration per second from a one part in 10**3 of the SI unit of volume (cubic metre).
Becquerel per Square Metre
Becquerel per Square Meter
Becquerels second per cubic metre
TBD
Breath per Minute
BTU Foot
${\bf BTU_{IT} \, Foot}$ is an Imperial unit for $\textit{Thermal Energy Length}$ expressed as $Btu-ft$.
BTU (IT) Foot per Square Foot Hour Degree Fahrenheit
A $BTU_{IT}$, $\italic{Foot per Square Foot Hour Degree Fahrenheit}$ is an Imperial unit for 'Thermal Conductivity', expressed as $Btu_{it} \cdot ft/(h \cdot ft^2 \cdot degF)$.
British thermal unit (international table) foot per hour Square foot degree Fahrenheit is the unit of the thermal conductivity according to the Imperial system of units.
qudt:exactMatch: unit:BTU_IT-FT-PER-HR-FT2-DEG_F
BTU Inch
${\bf BTU \, Inch}$ is an Imperial unit for 'Thermal Energy Length' expressed as $Btu-in$.
BTU (IT) per Degree Fahrenheit
$\textit{British Thermal Unit (IT) Per Fahrenheit Degree}$ ($Btu (IT)/^\circ F$) is a measure of heat capacity. It can be converted to the corresponding standard SI unit $J/K$ by multiplying its value by a factor of $1899.10534$.
BTU per Degree Rankine
$\textit{BTU per Degree Rankine}$ is an Imperial unit for 'Heat Capacity' expressed as $Btu/degR$.
British Thermal Unit (international Table) per Pound of force Degree Fahrenheit
Unit of heat energy according to the Imperial system of units divided by the product of a pound of force and a degree Fahrenheit
British Thermal Unit (international Table) per Pound of force Degree Rankine
Unit of heat energy according to the Imperial system of units divided by the product of a pound of force and a degree Rankine
BTU per Pound Mole
${\bf BTU \, per \, Pound \,Mole}$ is an Imperial unit for 'Energy And Work Per Mass Amount Of Substance' expressed as $Btu/(lb-mol)$.
BTU per Pound Mole Degree Fahrenheit
${\bf BTU \, per \, Pound \, Mole \, Degree \, Fahrenheit}$ is an Imperial unit for 'Molar Heat Capacity' expressed as $Btu/(lb-mol-degF)$.
British Thermal Unit (international Table) per Second Foot Degree Rankine
unit of the thermal conductivity according to the Imperial system of units
BTU (TH) Foot per Square Foot Hour Degree Fahrenheit
The $\textit{BTU (TH) Foot per Square Foot Hour Degree Fahrenheit}$ is an Imperial unit for 'Thermal Conductivity' defined as: $$Btu_{th} \cdot ft/(h \cdot ft^2 \cdot degF)$$.
British Thermal Unit (thermochemical) Foot per Hour Square Foot degree Fahrenheit
The $\textit{British Thermal Unit (thermochemical) Foot Per Hour Square Foot degree Fahrenheit}$ is a unit of thermal conductivity in the Imperial system of units.
BTU (TH) Inch per Square Foot Hour Degree Fahrenheit
${\bf BTU_{th}}$, Inch per Square Foot Hour Degree Fahrenheit, is an Imperial unit for 'Thermal Conductivity' expressed as $Btu-in/(h-ft^{2}-degF)$. A thermochemical British thermal unit inch per second per square foot per degree Fahrenheit is a unit of thermal conductivity in the US Customary Units and British Imperial Units. $1 Btu_{th} \cdot in/(h \cdot ft^{2} \cdot degF)$ shows that one thermochemical BTU of heat per one hour moves through one square foot of material, which is one foot thick due to a temperature difference of one degree Fahrenheit.
$Btu_{th} \cdot in/(h \cdot ft^{2} \cdot degF)$
Unit of thermal conductivity according to the Imperial system of units
BTU (TH) Inch per Square Foot Second Degree Fahrenheit
The $\textit{BTU (TH) Inch per Square Foot Second Degree Fahrenheit}$ is an Imperial unit for 'Thermal Conductivity' expressed as: $$Btu_{th} \cdot in/(ft^{2} \cdot s \cdot degF)$$.
British thermal unit (thermochemical) per degree Fahrenheit
unit of the heat capacity according to the Imperial system of units
British thermal unit (thermochemical) per degree Rankine
British thermal unit (thermochemical) per pound degree Rankine
unit of the heat capacity (British Thermal Unit - thermochemical - according to the international table according to the Rankine degree) according to the Imperial system of units divided by the unit avoirdupois pound according to the avoirdupois system of units
Coulomb mal Quadratmeter
coulomb square metre
Coulomb Square Meter
کولن متر مربع
coulomb per metro quadrato
coulomb meter persegi
库仑平方米
Coulomb Square Meter (C-m2) is a unit in the category of Electric quadrupole moment. This unit is commonly used in the SI unit system. Coulomb Square Meter (C-m2) has a dimension of L2TI where $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
product of the SI derived unit coulomb and the power of the SI base unit metre with the exponent 2 divided by the SI base unit kilogram
Coulomb mal Quadratmeter je Volt
coulomb square metre per volt
Coulomb Square Meter per Volt
کولن متر مربع بر ولت
coulomb per metro quadrato al volt
库伦平方米每伏特
Coulomb Square Meter (C-m2-per-volt) is a unit in the category of Electric polarizability.
Coulomb per Cubic Centimetre
Coulomb per Cubic Centimeter
derived SI unit coulomb divided by the 0.000 001-fold of the power of the SI base unit metre by exponent 3
Coulomb per Kilogram Second
Coulomb per Mole
($C/mol$) is a unit in the category of Molar electric charge. It is also known as $coulombs/mol$. Coulomb Per Mol has a dimension of $TN{-1}I$ where $T$ is time, $N$ is amount of substance, and $I$ is electric current. This unit is the standard SI unit in this category.
Coulomb per Cubic Millimetre
Coulomb per Cubic Millimeter
derived SI unit coulomb divided by the 0.000 000 001-fold of the power of the SI base unit metre by exponent 3
Square Coulomb Square Metre per Joule
Square Coulomb Square Meter per Joule
"Square Coulomb Square Meter per Joule" is a unit for 'Polarizability' expressed as $C^{2} m^{2} J^{-1}$.
Cubic Coulomb Metre per Square Joule
Cubic Coulomb Meter per Square Joule
"Cubic Coulomb Meter per Square Joule" is a unit for 'Cubic Electric Dipole Moment Per Square Energy' expressed as $C^{3} m^{3} J^{-2}$.
Quartic Coulomb Metre per Cubic Energy
Quartic Coulomb Meter per Cubic Energy
"Quartic Coulomb Meter per Cubic Energy" is a unit for 'Quartic Electric Dipole Moment Per Cubic Energy' expressed as $C^{4} m^{4} J^{-3}$.
Calorie (international Table) per Second Centimetre Kelvin
Calorie (international Table) per Second Centimeter Kelvin
Calorie (thermochemical) per Centimetre Second Degree Celsius
Calorie (thermochemical) per Centimeter Second Degree Celsius
Thermochemical Calorie per Cubic Centimetre Kelvin
Thermochemical Calorie per Cubic Centimeter Kelvin
$\textit{Thermochemical Calorie per Cubic Centimeter Kelvin}$ is a unit for 'Volumetric Heat Capacity' expressed as $cal_th/(cm^{3} K)$.
Thermochemical Calorie per Cubic Centimeter Kelvin is a unit for Volumetric Heat Capacity expressed as cal{th}/(cm³·K).
Calorie (thermochemical) per Second Centimetre Kelvin
Calorie (thermochemical) per Second Centimeter Kelvin
Cases per 1000 individuals year
The typical expression of morbidity rate, expressed as cases per 1000 individuals, per year.
United Arab Emirates dirham
Afghani
Lek
Armenian Dram
Netherlands Antillian Guilder
Kwanza
Argentine Peso
Australian Dollar
Azerbaijanian Manat
Convertible Marks
Barbados Dollar
Bangladeshi Taka
Bulgarian Lev
Bahraini Dinar
Burundian Franc
Bermuda Dollar
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Bolivian Mvdol (Funds code)
Brazilian Real
Bahamian Dollar
Ngultrum
Pula
Belarussian Ruble
Belize Dollar
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Franc Congolais
WIR Euro (complementary currency)
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WIR Franc (complementary currency)
Unidades de formento (Funds code)
Chilean Peso
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Ethiopian Birr
Euro per kilowatt
Unit for measuring the hardware cost of a power generation unit relative to the generated power
Euro per kilowatt hour
Unit for measuring the cost of electricity.
Euro per square metre
Unit for expressing cost per square metre
Euro per watt
Euro per watt hour
Euro per watt second
Fiji Dollar
Falkland Islands Pound
Pound Sterling
Lari
Cedi
Gibraltar pound
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United States Dollar (same day) (funds code)
Peso Uruguayo
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Vatu
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CFA Franc BEAC
Silver (one Troy ounce)
Gold (one Troy ounce)
European Composite Unit (EURCO) (Bonds market unit)
European Monetary Unit (E.M.U.-6) (Bonds market unit)
European Unit of Account 9 (E.U.A.-9) (Bonds market unit)
European Unit of Account 17 (E.U.A.-17) (Bonds market unit)
East Caribbean Dollar
Special Drawing Rights
Gold franc (special settlement currency)
UIC franc (special settlement currency)
CFA Franc BCEAO
Palladium (one Troy ounce)
CFP franc
Platinum (one Troy ounce)
Yemeni Rial
South African Rand
Zambian Kwacha
Zimbabwe Dollar
base unit SI candela divided by the power of the unit foot according to the Anglo-American and Imperial system of units by exponent 2
Candela per Square Inch
"Candela per Square Inch" is a unit for 'Luminance' expressed as $cd/in^{2}$.
Candela per Kilolumen
Candela per Lumen
obsolete, non-legal unit of the power in Germany relating to DIN 1301-3:1979
Swiss Francs per kilogram
Unit for measuring the hardware cost of substance or material
Clo
A C.G.S System unit for $\textit{Thermal Insulance}$ expressed as "clo".
Cord
The cord is a unit of measure of dry volume used in Canada and the United States to measure firewood and pulpwood. A cord is the amount of wood that, when 'ranked and well stowed' (arranged so pieces are aligned, parallel, touching and compact), occupies a volume of 128 cubic feet (3.62 cubic metres). This corresponds to a well stacked woodpile 4 feet (122 cm) wide, 4 feet (122 cm) high, and 8 feet (244 cm) long; or any other arrangement of linear measurements that yields the same volume. The name cord probably comes from the use of a cord or string to measure it.
Candlepower
"Candlepower" (abbreviated as cp) is a now-obsolete unit which was used to express levels of light intensity in terms of the light emitted by a candle of specific size and constituents. In modern usage Candlepower equates directly to the unit known as the candela.
Statcoulomb per Mole
"Statcoulomb per Mole" is a unit of measure for the electical charge associated with one mole of a substance. The mole is a unit of measurement used in chemistry to express amounts of a chemical substance, defined as an amount of a substance that contains as many elementary entities (e.g., atoms, molecules, ions, electrons) as there are atoms in 12 grams of pure carbon-12 (12C), the isotope of carbon with atomic weight 12.
Centilitre
0.01-fold of the SI base unit metre divided by the unit bar
Centimetre per Kelvin
Centimeter per Kelvin
0.01-fold of the SI base unit metre divided by the SI base unit kelvin
0.01-fold of the SI base unit metre divided by the product of the SI base unit second and the unit bar
0.01-fold of the SI base unit metre divided by the product of the SI base unit second and the SI base unit Kelvin
Centimetre Second Degree Celsius
Centimeter Second Degree Celsius
$\textit{Centimeter Second Degree Celsius}$ is a C.G.S System unit for 'Length Temperature Time' expressed as $cm-s-degC$.
Square Centimetre Minute
Square Centimeter Minute
"Square centimeter minute" is a unit for 'Area Time' expressed as $cm^{2} . m$.
Square centimetres per cubic centimetre
[CGS] unit of the spectral angle profile
Square Centimetre Second
Square Centimeter Second
"Square Centimeter Second" is a C.G.S System unit for 'Area Time' expressed as $cm^2 . s$.
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit bar
Cubic Centimetre per Cubic Centimetre
Cubic Centimeter per Cubic Centimeter
volume ratio consisting of the 0.000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit day and the unit bar
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit day and the SI base unit kelvin
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit hour and the unit bar
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit hour and the SI base unit kelvin
Cubic Centimetre per Kelvin
Cubic Centimeter per Kelvin
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit kelvin
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit kelvin
Cubic Centimetre per Cubic Metre
Cubic Centimeter per Cubic Meter
volume ratio consisting of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit minute and the unit bar
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit minute and the SI base unit kelvin
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the SI base unit second and the unit bar
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the SI base unit second and the SI base unit kelvin
Sextic Centimetre
Sextic Centimeter
[CGS] 0.01-fold of the CGS unit poise for dynamic viscosity divided by the SI base unit Kelvin
Centistokes
$\textit{Centistokes}$ is a C.G.S System unit for 'Kinematic Viscosity' expressed as $cSt$.
Deaths per 1000 individuals year
The typical expression of mortality rate, expressed as deaths per 1000 individuals, per year.
Deaths per Million individuals year
The expression of mortality rate, expressed as deaths per 1,000,000 individuals, per year.
The expression of mortality rate, expressed as deaths per Million individuals, per year.
Degree per Square Second
$\textit{Degree per Square Second}$ is an Imperial unit for $\textit{Angular Acceleration}$ expressed as $deg/s^2$.
Square degree
A square degree is a non-SI unit measure of solid angle. It is denoted in various ways, including deg, sq. deg. and $\circ^2$. Just as degrees are used to measure parts of a circle, square degrees are used to measure parts of a sphere. Analogous to one degree being equal to $\pi /180 radians$, a square degree is equal to ($\pi /180)$ or about 1/3283 steradian. The number of square degrees in a whole sphere is or approximately 41 253 deg. This is the total area of the 88 constellations in the list of constellations by area. For example, observed from the surface of the Earth, the Moon has a diameter of approximately $0.5^\circ$, so it covers a solid angle of approximately 0.196 deg, which is $4.8 \times 10$ of the total sky sphere.
Degree API
unit for the determination of the density of petroleum at 60 degrees F (15.56 degrees C)
Degree Celsius Centimetre
Degree Celsius Centimeter
$\textit{Degree Celsius Centimeter}$ is a C.G.S System unit for 'Length Temperature' expressed as $cm-degC$.
Degrees Celsius kilogram per square metre
Derived unit for the product of the temperature in degrees Celsius and the mass density of a medium, integrated over vertical depth or height in metres.
unit with the name °Celsius divided by the unit bar
Degree Celsius per Kelvin
The unit $\textit{Degree Celsius Per Kelvin}$ is Degree Celsius divided by the SI base unit kelvin.
unit with the name Degree Celsius divided by the SI base unit kelvin
Degrees Celsius per metre
Degree Celsius week
temperature multiplied by unit of time.
Degrees Celsius Squared
Square Degrees Celsius per second
Degree Fahrenheit Hour
Degree Fahrenheit Hour Square Foot per British Thermal Unit (international Table)
unit of the thermal resistor according to the Imperial system of units
degree Fahrenheit hour square foot per British thermal unit (international table) inch
unit of specific thermal resistance according to the Imperial system of units
Degree Fahrenheit Hour Square Foot per British Thermal Unit (thermochemical)
unit of the thermal resistor according to the according to the Imperial system of units
degree Fahrenheit hour square foot per British thermal unit (thermochemical) inch
Degree Fahrenheit Hour per BTU
$\textit{Degree Fahrenheit Hour per BTU}$ is an Imperial unit for 'Thermal Resistance' expressed as $degF-h/Btu$.
Degree Fahrenheit hour per British thermal unit (thermochemical)
The unit $\textit{Degree Fahrenheit hour per British thermal unit (thermochemical)}$ is a non SI-conform unit of the thermal resistance according to the Imperial system of units.
$\textit{Degree Fahrenheit per bar}$ is the traditional unit degree Fahrenheit for temperature according to the Anglo-American system of units divided by the unit bar.
Degree Fahrenheit per Kelvin
traditional unit degree Fahrenheit for temperature according to the Anglo-American system of units divided by the SI base unit Kelvin
Degree Fahrenheit per Square Second
The unit $\textit{Degree Fahrenheit per Square Second}$ is a C.G.S System unit for expressing the acceleration of a temperature expressed as $degF / s^2$.
'Degree Fahrenheit per Square Second' is a unit for expressing the acceleration of a temperature expressed as 'degF /s2'.
degree Fahrenheit second per British thermal unit (international table)
The unit $\textit{Degree Fahrenheit Second per British thermal unit (international table)}$ is a non SI-conform unit of the thermal resistance according to the Imperial system of units.
degree Fahrenheit second per British thermal unit (thermochemical)
The unit $\textit{Degree Fahrenheit Second per British thermal unit (thermochemical)}$ is a non SI-conform unit of the thermal resistance according to the Imperial system of units.
Diopter
The unit $\textit{Dioptre}$, or $\textit{Diopter}$, is a unit of measurement for the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, $1/metre$). For example, a $3 \; dioptre$ lens brings parallel rays of light to focus at $1/3\,metre$. The same unit is also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams. Though the diopter is based on the SI-metric system it has not been included in the standard so that there is no international name or abbreviation for this unit of measurement within the international system of units this unit for optical power would need to be specified explicitly as the inverse metre.
Dyne Second per Centimetre
Dyne Second per Centimeter
dyne second per centimetre to the fifth power
[CGS] unit of the acoustic impedance (volume flow rate-related pressure)
unit of level used to indicate that a power ratio is expressed in decibel (dB) with reference to one milliwatt (mW)
unit of level used to indicate that a power ratio is expressed in decibel (dB) with reference to one milliwatt (mW) devided by the 1,000,000-fold of the derived unit hertz
0.1-fold of the unit bel divided by 1,000-fold of the SI base unit metre
0.1-fold of the unit bel divided by the SI base unit metre
The decibel watt or dBW is a unit for the measurement of the strength of a signal expressed in decibels relative to one watt.
Decibars per year
A rate of change of pressure expressed in decibars over a period of an average calendar year (365.25 days).
Decibel Carrier Unit
"Decibel Carrier Unit" is a unit for 'Signal Detection Threshold' expressed as $dBc$.
Cubic Decimetre per Cubic Metre
Cubic Decimeter per Cubic Meter
volume ratio consisting of the 0.001-fold of the power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
decisiemens per metre
decisiemens per meter
Erg per Centimetre
Erg per Centimeter
product of the unit electronvolt and the power of the SI base unit metre with the exponent 2
product of the unit electronvolt and the power of the SI base unit metre with the exponent 2 divided by the SI base unit kilogram
Electronvolt per Angstrom
unit electronvolt divided by the unit angstrom
Electron Volt per Kelvin
$\textit{Electron Volt per Kelvin}$ is a unit for 'Heat Capacity' expressed as $ev/K$.
Electronvolt per Metre
Electronvolt per Meter
unit electronvolt divided by the SI base unit metre
1,000,000,000,000,000,000-fold of the unit bit divided by the SI base unit second
1,152,921,504,606,846,976-fold of the unit bit divided by the SI base unit metre
1,152,921,504,606,846,976-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,152,921,504,606,846,976-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
Fractional area
"Fractional area" is a unit for 'Solid Angle' expressed as $fa$.
Farad per Kilometre
Farad per Kilometer
SI derived unit farad divided by the 1 000-fold of the SI base unit metre
مقياس التبادل، الأس السالب للمتر
faradů na metr
Farad je Meter
farad per metre
Farad per Meter
faradio por metro
فاراد بر متر
farad par mètre
प्रति मीटर फैराड
farad al metro
ファラド毎メートル
farad per meter
farad na metr
farad por metro
farad pe metru
фарада на метр
farad na meter
farad bölü metre
法拉每米
Farad Per Meter ($F/m$) is a unit in the category of Electric permittivity. It is also known as farad/meter. This unit is commonly used in the SI unit system. Farad Per Meter has a dimension of M-1L-3T4I2 where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Abfarad per Centimetre
Abfarad per Centimeter
The absolute dielectric constant of free space is defined as the ratio of displacement to the electric field intensity. The unit of measure is the abfarad per centimeter, a derived CGS unit.
Statfarad
The $\text{Statfarad (statF)}$ is a unit in the category of Electric capacitance. It is also known as $statfarads$. This unit is commonly used in the cgs unit system. $Statfarad$ has a dimension of $M^{-1}L^{-2}T^4I^2$ where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. It can be converted to the corresponding standard SI unit F by multiplying its value by a factor of 1.11265E-012.
Frame per Second
"Frame per Second" is a unit for 'Video Frame Rate' expressed as $fps$.
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
Foot per Degree Fahrenheit
unit foot as a linear measure according to the Anglo-American and the Imperial system of units divided by the unit for temperature degree Fahrenheit
unit foot as a linear measure according to the Anglo-American and the Imperial system of units divided by the composed unit for pressure (pound-force square inch)
unit foot as a linear measure according to the Anglo-American and the Imperial system of units divided by the product of the SI base unit second and the traditional unit degree Fahrenheit
quotient of the unit foot according to the Anglo-American and the Imperial system of units and the SI base unit second divided by the composed unit for pressure (pound-force per square inch)
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
Square Foot Degree Fahrenheit
$\textit{Square Foot Degree Fahrenheit}$ is an Imperial unit for 'Area Temperature' expressed as $ft^{2}-degF$.
Square Foot Hour Degree Fahrenheit
$\textit{Square Foot Hour Degree Fahrenheit}$ is an Imperial unit for 'Area Time Temperature' expressed as $ft^{2}-h-degF$.
Square Foot Hour Degree Fahrenheit per BTU
$\textit{Square Foot Hour Degree Fahrenheit per BTU}$ is an Imperial unit for 'Thermal Insulance' expressed as $(degF-h-ft^{2})/Btu$.
Square Foot per BTU Inch
Square Foot Second Degree Fahrenheit
$\textit{Square Foot Second Degree Fahrenheit}$ is an Imperial unit for 'Area Time Temperature' expressed as $ft^{2}\cdot s\cdot degF$.
Cubic Foot per Degree Fahrenheit
power of the unit foot as a linear measure according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for temperature degree Fahrenheit
power of the unit foot as a linear measure according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the composed unit for pressure (pound-force per square inch)
0.000000000000001-fold of the unit farad
Femtomoles per kilogram
A 10**15 part quantity of substance of the measurand per kilogram mass of matrix.
Dry Gallon US
"Dry Gallon US" is a unit for 'Dry Volume' expressed as $dry_gal$.
Gilbert
The fundamental unit of magnetomotive force ($mmf$) in electromagnetic units is called a Gilbert. It is the $mmf$ which will produce a magnetic field strength of one Gauss (Maxwell per Square Centimeter) in a path one centimeter long.
product of the 0.001-fold of the SI base unit kilogram and the 0.01-fold of the SI base unit metre divided by the SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per litre and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.001-fold of the SI base unit kilogram per litre and unit litre per unit of time hour
gram hour per cubic metre cubic centimetre
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per unit of time hour
gram hour per power of metre with the exponent 6
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.001-fold of the SI base unit kilogram per litre and 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time minute
quotient of the 0.001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per unit of time minute
quotient of the 0.001-fold of the SI base unit kilogram per litre and unit litre per unit of time minute
gram minute per cubic metre cubic centimetre
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time minute
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per unit of time minute
gram minute per power of metre with the exponent 6
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per unit of time minute
Gram Millimetre
Gram Millimeter
unit of the imbalance as product of the 0.001-fold of the SI base unit kilogram and the 0.001-fold of the SI base unit metre
0.001-fold of the SI base unit kilogram divided by the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
Gram per Day
0,001-fold of the SI base unit kilogram divided by the unit day
0.001-fold of the SI base unit kilogram divided by the product out of the unit day and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the unit day and the SI base unit kelvin
Gram Degree Celsius
$\textit{Gram Degree Celsius}$ is a C.G.S System unit for 'Mass Temperature' expressed as $g \cdot degC$.
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the power of the SI base unit metre with the exponent 3 and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
Gram per Hour
0,001-fold of the SI base unit kilogram divided by the unit hour
0.001-fold of the SI base unit kilogram divided by the product out of the unit hour and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the unit hour and the SI base unit kelvin
0.001-fold of the SI base unit kilogram divided by the SI derived unit hertz
0.001-fold of the SI base unit kilogram divided by the SI base unit kelvin
Gram per Kilometre
Gram per Kilometer
0,001-fold of the SI base unit kilogram divided by the 1000-fold of the SI base unit metre
0.001-fold of the SI base unit kilogram divided by the product out of the unit litre and the unit bar
[CGS] quotient of the 0.001-fold of the SI base unit kilogram per litre and and the 0.01-fold of the CGS unit of the dynamic viscosity poise
0.001-fold of the SI base unit kilogram divided by the product out of the unit litre and the SI base unit kelvin
quotient of the 0.001-fold of the SI base unit kilogram per litre and the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per litre and the product of the SI derived unit pascal and the SI base unit second
[CGS] quotient of the 0.001-fold of the SI base unit kilogram per litre and the CGS unit of the dynamic viscosity poise
Gram per Metre
Gram per Meter
0,001-fold of the SI base unit kilogram divided by the SI base unit metre
0.001-fold of the SI base unit kilogram divided by the product out of the power of the SI base unit metre with the exponent 3 and the SI base unit bar
[CGS] quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.01-fold of the CGS unit of the dynamic viscosity poise
0.001-fold of the SI base unit kilogram divided by the product out of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the product of the SI derived unit pascal and the SI base unit second
[CGS] quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the CGS unit of the dynamic viscosity poise
Gram per Minute
0,001-fold of the SI base unit kilogram divided by the unit minute
0.001-fold the SI base unit kilogram divided by the product out of the unit minute and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the unit minute and the SI base unit kelvin
Gram per Mole
0.01-fold of the SI base unit kilogram divided by the SI base unit mol
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the unit litre and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the unit litre and the SI base unit kelvin
Gram per Millimetre Bar
Gram per Millimeter Bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the unit meter and the unit bar
Gram per Second
0,001fold of the SI base unit kilogram divided by the SI base unit second
0.001-fold of the SI base unit kilogram divided by the product out of the SI base unit second and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the SI base unit second and the SI base unit kelvin
quotient of the 0.001-fold of the SI base unit kilogram per litre and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per litre and unit litre per SI base unit second
gram second per cubic metre cubic centimetre
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per SI base unit second
gram second per power of metre with the exponent 6
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per SI base unit second
1,073,741,824-fold of the unit bit divided by the SI base unit metre
1,073,741,824-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,073,741,824-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
1,000,000,000-fold of the unit bit divided by the SI base unit metre
Gigabit per Second
A gigabit per second (Gbit/s or Gb/s) is a unit of data transfer rate equal to 1,000,000,000 bits per second.
Gigabecquerel
1,000,000,000-fold of the derived SI unit becquerel
1 000 000 000-fold of the derived SI unit becquerel
Gigacoulomb per Cubic Metre
Gigacoulomb per Cubic Meter
1,000,000,000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
1 000 000 000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
1,000,000,000-fold of the unit floating point operations divided by the SI base unit second
1,000,000,000-fold of the product out of the SI derived unit ohm and the SI unit metre
1,000,000,000-fold of the SI derived unit ohm divided by the SI unit metre
Hartley per Second
The "Hartley per Second" is a unit of information rate.
unit of the power according to the Anglo-American system of units
Hour Square Foot
"Hour Square Foot" is an Imperial unit for 'Area Time' expressed as $hr-ft^{2}$.
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
Hours per Year
Uur per Jaar
Hours per year, used for the time an industrial facility or installation is active during one year
هرتز لكل كلفن
hertz na kelvin
Hertz je Kelvin
hertz per kelvin
hercio por kelvin
هرتز بر کلوین
hertz par kelvin
हर्ट्ज प्रति कैल्विन
hertz al kelvin
ヘルツ毎立方メートル
herc na kelwin
hertz por kelvin
hertz pe kelvin
герц на кельвин
hertz bölü kelvin
$\textit{Hertz per Kelvin}$ is a unit for 'Inverse Time Temperature' expressed as $Hz K^{-1}$.
Hertz per Volt
In the Hertz per Volt standard the frequency of the note is directly related to the voltage. A pitch of a note goes up one octave when its frequency doubles, meaning that the voltage will have to double for every octave rise. Depending on the footage (octave) selected, nominally one volt gives 1000Hz, two volts 2000Hz and so on. In terms of notes, bottom C would be 0.25 volts, the next C up would be 0.5 volts, then 1V, 2V, 4V, 8V for the following octaves. This system was used mainly by Yamaha and Korg.
Hectopascal per Bar
100-fold of the SI derived unit pascal divided by the unit bar
Hectopascals per hour
A change in pressure of one hundred Newtons per square metre (100 Pascals) per hour. Equivalent to a change of one millibar per hour.
Hectopascal per Kelvin
100-fold of the SI derived unit pascal divided by the SI base unit kelvin
100-fold of the SI derived unit pascal divided by the SI base unit metre
unit of the translation factor for implementation from rotation to linear move according to the Anglo-American and the Imperial system of units
Inch per Degree Fahrenheit
unit inch according to the Anglo-American and the Imperial system of units divided by the unit for temperature degree Fahrenheit
unit inch according to the Anglo-American and the Imperial system of units divided by the composed unit for pressure (pound-force per square inch)
unit inch according to the Anglo-American and the Imperial system of units divided by the product of the SI base unit second and the traditional unit degree Fahrenheit
quotient of the unit inch according to the Anglo-American and the Imperial system of units and the SI base unit second divided by the composed unit for pressure (pound-force per square inch)
International Unit per Litre
International Unit per Liter
The $\textit{International Unit per Liter}$ is a unit for 'Serum Or Plasma Level' expressed as $IU/L$. The magnitude of one $IU/L$ depends on the material, so there is no single conversion multiplier.
International Unit per milligram
International Unit per milligramme. The magnitude of one $IU/L$ depends on the material, so there is no single conversion multiplier.
International Unit per milliliter
The $\textit{International Unit per Milliliter}$ is a unit for 'Serum Or Plasma Level' expressed as $IU/mL$. The magnitude of one $IU/L$ depends on the material, so there is no single conversion multiplier.
Joule Metre per Mole
Joule Meter per Mole
$\textit{Joule Meter per Mole}$ is a unit for 'Length Molar Energy' expressed as: $$J \cdot m \cdot mol^{-1}$$.
Joule Square Metre
Joule Square Meter
Joule Square Metre per Kilogram
Joule Square Meter per Kilogram
Joule per Cubic Centimetre Kelvin
Joule per Cubic Centimeter Kelvin
$\textit{Joule per Cubic Centimeter Kelvin}$ is a unit for 'Volumetric Heat Capacity' expressed as $J/(cm^{3} K)$.
Joule per Cubic Centimeter Kelvin is a unit for Volumetric Heat Capacity expressed as J/(cm³·K)
Joule per Kilogram Kelvin Cubic Metre
Joule per Kilogram Kelvin Cubic Meter
Joule per Kilogram Kelvin Pascal
Joule per Cubic Metre Kelvin
Joule per Cubic Meter Kelvin
$\textit{Joule per Cubic Meter Kelvin}$ is a unit for 'Volumetric Heat Capacity' expressed as $J/(m^{3} K)$.
Joule per Quartic Metre
Joule per Quartic Meter
The unit $\textit{Joule Per Quartic Meter}$ ($J/m^4$) is a unit for the spectral concentration of radiant energy density (in terms of wavelength), or the spectral radiant energy density (in terms of wave length). This unit is commonly used in the SI unit system.
Joule per Square Tesla
A measure of the diamagnetic energy, for a Bohr-radius spread around a magnetic axis, per square Tesla.
Joule Second per Mole
$\textit{Joule Second per Mole}$ is a unit for 'Molar Angular Momentum' expressed as $J s mol^{-1}$.
Kelvin day
Kelvin metres
Kelvin metres per second
Kelvin Metre per Watt
Kelvin Meter per Watt
product of the SI base unit kelvin and the SI base unit metre divided by the derived SI unit watt
Kelvin square metres per kilogram second
Kelvin Pascals per second
SI base unit kelvin divided by the unit bar
Kelvin per Kelvin
SI base unit kelvin divided by the SI base unit kelvin
Kelvin per metre
A change of temperature on the Kelvin temperature scale in one SI unit of length.
SI base unit kelvin divided by the SI derived unit pascal
Kelvin per Square Second
$\textit{Kelvin per Square Second}$ is a unit for 'Temperature Per Time Squared' expressed as $K / s^2$.
Kelvin per Tesla
$\textit{Kelvin per Tesla}$ is a unit for 'Temperature Per Magnetic Flux Density' expressed as $K T^{-1}$.
Kelvin je Watt
kelvin per watt
kelvin al watt
Thermal resistance is a heat property and a measure of a temperature difference by which an object or material resists a heat flow (heat per time unit or thermal resistance). Thermal resistance is the reciprocal thermal conductance. Absolute thermal resistance is the temperature difference across a structure when a unit of heat energy flows through it in unit time. It is the reciprocal of thermal conductance. The SI units of thermal resistance are kelvins per watt or the equivalent degrees Celsius per watt (the two are the same since as intervals).
Kelvin second
Square Kelvin
Katal per Litre
Katal per Liter
A unit of catalytic activity used especially in the chemistry of enzymes. A catalyst is a substance that starts or speeds a chemical reaction. Enzymes are proteins that act as catalysts within the bodies of living plants and animals. A catalyst has an activity of one katal if it enables a reaction to proceed at the rate of one mole per second.
the SI derived unit katal divided by the SI base unit metre to the power three
Katal per Microlitre
Katal per Microliter
1024-fold of the unit bit divided by the SI base unit metre
1024-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1024-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
1,000-fold of the SI base unit ampere divided by the SI base unit kelvin
Kiloampere per Square Metre
Kiloampere per Square Meter
1 000-fold of the SI base unit ampere divided by the power of the SI base unit metre with the exponent 2
1,000-fold of the unit baud for the symbol rate in communications engineering and telecommunication
Kilobit per Second
A kilobit per second (kB/s) is a unit of data transfer rate equal to 1,000 bits per second.
Kilobyte per Second
A kilobyte per second (kByte/s) is a unit of data transfer rate equal to 1000 bytes per second or 8000 bits per second.
Kilocoulomb per Cubic Metre
Kilocoulomb per Cubic Meter
1 000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
Kilocalorie per Centimetre Second Degree Celsius
Kilocalorie per Centimeter Second Degree Celsius
Kilocalorie per Mole Degree Celsius
A $\textit{Kilocalorie per Mole Degree Celsius}$ is a unit for 'Molar Heat Capacity', expressed as $kcal/(mol-degC)$.
kilocalorie (international table) per gram kelvin
unit of the mass-related heat capacity as quotient 1,000-fold of the calorie (international table) divided by the product of the 0.001-fold of the SI base units kilogram and kelvin
Kilocalorie (international Table) per Hour Metre Degree Celsius
Kilocalorie (international Table) per Hour Meter Degree Celsius
1 000-fold of the no longer approved unit international calorie for energy divided by the product of the SI base unit metre, the unit hour for time and the unit degree Celsius for temperature
Kilo Electron Volt per Micrometre
Kilo Electron Volt per Micrometer
"Kilo Electron Volt per Micrometer" is a unit for 'Linear Energy Transfer' expressed as $keV/microM$.
product of the SI base unit kilogram and the 0.01-fold of the SI base unit metre divided by the SI base unit second
Kilogram Kelvin
$\textit{Kilogram Kelvin}$ is a unit for 'Mass Temperature' expressed as $kg-K$.
unit of the imbalance as a product of the SI base unit kilogram and the SI base unit metre
SI base unit kilogram divided by the unit bar
SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the unit bar
SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit
Kilogram per Day
SI base unit kilogram divided by the unit day
SI base unit kilogram divided by the product out of the unit day and the unit bar
SI base unit kilogram divided by the product out of the unit day and the SI base unit kelvin
SI base unit kilogram divided by the product out of the 0.001-fold of the power of the SI base unit metre with the exponent 3 and the unit bar
SI base unit kilogram divided by the product out of the 0.001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
Kilogram per Gigajoule
SI base unit kilogram divided by the SI base unit gigajoule
SI base unit kilogram divided by the product out of the unit hour and the unit bar
SI base unit kilogram divided by the product out of the unit hour and the SI base unit kelvin
Kilogram per Joule
SI base unit kilogram divided by the SI base unit joule
SI base unit kilogram divided by the SI base unit kelvin
SI base kilogram divided by the 1,000-fold of the SI base unit metre
Kilogram per Kilomol
SI base unit kilogram divided by the 1 000-fold of the SI base unit mol
SI base unit kilogram divided by the product out of the unit litre and the unit bar
SI base unit kilogram divided by the product out of the unit litre and the SI base unit kelvin
Kilogram per Square Metre Square Second
Kilogram per Square Meter Square Second
SI base unit kilogram divided by the product out of the power of the SI base unit metre with the exponent 3 and the unit bar
SI base unit kilogram divided by the product out of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
SI base unit kilogram divided by the product of the power of the SI base unit metre with exponent 3 and the SI derived unit pascal
Kilograms per cubic metre second
Kilogram per Minute
SI base unit kilogram divided by the unit minute
SI base unit kilogram divided by the product out of the unit minute and the unit bar
SI base unit kilogram divided by the product out of the unit minute and the SI base unit kelvin
Kilogram per Mol
The unit $\textit{}$, symbol $kg/mol$, is the base SI unit for molar mass. In chemistry, the molar mass $M$ is defined as the mass of a given substance (chemical element or chemical compound) divided by its amount of substance. It is a physical property of a given substance. However, for historical reasons, molar masses are almost always expressed in $g/mol$. As an example, the molar mass of water is approximately: $18.01528(33) \; g/mol$.
Kilogram per Mega BTU
$\textit{Kilogram per Mega BTU}$ is an Imperial unit for 'Mass Per Energy' expressed as $kg/MBtu$.
Kilogram per Mega BTU is an Imperial Unit for 'Mass Per Energy.
SI base unit kilogram divided by the SI derived unit pascal
SI base unit kilogram divided by the product out of the SI base unit second and the unit bar
SI base unit kilogram divided by the product out of the SI base unit second and the SI base unit kelvin
SI base unit kilogram divided by the product of the SI base unit second and the SI derived unit pascal
Kilogram per Year
Kilogram per Jaar
The SI base unit kilogram divided by the unit year
kilogram divided by the unit year with 365 days
Kilogram Square Second
Square Kilograms per square second
SI base unit metre divided by the product of the SI base unit second and the unit bar
Cubic Kilometre per Square Second
Cubic Kilometer per Square Second
$\textit{Cubic Kilometer per Square Second}$ is a unit for $\textit{Standard Gravitational Parameter}$ expressed as $km^3/s^2$.
Kilomole per Hour
1 000-fold of the SI base unit mole divided by the unit for time hour
1,000-fold of the SI base unit mol divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
1,000-fold of the SI base unit mol divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
Kilomole per Minute
1 000-fold of the SI base unit mole divided by the unit for time minute
Kilomole per Second
1 000-fold of the SI base unit mol divided by the SI base unit second
Kilonewton Metre per Degree
Unit for expressing the value of the torsional spring constant
kilonewton metre per degree metre
A common unit for measuring the modulus of rotational subgrade reaction.
Kilonewton Metre per metre
Scaling of the base unit for expressing the rolling resistance, nM/m, by a factor of 1000
Kilo Newton Square Metre
Kilo Newton Square Meter
1,000-fold of the SI derived unit newton divided by the cube of the SI base unit metre
1,000-fold of the product of the SI derived unit ohm and the SI base unit metre
1,000-fold of SI derived unit ohm per metrical non SI unit bar
1,000-fold of the SI derived unit ohm per SI base unit kelvin
1,000-fold of the SI derived unit ohm divided by the SI base unit metre
Kilopascal per Bar
1 000-fold of the SI derived unit pascal divided by the unit bar
Kilopascal per Kelvin
1 000-fold of the SI derived unit pascal divided by the SI base unit kelvin
1,000-fold of the SI derived unit pascal divided by the SI base unit metre
Kilopascal per Millimetre
Kilopascal per Millimeter
1 000-fold of the derived SI unit pascal divided by the 0.001-fold of the SI base unit metre
Kilosiemens per Metre
Kilosiemens per Meter
1 000-fold of the SI derived unit siemens divided by the SI base unit metre
KiloTonne per Year
KiloTon per Jaar
1,000,000-fold of the SI base unit kilogram divided by the unit year
1000 metric tonne divided by the unit year with 365 days
Kilovolt per Metre
Kilovolt per Meter
1 000-fold of the SI derived unit volt divided by the SI base unit metre
1,000-fold of the SI derived unit watt divided by the product of the SI base unit metre and the unit for temperature degree Celsius
1,000-fold of the SI derived unit watt divided by the product of the SI base unit metre and the SI base unit kelvin
Kiloweber per Metre
Kiloweber per Meter
1 000-fold of the SI derived unit weber divided by the SI base unit metre
unit litre divided by the product out of the unit day and the unit bar
unit litre divided by the product out of the unit day and the SI base unit kelvin
unit litre divided by the product out of the unit hour and the unit bar
unit litre divided by the product out of the unit hour and the SI base unit kelvin
Litre per Kelvin
Liter per Kelvin
unit litre divided by the SI base unit kelvin
Litre per Litre
Liter per Liter
volume ratio consisting of the unit litre divided by the unit litre
unit litre divided by the product out of the unit minute and the unit bar
unit litre divided by the product out of the unit minute and the SI base unit kelvin
unit litre divided by the product out of the SI base unit second and the unit bar
unit litre divided by the product out of the SI base unit second and the SI base unit kelvin
Litre per Second Square Metre
Liter per Second Square Meter
Ventilation rate in Litres per second divided by the floor area
Lambert
The lambert (symbol $L$, $la$ or $Lb$) is a non-SI unit of luminance. A related unit of luminance, the foot-lambert, is used in the lighting, cinema and flight simulation industries. The SI unit is the candela per square metre ($cd/m^2$).
Foot Lambert
"Foot Lambert" is a C.G.S System unit for 'Luminance' expressed as $ft-L$.
Pound Degree Fahrenheit
$\textit{Pound Degree Fahrenheit}$ is an Imperial unit for 'Mass Temperature' expressed as $lb-degF$.
Pound Degree Rankine
$\textit{Pound Degree Rankine}$ is an Imperial unit for 'Mass Temperature' expressed as $lb-degR$.
product of the avoirdupois pound according to the avoirdupois unit system and the unit foot according to the Anglo-American and Imperial system of units divided by the SI base unit second
pound square foot per gallon(UK) pound-force second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
pound square foot per gallon (US) pound-force second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
pound square foot per cubic inch pound-force second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
pound hour per power of foot with the exponent 6
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit gallon (UK) according to the Imperial system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the unit gallon (US) according to the Anglo-American system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
pound hour per power of inch with the exponent 6
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
Pound Mass (avoirdupois) Inch
unit of the unbalance (product of avoirdupois pound according to the avoirdupois system of units and inch according to the Anglo-American and Imperial system of units)
product of the avoirdupois pound according to the avoirdupois unit system and the unit inch according to the Anglo-American and Imperial system of units divided by the SI base unit second
pound square inch per cubic foot pound-force second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
pound square inch per gallon(UK) pound-force second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
pound square inch per gallon (US) pound-force second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
pound square inch per cubic inch pound-force second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
pound minute per power of foot with the exponent 6
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit gallon (UK) according to the Imperial system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the unit gallon (US) according to the Anglo-American system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
pound minute per power of inch with the exponent 6
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
Pound (avoirdupois) per Day
unit of the mass avoirdupois pound according to the avoirdupois system of units divided by the unit for time day
pound (avoirdupois) per degree Fahrenheit
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the traditional unit degree Fahrenheit
Pound per Foot
"Pound per Foot" is an Imperial unit for 'Mass Per Length' expressed as $lb/ft$.
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
pound (avoirdupois) per cubic foot degree Fahrenheit
traditional unit pound (avoirdupois) for mass according to the avoirdupois system of units divided by the product of the power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the traditional unit degree Fahrenheit
traditional unit pound (avoirdupois) for mass according to the avoirdupois system of units divided by the power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the composed unit for pressure (pound-force per square inch)
pound (avoirdupois) per hour degree Fahrenheit
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the product of the unit for time hour and the traditional unit degree Fahrenheit
quotient of the traditional unit avoirdupois pound for mass according to the avoirdupois system of units divided by the unit for time hour divided by the composed unit for pressure (pound-force per square inch)
Pound per Inch
"Pound per Inch" is an Imperial unit for 'Mass Per Length' expressed as $lb/in$.
pound (avoirdupois) per cubic inch degree Fahrenheit
traditional unit avoirdupois pound for mass according to the avoirdupois system of units divided by the product of the power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the traditional unit degree Fahrenheit
quotient of the traditional unit avoirdupois pound for mass according to the avoirdupois system of units divided by the power of the unit inch with the exponent 3 according to the Anglo-American and the Imperial system of units divided by the composed unit for pressure (pound-force per square inch)
pound (avoirdupois) per minute degree Fahrenheit
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the product of the unit for time minute and the traditional unit degree Fahrenheit
quotient of the traditional unit avoirdupois pound for mass according to the avoirdupois system of units and the unit minute for time divided by the composed unit for pressure (pound-force per square inch)
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the composed unit for pressure (pound-force per square inch)
Pound (avoirdupois) per Second
unit of the mass avoirdupois pound according to the avoirdupois system of units divided by the SI base unit for time second
pound (avoirdupois) per second degree Fahrenheit
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the product of the SI base unit second and the traditional unit degree Fahrenheit
quotient of the traditional unit avoirdupois pound for mass according the avoirdupois system of units and the SI base unit second divided by the composed unit for pressure (pound-force per square inch)
unit for linear mass according to avoirdupois system of units
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
pound second per power of foot with the exponent 6
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit gallon (UK) according to the Imperial system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the unit gallon (US) according to the Anglo-American system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
pound second per power of inch with the exponent 6
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
unit for length-related rotational moment according to the Anglo-American and Imperial system of units
Pound Force per Square Inch Degree Fahrenheit
composed unit for pressure (pound-force per square inch) divided by the unit degree Fahrenheit for temperature
Pound Force per Square Inch Second
"Pound Force per Square Inch Second" is a unit for 'Force Per Area Time' expressed as $lbf / in^{2}-s$.
Pound Force per Pound
"Pound Force per Pound" is an Imperial unit for 'Thrust To Mass Ratio' expressed as $lbf/lb$.
product of the SI derived unit lumen and the unit hour
SI derived unit lumen divided by the power of the unit foot according to the Anglo-American and Imperial system of units by exponent 2
SI derived unit lumen divided by the power of the SI base unit metre with the exponent 2
Lumen per Watt
A measurement of luminous efficacy, which is the light output in lumens using one watt of electricity.
lumen second
In photometry, the lumen second is the SI derived unit of luminous energy. It is based on the lumen, the SI unit of luminous flux, and the second, the SI base unit of time. The lumen second is sometimes called the talbot (symbol T). An older name for the lumen second was the lumberg.
Lux Hour
The SI unit for measuring the illumination (illuminance) of a surface. One lux is defined as an illumination of one lumen per square meter or 0.0001 phot. In considering the various light units, it's useful to think about light originating at a point and shining upon a surface. The intensity of the light source is measured in candelas; the total light flux in transit is measured in lumens (1 lumen = 1 candelau00b7steradian); and the amount of light received per unit of surface area is measured in lux (1 lux = 1 lumen/square meter). One lux is equal to approximately 0.09290 foot candle.
product of the SI derived unit lux and the SI base unit second
Meter mal Kelvin
metre kelvin
Meter Kelvin
متر کلوین
metro per kelvin
meter kelvin
米开尔文
$\textit{Meter Kelvin}$ is a unit for 'Length Temperature' expressed as $m K$.
Metre Kelvin per Watt
Meter Kelvin per Watt
$\textit{Meter Kelvin per Watt}$ is a unit for 'Thermal Resistivity' expressed as $K-m/W$.
Metre Kilogram
Meter Kilogram
product of SI base units metre and kilogram given as dimensional product dim Q = L**$a} M**$b} T**$g} I**$d} $TH**$e} N**$z} J**$i}
SI base unit metre divided by the unit bar
Metre per Farad
Meter per Farad
Metre per Kelvin
Meter per Kelvin
SI base unit metre divided by the SI derived unit pascal
unit of the translation factor for implementation from rotation to linear move according
SI base unit meter divided by the product of SI base unit second and the unit bar
SI base units metre divided by the product of the SI base unit second and the SI base unit kelvin
SI base unit metre divided by the product of the SI base unit second and the SI base unit Kelvin
SI base unit metre divided by the product of the SI derived unit volt and the SI base unit second
product of SI base units metre and second to the power of minus one given as dimensional product dim Q = L**$a} M**$b} T**$g} I**$d} $TH**$e} N**$z} J**$i}
product of SI base units metre and second to the power of two given as dimensional product dim Q = L**$a} M**$b} T**$g} I**$d} $TH**$e} N**$z} J**$i}
Square Metre Hour Degree Celsius per Kilocalorie (international Table)
Square Meter Hour Degree Celsius per Kilocalorie (international Table)
product of the power of the SI base unit metre with the exponent 2, of the unit hour for time and the unit degree Celsius for temperature divided by the 1000-fold of the out of use unit for energy international calorie
Square Metres square Hertz
Square metres cubic Hertz
Square metres Hertz^4
Square Metre Kelvin
Square Meter Kelvin
$\textit{Square Meter Kelvin}$ is a unit for 'Area Temperature' expressed as $m^{2}-K$.
Square metres per gram of dry sediment
square metres per hectare
square meters per hectare
Square Metre per Hectare Year
Square Meter per Hectare Year
power of the SI base unit metre with the exponent 2 divided by the unit hectare and by the unit year
Square metres per Hertz
Square metres per Hertz degree
Square metres per square Hertz
Square Metre per Joule
Square Meter per Joule
Square Metre per Kelvin
Square Meter per Kelvin
square metre per Kilowatt
A common unit for measuring area per power
čtvereční metr na metr
Quadratmeter je Meter
square metre per metre
metro cuadrado pormetro
mètre carré par mètre
metro quadrato al metro
meter persegi per meter
metr kwadratowy na metr
metro quadrado por metro
metru pătrat pe metru
квадратный метр на метр
kvadratni meter na meter
metrekare per metre
square metre divided by metre: plain text description in English
square metre per square metre
square meter per square meter
A square metre unit of area per square metre
Square Metre per Newton
Square Meter per Newton
power of the SI base unit metre with the exponent 2 divided by the derived SI unit newton
The unit $\textit{Square Metre per Second Bar}$ typically refers to a measure of fluid permeability in the context of materials science or engineering. It is the volume of fluid (in square metres) that can pass through a material in one second under a pressure difference of one bar. This unit is particularly important in fields such as petrophysics, hydrogeology, and materials engineering, where understanding the flow of fluids through porous media is crucial. A $Bar$ is not an SI unit but is a unit of pressure that is widely used in various scientific and engineering contexts. A bar is equal to $100,000\ pascals$, (symbol $Pa$), approximately equal to the atmospheric pressure on Earth at sea level.
The unit $\textit{Square Metre per Second Kelvin}$ is a heat transfer coefficient that is area-dependent and varies with time and temperature difference. Heat transfer is typically defined in terms of watts per square meter per kelvin ($W/m^{2}K$), representing the rate of heat transfer across a surface per unit area per unit temperature difference.
The unit $\textit{Square Metre per Second Pascal}$, symbol $m^{2}/s\cdot Pa$, is a measure of permeability, which describes the ability of a material to allow fluids to pass through it under a pressure gradient. It's particularly relevant in fields like hydrogeology, petroleum engineering, and civil engineering, where understanding fluid flow through porous materials is essential.
Square Metre per Steradian
Square Meter per Steradian
Square Metre per Steradian Joule
Square Meter per Steradian Joule
čtvereční metr na watt
Quadratmeter je Watt
square metre per watt
metro cuadrado porvatio
mètre carré par watt
metro quadrato al watt
meter persegi per watt
metr kwadratowy na wat
metro quadrado por watt
metru pătrat pe watt
квадратный метр на ватт
kvadratni meter na watt
metrekare per watt
Square metre seconds per radian
Square Metre Steradian
Square Meter Steradian
"Square Meter Steradian" is a unit for 'Area Angle' expressed as $m^{2}-sr$.
power of the SI base unit metre with the exponent 3 divided by the unit bar
Cubic Metre per Coulomb
Cubic Meter per Coulomb
power of the SI base unit metre with the exponent 3 divided by the product out of the unit day and the unit bar
power of the SI base unit metre with the exponent 3 divided by the product out of the unit day and the SI base unit kelvin
Cubic Metre per Hectare
Cubic Meter per Hectare
Cubic Metre per Hectare Year
Cubic Meter per Hectare Year
power of the SI base unit metre with the exponent 3 divided by the unit hectare and by the unit year
power of the SI base unit metre with the exponent 3 diveded by the product out of the unit hour and the unit bar
power of the SI base unit metre with the exponent 3 divided by the product out of the unit hour and the SI base unit kelvin
Cubic Metre per Kelvin
Cubic Meter per Kelvin
Cubic Metre per Kilogram Square Second
Cubic Meter per Kilogram Square Second
Cubic Metre per Square Metre
Cubic Meter per Square Meter
power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 2
Cubic Metre per Cubic Metre
Cubic Meter per Cubic Meter
power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
power of the SI base unit metre with the exponent 3 divided by the product out of the unit minute and the unit bar
power of the SI base unit metre with the exponent 3 divided by the product out of the unit minute and the SI base unit kelvin
power of the SI base unit meter by exponent 3 divided by the SI derived unit pascal
power of the SI base unit metre with the exponent 3 divided by the product out of the SI base unit second and the unit bar
power of the SI base unit metre with the expontent 3 divided by the product out of the SI base unit second and the SI base unit kelvin
unit of volume flow cubic meters by the SI base unit second related to the transmission surface in square metres
power of the SI base unit meter by exponent 3 divided by the product of the SI base unit second and the SI derived unit pascal
Cubic Metre per Square Second
Cubic Meter per Square Second
$\textit{Cubic Meter per Square Second}$ is a C.G.S System unit for $\textit{Standard Gravitational Parameter}$ expressed as $m^3/s^2$
Metres to the power four per second
Quintic Metre
Quintic Meter
Sextic Metre
Sextic Meter
Mach
"Mach" is a unit for 'Dimensionless Ratio' expressed as $mach$.
Mohm
The $\textit{Mohm}$ is a unit of mechanical mobility for sound waves, being the reciprocal of the mechanical $ohm$ unit of impedance, i.e., for an acoustic medium, the ratio of the flux or volumic speed (area times particle speed) of the resulting waves through it to the effective sound pressure (i.e. force) causing them, the unit being qualified, according to the units used, as m.k.s. or c.g.s. The mechanical ohm is defined as: $$Mohm \equiv 1\,dyn\cdot\,s\cdot cm^{-1} \text{ or } 10^{-3} N\cdot s\cdot m^{-1}$$.
Mole Degree Celsius
$\textit{Mole Degree Celsius}$ is a C.G.S System unit for $\textit{Temperature Amount Of Substance}$ expressed as $mol-degC$.
Mole Kelvin
The $\textit{Mole Kelvin}$ is a unit for $\textit{Temperature Amount Of Substance}$ expressed as $mol-K$.
Moles per gram hour
SI unit of the quantity of matter per SI unit of mass per unit of time expressed in hour.
Mole per Hour
SI base unit mole divided by the unit for time hour
SI base unit mol divided by the product of the SI base unit kilogram and the unit bar
SI base unit mol divided by the product of the SI base unit kilogram and the SI base unit Kelvin
Mole per Kilogram Pascal
Mole Per Kilogram Pascal ($mol/kg-pa$) is a unit of Molar Mass variation due to Pressure.
SI base unit mol divided by the product of the unit litre and the unit bar
SI base unit mol divided by the product of the unit litre and the SI base unit Kelvin
Moles per square metre
SI unit of quantity of matter per SI unit area.
Moles per Square Metre Day
Moles per Square Meter Day
quantity of matter per unit area per unit of time.
Moles per square metre second
SI unit of quantity of matter per SI unit area per SI unit of time.
Moles per square metre second metre
Moles per square metre second metre steradian
Moles per square metre second steradian
SI base unit mol divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
SI base unit mol divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
SI base unit mol divided by the product of the power from the SI base unit metre with exponent 3 and the SI derived unit pascal
Moles per cubic metre second
SI unit of quantity of matter per SI unit volume per SI unit of time.
Mole per Minute
SI base unit mole divided by the unit for time minute
Moles per mole
Unavailable.
Mole per Second
SI base unit mol divided by the SI base unit second
Mol per Tonne
Mole Per Tonne (mol/t) is a unit of Molality
Pound Mole Degree Fahrenheit
$\textit{Pound Mole Degree Fahrenheit}$ is a unit for 'Mass Amount Of Substance Temperature' expressed as $lb-mol-degF$.
non SI-conform unit of the power of the amount of substance non-SI compliant unit of the molar flux relating that a pound mole of a chemical composition the same number of pound corresponds like the molecular weight of a molecule of this composition in atomic mass units
non SI-conformunit of the power of the amount of substance non-SI compliant unit of the molar flux relating that a pound mole of a chemical composition the same number of pound corresponds like the molecular weight of a molecule of this composition in atomic mass units
1,048,576-fold of the unit bit divided by the SI base unit metre
1,048,576-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,048,576-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
Megaampere per Square Metre
Megaampere per Square Meter
1,000,000-fold of the SI base unit ampere divided by the power of the SI base unit metre with the exponent 2
1,000,000-fold of the unit baud for the symbol rate in communications engineering and telecommunication
Megabit per Second
A megabit per second (Mbit/s or Mb/s; not to be confused with mbit/s which means millibit per second, or with Mbitps which means megabit picosecond) is a unit of data transfer rate equal to 1,000,000 bits per second or 1,000 kilobits per second or 125,000 bytes per second or 125 kilobytes per second.
Megacoulomb per Cubic Metre
Megacoulomb per Cubic Meter
1,000,000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
Mega Electron Volt Femtometre
Mega Electron Volt Femtometer
$\textit{Mega Electron Volt Femtometer}$ is a unit for 'Length Energy' expressed as $MeV fm$.
Mega Electron Volt per Centimetre
Mega Electron Volt per Centimeter
"Mega Electron Volt per Centimeter" is a unit for 'Linear Energy Transfer' expressed as $MeV/cm$.
megafloating point operations per second
1,000,000-fold of the unit floating point operations divided by the SI base unit second
product of the 1,000,000-fold of the SI derived unit hertz and the 1,000-fold of the SI base unit metre
Mega Hertz per Kelvin
$\textit{Mega Hertz per Kelvin}$ is a unit for 'Inverse Time Temperature' expressed as $MHz K^{-1}$.
MegaJoule per Kelvin
MegaJoule Per Kelvin (MegaJ/K) is a unit in the category of Entropy.
Megajoule Per Square Metre Per Day
Megajoule Per Square Meter Per Day
MegaJoule Per Square Meter Per Day (\(MegaJ/m^2/day\)) is a unit in the category of Energy density over time.
1,000,000-fold of the SI derived unit joule divided by the power of the SI base unit metre with the exponent 2
1,000,000-fold of the product of the SI derived unit ohm and the SI unit metre
1,000,000-fold of SI derived unit ohm per metrical non SI unit bar
1,000,000-fold of the SI derived unit ohm per SI base unit kelvin
1,000,000-fold of the SI derived unit ohm divided by the 1,000-fold of the SI base unit metre.
1,000,000-fold of the SI derived unit ohm divided by the SI base unit metre
Megapascal Square Root Metre
Megapascal Square Root Meter
1,000,000-fold of the derived unit Pascal Square Root Meter
Megapascal per Bar
1,000,000-fold of the SI derived unit pascal divided by the unit bar
Megapascal per Kelvin
1,000,000-fold of the SI derived unit pascal divided by the SI base unit kelvin
Megasiemens per Metre
Megasiemens per Meter
1,000,000-fold of the SI derived unit siemens divided by the SI base unit metre
Megatonne pro Jahr
Megatonne per Year
Mégatonne par An
1,000,000,000-fold of the SI base unit kilogram divided by the unit year
1,000,000 metric tonne divided by the unit year with 365 days
Megavolt per Metre
Megavolt per Meter
1,000,000-fold of the SI derived unit volt divided by the SI base unit metre
0.000001-fold of the SI base unit ampere divided by the SI base unit kelvin
Microbecquerels per kilogram
One radioactive disintegration per hundred thousand seconds from an SI standard unit of mass of sample.
Microbecquerels per litre
Microcoulomb per Cubic Metre
Microcoulomb per Cubic Meter
0.000001-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
MicroCurie
Another commonly used measure of radioactivity, the microcurie: $1 \micro Ci = 3.7 \times 10 disintegrations per second = 2.22 \times 10 disintegrations per minute$. A radiotherapy machine may have roughly 1000 Ci of a radioisotope such as caesium-137 or cobalt-60. This quantity of radioactivity can produce serious health effects with only a few minutes of close-range, un-shielded exposure. The typical human body contains roughly $0.1\micro Ci$ of naturally occurring potassium-40.
Microfarad per Kilometre
Microfarad per Kilometer
0.000001-fold of the SI derived unit farad divided by the 1,000-fold of the SI base unit metre
Microfarad per Metre
Microfarad per Meter
0.000001-fold of the SI derived unit farad divided by the SI base unit metre
MicroGals per metre
A rate of change of one millionth part of a unit of gravitational acceleration equal to one centimetre per second per second over a distance of one metre.
Microgram per Gram per Day
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by 0.001-fold of SI base unit kilogram per day
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by 0.001-fold of the SI base unit kilogram per day (8640 seconds)
Micrograms per gram per hour
0.0000000001-fold of the SI base unit kilogram divided by 0.0001-fold of the SI base unit kilogram over a period of 1 hour
Micrograms per litre per hour
A rate of change of mass of a measurand equivalent to 10^-9 kilogram (the SI unit of mass) per litre volume of matrix over a period of 1 day.
Micrograms per litre hour
A rate of change of mass of a measurand equivalent to 10^-9 kilogram (the SI unit of mass) per litre volume of matrix over a period of 1 hour.
0.000000001-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
Micrograms per cubic metre hour
0.000000001-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
Microkatal per Litre
Microkatal per Liter
Microlitre per Litre
Microlitre per Liter
volume ratio as 0.000001-fold of the unit litre divided by the unit litre
Micrometre per Kelvin
Micrometer per Kelvin
0.000001-fold of the SI base unit metre divided by the SI base unit kelvin
0.000001-fold of the SI base unit metre divided by the SI base unit metre
Square microns per millilitre
Mikrometer pro Newton
Micro metre per Newton
Micro meter per Newton
Cubic microns per cubic metre
Cubic microns per millilitre
Micromoles per gram hour
Micromoles per gram second
Micromoles per kilogram
Micromoles per litre hour
Micromoles per square metre
One part per 10**6 (million) of the SI unit of quantity of matter (the mole) per SI unit area.
Micromoles per square metre day
Micromoles per square metre hour
Micromoles per square metre second
One part per 10**6 (million) of the SI unit of quantity of matter (the mole) per SI unit area per SI unit of time. This term is based on the number of photons in a certain waveband incident per unit time (s) on a unit area (m2) divided by the Avogadro constant (6.022 x 1023 mol-1). It is used commonly to describe PAR in the 400-700 nm waveband. Definition Source: Thimijan, Richard W., and Royal D. Heins. 1982. Photometric, Radiometric, and Quantum Light Units of Measure: A Review of Procedures for Interconversion. HortScience 18:818-822.
micromole per square metre per square second
micromole per square meter per square second
One part per 10**6 (million) of the SI unit of quantity of matter (the mole) per SI unit area per SI unit of time squared.
Micromoles per mole
Micromole per micromole of biomass day
Micromoles per second
This unit is used commonly to describe Photosynthetic Photon Flux (PPF) - the total number of photons emitted by a light source each second within the PAR wavelength range.
(micromole per metre squared per second) squared
NEON variance for a molar flux density, (uM/m^2/s)^2 .
0.000001-fold of the product out of the SI derived unit ohm and the SI base unit metre
Microsiemens per Metre
Microsiemens per Meter
0.000001-fold of the SI derived unit Siemens divided by the SI base unit metre
Microsiemen Squared Per Centimetre Squared
Microsiemen Squared Per Centimeter Squared
Conductivity variance, or (MicroS-PER-CentiM)2
MicroSievert per hour
0.000001-fold of the derived SI unit sievert divided by the unit hour
Microvolt per Metre
Microvolt per Meter
0.000001-fold of the SI derived unit volt divided by the SI base unit metre
Milliampere Hour per Gram
$\textit{Milliampere hour per gram}$ is a practical unit of electric charge relative to the mass of the (active) parts. 1mAh/g describes the capability of a material to store charge equivalent to 1h charge with 1mA per gram. The unit is often used in electrochemistry to describe the properties of active components like electrodes.
product of the 0.001-fold of the SI base unit ampere and the unit inch according to the Anglo-American and Imperial system of units with the exponent 2 according to the quotient of the unit pound-force according to the Anglo-American system of units
0.001-fold of the SI base unit ampere divided by the unit bar
0.001-fold of the SI base unit ampere divided by the SI base unit kelvin
0.001-fold of the SI base unit ampere divided by the product of the unit litre and the unit minute
product of the 0.001-fold of the SI base unit ampere according to the quotient of the unit pound-force according to the Anglo-American system of units divided by the power of the unit inch according to the Anglo-American and Imperial system of units with the exponent 2
Millibar per Bar
0.01-fold of the unit bar divided by the unit bar
Millibar per Kelvin
0.001-fold of the unit bar divided by the unit temperature kelvin
Millibecquerels per gram
One radioactive disintegration per thousand seconds per 1000th SI unit of sample mass.
Millibecquerels per kilogram
One radioactive disintegration per thousand seconds from an SI standard unit of mass of sample.
Millibecquerels per litre
One radioactive disintegration per second from the SI unit of volume (cubic metre). Equivalent to Becquerels per cubic metre.
Millibecquerels per square metre day
One radioactive disintegration per thousand seconds in material passing through an area of one square metre during a period of one day (86400 seconds).
Millicoulomb per Cubic Metre
Millicoulomb per Cubic Meter
0.001-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
Millicurie
Millidarcy
The $\textit{Millidarcy}$ ($md$) is a unit of permeability named after Henry Darcy. It is not an SI unit, but it is widely used in petroleum engineering and geology. The unit has also been used in biophysics and biomechanics, where the flow of fluids such as blood through capillary beds and cerebrospinal fluid through the brain interstitial space is being examined. A millidarcy has dimensional units of $length^2$.
The millidarcy (md) is a unit of permeability named after Henry Darcy. It is not an SI unit, but it is widely used in petroleum engineering and geology. The unit has also been used in biophysics and biomechanics, where the flow of fluids such as blood through capillary beds and cerebrospinal fluid through the brain interstitial space is being examined. A millidarcy has dimensional units of length².
Millifarad
MilliGals per month
A rate of change of one millionth part of a unit of gravitational acceleration equal to one centimetre per second per second over a time duration of 30.4375 days or 2629800 seconds.
milligram hour per litre cubic centimetre
quotient of the 0.000001-fold of the SI base unit kilogram per litre and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.000001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.000001-fold of the SI base unit kilogram per litre and unit litre per unit of time hour
milligram hour per cubic metre cubic centimetre
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per unit of time hour
milligram hour per power of metre with the exponent 6
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per unit of time hour
milligram minute per litre cubic centimetre
quotient of the 0.000001-fold of the SI base unit kilogram per litre and 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time minute
quotient of the 0.000001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per unit of time minute
quotient of the 0.000001-fold of the SI base unit kilogram per litre and unit litre per unit of time minute
milligram minute per cubic metre cubic centimetre
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time minute
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per unit of time minute
milligram minute per power of metre with the exponent 6
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per unit of time minute
0.000001-fold of the SI base unit kilogram divided by the unit bar
Milligram per Day
0.000001-fold of the SI base unit kilogram divided by the unit day
0.000001-fold of the SI base unit kilogram divided by the product out of the unit day and the unit bar
0.000001-fold of the SI base unit kilogram divided by the product out of the unit day and the SI base unit kelvin
Milligram per gram per hour
mass-specific rate, e.g., uptake or emission
0.000001-fold of the SI base unit kilogram divided by the 0.001-fold of the SI base unit kilogram, divided by 3600-fold of the SI base unit second
Milligram per Hour
0.000001-fold of the SI base unit kilogram divided by the unit hour
0.000001-fold of the SI base unit kilogram divided by the product out of the unit hour and the unit bar
0.000001-fold of the SI base unit kilogram divided by the product out of the unit hour and the SI base unit kelvin
0.000001-fold of the SI base unit kilogram divided by the SI base unit kelvin
Milligram per kilogram per Day
mass ratio as 0.000001-fold of the SI base unit kilogram divided by the SI base unit kilogram per day
[CGS] quotient of the 0.000001-fold of the SI base unit kilogram per litre and and the 0.01-fold of the CGS unit of the dynamic viscosity poise
quotient of the 0.000001-fold of the SI base unit kilogram per litre and the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
quotient of the 0.000001-fold of the SI base unit kilogram per litre and the product of the SI derived unit pascal and the SI base unit second
[CGS] quotient of the 0.000001-fold of the SI base unit kilogram per litre and the CGS unit of the dynamic viscosity poise
Milligram per Metre
Milligram per Meter
0.000001-fold of the SI base unit kilogram divided by the SI base unit metre
0.000001-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
[CGS] quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.01-fold of the CGS unit of the dynamic viscosity poise
Milligrams per cubic metre day
Milligrams per cubic metre hour
0.000001-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
milligram per cubic metre millipascal second
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the product of the SI derived unit pascal and the SI base unit second
[CGS] quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the CGS unit of the dynamic viscosity poise
Milligrams per cubic metre second
Milligram per Minute
0.000001-fold of the SI base unit kilogram divided by the unit minute
0.000001-fold of the SI base unit kilogram divided by the product out of the unit minute and the unit bar
0.000001-fold of the SI base unit kilogram divided by the product out of the unit minute and the SI base unit kelvin
Milligram per Second
0.000001-fold of the SI base unit kilogram divided by the SI base unit second
0.000001-fold of the SI base unit kilogram divided by the product out of the SI base unit second and the unit bar
0.000001-fold of the SI base unit kilogram divided by the product out of the SI base unit second and the SI base unit kelvin
milligram second per litre cubic centimetre
quotient of the 0.000001-fold of the SI base unit kilogram per litre and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per SI base unit second
quotient of the 0.000001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per SI base unit second
quotient of the 0.000001-fold of the SI base unit kilogram per litre and unit litre per SI base unit second
milligram second per cubic metre cubic centimetre
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per SI base unit second
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per SI base unit second
milligram second per power of metre with the exponent 6
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per SI base unit second
0.001-fold of SI base unit kelvin divided by the unit bar
0.001-fold of SI base unit kelvin divided by the SI base unit kelvin
Millikatal per Litre
Millikatal per Liter
0.001-fold of the unit litre divided by the unit bar
Millilitre per Square Centimetre Minute
Millilitre per Square Centimeter Minute
quotient of the 0.001-fold of the unit litre and the unit minute divided by the 0.0001-fold of the power of the SI base unit metre with the exponent 2
Millilitre per Square Centimetre Second
Millilitre per Square Centimeter Second
unit of the volume flow rate millilitre divided by second related to the transfer area as 0.0001-fold of the power of the SI base unit metre by exponent 2
0.001-fold of the unit litre divided by the product out of the unit day and the unit bar
0.001-fold of the unit litre divided by the product out of the unit day and the SI base unit kelvin
0.001-fold of the unit litre divided by the product out of the unit hour and the unit bar
0.001-fold of the unit litre divided by the product out of the unit hour and the SI base unit kelvin
Millilitre per Kelvin
0.001-fold of the unit litre divided by the SI base unit kelvin
Millilitre per Litre
Millilitre per Liter
volume ratio consisting of the 0.001-fold of the unit litre divided by the unit litre
Millilitres per square metre day
Millilitre per Cubic Metre
Millilitre per Cubic Meter
0.001-fold of the unit litre divided by the power of the SI base unit metre with the exponent 3
0.001-fold of the unit litre divided by the product out of the unit minute and the unit bar
0.001-fold of the unit litre divided by the product out of the unit minute and the SI base unit kelvin
0.001-fold of the unit litre divided by the product out of the SI base unit second and the unit bar
0.001-fold of the unit litre divided by the product out of the SI base unit second and the SI base unit kelvin
0.001-fold of the SI base unit metre divided by the unit bar
Millimetre per Kelvin
Millimeter per Kelvin
0.001-fold of the SI base unit metre divided by the SI base unit kelvin
0.001-fold of SI base unit metre divided by SI base unit metre
Millimetre Per Square Metre
Millimeter Per Square Meter
0,001-fold of the SI base unit meter divided by the power of the SI base unit metre with the exponent 2
Cubic Millimetre per Cubic Metre
Cubic Millimeter per Cubic Meter
volume ratio consisting of the 0.000000001-fold of the power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
Millimoles per square metre
Millimoles per square metre day
Millimole per Square Metre per Hour
Hourly molar flux equivalent to .001 moles per meter squared per hour, typically used to express an areal production (if plane is a surface of the earth or ocean).
Millimoles per square metre second
Millimoles per cubic metre day
Millimoles per mole
0.001-fold of the product of the SI derived unit ohm and the SI base unit metre
0.001-fold of the SI derived unit ohm per metrical non SI unit bar
0.001-fold of the SI derived unit ohm per SI base unit kelvin
0.001-fold of the SI derived unit ohm divided by the SI base unit metre
0.001-fold of the unit Osmol divided by the SI base unit kilogram
0.001-fold of the SI derived unit pascal divided by the SI base unit metre
product of the 0.001-fold of the SI derived unit pascal and the SI base unit second divided by the SI base unit Kelvin
Milliroentgen Equivalent Man
The roentgen equivalent man (or rem) is a CGS unit of equivalent dose, effective dose, and committed dose, which are measures of the health effect of low levels of ionizing radiation on the human body.
Millisiemens per Centimetre
Millisiemens per Centimeter
0.001-fold of the SI derived unit Siemens divided by the 0.01-fold of the SI base unit metre
MilliSiemens per metre
Millivolt per Metre
Millivolt per Meter
Millivolt per Minute
0.001-fold of the SI derived unit volt divided by the unit minute
0.001-fold of the SI derived unit volt per SI derived unit volt
Milliwatts per square centimetre micrometre steradian
Milliwatts per square metre nanometre
Milliwatts per square metre nanometre steradian
Newton metre per degree metre
Newtonmeter pro Meter
Newton metre per metre
Newton meter per meter
This is the SI unit for the rolling resistance, which is equivalent to drag force in newton
newton metre watt to the power minus 0.5
product of the SI derived unit newton and the SI base unit metre divided by the square root out of the SI derived unit watt
Newtonmetersekunden pro Radian
Newton metre seconds per radian
Newton meter seconds per radian
Newton metre seconds measured per radian
Newton Square Metre
Newton Square Meter
Newton Square Metre per Square Kilogram
Newton Square Meter per Square Kilogram
unit of gravitational constant as product of the derived SI unit newton, the power of the SI base unit metre with the exponent 2 divided by the power of the SI base unit kilogram with the exponent 2
Newton per Ampere
SI derived unit newton divided by the SI base unit ampere
Newton per Coulomb
Newton Per Coulomb ( N/C) is a unit in the category of Electric field strength. It is also known as newtons/coulomb. Newton Per Coulomb ( N/C) has a dimension of MLT-3I-1 where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. It essentially the same as the corresponding standard SI unit V/m.
Newton per Kilogram
Gravitational field strength at a point is the gravitational force per unit mass at that point. It is a vector and its S.I. unit is N kg-1.
Newtons per cubic metre
Newtonsekunden pro Meter
Newton Second per Metre
Newton Second per Meter
Newton second per Cubic Metre
Newton second per Cubic Meter
The SI unit of specific acoustic impedance. When sound waves pass through any physical substance the pressure of the waves causes the particles of the substance to move. The sound specific impedance is the ratio between the sound pressure and the particle velocity it produces. The specific impedance is $1 N \cdot s \cdot m^{-3}$ if unit pressure produces unit velocity.
Newtonsekunden pro Radian
Newton seconds per radian
Nat per Second
"Nat per Second" is information rate in natural units.
unit neper divided by the SI base unit second
Nephelometry Turbidity Unit
"Nephelometry Turbidity Unit" is a C.G.S System unit for 'Turbidity' expressed as $NTU$.
Number per square centimetre thousand years
Number per hectare
Count of an entity or phenomenon's occurrence in 10,000 times the SI unit area (square metre).
Number per Hectare Year
number divided by the unit hectare and by the unit year
Number per 100 grams
Count of an entity or phenomenon occurrence in one 10th of the SI unit of mass (kilogram).
Number per kilogram
Count of an entity or phenomenon's occurrence divided by SI base unit kilogram
Number per square kilometre
Number per square metre day
0.000000001-fold of the SI base unit ampere divided by the SI base unit kelvin
Nanobecquerels per litre
Nanofarad per Metre
Nanofarad per Meter
0.000000001-fold of the SI derived unit farad divided by the SI base unit metre
Nanogram per Day
Nanogram per Square Metre Pascal Second
Nanokatal per Litre
Nanokatal per Liter
Nanometer per Centimeter Megapascal
Nanometer per Centimeter PSI
Nanomoles per cubic centimetre hour
Nanomoles per gram per hour
10^-9 SI unit of the quantity of matter per SI unit of mass per unit of time expressed in hour (3,600 seconds).
Nanomoles per gram second
Nanomoles per kilogram
Nanomoles per litre day
Nanomoles per litre hour
Nanomoles per square metre day
Nanomole per Square Metre per second
Molar flux equivalent to 1e-9 moles per meter squared per sec.
Nanomoles per microgram hour
Nanomoles per micromole
Nanomoles per micromole day
0.000000001-fold of the product of the SI derived unit ohm and the SI base unit metre
Nanosiemens per Centimetre
Nanosiemens per Centimeter
0.000000001-fold of the SI derived unit Siemens by the 0.01 fol of the SI base unit metre
Nanosiemens per Metre
Nanosiemens per Meter
0.000000001-fold of the SI derived unit Siemens divided by the SI base unit metre
Oersted Centimetre
Oersted Centimeter
"Oersted Centimeter" is a C.G.S System unit for 'Magnetomotive Force' expressed as $Oe-cm$.
Ohm Centimetre
Ohm Centimeter
product of the SI derived unit ohm and the 0.01-fold of the SI base unit metre
Ohm Square Metre per Metre
Ohm Square Meter per Meter
SI derived unit ohm per metrical non SI unit bar
SI derived unit ohm per SI base unit kelvin
SI derived unit ohm divided by the 1,000-fold of the SI base unit metre
SI derived unit ohm divided by the SI base unit metre
unit ohm divided by the unit mile according to the Anglo-American system of units
Abohm
$\textit{abohm}$ is the basic unit of electrical resistance in the emu-cgs system of units. One abohm is equal to $10^{-9} ohms$ in the SI system of units; one abohm is a nano ohm.
Statohm
"StatOHM" is the unit of resistance, reactance, and impedance in the electrostatic C.G.S system of units, equal to the resistance between two points of a conductor when a constant potential difference of 1 statvolt between these points produces a current of 1 statampere; it is equal to approximately $8.9876 \times 10^{11} ohms$. The statohm is an extremely large unit of resistance. In fact, an object with a resistance of 1 stat W would make an excellent insulator or dielectric . In practical applications, the ohm, the kilohm (k W ) and the megohm (M W or M) are most often used to quantify resistance.
value of the quotient from two physical units of the same kind as a numerator and denominator whereas the units are shortened mutually
Ounce (avoirdupois) Foot
unit of the unbalance as a product of avoirdupois ounce according to the avoirdupois system of units and foot according to the Anglo-American and Imperial system of units
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
ounce square foot per cubic inch pound-force second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time hour
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time hour
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
ounce hour per power of inch with the exponent 6
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
Ounce (avoirdupois) Inch
unit of the unbalance as a product of avoirdupois ounce according to the avoirdupois system of units and inch according to the Anglo-American and Imperial system of units
ounce square inch per cubic inch pound-force second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time minute
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time minute
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
ounce minute per power of inch with the exponent 6
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
Ounce (avoirdupois) per Day
traditional unit of the mass avoirdupois ounce according to the avoirdupois system of units divided by the unit for time day
Ounce (avoirdupois) per Hour
traditional unit of the mass avoirdupois ounce according to the avoirdupois system of units divided by the unit for time hour
Ounce (avoirdupois) per Minute
traditional unit of the mass avoirdupois ounce according to the avoirdupois system of units divided by the unit for time minute
Ounce (avoirdupois) per Second
traditional unit of the mass avoirdupois ounce according to the avoirdupois system of units divided by the SI base unit second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per SI base unit second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per SI base unit second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
ounce second per power of inch with the exponent 6
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
unit of specific weight according to the Anglo-American system of units
Pascal metres
Pascal metres per second
Pascal metres per square second
Pascal Square Root Metre
Pascal Square Root Meter
A metric unit for stress intensity factor and fracture toughness.
unit of the burst index as derived unit for pressure pascal related to the substance, represented as a quotient from the SI base unit kilogram divided by the power of the SI base unit metre by exponent 2
Pascal per Bar
SI derived unit pascal divided by the unit bar
Pascal per Hour
A rate of change of pressure measured as the number of Pascals in a period of one hour.
Pascal per Kelvin
Pascal per Metre
Pascal per Meter
SI derived unit pascal divided by the SI base unit metre
Pascal per Minute
A rate of change of pressure measured as the number of Pascals in a period of one minute.
Pascal per Second
A rate of change of pressure measured as the number of Pascals in a period of one second.
product out of the SI derived unit pascal and the SI base unit second divided by the SI base unit kelvin
product of the SI derived unit pascal and the SI base unit second divided by the unit litre
باسكال ثانية لكل متر مكعب
pascal sekunda na metr krychlový
Pascalsekunde je Kubikmeter
pascal second per cubic metre
Pascal Second per Cubic Meter
pascal segundo por metro cúbico
نیوتون ثانیه بر متر مکعب
pascal-seconde par mètre cube
पास्कल सैकण्ड प्रति घन मीटर
pascal per secondo al metro cubo
パスカル秒毎立方メートル
pascal saat per meter kubik
paskalosekunda na metr sześcienny
pascal-segundo por metro cúbico
pascal-secundă pe metru cub
паскаль-секунда на кубический метр
pascal saniye bölü metre küp
$\textit{Pascal Second Per Cubic Meter}$ ($Pa-s/m^3$) is a unit in the category of Acoustic impedance. It is also known as $\textit{pascal-second/cubic meter}$. It has a dimension of $ML^{-4}T^{-1}$ where $M$ is mass, $L$ is length, and $T$ is time. This unit is the standard SI unit in this category.
Square pascal per square second
Square Pascal Second
Square Pascal Second ($Pa^2\cdot s$) is a unit in the category of sound exposure.
reciprocal degree Celsius
Unit for expressing the change of some quantity relative to a unit change in temperature.
reciprocal electron volt per cubic metre
complement of the unit for atomic energy electronvolt related to the power of the SI base unit metre by exponent 3
Reciprocal Square Electron Volt
Per Square Electron Volt is a denominator unit with dimensions $/eV^2$.
Reciprocal Square Giga Electron Volt Unit
Per Square Giga Electron Volt Unit is a denominator unit with dimensions $/GeV^2$.
Reciprocal Henry
complement of the unit inch according to the Anglo-American and Imperial system of units
complement of the power of the unit inch according to the Anglo-American and Imperial system of units by exponent 2
Reciprocal Joule Cubic Metre
Reciprocal Joule Cubic Meter
unit of the density of states as a reciprocal of the derived unit joule related to the power of the SI base unit metre by exponent 3
Reciprocal Square Joule
Per Square Joule is a denominator unit with dimensions $/eV^2$.
product of SI base units kilogram to the power of minus one and second to the power of minus one given as dimensional product dim Q = L**$a} M**$b} T**$g} I**$d} $TH**$e} N**$z} J**$i}
Reciprocal Square Kilogram
Per Square Kilogram is a denominator unit with dimensions $/kg^2$.
reciprocal of the unit pound (avoirdupois)
Reciprocal Metre Kelvin
Reciprocal Meter Kelvin
Per Meter Kelvin Unit is a denominator unit with dimensions $/m.k$.
Reciprocal metre per nanometre
Reciprocal metre nanometre steradian
Reciprocal metre per second
Reciprocal metre per steradian
Reciprocal Mole
The $\textit{Per Mole Unit}$ is a denominator unit with dimensions $mol^{-1}$ .
Reciprocal micromole per litre
Units used to describe the sensitivity of detection of a spectrophotometer.
reciprocal of the unit ounce (avoirdupois)
Reciprocal Pascal per second
Inverse Square Planck Mass
In physics, the Planck mass, denoted by $m_P$, is the unit of mass in the system of natural units known as Planck units. It is defined so that $\approx 1.2209 \times 10 GeV/c_0 = 2.17651(13) \times 10 kg$, (or $21.7651 \mu g$), where $c_0$ is the speed of light in a vacuum, $G$ is the gravitational constant, and $\hbar$ is the reduced Planck constant. Particle physicists and cosmologists often use the reduced Planck mass, which is $\approx 4.341 \times 10 kg = 2.435 \times 10 GeV/c$. The added factor of $1/{\sqrt{8\pi}}$ simplifies a number of equations in general relativity. Quantum effects are typified by the magnitude of Planck's constant.
$m_P = \sqrt{\frac{ \hbar c^3}{G}} \approx 1.2209 \times 10^{19} GeV/c^2 = 2.17651(13) \times 10^{-8}$, where $c$ is the speed of light in a vacuum, $\hbar$ is the reduced Planck's constant, and $G$ is the gravitational constant. The two digits enclosed by parentheses are the estimated standard error associated with the reported numerical value.
Reciprocal Second Square Metre
Reciprocal Second Square Meter
$\textit{Per Second Square Meter}$ is a measure of flux with dimensions $/sec-m^2$.
Reciprocal Second Square Metre Steradian
Reciprocal Second Square Meter Steradian
Per Second Square Meter Steradian is a denominator unit with dimensions $/sec-m^2-sr$.
It is not clear this unit is ever used. [Editor]
reciprocal of the SI base unit second divided by the power of the SI base unit metre with the exponent 3
reciprocal second per steradian square metre
reciprocal of the SI base unit second divided by the product of the SI derived unit steradian and the power of the SI base unit metre and te exponent 2
Reciprocal square second
Reciprocal steradian
Reciprocal Tesla Metre
Reciprocal Tesla Meter
A $\textit{Per Tesla Meter Unit}$ is a denominator unit with dimensions $/m .\cdot T$.
reciprocal of the 2,000-fold of the SI base unit pound
reciprocal of the 1,000-fold of the SI base unit kilogram
Reciprocal Weber
complement of the SI derived unit weber as unit of the Josephson constant, which value is equal to the 384,597,891-fold of the reference value gigahertz divided by volt
percent foot hour per pound (avoirdupois)
hundredth relating to the quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units and the product of the units foot and unit for time hour
percent foot second per pound (avoirdupois)
hundredth relating to the quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units and the product of the units foot and SI base unit second
percent square foot per pound-force second
hundredth relating to the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second and power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
hundredth relating to the quotient of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the unit for time hour
hundredth relating to the quotient of power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time hour
hundredth relating to the quotient of the unit gallon (UK) according to the Imperial system of units and the unit for time hour
hundredth relating to the quotient of the unit gallon (US) according to the Anglo-American system of units and the unit for time hour
hundredth relating to the quotient of power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time hour
hundredth relating to the quotient of the unit litre and the unit for time hour
hundredth relating to the quotient of the power of the SI base unit metre with the exponent 3 and the unit for time hour
hundredth relating to the quotient of power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time hour
percent square inch per pound-force second
hundredth relating to the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second and power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
hundredth relating to the quotient of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the unit for time minute
hundredth relating to the quotient of power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time minute
hundredth relating to the quotient of the unit gallon (UK) according to the Imperial system of units and the unit for time minute
hundredth relating to the quotient of the unit gallon (US) according to the Anglo-American system of units and the unit for time minute
hundredth relating to the quotient of power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time minute
hundredth relating to the quotient of the unit litre and the unit for time minute
hundredth relating to the quotient of the power of the SI base unit metre with the exponent 3 and the unit for time minute
hundredth relating to the quotient of power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time minute
[CGS] hundredth relating to the 0.01-fold of the unit of the dynamic viscosity poise
hundredth divided by the unit degree Celsius
hundredth relating to the 10-fold of the SI base unit Kelvin
hundredths relating to the 100-fold of unit bar
hundredth divided by the unit inch according to the Anglo-American and the Imperial system of units
hundredth divided by the SI base unit kelvin
Percent per metre
hundredth relating to the SI base unit metre
hundredth relating to the 0.001-fold of the SI base unit metre
hundredth relating to the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
hundredth relating to the product of the SI derived unit pascal and the SI base unit second
[CGS] hundredth relating to the unit of the dynamic viscosity poise
hundredth relating to the quotient of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit second
hundredth relating to the quotient of power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the SI base unit second
hundredth relating to the quotient of the unit gallon (UK) according to the Imperial system of units and the SI base unit second
hundredth relating to the quotient of the unit gallon (US) according to the Anglo-American system of units and the SI base unit second
hundredth relating to the quotient of power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the SI base unit second
hundredth relating to the quotient of the unit litre and the SI base unit second
hundredth relating to the quotient of the power of the SI base unit metre with the exponent 3 and the SI base unit second
hundredth relating to the quotient of power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 and the SI base unit second
Percent Relative Humidity
Percent relative humidity is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature, expressed as a percentage.
Relative Electromagnetic Permeability
Relative permeability, denoted by the symbol $\mu _T$, is the ratio of the permeability of a specific medium to the permeability of free space $\mu _0$
Relative Permeability
In multiphase flow in porous media, the relative permeability of a phase is a dimensionless measure of the effective permeability of that phase. It is the ratio of the effective permeability of that phase to the absolute permeability. It can be viewed as an adaptation of Darcy's law to multiphase flow. For two-phase flow in porous media given steady-state conditions, we can write where is the flux, is the pressure drop, is the viscosity.
Metric Perm
A perm is a unit of permeance or "water vapor transmission" given a certain differential in partial pressures on either side of a material or membrane. The metric perm (not an SI unit) is defined as 1 gram of water vapor per day, per square metre, per millimeter of mercury.
U.S. Perm
A perm is a unit of permeance or "water vapor transmission" given a certain differential in partial pressures on either side of a material or membrane. The U.S. perm is defined as 1 grain of water vapor per hour, per square foot, per inch of mercury.
psychoacoustical unit for the loudness level, to describe the emotionally sense of the sound level, with which a human will understand an acoustic noise event as an hearing event
US Dry Pint
"US Dry Pint" is a C.G.S System unit for 'Dry Volume' expressed as $dry_pt$.
both, the smallest unit of a digital raster graphic as well as the display on a screen with raster control
[CGS] unit poise divided by the SI base unit kelvin
compound unit for pressure (pound-force according to the Anglo-American unit system divided by the power of the unit inch according to the Anglo-American and Imperial system of units with the exponent 2) divided by the unit inch according to the Anglo-American and Imperial system of units
Psi per Psi
composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)
1,125,899,906,842,624-fold of the unit bit divided by the SI base unit metre
1,125,899,906,842,624-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,125,899,906,842,624-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
1,000,000,000,000,000-fold of the unit bit divided by the SI base unit second
1,000,000,000,000,000-fold of the unit becquerel
petafloating point operations per second
1,000,000,000,000,000-fold of the unit floating point operations divided by the SI base unit second
0.000000000001-fold of the SI base unit ampere divided by the 100-fold of the SI derived unit pascal
Picoamps per micromole litre
Picofarad per Metre
Picofarad per Meter
0.000000000001-fold of the SI derived unit farad divided by the SI base unit metre
Picokatal per Litre
Picokatal per Liter
Picomoles per kilogram
Picomoles per litre day
A change in the quantity of matter of 10^-12 moles in the SI unit of volume scaled by 10^-3 over a period of 86400 seconds.
Picomoles per litre hour
A change in the quantity of matter of 10^-12 moles in the SI unit of volume scaled by 10^-3 over a period of 3600 seconds.
Picomoles per metre watt second
Picomoles per square metre day
Picomoles per cubic metre second
Picopascal per Kilometre
Picopascal per Kilometer
0.000000000001-fold of the SI derived unit pascal divided by the 1 000-fold of the SI base unit metre
Picosiemens per Metre
Picosiemens per Meter
0.000000000001-fold of the SI derived unit Siemens divided by the SI base unit metre
Picowatts per square centimetre litre
The power (scaled by 10^-12) per SI unit of area (scaled by 10^-4) produced per SI unit of volume (scaled by 10^-3).
Planck Current Density
Planck Impedance
The Planck impedance is the unit of electrical resistance, denoted by ZP, in the system of natural units known as Planck units. The Planck impedance is directly coupled to the impedance of free space, Z0, and differs in value from Z0 only by a factor of $4\pi$. If the Planck charge were instead defined to normalize the permittivity of free space, $\epsilon_0$, rather than the Coulomb constant, $1/(4\pi\epsilon_0)$, then the Planck impedance would be identical to the characteristic impedance of free space.
$Z_P = \frac{V_P}{I_P}= \frac{1}{4\pi\epsilon_0c}=\frac{\mu_oc}{4\pi}=\frac{Z_0}{4\pi}=29.9792458\Omega$\where $V_P$ is the Planck voltage, $I_P$ is the Planck current, $c$ is the speed of light in a vacuum, $\epsilon_0$ is the permittivity of free space, $\mu_0$ is the permeability of free space, and $Z_0$ is the impedance of free space.
US Dry Quart
"US Dry Quart" is a unit for 'Dry Volume' expressed as $dry_qt$.
unit roentgen, the use of which is no longer permitted divided by the SI base unit second
Radian Square Metre per Kilogram
Radian Square Meter per Kilogram
Radian Square Metre per Mole
Radian Square Meter per Mole
Radian per Square Second
Angular acceleration is the rate of change of angular velocity. In SI units, it is measured in radians per Square second ($rad/s^2$), and is usually denoted by the Greek letter $\alpha$.
Rayl
The $Rayl$ is one of two units of specific acoustic impedance. When sound waves pass through any physical substance the pressure of the waves causes the particles of the substance to move. The sound specific impedance is the ratio between the sound pressure and the particle velocity it produces. The specific impedance is one rayl if unit pressure produces unit velocity. It is defined as follows: $1\; rayl = 1 dyn\cdot s\cdot cm^{-3}$ Or in SI as: $1 \; rayl = 10^{-1}Pa\cdot s\cdot m^{-1}$, which equals $10\,N \cdot s\cdot m^{-3}$.
Revolution per Minute per Second
Revolution per Minute per Second is a unit for Angular Acceleration (sometimes called Change of RPM, crpm)
Revolution per Square Second
"Revolution per Square Second" is a C.G.S System unit for 'Angular Acceleration' expressed as $rev-per-s^2$.
non SI-conforming unit of fluidity of dynamic viscosity
unit Richter magnitude expressing size of an earthquake in accordance to a specific scale
Siemens Square metre per mole
Siemens Square meter per mole
Siemens per Centimetre
Siemens per Centimeter
SI derived unit Siemens divided by the 0.01-fold of the SI base unit metre
Standard Cubic Foot per Hour
The $\textit{standard cubic foot per hour}$ (scfm) is the molar flow rate of a gas (such as natural gas) contained in a volume of one cubic foot at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic foot per minute are 60 degrees Fahrenheit and 14.7 pounds per square inch (psi) of pressure.
Standard Cubic Foot per Minute
The $\textit{standard cubic foot per minute}$ (scfm) is the molar flow rate of a gas (such as natural gas) contained in a volume of one cubic foot at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic foot per minute are 60 degrees Fahrenheit and 14.7 pounds per square inch (psi) of pressure.
Standard Cubic Metre per Hour
Standard Cubic Meter per Hour
The $\textit{standard cubic metre per hour}$ (scmh) is the molar flow rate of a gas (such as natural gas) contained in a volume of one cubic metre at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic metre per minute are 0 degrees Celsius and 101.325 kilopascals (kPa) of pressure.
Standard Cubic Metre per Minute
Standard Cubic Meter per Minute
The $\textit{standard cubic metre per minute}$ (scmm) is the molar flow rate of a gas (such as natural gas) contained in a volume of one cubic metre at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic metre per minute are 0 degrees Celsius and 101.325 kilopascals (kPa) of pressure.
Second Square Foot
"Second Square Foot" is an Imperial unit for 'Area Time' expressed as $s-ft^{2}$.
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
unit of the Einstein transition probability for spontaneous or inducing emissions and absorption according to ISO 80000-7:2008, expressed as SI base unit second divided by the SI base unit kilogramm
unit of the spectral density of the vibration methods as SI base unit second divided by the power of the SI base unit metre with the exponent 3 and the unit radian
Second per Radian Cubic Metre
Second per Radian Cubic Meter
Square Second
"Square Second" is a unit for 'Square Time' expressed as $s^{2}$.
Shannon per Second
The "Shannon per Second" is a unit of information rate.
Slug per Day
unit slug for mass according to an English engineering system divided by the unit day
Slug per Foot
"Slug per Foot" is an Imperial unit for 'Mass Per Length' expressed as $slug/ft$.
Slug per Hour
unit slug for mass slug according to the English engineering system divided by the unit hour
Slug per Minute
unit slug for the mass according to the English engineering system divided by the unit minute
psycho-acoustical unit for the subjective loudness of a tone, whereby the loudness 1 sone is allocated to the loudness level 40 phon
the sunprotection factor is a dimensionless value expressing the required amount of protection against solar radiation
dimensionless atomic value expressing a system’s spin
[CGS] unit stokes divided by the unit bar
[CGS] unit stokes divided by the SI base unit kelvin
[CGS] unit stokes divided by the SI derived unit pascal
Stilb
The $\textit{stilb (sb)}$ is the CGS unit of luminance for objects that are not self-luminous. It is equal to one candela per square centimeter or 10 nits (candelas per square meter). The name was coined by the French physicist A. Blondel around 1920. It comes from the Greek word stilbein meaning 'to glitter'. It was in common use in Europe up to World War I. In North America self-explanatory terms such as candle per square inch and candle per square meter were more common. The unit has since largely been replaced by the SI unit: $\textit{candela per square meter}$.
Absiemen
The CGS electromagnetic unit of conductance; one absiemen is the conductance at which a potential of one abvolt forces a current of one abampere; equal to $10^{9}$ siemens. One siemen is the conductance at which a potential of one volt forces a current of one ampere and named for Karl Wilhem Siemens.
T-M
T-SEC
Tex
Tex is a unit of measure for the linear mass density of fibers and is defined as the mass in grams per 1000 meters. Tex is more likely to be used in Canada and Continental Europe, while denier remains more common in the United States and United Kingdom. The unit code is 'tex'. The most commonly used unit is actually the decitex, abbreviated dtex, which is the mass in grams per 10,000 meters. When measuring objects that consist of multiple fibers the term 'filament tex' is sometimes used, referring to the mass in grams per 1000 meters of a single filament. Tex is used for measuring fiber size in many products, including cigarette filters, optical cable, yarn, and fabric.
unit ton divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
unit of the mass ton (US, short) according to the Anglo-American system of units divided by the traditional unit degree Fahrenheit
unit of the mass ton (US, short) according to the Anglo-American system of units divided by the product of the unit hour for time and the traditional unit degree Fahrenheit
quotient unit for mass ton (US, short) according to the Anglo-American system of units divided by the unit for time hour divided by the composed unit for pressure (pound-force per square inch)
unit for mass ton (US, short) according to the Anglo-American system of units divided by the composed unit for pressure (pound-force per square inch)
Long Ton (uk) per Day
unit British ton according to the Imperial system of units divided by the unit day
Short Ton (us) per Day
unit American ton according to the Anglo-American system of units divided by the unit day
[CGS] unit of the pressure divided by the SI base unit metre
1,099,511,627,776-fold of the unit bit divided by the SI base unit metre
1,099,511,627,776-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,099,511,627,776-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
1,000,000,000,000-fold of the unit bit divided by the SI base unit second
1,000,000,000,000-fold of the unit becquerel
terafloating point operations per second
1,000,000,000,000-fold of the unit floating point operations divided by the SI base unit second
Teraohm
1,000,000,000,000-fold of the SI derived unit ohm
Unknown
Placeholder unit for abstract quantities
differentiated SI unit volt divided by the composed unit for pressure (pound-force per square inch)
V-M
SI derived unit volt divided by the unit bar
Volt per Centimetre
Volt per Centimeter
derived SI unit volt divided by the 0.01-fold of the SI base unit metre
Volt per Inch
SI derived unit volt divided by the unit inch according to the Anglo-American and the Imperial system of units
SI derived unit volt divided by the the product of the unit litre and the unit minute
Volt per Square Metre
Volt per Square Meter
$\textit{Volt per Square Metre}$ is the divergence at a particular point in a vector field is (roughly) how much the vector field 'spreads out' from that point. Operationally, we take the partial derivative of each of the field with respect to each of its space variables and add all the derivatives together to get the divergence. $\textit{Electric field}$ ($V/m$) differentiated with respect to distance ($m$) yields $V/(m^2)$.
Volt per Microsecond
SI derived unit volt divided by the 0.000001-fold of the SI base unit second
Volt per Millimetre
Volt per Millimeter
SI derived unit volt divided by the 0.001-fold of the SI base unit metre
SI derived unit volt divided by the SI derived unit pascal
Volt per second
'Volt per Second' is a unit of magnetic flux equaling one weber. This is the flux passing through a conducting loop and reduced to zero at a uniform rate in one second inducing an electric potential of one volt in the loop.
SI derived unit volt per SI derived unit volt
Square Volt per Square Kelvin
V_Stat-CentiM
product of the SI derived unit watt and the unit hour divided by the unit litre
Watt metre per square metre steradian
The power per unit area of radiation of a given wavenumber illuminating a target at a given incident angle.
W-M2
product of the SI derived unit watt and the power of the SI base unit metre with the exponent 2
W-M2-PER-SR
Watt per Kelvin
Watt Per Kelvin ($W/K$) is a unit in the category of Thermal conductivity.
Watts per metre
SI derived unit watt divided by the SI base unit metre
SI derived unit watt divided by the product of the SI base unit metre and the unit for temperature degree Celsius
Watt per Metre Kelvin
Watt per Meter Kelvin
Watt per Square Metre Quartic Kelvin
Watt per Square Meter Quartic Kelvin
Watt Per Square Meter Per Quartic Kelvin ($W/m2\cdotK4)$ is a unit in the category of light.
Watts per square metre metre
Watts per square metre metre steradian
Watts per square metre nanometre
Watts per square metre nanometre steradian
Watt per Square Metre Pascal
Watt per Square Meter Pascal
Watt Per Square Meter Per Pascal ($W/m^2-pa$) is a unit of Evaporative Heat Transfer.
Watt per Cubic Metre
Watt per Cubic Meter
SI derived unit watt divided by the power of the SI base unit metre with the exponent 3
Watt per Steradian
$\textit{Watt Per Steradian (W/sr)}$ is the unit in the category of Radiant intensity. It is also known as watts per steradian. This unit is commonly used in the SI unit system. Watt Per Steradian (W/sr) has a dimension of $M\cdot L^{-2}\cdot T^{-3}$ where $M$ is mass, $L$ is length, and $T$ is time. This unit is the standard SI unit in this category.
weberů na metr
Weber je Meter
weber per metre
Weber per Meter
weber por metro
وبر بر متر
weber par mètre
प्रति मीटर वैबर
weber al metro
ウェーバ毎メートル
weber per meter
weber na metr
weber pe metru
вебер на метр
weber bölü metre
韦伯每米
SI derived unit weber divided by the SI base unit metre
Weber per Millimetre
Weber per Millimeter
derived SI unit weber divided by the 0.001-fold of the SI base unit metre
Yard per Degree Fahrenheit
unit yard according to the Anglo-American and the Imperial system of units divided by the unit for temperature degree Fahrenheit
unit yard according to the Anglo-American and the Imperial system of units divided by the composed unit for pressure (pound-force per square inch)
Cubic Yard per Degree Fahrenheit
power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for temperature degree Fahrenheit
power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the composed unit for pressure (pound-force per square inch)
atomic-number
In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus. It is conventionally represented by the symbol Z. The atomic number uniquely identifies a chemical element. In an atom of neutral charge, the atomic number is also equal to the number of electrons.
QUDT Quantity Kinds Vocabulary Catalog Entry v1.2
QUDT Quantity Kind Vocabulary Metadata Version 3.1.0
The QUDT Ontologies are issued under a Creative Commons Attribution 4.0 International License (CC BY 4.0), available at https://creativecommons.org/licenses/by/4.0/. Attribution should be made to QUDT.org
QUDT Quantity Kinds Version 3.1 Vocabulary
Provides a vocabulary of all quantity kinds.
QUDT Unit of Measure Vocabulary Metadata Version 3.1.0
This product includes all or a portion of the UCUM table, UCUM codes, and UCUM definitions or is derived from it, subject to a license from Regenstrief Institute, Inc. and The UCUM Organization. Your use of the UCUM table, UCUM codes, UCUM definitions also is subject to this license, a copy of which is available at ​http://unitsofmeasure.org. The current complete UCUM table, UCUM Specification are available for download at ​http://unitsofmeasure.org. The UCUM table and UCUM codes are copyright © 1995-2009, Regenstrief Institute, Inc. and the Unified Codes for Units of Measures (UCUM) Organization. All rights reserved. THE UCUM TABLE (IN ALL FORMATS), UCUM DEFINITIONS, AND SPECIFICATION ARE PROVIDED 'AS IS.' ANY EXPRESS OR IMPLIED WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Standard units of measure for all units.
has broader
has narrower
AED
AHU
Assembly consisting of sections containing a fan or fans and other necessary equipment to perform one or more of the following functions: circulating, filtration, heating, cooling, heat recovery, humidifying, dehumidifying, and mixing of air. Is usually connected to an air-distribution system.
Access Control Equipment
The integral of the active power over a time interval
Air Flow Deadband Setpoint
Sets the size of a deadband of air flow
Air Handler Unit
Air Pressure Sensor
Measures the pressure of the surrounding air.
Air Pressure Setpoint
Air System
The equipment, distribution systems and terminals that introduce or exhaust, either collectively or individually, the air into and from the building
Air Wet Bulb Temperature Sensor
Apparent Energy
The integral of the apparent power over a time interval
Audio Visual Equipment
Equipment related to sound and visual components such as speakers and displays.
Average Discharge Air Flow Sensor
The computed average flow of discharge air over some interval
BACnet Controller
Blowdown Water
Water expelled from a system to remove mineral build up
Breakroom
A space for people to relax while not working
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:StaffRoom
CAV
Carbon Monoxide in the vapor phase
CO2
Carbon Dioxide in the vapor phase
CO2 Alarm
An alarm that indicates the off-normal conditions associated with the presence of carbon dioxide.
CO2 Level Sensor
Measures the concentration of CO2 in air
CO2 Setpoint
Sets some property of CO2
CRAC
CRAH
a computer room air handler (CRAH) uses fans, cooling coils and a water-chiller system to remove heat.
Camera
Check Valve
Valve that allows fluid to flow in only one direction, preventing reverse flow.
Chilled Water Differential Pressure Load Shed Status
Chilled Water Differential Pressure Setpoint
Sets the target water differential pressure between an upstream and downstream point in a water pipe or conduit used to carry chilled water
Chilled Water Meter
A meter that measures the usage or consumption of chilled water
Circuit Breaker
A circuit breaker is a safety device to prevent damage to devices in a circuit, such as electric motors, and wiring when the current flowing through the electrical circuit supersedes its design limits. It does this by removing the current from a circuit when an unsafe condition arises. Unlike a switch, a circuit breaker automatically does this and shuts off the power immediately.
Cold Deck
Part of a dual duct air handling unit that supplies cooling to a building
Conductivity Sensor
Measures electrical conductance
Cooling Demand Sensor
Measures the amount of power consumed by a cooling process; typically found by multiplying the tonnage of a unit (e.g. RTU) by the efficiency rating in kW/ton
Cooling Discharge Air Temperature Deadband Setpoint
Sets the size of a deadband of temperature of cooling discharge air
Cooling Discharge Air Temperature Integral Time Parameter
Cooling Discharge Air Temperature Proportional Band Parameter
Current Imbalance
The percent deviation from average current
Cycle Alarm
An alarm that indicates off-normal conditions associated with HVAC cycles
DOAS
See Dedicated_Outdoor_Air_System_Unit
Damper Command
Controls properties of dampers
Daylight Sensor Equipment
Delay Parameter
A parameter determining how long to delay a subsequent action to take place after a received signal
Differential Dry Bulb Temperature
Differential Dynamic Pressure
Differential Pressure Step Parameter
Differential Static Pressure
Direction Sensor
Measures the direction in degrees in which a phenomenon is occuring
Direction Status
Indicates which direction a device is operating in
Discharge Air Dewpoint Sensor
Measures dewpoint of discharge air
Discharge Air Differential Pressure Sensor
Discharge Air Differential Pressure Setpoint
Discharge Air Duct Pressure Status
Indicates if air pressure in discharge duct is within expected bounds
Discharge Air Flow Demand Setpoint
Sets the rate of discharge air flow required for a process
Discharge Air Flow High Reset Setpoint
Discharge Air Flow Low Reset Setpoint
Discharge Air Flow Reset Setpoint
Setpoints used in Reset strategies
Discharge Air Flow Sensor
Measures the rate of flow of discharge air
Discharge Air Flow Setpoint
Sets discharge air flow
Discharge Air Humidity Sensor
Measures the relative humidity of discharge air
Discharge Air Humidity Setpoint
Humidity setpoint for discharge air
Discharge Air Integral Gain Parameter
Discharge Air Plenum
Discharge Air Proportional Gain Parameter
Discharge Air Smoke Detection Alarm
Discharge Air Static Pressure Deadband Setpoint
Sets the size of a deadband of static pressure of discharge air
Discharge Air Static Pressure Integral Time Parameter
Discharge Air Static Pressure Proportional Band Parameter
Discharge Air Static Pressure Sensor
The static pressure of air within discharge regions of an HVAC system
Discharge Air Static Pressure Step Parameter
Discharge Air Temperature Alarm
An alarm that indicates the off-normal conditions associated with the temperature of discharge air.
Discharge Air Temperature Deadband Setpoint
Sets the size of a deadband of temperature of discharge air
Discharge Air Temperature High Reset Setpoint
Discharge Air Temperature Low Reset Setpoint
Discharge Air Temperature Proportional Band Parameter
Discharge Air Temperature Reset Differential Setpoint
Discharge Air Temperature Sensor
Measures the temperature of discharge air
Discharge Air Temperature Setpoint Limit
A parameter that places a lower or upper bound on the range of permitted values of a Discharge_Air_Temperature_Setpoint.
Discharge Air Temperature Step Parameter
Discharge Air Velocity Pressure Sensor
Discharge Fan
Fan moving air discharged from HVAC vents
Discharge Hot Water Temperature Setpoint
Domestic Hot Water
The temperature of air measured by a thermometer freely exposed to the air, but shielded from radiation and moisture. (https://en.wikipedia.org/wiki/Dry-bulb_temperature)
ESS Panel
See Embedded_Surface_System_Panel
EV Charging Hub
Effective Cooling Zone Air Temperature Setpoint
The effective cooling setpoint for a specific zone in a building.
Effective Discharge Air Temperature Setpoint
Effective Heating Zone Air Temperature Setpoint
The effective heating setpoint for a specific zone in a building.
Effective Target Zone Air Temperature Setpoint
Target Setpoint (also known as Common Setpoint) is a reference point representing the desired air temperature in a specific zone of a building. This setpoint acts as a baseline from which the cooling and heating setpoints are established by adding or subtracting a deadband width
Electric Energy Sensor
Electric Radiator
Electric heating device
Electrical Meter
A meter that measures the usage or consumption of electricity
Electrical System
Devices that serve or are part of the electrical subsystem in the building
Elevator Space
The vertical space in whcih an elevator ascends and descends
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:ElevatorShaft
Embedded Temperature Sensor
Measures the internal temperature of the radiant layer of the radiant heating and cooling HVAC system.
Embedded Temperature Setpoint
Sets temperature for the internal material, e.g. concrete slab, of the radiant panel.
Emergency Alarm
Alarms that indicate off-normal conditions associated with emergency systems
Enable Status
Indicates if a system or piece of functionality has been enabled
Energy Generation System
A collection of devices that generates electricity
Energy Storage
Devices or equipment that store energy in its various forms
Energy Storage System
A collection of devices that stores electricity
Entering Chilled Water Flow Sensor
Measures the rate of flow of chilled entering water
Entering Chilled Water Temperature Sensor
Measures the temperature of chilled water that is enteringed to a cooling tower
Entering Chilled Water Temperature Setpoint
Sets the temperature of entering (downstream of the chilled water load) chilled water
Entering Condenser Water Flow Sensor
Measures the flow of the entering condenser water
Entering Condenser Water Temperature Sensor
Measures the temperature of the entering condenser water
Entering Condenser Water Temperature Setpoint
The temperature setpoint for the entering condenser water
Entering High Temperature Hot Water Temperature Sensor
Measures the temperature of high-temperature hot water enteringed to a hot water system
Entering Hot Water Flow Sensor
Measures the rate of flow of hot entering water
Entering Hot Water Temperature High Reset Setpoint
Entering Hot Water Temperature Load Shed Status
Entering Hot Water Temperature Low Reset Setpoint
Entering Hot Water Temperature Setpoint
Sets the temperature of entering (downstream of the hot water load) hot water
Entering Medium Temperature Hot Water Temperature Sensor
Measures the temperature of medium-temperature hot water entering a hot water system
Entering Water Temperature Sensor
Measures the temperature of entering water
Enthalpy Sensor
Measures the total heat content of some substance
Ethernet Port
Ethernet Switch
Exhaust Air Flow Integral Time Parameter
Exhaust Air Flow Proportional Band Parameter
Exhaust Air Flow Sensor
Measures the rate of flow of exhaust air
Exhaust Air Flow Setpoint
Sets exhaust air flow rate
Exhaust Air Stack Flow Setpoint
Sets exhaust air stack flow rate
Exhaust Fan
Fan moving exhaust air -- air that must be removed from a space due to contaminants
FCU
See Fan_Coil_Unit
Fan Command
Controls properties of fans
Fan Status
Indicates properties of fans
Filter Status
Indicates if a filter needs to be replaced
Food Service Room
A space used in the production, storage, serving, or cleanup of food and beverages
Frequency Sensor
Measures the frequency of a phenomenon or aspect of a phenomenon, e.g. the frequency of a fan turning
Fuel Oil
Petroleum based oil burned for energy
Furniture
Movable objects intended to support various human activities such as seating, eating and sleeping
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Furniture
Gas Meter
A meter that measures the usage or consumption of gas
Gas Valve
Gasoline
Petroleum derived liquid used as a fuel source
Gateway
Generation Sensor
A sensor measuring how much something has been generated.
Glycol
HVAC System
See Heating_Ventilation_Air_Conditioning_System
See Heat_Exchanger
Heating Demand Sensor
Measures the amount of power consumed by a heating process; typically found by multiplying the tonnage of a unit (e.g. RTU) by the efficiency rating in kW/ton
Heating Discharge Air Temperature Deadband Setpoint
Sets the size of a deadband of temperature of heating discharge air
Heating Discharge Air Temperature Integral Time Parameter
Heating Discharge Air Temperature Proportional Band Parameter
High Discharge Air Temperature Alarm
An alarm that indicates that discharge air temperature is too high
Horizontal Fan Coil Unit
Hot Deck
Part of a dual duct air handling unit that supplies heating to a building
Hot Water Circulator Pump
Used to move hot water in a closed circuit, ensuring continuous flow.
Hot Water Differential Pressure Load Shed Status
Hot Water Meter
A meter that measures the usage or consumption of hot water
Hot Water Radiator
Radiator that uses hot water
Hot Water System Enable Command
Enables operation of the hot water system
IAQ Sensor Equipment
ICT Rack
Ice
Water in its solid form
Illuminance Sensor
Measures the total luminous flux incident on a surface, per unit area
Inverter
A device that changes direct current into alternating current
Isolation Valve
A valve that stops the flow of a fluid, usually for maintenance or safety purposes
Leak Alarm
An alarm that indicates leaks occured in systems containing fluids
Leak Detector Equipment
Leaving Hot Water Temperature High Reset Setpoint
Leaving Hot Water Temperature Load Shed Status
Leaving Hot Water Temperature Low Reset Setpoint
Light
Lighting Level Command
Controls the amount of the light provided by the device typically in percentages.
Liquid CO2
Carbon Dioxide in the liquid phase
Load Setpoint
Load Shed Differential Pressure Setpoint
Lockout Temperature Differential Parameter
Lounge
A room for lesiure activities or relaxing
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Lounge
Low Discharge Air Flow Alarm
An alarm that indicates that the discharge air flow is lower than normal.
Low Discharge Air Temperature Alarm
MAU
See Makeup_Air_Unit
Makeup Water
Water used used to makeup water loss through leaks, evaporation, or blowdown
Max Cooling Discharge Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Cooling_Discharge_Air_Flow_Setpoint.
Max Discharge Air Static Pressure Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Discharge_Air_Static_Pressure_Setpoint.
Max Discharge Air Temperature Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Discharge_Air_Temperature_Setpoint.
Max Heating Discharge Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Heating_Discharge_Air_Flow_Setpoint.
Max Occupied Cooling Discharge Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Occupied_Cooling_Discharge_Air_Flow_Setpoint.
Max Occupied Heating Discharge Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Occupied_Heating_Discharge_Air_Flow_Setpoint.
Max Unoccupied Cooling Discharge Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Unoccupied_Cooling_Discharge_Air_Flow_Setpoint.
Max Unoccupied Heating Discharge Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Unoccupied_Heating_Discharge_Air_Flow_Setpoint.
Mechanical Room
A class of service rooms where mechanical equipment (HVAC) operates
Medical Room
A class of rooms used for medical purposes
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:HealthcareRoom
Medium Temperature Hot Water Differential Pressure Load Shed Status
Min Cooling Discharge Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Cooling_Discharge_Air_Flow_Setpoint.
Min Discharge Air Static Pressure Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Discharge_Air_Static_Pressure_Setpoint.
Min Discharge Air Temperature Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Discharge_Air_Temperature_Setpoint.
Min Heating Discharge Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Heating_Discharge_Air_Flow_Setpoint.
Min Occupied Cooling Discharge Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Occupied_Cooling_Discharge_Air_Flow_Setpoint.
Min Occupied Heating Discharge Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Occupied_Heating_Discharge_Air_Flow_Setpoint.
Min Unoccupied Cooling Discharge Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Unoccupied_Cooling_Discharge_Air_Flow_Setpoint.
Min Unoccupied Heating Discharge Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Unoccupied_Heating_Discharge_Air_Flow_Setpoint.
Modbus Controller
Motion Sensor
Detects the presence of motion in some area
NVR
Network Router
Network Security Equipment
Occupancy Percentage
Percent of total occupancy of space that is occupied
Occupancy Sensor Equipment
Occupancy Status
Indicates if a room or space is occupied
Occupied Cooling Discharge Air Flow Setpoint
Sets discharge air flow for cooling when occupied
Occupied Cooling Zone Air Temperature Setpoint
Sets temperature for zone air cooling when occupied
Occupied Discharge Air Flow Setpoint
Sets discharge air flow when occupied
Occupied Discharge Air Temperature Setpoint
Occupied Heating Discharge Air Flow Setpoint
Sets discharge air flow for heating when occupied
Occupied Heating Zone Air Temperature Setpoint
Sets temperature for zone air heating when occupied
Occupied Load Shed Command
Occupied Target Zone Air Temperature Setpoint
Target Setpoint (also known as Common Setpoint) is a reference point representing the desired occupied air temperature in a specific zone of a building. This setpoint acts as a baseline from which deadband setpoints are established by adding or subtracting a deadband width.
Operating Mode Status
Indicates the current operating mode of a system, device or control loop
Outside Air Temperature Enable Differential Sensor
Outside Fan
Fan moving outside air; air that is supplied into the building from the outdoors
Override Command
Controls or reports whether or not a device or control loop is in 'override'
PAU
A type of AHU, use to pre-treat the outdoor air before feed to AHU
PM10 Sensor
Detects matter of size 10 microns
PM1 Sensor
Detects matter of size 1 micron
PM2.5 Sensor
Detects matter of size 2.5 microns
PV Current Output Sensor
See Photovoltaic_Current_Output_Sensor
People Count Sensor Equipment
Potable Water
Water that is safe to drink
Power Alarm
An alarm that indicates the off-normal conditions associated with electrical power.
Preheat Discharge Air Temperature Sensor
Measures the temperature of discharge air before heating is applied
Pressure Regulator Valve
Device to maintain controlled downstream fluid pressure with varying upstream pressure.
RC Panel
See Radiant_Ceiling_Panel
RTU
see Rooftop_Unit
RVAV
See Variable_Air_Volume_Box_With_Reheat
Refrigerant Valve
A valve controlling the flow or pressure of refrigerant in refrigeration or air conditioning systems, crucial for system efficiency
Region
A unit of geographic space, usually contigious or somehow related to a geopolitical feature
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Region
Rest Room
A room that provides toilets and washbowls. Alternate spelling of Restroom
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:RestingRoom
Rotational Speed
Run Status
Run Time Sensor
Measures the duration for which a device was in an active or "on" state
Security Service Room
A class of spaces used by the security staff of a facility
Separation Tank
A tank used in conjunction with a filter to facilitate the separation of filtrate material for disposal.
Server
Shading System
Devices that can control daylighting through various means
Smoke Alarm
An alarm that indicates the off-normal conditions associated with smoke.
Solar Irradiance
The power per unit area of solar electromagnetic radiation incident on a surface
Solar Irradiance Sensor
Measures solar irradiance levels for photovoltaic systems
Solar Thermal Collector
A type of solar panels that converts solar radiation into thermal energy.
Speed Mode Status
Indicates the speed mode of a motor with various categorical settings, such as a multi-state value including low, medium, and high.
Speed Setpoint
Sets speed
Standby Load Shed Command
Standby Unit On Off Status
Indicates the on/off status of a standby unit
Static Pressure Sensor
Measures resistance to airflow in a heating and cooling system's components and duct work
Static Pressure Step Parameter
Steam
water in the vapor phase.
Steam Radiator
Radiator that uses steam
Storey
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Level
Supply Hot Water Temperature Setpoint
Supply Water Flow Setpoint
Switch
A switch used to operate all or part of a lighting installation
TABS Panel
See Thermally_Activated_Building_System_Panel
TVOC Sensor
Temperature Step Parameter
Thermal Power Sensor
Thermostat
An automatic control device used to maintain temperature at a fixed or adjustable setpoint.
Torque Sensor
Measures torque, the tendency of a force to rotate an object about some axis
Unoccupied Cooling Discharge Air Flow Setpoint
Sets discharge air flow for cooling when unoccupied
Unoccupied Cooling Zone Air Temperature Setpoint
Sets temperature of air when unoccupied for cooling within a specific zone
Unoccupied Discharge Air Flow Setpoint
Unoccupied Discharge Air Temperature Setpoint
Unoccupied Heating Discharge Air Flow Setpoint
Unoccupied Heating Zone Air Temperature Setpoint
Sets temperature of air when unoccupied for heating within a specific zone
Unoccupied Load Shed Command
Unoccupied Target Zone Air Temperature Setpoint
Target Setpoint (also known as Common Setpoint) is a reference point representing the desired unoccupied air temperature in a specific zone of a building. This setpoint acts as a baseline from which deadband setpoints are established by adding or subtracting a deadband width.
VAV
See Variable_Air_Volume_Box
VFD
Electronic device that varies its output frequency to vary the rotating speed of a motor, given a fixed input frequency. Used with fans or pumps to vary the flow in the system as a function of a maintained pressure.
Valve Command
Controls or reports the openness of a valve (typically as a proportion of its full range of motion)
Velocity Pressure Sensor
Measures the difference between total pressure and static pressure
Vibration Sensor Equipment
Voltage Alarm
An alarm that indicates the voltage is not in a normal state.
Voltage Imbalance
The percent deviation from average voltage
Water Usage Sensor
Measures the amount of water that is consumed, over some period of time
Wireless Access Point
Aggregate
Description of how the data for this point is aggregated
aggregationInterval
aliasOf
(Horizontal) angle between a projected vector and a reference vector (typically a compass bearing). The projected vector usually indicates the direction of a face or plane.
Building primary function
Enumerated string applied to a site record to indicate the building's primary function. The list of primary functions is derived from the US Energy Star program (adopted from Project Haystack)
Building thermal transmittance
The area-weighted average heat transfer coefficient (commonly referred to as a U-value) for a building envelope
Connected To
Cooling capacity
Measurement of a chiller ability to remove heat (adopted from Project Haystack)
Coordinates
The location of an entity in latitude/longitude
Current flow type
has electric vehicle charger directionality
Indicates if the EVSE charger supports bidirectional charging or just unidirectional charging of the EV battery
has electric vehicle charger type
Which type of EVSE charger this is, e.g. Level 1 (up to up to 2.5kW of AC power on 1 phase 120V input), Level 2 (direct AC power but can use higher voltage and up to 3 phases), or Level 3 (direct DC power)
has electric vehicle connector type
Identifies which kind of connector the port has. This property helps identify the physical connection required between the vehicle and the charging equipment.
electrical complex power type
Associated electrical complexity with the entity
Electrical flow direction
Entity has this electrical flow relative to the building'
Electrical phase count
Electrical phases
Gross area
Has address
To specify the address of a building.
hasAmbientTemperature
Has input substance
The subject receives the given substance as an input to its internal process
Has output substance
The subject produces or exports the given substance from its internal process
Has QUDT reference
Points to the relevant QUDT definition
Is replaced by
is virtual meter
True if the associated meter is 'virtual', i.e. a logical meter which includes or aggregates information from a variety of sources such as other submeters or equipment.
Measured module conversion efficiency
The measured percentage of sunlight that is converted into usable power
Measured power input
The nominal measured power input of the entity
Measured power output
The nominal measured power output of the entity
Net area
Operational stage
Operational stage count
The number of operational stages supported by this equipment
Panel area
Surface area of a panel, such as a PV panel
powerComplexity is deprecated in favor of electricalComplexPower because the latter is more clear
CONSTRUCT { $this brick:electricalComplexPower ?prop . } WHERE { $this brick:powerComplexity ?prop . }
powerFlow is deprecated in favor of electricalFlow as the latter is more clear
CONSTRUCT { $this brick:electricalFlow ?prop . } WHERE { $this brick:powerFlow ?prop . }
Rated maximum current input
The maximum current that can be input to the entity
Rated maximum current output
The maximum current that can be output by the entity
Rated maximum voltage input
The maximum voltage that can be input to the entity
Rated maximum voltage output
The maximum voltage that can be output by the entity
Rated minimum current input
The minimum current that can be input to the entity
Rated minimum current output
The minimum current that can be output by the entity
Rated minimum voltage input
The minimum voltage that can be input to the entity
Rated minimum voltage output
The minimum voltage that can be output by the entity
Rated module conversion efficiency
The *rated* percentage of sunlight that is converted into usable power, as measured using Standard Test Conditions (STC): 1000 W/sqm irradiance, 25 degC panel temperature, no wind
Rated power input
The nominal rated power input of the entity
Rated power output
The nominal rated power output of the entity
Resolution
The resolution of the entity specifing the smallest measurable or controllable increment
Temperature coefficient
The % change in power output for every degree celsius that the entity is hotter than 25 degrees celsius
The direction an entity is facing in degrees above the horizon
Year built
Four digit year that a building was first built. (adopted from Project Haystack)
The aggregation function applied to data in the interval which produces the value
Interval expressed in an ISO 8601 Duration string, e.g. RP1D
Outpatient Rehabilitation/Physical Therapy
Personal Services (Health/Beauty, Dry Cleaning, etc)
Repair Services (Vehicle, Shoe, Locksmith, etc)
CONSTRUCT { $this owl:deprecated true } WHERE { $this brick:deprecation ?dep }
The version in which the entity was deprecated
A SHACL rule which will mitigate the deprecation
A message describing how to mitigate or address the deprecation
has Aggregate property
has Area property
has Azimuth property
has Building primary function property
has Building thermal transmittance property
has Conversion efficiency property
has Cooling capacity property
has Current flow type property
has Deprecation Notice property
has has electric vehicle charger type property
has has electric vehicle connector type property
has Electrical phase count property
has Electrical phases property
has Gross area property
has is virtual meter property
has Last known value property
has Measured module conversion efficiency property
has Measured power input property
has Measured power output property
has Net area property
has Operational stage count property
has Operational stage property
has Panel area property
has Rated current input property
has Rated current output property
has Rated maximum current input property
has Rated maximum current output property
has Rated maximum voltage input property
has Rated maximum voltage output property
has Rated minimum current input property
has Rated minimum current output property
has Rated minimum voltage input property
has Rated minimum voltage output property
has Rated module conversion efficiency property
has Rated power input property
has Rated power output property
has Measured voltage input property
has Rated voltage output property
has Resolution property
has Temperature coefficient property
has Thermal transmittance property
has Tilt property
has Year built property
A Point can be a Point of Equipment, Location or Space.
A GeoJSON Polygon coordinate listing representing the geometrical representation of the space. Coordinates may be expressed in two or three dimensions. Ex: [[30.0, 10.0, 0.0], [40.0, 40.0, 2.0], [20.0, 40.0, 2.0], [10.0, 20.0, 2.0], [30.0, 10.0, 0.0]].
IPAddress
MACAddress
acknowledgedBy
acknowledgedTime
address
addressLine1
addressLine2
adjacentElement
architectedBy
area
assetTag
capacity
city
closedBy
closedTime
commissionedBy
commissioningDate
constructedBy
containsElement
coordinateSystem
country
createdBy
createdTime
currentLevel
documentTopic
end
endLevel
familyName
gender
georeference
givenName
grossArea
hasMember
heightScaleFactor
image
initialCost
installationDate
installedBy
intersectingElement
isMemberOf
leaseOf
leasee
leasor
levelNumber
logo
maintenanceInterval
manufacturedBy
maxOccupancy
modelNumber
mountedOn
netArea
objectOfInterest
operatedBy
originX
originY
ownedBy
owns
postalCode
producedBy
region
regulatedBy
regulates
relatedTo
rentableArea
seatingCapacity
serialNumber
servicedBy
severity
start
startLevel
status
targetPoint
timestamp
tripDirection
turnoverDate
url
widthScaleFactor
xRotationalScaleFactor
yRotationalScaleFactor
to be present if timeRangeSpecifier has the value 'specified'
to be present if locationSpecifier has the value 'specified'
see Clause 20.2.12 for restrictions
Optionally limited to 32 bits
CHOICE [20] has been intentionally omitted. It parallels the 'none' event type CHOICE[20] of the BACnetEventParameter production which was introduced for the case an object does not apply an event algorithm
any primitive datatype; complex types cannot be decoded
The 'parent' BACnet device that hosts this BACnet object.
Acidity
Chemicals or substances having a pH less than 7 are said to be acidic; lower pH means higher acidity.
Applicable units are those of quantitykind:Acidity
Acoustic Impediance
$\textit{Acoustic Impedance}$ at a surface is the complex quotient of the average sound pressure over that surface by the sound volume flow rate through that surface.
$Z_a= \frac{p}{q} = \frac{p}{vS}$, where $p$ is the sound pressure, $q$ is the sound volume velocity, $v$ is sound particle velocity, and $S$ is the surface area through which an acoustic wave of frequence $f$ propagates.
Acoustic impedance at a surface is the complex quotient of the average sound pressure over that surface by the sound volume flow rate through that surface.
Action
An action is usually an integral over time. But for action pertaining to fields, it may be integrated over spatial variables as well. In some cases, the action is integrated along the path followed by the physical system. $$$$ The evolution of a physical system between two states is determined by requiring the action be minimized or, more generally, be stationary for small perturbations about the true evolution. This requirement leads to differential equations that describe the true evolution. Conversely, an action principle is a method for reformulating differential equations of motion for a physical system as an equivalent integral equation. Although several variants have been defined (see below), the most commonly used action principle is Hamilton's principle.
$S = \int Ldt$, where $L$ is the Lagrange function and $t$ is time.
An action is usually an integral over time. But for action pertaining to fields, it may be integrated over spatial variables as well. In some cases, the action is integrated along the path followed by the physical system. If the action is represented as an integral over time, taken a the path of the system between the initial time and the final time of the development of the system. The evolution of a physical system between two states is determined by requiring the action be minimized or, more generally, be stationary for small perturbations about the true evolution. This requirement leads to differential equations that describe the true evolution. Conversely, an action principle is a method for reformulating differential equations of motion for a physical system as an equivalent integral equation. Although several variants have been defined (see below), the most commonly used action principle is Hamilton's principle.
Applicable units are those of quantitykind:Action
Molar Mass variation due to Pressure
The "Variation of Molar Mass" of a gas as a function of pressure.
Applicable units are those of quantitykind:AmountOfSubstancePerMassPressure
القدرة الظاهرية
Scheinleistung
apparent power
potencia aparente
puissance apparente
potenza apparente
皮相電力
moc pozorna
potência aparente
视在功率
"Apparent Power" is the product of the rms voltage $U$ between the terminals of a two-terminal element or two-terminal circuit and the rms electric current I in the element or circuit. Under sinusoidal conditions, the apparent power is the modulus of the complex power.
$\left | \underline{S} \right | = UI$, where $U$ is rms value of voltage and $I$ is rms value of electric current.
Applicable units are those of quantitykind:ComplexPower
表观功率
Fläche pro Heizlast
area per heating load
The ratio of an area and the power required for maintaining room temperature at a given level
Applicable units are those of quantitykind:AreaPerPower
Area Temperature
Applicable units are those of quantitykind:AreaTemperature
Area Time Temperature
Applicable units are those of quantitykind:AreaTimeTemperature
Basicity
Chemicals or substances having a $pH$ higher than 7 are said to be basic; higher $pH$ means higher basicity.
Chemicals or substances having a pH higher than 7 are said to be basic; higher pH means higher basicity.
Applicable units are those of quantitykind:Basicity
Blood Glucose Level
Blood sugar level, blood sugar concentration, or blood glucose level is the amount of glucose present in the blood of humans and animals. Glucose is a simple sugar and approximately 4 grams of glucose are present in the blood of humans at all times. Stored in skeletal muscle and liver cells in the form of glycogen, the body tightly regulates blood glucose levels as a part of metabolic homeostasis. During fasting blood glucose is maintained at a constant level at the expense of the glycogen stores in the liver and skeletal muscle. There are two main methods of describing concentrations: by weight, and by molecular count. Weights are in grams and molecular counts in moles. A mole is $6.022\times 10^{23}$ molecules. In both cases, the unit is usually modified by $milli-$ or $micro-$ or other prefix, and is always $per$ some volume, often a litre. Conversion factors depend on the molecular weight of the substance in question. $mmol/L$ is millimoles/liter, and is the world standard unit for measuring glucose in blood. Specifically, it is the designated SI (Systeme International) unit. Some countries use $mg/dl$. A mole is about $6\times 10^{23}$ molecules. $mg/dL$ (milligrams/deciliter) is the traditional unit for measuring $bG$ (blood glucose). There is a trend toward using $mmol/L$ however $mg/dL$ is much in practice. Some use is made of $mmol/L$ as the primary unit with $mg/dL$ quoted in parentheses. This acknowledges the large base of health care providers, researchers and patients who are already familiar with $mg/dL$.
Applicable units are those of quantitykind:BloodGlucoseLevel
citation: https://en.wikipedia.org/wiki/Blood_sugar_level
Blood Glucose Level by Mass
Applicable units are those of quantitykind:BloodGlucoseLevel_Mass
Bulk Modulus
The bulk modulus of a substance measures the substance's resistance to uniform compression. It is defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume.
$K = \frac{p}{\vartheta}$, where $p$ is pressure and $\vartheta$ is volume strain.
Applicable units are those of quantitykind:BulkModulus
The CO2 equivalent is a measure used to compare the emissions from various greenhouse gases on the basis of their global-warming potential (GWP), by converting amounts of other gases to the equivalent amount of carbon dioxide with the same global warming potential.
Applicable units are those of quantitykind:CO2Equivalent
"Combined Non Evaporative Heat Transfer Coefficient" is the
$h = h_r + h_c + h_k$, where $h_r$ is the linear radiative heat transfer coefficient, $h_c$ is the convective heat transfer coefficient, and $h_k$ is the conductive heat transfer coefficient.
Applicable units are those of quantitykind:CombinedNonEvaporativeHeatTransferCoefficient
Conduction Speed
"Conduction Speed" is the speed of impulses in nerve fibers.
Applicable units are those of quantitykind:ConductionSpeed
Anschaffungskosten pro Watt
cost per power
In photovoltaics, cost per power of electricity produced measures the cost of installing the hardware relative to the power produced.
Applicable units are those of quantitykind:CostPerPower
درجة حرارة كوري
Curieova teplota
Curie-Temperatur
Curie temperature
temperatura de Curie
نقطه کوری
température de Curie
क्यूरी ताप
punto di Curie
キュリー温度
Suhu Curie
temperatura Curie
Punct Curie
Точка Кюри
Curie sıcaklığı
居里点
"Curie Temperature" is the critical thermodynamic temperature of a ferromagnet.
Currency Per Flight
Applicable units are those of quantitykind:CurrencyPerFlight
Curvature
The canonical example of extrinsic curvature is that of a circle, which has curvature equal to the inverse of its radius everywhere. Smaller circles bend more sharply, and hence have higher curvature. The curvature of a smooth curve is defined as the curvature of its osculating circle at each point. The osculating circle of a sufficiently smooth plane curve at a given point on the curve is the circle whose center lies on the inner normal line and whose curvature is the same as that of the given curve at that point. This circle is tangent to the curve at the given point. The magnitude of curvature at points on physical curves can be measured in $diopters$ (also spelled $dioptre$) — this is the convention in optics.
The canonical example of extrinsic curvature is that of a circle, which has curvature equal to the inverse of its radius everywhere. Smaller circles bend more sharply, and hence have higher curvature. The curvature of a smooth curve is defined as the curvature of its osculating circle at each point. The osculating circle of a sufficiently smooth plane curve at a given point on the curve is the circle whose center lies on the inner normal line and whose curvature is the same as that of the given curve at that point. This circle is tangent to the curve at the given point. That is, given a point P on a smooth curve C, the curvature of C at P is defined to be 1/R where R is the radius of the osculating circle of C at P. The magnitude of curvature at points on physical curves can be measured in diopters (also spelled dioptre) — this is the convention in optics. [Wikipedia],
Applicable units are those of quantitykind:Curvature
Debye Angular Wavenumber
"Debye Angular Wavenumber" is the cut-off angular wavenumber in the Debye model of the vibrational spectrum of a solid.
Applicable units are those of quantitykind:DebyeAngularWavenumber
Displacement Current Density
$\text{Displacement Current Density}$ is the time rate of change of the $\textit{Electric Flux Density}$. This is a measure of how quickly the electric field changes if we observe it as a function of time. This is different than if we look at how the electric field changes spatially, that is, over a region of space for a fixed amount of time.
$J_D = \frac{\partial D}{\partial t}$, where $D$ is electric flux density and $t$ is time.
Applicable units are those of quantitykind:DisplacementCurrentDensity
Delta u,v
Duv is a metric that is short for Delta u,v (not to be confused with Delta u',v') and describes the distance of a light color point from the black body curve.
Applicable units are those of quantitykind:Duv
Electric charge per amount of substance
"Electric Charge Per Amount Of Substance" is the charge assocated with a given amount of substance. Un the ISO and SI systems this is $1 mol$.
Applicable units are those of quantitykind:ElectricChargePerAmountOfSubstance
Electric Current per Length
Electric Flux
"Electric Flux" through an area is defined as the electric field multiplied by the area of the surface projected in a plane perpendicular to the field. Electric Flux is a scalar-valued quantity.
$\Psi = \int_S D \cdot e_n dA$, over a surface $S$, where $D$ is electric flux density and $e_n dA$ is the vector surface element.
Applicable units are those of quantitykind:ElectricFlux
Electrolytic Conductivity
"Electrolytic Conductivity" of an electrolyte solution is a measure of its ability to conduct electricity.
$x = \frac{J}{E}$, where $J$ is the electrolytic current density and $E$ is the electric field strength.
Applicable units are those of quantitykind:ElectrolyticConductivity
Electromagnetic Energy Density
$\textit{Electromagnetic Energy Density}$, also known as the $\color{indigo} {\text{Volumic Electromagnetic Energy}}$, is the energy associated with an electromagnetic field, per unit volume of the field.
$w = (1/2) ( \mathbf{E} \cdot \mathbf{D} + \mathbf{B} \cdot \mathbf{H})$, where $\mathbf{E}$ is electric field strength, $\mathbf{D}$ is electric flux density, $\mathbf{M}$ is magnetic flux density, and $\mathbf{H}$ is magnetic field strength.
Applicable units are those of quantitykind:ElectromagneticEnergyDensity
Energy Density of States
"Energy Density of States" refers to electrons or other entities, e.g. phonons. It can, for example, refer to amount of substance instead of volume.
$\rho(E) = n_E(E) = \frac{dN(E)}{dE}\frac{1}{V}$, where $N(E)$ is the total number of states with energy less than $E$, and $V$ is the volume.
Applicable units are those of quantitykind:EnergyDensityOfStates
طاقة داخلية
vnitřní energie
innere Energie
internal energy
energía interna
انرژی درونی
énergie interne
आन्तरिक ऊर्जा
energia interna
内部エネルギー
Tenaga dalaman
energia wewnętrzna
energie internă
внутренняя энергия
Notranja energija
İç enerji
内能
The internal energy is the total energy contained by a thermodynamic system. It is the energy needed to create the system, but excludes the energy to displace the system's surroundings, any energy associated with a move as a whole, or due to external force fields. Internal energy has two major components, kinetic energy and potential energy. The internal energy (U) is the sum of all forms of energy (Ei) intrinsic to a thermodynamic system: $ U = \sum_i E_i $
thermodynamische Energie
thermodynamic energy
énergie thermodynamique
energia termodinamica
tenaga termodinamik
Exposure Rate
"Exposure Rate" expresses the rate of charge production per unit mass of air and is commonly expressed in roentgens per hour (R/h) or milliroentgens per hour (mR/h).
$\dot{X} = \frac{dX}{dt}$, where $X$ is the increment of exposure during time interval with duration $t$.
Applicable units are those of quantitykind:ExposureRate
Fermi Angular Wavenumber
Applicable units are those of quantitykind:FermiAngularWavenumber
Force per Angle
Applicable units are those of quantitykind:ForcePerAngle
Friction
"Friction" is the force of two surfaces In contact, or the force of a medium acting on a moving object (that is air on an aircraft). When contacting surfaces move relative to each other, the friction between the two objects converts kinetic energy into thermal energy.
انفلاتية
fugacita
Fugazität
fugacity
fugacidad
بی‌دوامی
fugacité
fugacità
フガシティー
Fugasiti
Lotność
fugacidade
fugacitate
fügasite
逸度
"Fugacity" of a real gas is an effective pressure which replaces the true mechanical pressure in accurate chemical equilibrium calculations. It is equal to the pressure of an ideal gas which has the same chemical potential as the real gas.
Applicable units are those of quantitykind:Fugacity
Applicable units are those of quantitykind:Gradient
Group Speed of Sound
In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance.
$c_g = \frac{d\omega}{dk}$, where $\omega$ is the angular frequency and $k$ is angular wavenumber.
Applicable units are those of quantitykind:GroupSpeedOfSound
Inverse Magnetic Flux
Applicable units are those of quantitykind:InverseMagneticFlux
Inverse Square Mass
Applicable units are those of quantitykind:InverseMass_Squared
Inverse Time Temperature
Applicable units are those of quantitykind:InverseTimeTemperature
Inverse Square Time
Applicable units are those of quantitykind:InverseTime_Squared
Ionization Energy
"Ionization Energy" is the energy difference between an electron at rest at infinity and an electron at a certain energy level. The amount of energy required to remove an electron from that atom or molecule in the gas phase.
نسبة السعة الحرارية
Poissonova konstanta
Isentropenexponent
isentropic exponent
Coeficiente de dilatación adiabática
exposant isoentropique
Coefficiente di dilatazione adiabatica
比熱比
Wykładnik adiabaty
Coeficiente de expansão adiabática
Coeficient de transformare adiabatică
Показатель адиабаты
adiabatni eksponent
ısı sığası oranı; adyabatik indeks
绝热指数
$\textit{Isentropic Exponent}$ is a variant of $\textit{Specific Heat Ratio Capacities}$. For an ideal gas $\textit{Isentropic Exponent}$, $\varkappa$. is equal to $\gamma$, the ratio of its specific heat capacities $c_p$ and $c_v$ under steady pressure and volume.
$\varkappa = -\frac{V}{p}\left \{ \frac{\partial p}{\partial V}\right \}_S$, where $V$ is volume, $p$ is pressure, and $S$ is entropy.
Applicable units are those of quantitykind:IsentropicExponent
indice adiabatique
indice adiabatico
Length Ratio
Linear Density
The Linear density, linear mass density or linear mass is a measure of mass per unit of length, and it is a characteristic of strings or other one-dimensional objects.
$\rho_l = \frac{dm}{dl}$, where $m$ is mass and $l$ is length.
Applicable units are those of quantitykind:LinearDensity
Applicable units are those of quantitykind:LinearMass
Applicable units are those of quantitykind:LinearTorque
Interval měření frekvence ?
Frequenzmaßintervall
logarithmic frequency interval
فاصله فرکانس لگاریتمی
intervalle de fréquence logarithmique
intervallo logaritmico di frequenza
Selang kekerapan logaritma
intervalo logarítmico de frequência
частотный интервал
logaritmik frekans aralığı
对数频率间隔
$G = \log_{2}(f2/f1)$, where $f1$ and $f2 \geq f1$ are frequencies of two tones.
Applicable units are those of quantitykind:LogarithmicFrequencyInterval
Luminous Exposure
Luminous Exposure is the time-integrated illuminance.
Applicable units are those of quantitykind:LuminousExposure
"Luminous Intensity Distribution" is a measure of the luminous intensity of a light source that changes according to the direction of the ray. It is normally based on some standardized distribution light distribution curves. Usually measured in Candela/Lumen (cd/lm) or (cd/klm).
Applicable units are those of quantitykind:LuminousIntensityDistribution
Magnetic Dipole Moment
"Magnetic Dipole Moment" is the magnetic moment of a system is a measure of the magnitude and the direction of its magnetism. Magnetic moment usually refers to its Magnetic Dipole Moment, and quantifies the contribution of the system's internal magnetism to the external dipolar magnetic field produced by the system (that is, the component of the external magnetic field that is inversely proportional to the cube of the distance to the observer). The Magnetic Dipole Moment is a vector-valued quantity. For a particle or nucleus, vector quantity causing an increment $\Delta W = -\mu \cdot B$ to its energy $W$ in an external magnetic field with magnetic flux density $B$.
$E_m = -m \cdot B$, where $E_m$ is the interaction energy of the molecule with magnetic diploe moment $m$ and a magnetic field with magnetic flux density $B$ or, $J_m = \mu_0 M$ where $\mu_0$ is the magnetic constant and $M$ is Magnetization.
Applicable units are those of quantitykind:MagneticDipoleMoment
Magnetic Reluctivity
"Length Per Unit Magnetic Flux" is the the resistance of a material to the establishment of a magnetic field in it. It is the reciprocal of $\textit{Magnetic Permeability}$, the inverse of the measure of the ability of a material to support the formation of a magnetic field within itself.
Length Per Unit Magnetic Flux is the the resistance of a material to the establishment of a magnetic field in it. It is the reciprocal of Magnetic Permeability, the inverse of the measure of the ability of a material to support the formation of a magnetic field within itself.
Applicable units are those of quantitykind:MagneticReluctivity
مغنطة
Magnetisierung
magnetization
magnetización
aimantation
magnetizzazione
磁化
magnetyzacia
magnetização
намагниченность
"Magnetization" is defined as the ratio of magnetic moment per unit volume. It is a vector-valued quantity.
$M = dm/dV$, where $m$ is magentic moment of a substance in a domain with Volume $V$.
Mass Fraction of Dry Matter
"Mass Fraction of Dry Matter" is one of a number of $\textit{Concentration}$ quantities defined by ISO 80000.
$w_d= 1 - w_{h2o}$, where $w_{h2o}$ is mass fraction of water.
"Mass Fraction of Dry Matter" is one of a number of Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassFractionOfDryMatter
Mass Fraction of Water
"Mass Fraction of Water" is one of a number of $\textit{Concentration}$ quantities defined by ISO 80000.
$w_{H_2o} = \frac{u}{1+u}$, where $u$ is mass ratio of water to dry water.
Mass Fraction of Water is one of a number of Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassFractionOfWater
massic heat capacity
ratio of heat capacity divided by mass
Quotient Wärmekapazität dividiert durch Masse
Applicable units are those of quantitykind:MassicHeatCapacity
Modulus of Linear Subgrade Reaction
Modulus of Linear Subgrade Reaction is a measure for modulus of linear subgrade reaction, which expresses the elastic bedding of a linear structural element per length, such as for a beam. It is typically measured in N/m^2
Applicable units are those of quantitykind:ModulusOfLinearSubgradeReaction
Molar Absorption Coefficient
"Molar Absorption Coefficient" is a spectrophotometric unit indicating the light a substance absorbs with respect to length, usually centimeters, and concentration, usually moles per liter.
$x = aV_m$, where $a$ is the linear absorption coefficient and $V_m$ is the molar volume.
Applicable units are those of quantitykind:MolarAbsorptionCoefficient
Molar Flux Density
the rate at which moles of a substance pass through a unit area per unit time. It is used for describing the flow of materials in terms of the transport of molecules or particles rather than bulk mass. The SI units are mol m-2 s-1
Applicable units are those of quantitykind:MolarFluxDensity
Molecular Mass
The molecular mass, or molecular weight of a chemical compound is the mass of one molecule of that compound, relative to the unified atomic mass unit, u. Molecular mass should not be confused with molar mass, which is the mass of one mole of a substance.
Applicable units are those of quantitykind:MolecularMass
Mortality Rate
Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time.
Applicable units are those of quantitykind:MortalityRate
Neel Temperature
"Neel Temperature" is the critical thermodynamic temperature of an antiferromagnet.
Particle Fluence Rate
"Particle Fluence Rate" can be defined as the total number of particles (typically Gamma Ray Photons ) crossing over a sphere of unit cross section which surrounds a Point Source of Ionising Radiation.
$\theta = \frac{d\Phi}{dt}$, where $d\Phi$ is the increment of the particle fluence during an infinitesimal time interval with duration $dt$.
Applicable units are those of quantitykind:ParticleFluenceRate
Period
Duration of one cycle of a periodic phenomenon.
Applicable units are those of quantitykind:Period
Phase speed of sound
In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. Each frequency component propagates at its own Phase Velocity of Sound.
$c = \frac{\omega}{k} = \lambda f$, where $\omega$ is the angular frequency, $k$ is angular wavenumber, $\lambda$ is the wavelength, and $f$ is the frequency.
Applicable units are those of quantitykind:PhaseSpeedOfSound
polarisability
Polarizability
"Polarizability" is the relative tendency of a charge distribution, like the electron cloud of an atom or molecule, to be distorted from its normal shape by an external electric field, which may be caused by the presence of a nearby ion or dipole. The electronic polarizability $\alpha$ is defined as the ratio of the induced dipole moment of an atom to the electric field that produces this dipole moment. Polarizability is often a scalar valued quantity, however in the general case it is tensor-valued.
measure of the deformability of the electron shell of molecules and atoms
Maß für die Deformierbarkeit der Elektronenhülle von Molekülen und Atomen
Applicable units are those of quantitykind:Polarizability
متجَه بوينتنج
Poynting-Vektor
Poynting vector
vector de Poynting
vecteur de Poynting
vettore di Poynting
ポインティングベクトル
wektor Poyntinga
вектор Пойнтинга
A $\textit{Poynting Vector}$ is the vector product of the electric field strength $\mathbf{E}$ and the magnetic field strength $\mathbf{H}$ of the electromagnetic field at a given point. The flux of the Poynting vector through a closed surface is equal to the electromagnetic power passing through this surface. For a periodic electromagnetic field, the time average of the Poynting vector is a vector of which, with certain reservations, the direction may be considered as being the direction of propagation of electromagnetic energy and the magnitude considered as being the average electromagnetic power flux density.
$\mathbf{S} = \mathbf{E} \times \mathbf{H} $, where $\mathbf{E}$ is electric field strength and \mathbf{H} is magnetic field strength.
"Poynting Vector" is the vector product of the electric field strength $\mathbf{E}$ and the magnetic field strength $\mathbf{H}" of the electromagnetic field at a given point. The flux of the Poynting vector through a closed surface is equal to the electromagnetic power passing through this surface. For a periodic electromagnetic field, the time average of the Poynting vector is a vector of which, with certain reservations, the direction may be considered as being the direction of propagation of electromagnetic energy and the magnitude considered as being the average electromagnetic power flux density.
Applicable units are those of quantitykind:PoyntingVector
Quality Factor
"Quality Factor", of a resonant circuit, is a measure of the "goodness" or quality of a resonant circuit. A higher value for this figure of merit correspondes to a more narrow bandwith, which is desirable in many applications. More formally, $Q$ is the ratio of power stored to power dissipated in the circuit reactance and resistance, respectively
If $\underline{Z} = R + jX$, then $Q = \left | X \right |/R$, where $\underline{Z}$ is impedance, $R$ is resistance, and $X$ is reactance.
Resolve Quality Facor - electronics and also doses
Applicable units are those of quantitykind:QualityFactor
Radius
In classical geometry, the "Radius" of a circle or sphere is any line segment from its center to its perimeter the radius of a circle or sphere is the length of any such segment.
$r = \frac{d}{2}$, where $d$ is the circle diameter.
Reactance
$\textit{Reactance}$ is the opposition of a circuit element to a change of electric current or voltage, due to that element's inductance or capacitance. A built-up electric field resists the change of voltage on the element, while a magnetic field resists the change of current. The notion of reactance is similar to electrical resistance, but they differ in several respects. Capacitance and inductance are inherent properties of an element, just like resistance.
$X = im \underline{Z}$, where $\underline{Z}$ is impedance and $im$ denotes the imaginary part.
"Reactance" is the opposition of a circuit element to a change of electric current or voltage, due to that element's inductance or capacitance. A built-up electric field resists the change of voltage on the element, while a magnetic field resists the change of current. The notion of reactance is similar to electrical resistance, but they differ in several respects. Capacitance and inductance are inherent properties of an element, just like resistance.
Applicable units are those of quantitykind:Reactance
Reluctance
"Reluctance" or magnetic resistance, is a concept used in the analysis of magnetic circuits. It is analogous to resistance in an electrical circuit, but rather than dissipating electric energy it stores magnetic energy. In likeness to the way an electric field causes an electric current to follow the path of least resistance, a magnetic field causes magnetic flux to follow the path of least magnetic reluctance. It is a scalar, extensive quantity, akin to electrical resistance.
$R_m = \frac{U_m}{\Phi}$, where $U_m$ is magnetic tension, and $\Phi$ is magnetic flux.
Applicable units are those of quantitykind:Reluctance
Applicable units are those of quantitykind:Rotary-TranslatoryMotionConversion
Serum or Plasma Level
Applicable units are those of quantitykind:SerumOrPlasmaLevel
Slowing-Down Density
"Slowing-Down Density" is a measure of the rate at which neutrons lose energy in a nuclear reactor through collisions; equal to the number of neutrons that fall below a given energy per unit volume per unit time.
$q = -\frac{dn}{dt}$, where $n$ is the number density and $dt$ is the duration.
Applicable units are those of quantitykind:Slowing-DownDensity
سرعة جسيم
Schallschnelle
sound particle velocity
velocidad acústica de una partícula
vitesse acoustique d‘une particule
velocità di spostamento
粒子速度
prędkość akustyczna
velocidade acústica de uma partícula
Sound Particle velocity is the velocity v of a particle (real or imagined) in a medium as it transmits a wave. In many cases this is a longitudinal wave of pressure as with sound, but it can also be a transverse wave as with the vibration of a taut string. When applied to a sound wave through a medium of a fluid like air, particle velocity would be the physical speed of a parcel of fluid as it moves back and forth in the direction the sound wave is travelling as it passes.
$v = \frac{\partial\delta }{\partial t}$, where $\delta$ is sound particle displacement and $t$ is time.
Applicable units are those of quantitykind:SoundParticleVelocity
prędkość cząstki
Specific Acoustic Impedance
Applicable units are those of quantitykind:SpecificAcousticImpedance
specific weight
The specific weight, also known as the unit weight is a volume-specific quantity defined as the weight per unit volume of a material. Note that weight is defined as a force, distinct from mass.
Applicable units are those of quantitykind:SpecificWeight
Spectral Angular Cross-section
"Spectral Angular Cross-section" is the cross-section for ejecting or scattering a particle into an elementary cone with energy $E$ in an energy interval, divided by the solid angle $d\Omega$ of that cone and the range $dE$ of that interval.
$\sigma = \int \int \sigma_{\Omega,E} d\Omega dE$
Applicable units are those of quantitykind:SpectralAngularCrossSection
سرعة الصوت
rychlost zvuku
Schallgeschwindigkeit
speed of sound
velocidad del sonido
سرعت صوت
vitesse du son
ध्वनि का वेग
velocità del suono
音速
Kelajuan bunyi
prędkość dźwięku
velocidade do som
viteza sunetului
скорость звука
Hitrost zvoka
Ses hızı
The speed of sound is the distance travelled during a unit of time by a sound wave propagating through an elastic medium.
$c = \sqrt{\frac{K}{\rho}}$, where $K$ is the coefficient of stiffness, the bulk modulus (or the modulus of bulk elasticity for gases), and $\rho$ is the density. Also, $c^2 = \frac{\partial p}{\partial \rho}$, where $p$ is the pressure and $\rho$ is the density.
Schallausbreitungsgeschwindigkeit
célérité du son
Standard Gravitational Parameter
In celestial mechanics the standard gravitational parameter of a celestial body is the product of the gravitational constant G and the mass M of the body. Expressed as $\mu = G \cdot M$. The SI units of the standard gravitational parameter are $m^{3}s^{-2}$.
Applicable units are those of quantitykind:StandardGravitationalParameter
Stress
Stress is a measure of the average amount of force exerted per unit area of a surface within a deformable body on which internal forces act. In other words, it is a measure of the intensity or internal distribution of the total internal forces acting within a deformable body across imaginary surfaces. These internal forces are produced between the particles in the body as a reaction to external forces applied on the body. Stress is defined as ${\rm{Stress}} = \frac{F}{A}$.
Stress Intensity Factor
In fracture mechanics, the stress intensity factor (K) is used to predict the stress state ("stress intensity") near the tip of a crack or notch caused by a remote load or residual stresses. It is a theoretical construct usually applied to a homogeneous, linear elastic material and is useful for providing a failure criterion for brittle materials, and is a critical technique in the discipline of damage tolerance. The concept can also be applied to materials that exhibit small-scale yielding at a crack tip.
Applicable units are those of quantitykind:StressIntensityFactor
Superconduction Transition Temperature
"Superconduction Transition Temperature" is the critical thermodynamic temperature of a superconductor.
Surface Coefficient of Heat Transfer
$q = h (T_s - T_r)$, where $T_s$ is areic heat flow rate is the thermodynamic temperature of the surface, and is a reference thermodynamic temperature characteristic of the adjacent surroundings.
Applicable units are those of quantitykind:SurfaceCoefficientOfHeatTransfer
Temperature Amount of Substance
Applicable units are those of quantitykind:TemperatureAmountOfSubstance
Temperature Gradient
The temperature gradient measures the difference of a temperature per length, as for instance used in an external wall or its layers. It is usually measured in K/m.
Applicable units are those of quantitykind:TemperatureGradient
Temperature per Time Squared
Applicable units are those of quantitykind:TemperaturePerTime_Squared
thermal capacitance
ratio between the supplied quantity of heat and the temperature range caused by the supplied quantity of heat
Quotient aus der zugeführten Wärmemenge und der Temperaturänderungen, die durch diese zugeführte Wärmemenge verursacht wird
Applicable units are those of quantitykind:ThermalCapacitance
Thermal Energy Length
Applicable units are those of quantitykind:ThermalEnergyLength
Thermodynamic Energy
For a closed thermodynamic system, $\Delta U = Q + W$, where $Q$ is amount of heat transferred to the system and $W$ is work done on the system provided that no chemical reactions occur.
Thrust To Mass Ratio
Applicable units are those of quantitykind:ThrustToMassRatio
Time Ratio
Applicable units are those of quantitykind:TimeRatio
Torque per Length
Applicable units are those of quantitykind:TorquePerLength
Total Atomic Stopping Power
The "Total Atomic Stopping Power" for an ionizing particle passing through an element, is the particle's energy loss per atom within a unit area normal to the particle's path; equal to the linear energy transfer (energy loss per unit path length) divided by the number of atoms per unit volume.
$S_a = \frac{S}{n}$, where $S$ is the total linear stopping power and $n$ is the number density of the atoms in the substance.
Applicable units are those of quantitykind:TotalAtomicStoppingPower
Voltage Phasor
"Voltage Phasor" is a representation of voltage as a sinusoidal integral quantity using a complex quantity whose argument is equal to the initial phase and whose modulus is equal to the root-mean-square value. A phasor is a constant complex number, usually expressed in exponential form, representing the complex amplitude (magnitude and phase) of a sinusoidal function of time. Phasors are used by electrical engineers to simplify computations involving sinusoids, where they can often reduce a differential equation problem to an algebraic one.
When $u = \hat{U} \cos{(\omega t + \alpha)}$, where $u$ is the voltage, $\omega$ is angular frequency, $t$ is time, and $\alpha$ is initial phase, then $\underline{U} = Ue^{ja}$.
Volume per Unit Area
Applicable units are those of quantitykind:VolumePerArea
Volumetric Flux
In fluid dynamics, the volumetric flux is the rate of volume flow across a unit area (m3·s−1·m−2).[Wikipedia]
Applicable units are those of quantitykind:VolumetricFlux
Volumic Electromagnetic Energy
$\textit{Volumic Electromagnetic Energy}$, also known as the $\textit{Electromagnetic Energy Density}$, is the energy associated with an electromagnetic field, per unit volume of the field.
Applicable units are those of quantitykind:VolumicElectromagneticEnergy
Warping Constant
The "Warping Constant" is a measure for the warping constant or warping resistance of a cross section under torsional loading. It is usually measured in m⁶.
Applicable units are those of quantitykind:WarpingConstant
Warping Moment
The warping moment measure is a measure for the warping moment, which occurs in warping torsional analysis. It is usually measured in kNm².
Applicable units are those of quantitykind:WarpingMoment
water vapour permeability
mass of water vapour passing a surface divided by the area of this surface, the pressure difference, and the corresponding time
Masse des durch eine Fläche hindurchtretenden Wasserdampfes, dividiert durch den Flächeninhalt dieser Fläche, die Druckdifferenz und die dazugehörige Zeit
Applicable units are those of quantitykind:WaterVapourPermeability
práce
Arbeit
work
trabajo
کار
travail
कार्य
lavoro
仕事量
kerja
praca
trabalho
lucru mecanic
delo
$\textit{Work}$ or $net\ work$ is equal to the change in kinetic energy. This relationship is called the work-energy theorem: $$Wnet = K. E._f K. E._o $$ where $K. E._f$ is the final kinetic energy and $K. E._o$ is the original kinetic energy. Potential energy, also referred to as stored energy, is the ability of a system to do work due to its position or internal structure. Change in potential energy is equal to work. The potential energy equations can also be derived from the integral form of work: $$\Delta P. E. = W = \int F \cdot dx$$.
$A = \int Pdt$, where $P$ is power and $t$ is time.
A force is said to do Work when it acts on a body so that there is a displacement of the point of application, however small, in the direction of the force. The concepts of work and energy are closely tied to the concept of force because an applied force can do work on an object and cause a change in energy. Energy is defined as the ability to do work. Work is done on an object when an applied force moves it through a distance. Kinetic energy is the energy of an object in motion. The net work is equal to the change in kinetic energy.
$\textit{Ampere Hour per Cubic Decimetre}$ is the product of the SI base unit ampere and the unit hour divided by 0.001-fold of the power of the SI base unit metre with the exponent 3.
product of the SI base unit ampere and the unit hour divided by the SI base unit kilogram
product of the SI base unit ampere and the unit hour divided by the power of the SI base unit metre with the exponent 3
Ampere Square Metre
Ampere Square Meter
Ampere Square Metre per Joule Second
Ampere Square Meter per Joule Second
Ampere Turn per Inch
The $\textit{Ampere Turn per Inch}$ is a measure of magnetic field intensity and is equal to 12.5664 Oersted.
Ampere Turn per Metre
Ampere Turn per Meter
The $\textit{Ampere Turn per Metre}$ is the SI unit of magnetic field strength. One ampere per meter is equal to $\pi/250$ oersteds (12.566 371 millioersteds) in CGS units. The ampere per meter is also the SI unit of "magnetization" in the sense of magnetic dipole moment per unit volume; in this context $1 A/m = 0.001 emu per cubic centimeter$.
Abampere Square centimetre
Abampere Square centimeter
The unit $\textit{Abampere Square Centimeter}$ is the unit of magnetic moment in the electromagnetic centimeter-gram-second system.
Ban
A $\textit{ban}$ is a logarithmic unit which measures information or entropy, based on base 10 logarithms and powers of 10, rather than the powers of 2 and base 2 logarithms which define the bit. One $\textit{ban}$ is approximately $3.32 (log_2 10) bits$.
Brewster
The brewster (B) is a non-SI unit used to measure the susceptibility of a material to photoelasticity, or the value of the stress-optic coefficient of the material. The unit has dimensions reciprocal to those of stress. One brewster is defined to be equal to 10^-12 square metres per newton (m^2/N or 1/Pa) or 10^-13 square centimetres per dyne (cm^2/dyn). The unit is named after David Brewster, who discovered stress-induced birefringence in 1816.
unit of heat energy according to the Imperial system of units in a reference temperature of 39 °F
unit of heat energy according to the Imperial system of units in a reference temperature of 59 °F
unit of head energy according to the Imperial system of units at a reference temperature of 60 °F
British Thermal Unit (international Table) Inch per Hour Square Foot Degree Fahrenheit
$BTU_{th}$ Inch per Square Foot Hour Degree Fahrenheit is an Imperial unit for 'Thermal Conductivity' expressed as $Btu_{it}-in/(h-ft^{2}-degF)$. An International British thermal unit inch per second per square foot per degree Fahrenheit is a unit of thermal conductivity in the US Customary Units and British Imperial Units. $1\,Btu_{it} \cdot in/(h \cdot ft^{2} \cdot degF)$ shows that one thermochemical BTU of heat per one hour moves through one square foot of material, which is one foot thick due to a temperature difference of one degree Fahrenheit.
$Btu_{it} \cdot in/(h \cdot ft^{2} \cdot degF)$
BTU (th) Inch per Square Foot Hour Degree Fahrenheit is an Imperial unit for 'Thermal Conductivity', an International British thermal unit inch per second per square foot per degree Fahrenheit is a unit of thermal conductivity in the US Customary Units and British Imperial Units.
qudt:exactMatch: unit:BTU_IT-IN-PER-HR-FT2-DEG_F
BTU (IT) Inch per Square Foot Second Degree Fahrenheit
The unit $BTU_{IT}$, Inch per Square Foot Second Degree Fahrenheit, is an Imperial unit for 'Thermal Conductivity' expressed as $Btu_{it}-in/(ft^{2}-s-degF)$.
British thermal unit (international table) inch per second Square foot degree Fahrenheit is the unit of the thermal conductivity according to the Imperial system of units.
British Thermal Unit (international Table) Inch per Second Square Foot degree Fahrenheit
BTU per Pound Degree Rankine
${\bf BTU \, per \, Pound \, Degree \, Rankine}$ is a unit for 'Specific Heat Capacity' expressed as $Btu/(lb-degR)$.
British Thermal Unit (mean)
unit of the heat energy according to the Imperial system of units
unit byte divided by the SI base unit second
كولوم متر
coulomb metr
Coulombmeter
coulomb metre
Coulomb Meter
culombio metro
نیوتون متر
coulomb-mètre
कूलम्ब मीटर
coulomb per metro
クーロンメートル
coulomb meter
coulomb-metro
coulomb-metru
кулон-метр
库伦米
The $\text{Coulomb Meter (C-m)}$ is a unit in the category of Electric dipole moment. It is also known as atomic unit, u.a., au, ua. This unit is commonly used in the SI unit system. Coulomb Meter (C-m) has a dimension of LTI where $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Coulomb per Kilogram
$\textit{Coulomb Per Kilogram (C/kg)}$ is the unit in the category of Exposure. It is also known as coulombs per kilogram, coulomb/kilogram. This unit is commonly used in the SI unit system. Coulomb Per Kilogram (C/kg) has a dimension of $M^{-1}TI$ where $M$ is mass, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Coulomb per Metre
Coulomb per Meter
"Coulomb per Meter" is a unit for 'Electric Charge Line Density' expressed as $C/m$.
Coulomb per Cubic Metre
Coulomb per Cubic Meter
Coulomb Per Cubic Meter ($C/m^{3}$) is a unit in the category of Electric charge density. It is also known as coulomb per cubic metre, coulombs per cubic meter, coulombs per cubic metre, coulomb/cubic meter, coulomb/cubic metre. This unit is commonly used in the SI unit system. Coulomb Per Cubic Meter has a dimension of $L^{-3}TI$ where $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Calorie (15 Degrees C)
unit for the quantity of heat which is required to warm up 1 g of water, which is free of air, at a constant pressure of 101.325 kPa (the pressure of the standard atmosphere on sea level) from 14.5 degrees Celsius to 15.5 degrees Celsius
unit for quantity of heat, which is to be required for 1 g air free water at a constant pressure from 101,325 kPa, to warm up the pressure of standard atmosphere at sea level, from 19.5 °C on 20.5 °C
Calorie (mean)
unit used particularly for calorific values of foods
Aruban Guilder
The unit for $\textit{American Wire Gage}$, symbol $AWG$, is for the standard nominal diameters and cross-sectional areas of American Wire Gage sizes of solid round wires used as electrical conductors.
Curie
The curie (symbol Ci) is a non-SI unit of radioactivity, named after Marie and Pierre Curie. It is defined as $1Ci = 3.7 \times 10^{10} decays\ per\ second$. Its continued use is discouraged. One Curie is roughly the activity of 1 gram of the radium isotope Ra, a substance studied by the Curies. The SI derived unit of radioactivity is the becquerel (Bq), which equates to one decay per second. Therefore: $1Ci = 3.7 \times 10^{10} Bq= 37 GBq$ and $1Bq \equiv 2.703 \times 10^{-11}Ci $.
US Liquid Cup
"US Liquid Cup" is a unit for 'Liquid Volume' expressed as $cup$.
Cup (US)
unit of the volume according to the Anglo-American system of units
Square centimetres per gram
Square centimeters per gram
0.0001-fold of the power of the SI base unit metre by exponent 2 divided by the 0.001-fold SI base unit kilogram
square centimetre per volt second
Square Centimeter per Volt Second
Cubic Centimetre per Mole
Cubic Centimeter per Mole
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit mol
0.000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit mol
Cubic Centimeter per Mole Second
A unit that is the 0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit mol multiplied by the SI base unit second.
Darcy
The $darcy$ (d) is a unit of permeability named after Henry Darcy. It is not an SI unit, but it is widely used in petroleum engineering and geology. The unit has also been used in biophysics and biomechanics, where the flow of fluids such as blood through capillary beds and cerebrospinal fluid through the brain interstitial space is being examined. A darcy has dimensional units of length2.
The darcy (d) is a unit of permeability named after Henry Darcy. It is not an SI unit, but it is widely used in petroleum engineering and geology. The unit has also been used in biophysics and biomechanics, where the flow of fluids such as blood through capillary beds and cerebrospinal fluid through the brain interstitial space is being examined. A darcy has dimensional units of length².
Degree Celsius per Hour
$\textit{Degree Celsius per Hour}$ is a unit for 'Temperature Per Time' expressed as $degC / h$.
Degree Celsius per Minute
$\textit{Degree Celsius per Minute}$ is a unit for 'Temperature Per Time' expressed as $degC / m$.
Degree Celsius per Second
$\textit{Degree Celsius per Second}$ is a unit for 'Temperature Per Time' expressed as $degC / s$.
Degrees Celsius per year
A rate of change of temperature expressed on the Celsius scale over a period of an average calendar year (365.25 days).
Degree Fahrenheit per Hour
$\textit{Degree Fahrenheit per Hour}$ is a unit for 'Temperature Per Time' expressed as $degF / h$.
Degree Fahrenheit per Minute
$\textit{Degree Fahrenheit per Minute}$ is a unit for 'Temperature Per Time' expressed as $degF / m$.
Degree Fahrenheit per Second
$\textit{Degree Fahrenheit per Second}$ is a unit for 'Temperature Per Time' expressed as $degF / s$.
Degree Rankine per Hour
The unit $\textit{Degree Rankine per Hour}$ is a rate of change of temperature measured in degree Rankine in periods of one hour.
Degree Rankine per Minute
The unit $\textit{Degree Rankine per Minute}$ is a rate of change of temperature measured in degree Rankine in periods of one minute.
Degree Rankine per Second
The unit $\textit{Degree Rankine per Second}$ is a rate of change of temperature measured in degree Rankine in periods of one second.
Dots per Inch
point density as amount of the picture base element divided by the unit inch according to the Anglo-American and the Imperial system of units
Dyne Second per Cubic Centimetre
Dyne Second per Cubic Centimeter
CGS unit of the acoustic image impedance of the medium
Dekapoise
Decapoise
10-fold of the CGS unit of the dynamic viscosity poise
Cubic Decimetre per Mole
Cubic Decimeter per Mole
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit mol
unit to express the catalytic activity of a specified chemical redation
Erlang
The "Erlang" is a dimensionless unit that is used in telephony as a measure of offered load or carried load on service-providing elements such as telephone circuits or telephone switching equipment.
Electron Volt per Tesla
The unit $\textit{Electron Volt per Tesla}$ is a unit for $\textit{Magnetic Dipole Moment}$ expressed as $eV T^{-1}$.
ExaByte
The exabyte is a multiple of the unit byte for digital information. The prefix exa means 10^18 in the International System of Units (SI), so ExaByte is 10^18 Bytes.
ExbiByte
The exbibyte is a multiple of the unit byte for digital information. The prefix exbi means 1024^6
Abfarad
An abfarad is an obsolete electromagnetic (CGS) unit of capacitance equal to $10^{9}$ farads (1,000,000,000 F or 1 GF). The absolute farad of the e.m.u. system, for a steady current identically $abC/abV$, and identically reciprocal abdaraf. 1 abF = 1 GF.
unit of the dynamic viscosity as a quotient of the 0.001-fold of the SI base unit kilogram divided by the 0.01-fold of the SI base unit metre and SI base unit second
Grams per square centimetre year
A rate of change of 0.001 of the SI unit of mass over 0.00001 of the SI unit of area in a period of an average calendar year (365.25 days)
Grams per square meter per hour
0.0001-fold of the SI base unit kilogram divided by the SI base unit meter with the exponent 2 over a period of 1 hour
grams per square metre per year
grams per square meter per year
A metric unit of volume over time indicating the amount generated across one square meter over a year (365.25 days).
A metric unit of volume over time indicating the amount generated across one square meter over a year.
grams Carbon per square metre day
grams Carbon per square meter day
A metric unit of volume over time indicating the amount generated across one square meter over a day. Used to express productivity of an ecosystem.
grams Nitrogen per square metre day
grams Nitrogen per square meter day
A metric unit of volume over time indicating the amount of Nitrogen generated across one square meter over a day. Used to express productivity of an ecosystem.
GibiByte
The gibibyte is a multiple of the unit byte for digital information storage. The prefix gibi means 1024^3
1,000,000,000-fold of the unit byte divided by the SI base unit second
Gigapascal Cubed Centimetre per Gram
Gigapascal Cubed Centimeter per Gram
Henry per Metre
Henry per Meter
The henry per meter (symbolized $H/m$) is the unit of magnetic permeability in the International System of Units ( SI ). Reduced to base units in SI, $1\,H/m$ is the equivalent of one kilogram meter per square second per square ampere.
Hertz per Tesla
"Hertz per Tesla" is a unit for 'Electric Charge Per Mass' expressed as $Hz T^{-1}$.
Stathenry per Centimetre
Stathenry per Centimeter
The Stathenry per Centimeter is a unit of measure for the absolute permeability of free space.
جول لكل كلفن
joule na kelvin
Joule je Kelvin
joule per kelvin
julio por kelvin
ژول بر کلوین
joule par kelvin
जूल प्रति कैल्विन
joule al kelvin
ジュール毎立方メートル
dżul na kelwin
joule por kelvin
joule pe kelvin
джоуль на кельвин
joule bölü kelvin
焦耳每开尔文
Joule Per Kelvin (J/K) is a unit in the category of Entropy. It is also known as joules per kelvin, joule/kelvin. This unit is commonly used in the SI unit system. Joule Per Kelvin (J/K) has a dimension of $ML^{2}T^{-2}Q^{-1}$ where $M$ is mass, $L$ is length, $T$ is time, and Q is temperature. This unit is the standard SI unit in this category.
Joule per Metre
Joule per Meter
Joule per Mole Kelvin
Energy needed to heat one mole of substance by 1 Kelvin, under standard conditions (not standard temperature and pressure STP). The standard molar entropy is usually given the symbol S, and has units of joules per mole kelvin ( $ J\cdot mol^{-1} K^{-1}$). Unlike standard enthalpies of formation, the value of S is an absolute. That is, an element in its standard state has a nonzero value of S at room temperature.
جول لكل تسلا
joule na tesla
Joule je Tesla
joule per tesla
julio por tesla
ژول بر تسلا
joule par tesla
जूल प्रति टैस्ला
joule al tesla
dżul na tesla
joule por tesla
joule pe tesla
джоуль на тесла
joule bölü tesla
焦耳每特斯拉
The magnetic moment of a magnet is a quantity that determines the force that the magnet can exert on electric currents and the torque that a magnetic field will exert on it. A loop of electric current, a bar magnet, an electron, a molecule, and a planet all have magnetic moments. The unit for magnetic moment is not a base unit in the International System of Units (SI) and it can be represented in more than one way. For example, in the current loop definition, the area is measured in square meters and I is measured in amperes, so the magnetic moment is measured in ampere-square meters (A m2). In the equation for torque on a moment, the torque is measured in joules and the magnetic field in tesla, so the moment is measured in Joules per Tesla (J u00b7T-1). These two representations are equivalent: 1 A u00b7m2 = 1 J u00b7T-1.
Kelvin per Hour
$\textit{Kelvin per Hour}$ is a unit for 'Temperature Per Time' expressed as $K / h$.
Kelvin per Minute
$\textit{Kelvin per Minute}$ is a unit for 'Temperature Per Time' expressed as $K / m$.
Kelvin per Second
$\textit{Kelvin per Second}$ is a unit for 'Temperature Per Time' expressed as $K / s$.
Kayser
KibiByte
The kibibyte is a multiple of the unit byte for digital information equivalent to 1024 bytes.
Kilobecquerel
1 000-fold of the SI derived unit becquerel
Kilocalorie (mean)
1000-fold of the unit calorie, which is used particularly for calorific values of food
Kilocurie
kilogram per hectare per year
A measure of areal density over time equivalent to 1 kg per hectare per year.
Kilogram per Hour
Kilogram Per Hour (kg/h) is a unit in the category of Mass flow rate. It is also known as kilogram/hour. Kilogram Per Hour (kg/h) has a dimension of MT-1 where $M$ is mass, and $T$ is time. It can be converted to the corresponding standard SI unit kg/s by multiplying its value by a factor of 0.000277777777778.
Kilogram per Metre
Kilogram per Meter
Kilogram Per Meter (kg/m) is a unit in the category of Linear mass density. It is also known as kilogram/meter, kilogram/metre, kilograms per meter, kilogram per metre, kilograms per metre. This unit is commonly used in the SI unit system. Kilogram Per Meter (kg/m) has a dimension of ML-1 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
unit of the dynamic viscosity as a quotient SI base unit kilogram divided by the SI base unit metre and by the unit day
Kilograms per metre hour
One SI standard unit of mass over one SI standard unit of length over 3600 times one SI standard unit of time.
unit of the dynamic viscosity as a quotient SI base unit kilogram divided by the SI base unit metre and by the unit minute
kilogram per square metre per day
kilogram per square meter per day
A measure of areal density over time equivalent to 1 kg per square meter per day.
Kilograms per square metre Pascal second
unit for the ability of a material to allow the transition of the steam
Kilogram per Millimetre
Kilogram per Millimeter
SI base unit kilogram divided by the 0.001-fold of the SI base unit metre
kilogram na pascal sekunda metr
Kilogramm je Pascal Sekunde Meter
kilogram per pascal second metre
kilogramo por pascal segundo metro
kilogramme par pascal-seconde-mètre
chilogrammo al pascal secondo metro
kilogram per pascal saat meter
kilogram na paskalosekundaometr
quilograma por pascal segundo metro
kilogram pe pascal-secundă-metru
килограмм на паскаль-секунда-метр
kilogram na pascal sekunda meter
kilogram per pascal saniye metre
Common unit for the Water vapour diffusion coefficient
Kilogram per Second
Kilogram Per Second (kg/s) is a unit in the category of Mass flow rate. It is also known as kilogram/second, kilograms per second. This unit is commonly used in the SI unit system. Kilogram Per Second (kg/s) has a dimension of $MT^{-1}$ where $M$ is mass, and $T$ is time. This unit is the standard SI unit in this category.
Kilojoule per Kelvin
1 000-fold of the SI derived unit joule divided by the SI base unit kelvin
1,000-fold of the unit of the mass avoirdupois pound according to the avoirdupois unit system divided by the unit hour
Pound Force Foot per Ampere
product of the Anglo-American unit pound-force and foot divided by the SI base unit ampere
Kilolumen
kilolumen
Square kilometres per square second
Square Kilometers per Square Second
Kiloroentgen
Litre per Mole
Liter per Mole
unit litre divided by the SI base unit mol
0.001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the SI base unit mol and the SI base unit second
Litres per micromole
The inverse of a molar concentration.
unit of the dynamic viscosity according to the Anglo-American unit system
Pound per Foot Hour
"Pound per Foot Hour" is an Imperial unit for 'Dynamic Viscosity' expressed as $lb/(ft-h)$.
Pound per Foot Second
"Pound per Foot Second" is an Imperial unit for 'Dynamic Viscosity' expressed as $lb/(ft-s)$.
Pound per Hour
Pound per hour is a mass flow unit. It is abbreviated as PPH or more conventionally as lb/h. Fuel flow for engines is usually expressed using this unit, it is particularly useful when dealing with gases or liquids as volume flow varies more with temperature and pressure. $1 lb/h = 0.4535927 kg/h = 126.00 mg/s$. Minimum fuel intake on a jumbojet can be as low as 150 lb/h when idling, however this is not enough to sustain flight.
Pound per Minute
"Pound per Minute" is an Imperial unit for 'Mass Per Time' expressed as $lb/min$.
Pound Force Second per Square Foot
"Pound Force Second per Square Foot" is an Imperial unit for 'Dynamic Viscosity' expressed as $lbf-s/ft^{2}$.
Pound Force Second per Square Inch
"Pound Force Second per Square Inch" is an Imperial unit for 'Dynamic Viscosity' expressed as $lbf-s/in^{2}$.
Metres per hectare
A rate of change of SI standard unit length per hectare (squared hectometer) area.
Metres per square metre
Meters per square meter
A rate of change of SI standard unit length per squared meter area.
Square Metre Kelvin per Watt
Square Meter Kelvin per Watt
$\textit{Square Meter Kelvin per Watt}$ is a unit for 'Thermal Insulance' expressed as $(K^{2})m/W$.
Square Metre per Mole
Square Meter per Mole
Square Meter Per Mole (m2/mol) is a unit in the category of Specific Area. It is also known as square meters per mole, square metre per per, square metres per per, square meter/per, square metre/per. This unit is commonly used in the SI unit system. Square Meter Per Mole (m2/mol) has a dimension of M-1L2 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
square metre per square second kelvin
Unit for expressing the specific heat capacity.
Quadratmeter je Volt und Sekunde
square metre per volt second
Square Meter per Volt Second
metro quadrato al volt e al secondo
متر مكعب لكل مول
metr krychlový na mol
Kubikmeter je Mol
cubic metre per mole
Cubic Meter per Mole
metro cúbico por mol
متر مکعب بر مول
mètre cube par mole
घन मीटर प्रति मोल (इकाई)
metro cubo alla mole
立方メートル 毎立方メートル
meter kubik per mole
metr sześcienny na mol
metru cub pe mol
кубический метр на моль
kubični meter na mol
metreküp bölü metre küp
立方米每摩尔
The molar volume, symbol $Vm$, is the volume occupied by one mole of a substance (chemical element or chemical compound) at a given temperature and pressure. It is equal to the molar mass (M) divided by the mass density. It has the SI unit cubic metres per mole $m3/mol$, although it is more practical to use the units cubic decimetres per mole $dm3/mol$ for gases and cubic centimetres per mole $cm3/mol$ for liquids and solids .
Cubic Metre per Mole Second
Cubic Meter per Mole Second
A unit that is the SI base unit metre with the exponent 3 divided by the SI base unit mol multiplied by the SI base unit second.
Mesh
"Mesh" is a measure of particle size or fineness of a woven product.
Statmho
"StatMHO" is the unit of conductance, admittance, and susceptance in the C.G.S e.s.u system of units. One $statmho$ is the conductance between two points in a conductor when a constant potential difference of $1 \; statvolt$ applied between the points produces in the conductor a current of $1 \; statampere$, the conductor not being the source of any electromotive force, approximately $1.1126 \times 10^{-12} mho$.
Maxwell
"Maxwell" is a C.G.S System unit for 'Magnetic Flux' expressed as $Mx$.
Mebibyte
The mebibyte is a multiple of the unit byte for digital information equivalent to $1024^{2} bytes$ or $2^{20} bytes$.
Megabecquerel
1,000,000-fold of the derived unit becquerel
1,000,000-fold of the unit byte devided by the SI base unit second
Mega Electron Volt per Speed of Light
"Mega Electron Volt per Speed of Light" is a unit for 'Linear Momentum' expressed as $MeV/c$.
Mega Hertz per Tesla
"Mega Hertz per Tesla" is a unit for 'Electric Charge Per Mass' expressed as $MHz T^{-1}$.
1,000,000-fold of the product of the SI derived unit ohm and the 1,000-fold of the SI base unit metre
Micrograms per square centimetre week
Micrograms per square centimeter week
A rate of change of 1e-9 of the SI unit of mass over 0.00001 of the SI unit of area in a period of one calendar week.
Micrograms per square metre day
Microhenry per Metre
Microhenry per Meter
0.000001-fold of the SI derived unit henry divided by the SI base unit metre
Micromoles per litre day
Micromho
0.000001-fold of the obsolete unit mho of the electric conductance
Microohm
0.000001-fold of the SI derived unit ohm
Micropoise
0.000001-fold of the CGS unit of the dynamic viscosity poise
Microsiemens per Centimetre
Microsiemens per Centimeter
0.000001-fold of the SI derived unit Siemens divided by the 0.01-fold of the SI base unit metre
Unit of electrical conductivity equal to 0.000001-fold of the SI derived unit siemens divided by 0,01-fold of the SI base unit meter
Millicoulomb per Kilogram
0.001-fold of the SI derived unit coulomb divided by the SI base unit kilogram
Milligrams per square metre day
Milligrams per square metre hour
Milligrams per square metre second
Millimole per Gram
0.001-fold of the SI base unit mol divided by the 0.001-fold of the SI base unit kilogram
Millimole per Kilogram
0.001-fold of the SI base unit mol divided by the SI base unit kilogram
Millipascal Second
0.001-fold of the product of the SI derived unit pascal and the SI base unit second
Milliroentgen
MilliRad
Milliweber
Newton Metre per Ampere
Newton Meter per Ampere
product of the SI derived unit newton and the SI base unit metre divided by the SI base unit ampere
Newton Metre per Metre Radian
Newton Meter per Meter Radian
Newtonmetersekunden pro Meter
Newton metre seconds per metre
Newton meter seconds per meter
Newton Metre Squared per Ampere
Newton Meter Squared per Ampere
product of the SI derived unit newton and the power of SI base unit metre with exponent 2 divided by the SI base unit ampere
Newton pro Radian
Newton per radian
A one-newton force applied for one angle/torsional torque
نيوتن ثانية
newton sekunda
Newtonsekunde
newton second
newton segundo
نیوتون ثانیه
newton-seconde
न्यूटन सैकण्ड
newton per secondo
ニュートン秒
newton saat
niutonosekunda
newton-segundo
newton-secundă
ньютон-секунда
newton saniye
牛秒
product of the SI derived unit newton and the SI base unit second
unit of the dynamic viscosity as a product of unit of the pressure (newton by square metre) multiplied with the SI base unit second
Number per gram
Number per square metre
Number per milligram
Count of an entity or phenomenon occurrence in one millionth of the SI unit of mass (kilogram).
NanoBecquerel
Nanofarad
A common metric unit of electric capacitance equal to $10^{-9} farad$. This unit was previously called the $millimicrofarad$.
Nanogram per Square Centimetre Day
Nanogram per Square Centimeter Day
A rate of change of 1e-12 of the SI unit of mass over 0.00001 of the SI unit of area in a period of one day.
Nanohenry per Metre
Nanohenry per Meter
0.000000001-fold of the SI derived unit henry divided by the SI base unit metre
Nanometer per Millimeter Megapascal
0.000000001-fold of the SI derived unit ohm
synonym for byte: 1 octet = 8 bit = 1 byte
unit octet divided by the SI base unit second
product of the SI derived unit ohm and the 1,000-fold of the SI base unit metre
أوم متر
ohm metr
Ohmmeter
ohm metre
Ohm Meter
ohmio metro
اهم متر
ohm-mètre
ओह्म मीटर
ohm per metro
オームメートル
ohm meter
ohm-metro
ohm-metru
ом-метр
欧姆米
باسكال ثانية
pascal sekunda
Pascalsekunde
pascal second
pascal segundo
pascal-seconde
पास्कल सैकण्ड
pascal per secondo
パスカル秒
pascal saat
paskalosekunda
pascal-segundo
pascal-secundă
паскаль-секунда
pascal saniye
帕斯卡秒
The SI unit of dynamic viscosity, equal to 10 poises or 1000 centipoises.
Pascal Second per Metre
Pascal Second per Meter
Pascal Second Per Meter ($Pa-s/m$) is a unit in the category of Specific acoustic impedance. It is also known as pascal-second/meter. Pascal Second Per Meter has a dimension of $ML^2T^{-1}$ where $M$ is mass, $L$ is length, and $T$ is time. It essentially the same as the corresponding standard SI unit $kg/m2\cdot s$.
non SI-conforming unit of dynamic viscosity according to the Imperial system of units as product unit of the pressure (poundal by square inch) multiplied by the SI base unit second
Reciprocal Angstrom
Reciprocal Centimetre
Reciprocal Centimeter
reciprocal of the 0.01-fold of the SI base unit metre
Reciprocal Cubic Centimetre
Reciprocal Cubic Centimeter
reciprocal of the 0.000001-fold of the power of the SI base unit metre with the exponent 3
Reciprocal Cubic Foot
reciprocal value of the power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3
Reciprocal gram
reciprocal of the 0.001-fold of the SI base unit kilogram
Reciprocal Cubic Inch
reciprocal value of the power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3
reciprocal of the 1,000-fold of the product of the SI derived unit volt ampere and the unit hour
Reciprocal Square Metre
Reciprocal Square Meter
"Per Square Meter" is a denominator unit with dimensions $/m^2$.
Reciprocal Square Metre Second
Reciprocal Square Meter Second
Reciprocal square metre per second
Reciprocal Cubic Metre Second
Reciprocal Cubic Meter Second
unit of the slowing-down density as reciprocal of the power of the SI base unit metre with exponent 3 divided by the SI base unit second
Reciprocal cubic metre per second
reciprocal of the 0.000001-fold of the SI base unit kilogram
Reciprocal Millilitre
Reciprocal Milliliter
Reciprocal Second Steradian
Per Second Steradian Unit is a denominator unit with dimensions $/sec-sr$.
Reciprocal Tesla Second Unit
Per Tesla Second Unit is a denominator unit with dimensions $/s . T$.
reciprocal of the product of the SI derived unit volt ampere and the SI base unit second
Reciprocal Cubic Yard
reciprocal value of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3
traditional unit for the ability of a material to allow the transition of the steam, defined at a temperature of 0 °C as steam transmittance, where the mass of one grain steam penetrates an area of one foot squared at a pressure from one inch mercury per hour
traditional unit for the ability of a material to allow the transition of the steam, defined at a temperature of 23 °C as steam transmittance at which the mass of one grain of steam penetrates an area of one square foot at a pressure of one inch mercury per hour
In chemistry the unit $\textit{pH}$, also referred to as $\textit{acidity}$ or $\textit{basicity}$, is the negative logarithm (base 10) of the concentration of free protons (or hydronium ions). The definition of $pH$ in terms of hydrogen ions in solution is: $$\text{pH}=-\log_{10}(a_{H^+})\equiv-\log_{10}\left(\left[H^+\right]\right)$$ Where $a_{H^+}$ is the equilibrium molar concentration of $H^+$ in the solution, the activity of the hydrogen ion in the solution. $$$$ This definition is appropriate for concentrations equal to, or less than $1\ mol/l$, where $aH+ \equiv [H+]$, that is, $1\ mol/L\ HCl$ has a $pH$ of zero. $$$$ To relate this to standard molality ($b^\circ$), typically taken as $1 \ mol/kg$, consideration is given to the activity ($a_{H^+}$) of the hydrogen ions. $$$$ The activity can be expressed as: $$a_{H^+} = \gamma_{H^+} \times m_{H^+}$$ Where, $\gamma_{H^+}$ is the activity coefficient, which adjusts the molality to account for non-ideal behavior due to interactions between ions in the solution. $m_{H^+}$ is the molality of hydrogen ions in the solution relative to the standard molality, expressed in $mol/kg$. $$$$ The expansion of $pH$ then becomes: $$\text{pH} = -log_{10}\left(m_{H+}\times\gamma_{H^+}\right)$$ $$$$ This definition is relevant in more concentrated solutions or when precise thermodynamic calculations are required. It reflects how the properties of the solution deviate from ideal behavior and provides a more accurate understanding of the $pH$ under various conditions. $$$$ While $pH$ is a universally recognized scale for expressing hydrogen ion activity, its appropriateness and accuracy can diminish under conditions of extremely high ionic strength, non-aqueous environments, high temperatures, or very high or low $pH$ values. In such cases, alternative measurement strategies might be required to obtain meaningful and accurate descriptions of acidity or basicity.
Unsure about dimensionality of pH; conversion requires a log function not just a multiplier
unit for the type size correspondening to: 1 bp = 1/72 in
PebiByte
The pebibyte is a standards-based binary multiple (prefix pebi, symbol Pi) of the byte, a unit of digital information storage. The pebibyte unit symbol is PiB. 1 pebibyte = 1125899906842624bytes = 1024 tebibytes The pebibyte is closely related to the petabyte, which is defined as $10^{15} bytes = 1,000,000,000,000,000 bytes$.
PetaByte
A petabyte is a unit of information equal to one quadrillion bytes, or 1024 terabytes. The unit symbol for the petabyte is PB. The prefix peta (P) indicates the fifth power to 1000: 1 PB = 1000000000000000B, 1 million gigabytes = 1 thousand terabytes The pebibyte (PiB), using a binary prefix, is the corresponding power of 1024, which is more than $12\% $greater ($2^{50} bytes = 1,125,899,906,842,624 bytes$).
Picofarad
"PicoF" is a common unit of electric capacitance equal to $10^{-12} farad$. This unit was formerly called the micromicrofarad.
Picohenry
0.000000000001-fold of the SI derived unit henry
Planck Current
The Planck current is the unit of electric current, denoted by IP, in the system of natural units known as Planck units. $\approx 3.479 \times 10 A$, where: the Planck time is the permittivity in vacuum and the reduced Planck constant G is the gravitational constant c is the speed of light in vacuum. The Planck current is that current which, in a conductor, carries a Planck charge in Planck time. Alternatively, the Planck current is that constant current which, if maintained in two straight parallel conductors of infinite length and negligible circular cross-section, and placed a Planck length apart in vacuum, would produce between these conductors a force equal to a Planck force per Planck length.
Planck Momentum
Planck momentum is the unit of momentum in the system of natural units known as Planck units. It has no commonly used symbol of its own, but can be denoted by, where is the Planck mass and is the speed of light in a vacuum. Then where is the reduced Planck's constant, is the Planck length, is the gravitational constant. In SI units Planck momentum is $\approx 6.5 kg m/s$.
Rad
The $rad$ is a deprecated unit of absorbed radiation dose, defined as $1 rad = 0.01\,Gy = 0.01 J/kg$. It was originally defined in CGS units in 1953 as the dose causing 100 ergs of energy to be absorbed by one gram of matter. It has been replaced by the gray in most of the world. A related unit, the $roentgen$, was formerly used to quantify the number of rad deposited into a target when it was exposed to radiation. The F-factor can used to convert between rad and roentgens. The material absorbing the radiation can be human tissue or silicon microchips or any other medium (for example, air, water, lead shielding, etc.).
Revolution per Hour
"Revolution per Hour" is a unit for 'Angular Velocity' expressed as $rev/h$.
Revolution per Minute
"Revolution per Minute" is a unit for 'Angular Velocity' expressed as $rev/min$. One revolution per minute is equivalent to 1/60 hertz.
Revolution per Second
"Revolution per Second" is a unit for 'Angular Velocity' expressed as $rev/s$.
Slug per Foot Second
$\textit{Slug per Foot Second}$ is a unit for 'Dynamic Viscosity' expressed as $slug/(ft-s)$.
Slug per Second
"Slug per Second" is an Imperial unit for 'Mass Per Time' expressed as $slug/s$.
Statsiemens
The unit of conductance, admittance, and susceptance in the centimeter-gram-second electrostatic system of units.
Tonne per Day
metric unit tonne divided by the unit for time day
unit ton divided by the product of the unit day and the unit bar
unit ton divided by the product of the unit day and the SI base unit Kelvin
Tonne per Hour
unit tonne divided by the unit for time hour
unit ton divided by the product of the unit hour and the unit bar
unit ton divided by the product of the unit hour and the SI base unit Kelvin
unit ton divided by the SI base unit Kelvin
1,000-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
Tonne per Minute
unit tonne divided by the unit for time minute
unit ton divided by the product of the unit minute and the unit bar
unit ton divided by the product of the unit minute and the SI base unit Kelvin
Tonne per Second
unit tonne divided by the SI base unit second
unit ton divided by the product of the SI base unit second and the unit bar
unit ton divided by the product of the SI base unit second and the SI base unit Kelvin
Tonne per Year
Ton per Jaar
1,000-fold of the SI base unit kilogram divided by the unit year
Ton of Refrigeration Hour
metric unit ton divided by the unit for time day
unit ton divided by the unit for time minute
Tonne per Second (metric Ton)
unit ton divided by the SI base unit second
Ton (US) per Hour
unit ton divided by the unit for time hour
TebiByte
The tebibyte is a multiple of the unit byte for digital information. The prefix tebi means 1024^4
TeraByte
The terabyte is a multiple of the unit byte for digital information. The prefix tera means 10^12 in the International System of Units (SI), and therefore 1 terabyte is 1000000000000bytes, or 1 trillion bytes, or 1000 gigabytes. 1 terabyte in binary prefixes is 0.9095 tebibytes, or 931.32 gibibytes. The unit symbol for the terabyte is TB or TByte, but not Tb (lower case b) which refers to terabit.
Unit Pole
A magnetic pole is a unit pole if it exerts a force of one dyne on another pole of equal strength at a distance of 1 cm. The strength of any given pole in cgs units is therefore numerically equal to the force in dynes which it exerts on a unit pole 1 cm away.
Volt per Kelvin
the volt ampere divided by the SI base unit kelvin
Abvolt Second
The magnetic flux whose expenditure in 1 second produces 1 abvolt per turn of a linked circuit. Technically defined in a three-dimensional system, it corresponds in the four-dimensional electromagnetic sector of the SI system to 10 nWb, and is an impractically small unit. In use for some years, the name was agreed by the International Electrotechnical Committee in 1930, along with a corresponding practical unit, the pramaxwell (or pro-maxwell) = $10^{8}$ maxwell.
Weber Metre
Weber Meter
Adjust Sensor
Measures user-provided adjustment of some value
Air Enthalpy Sensor
Measures the total heat content of air
Air Flow Demand Setpoint
Sets the rate of air flow required for a process
Air Flow Setpoint Limit
A parameter that places a lower or upper bound on the range of permitted values of a Air_Flow_Setpoint.
Air Grains Sensor
Measures the mass of water vapor in air
Air Static Pressure Step Parameter
Air Temperature Setpoint Limit
A parameter that places a lower or upper bound on the range of permitted values of a Air_Temperature_Setpoint.
Air Temperature Step Parameter
Alarm Sensitivity Parameter
A parameter indicates the sensitivity to activate an alarm.
Ammonia Concentration
The concentration of Ammonia in a medium
Angle Sensor
Measues the planar angle of some phenomenon
Automated External Defibrillator
Automatic Switch
An automatic switch operates automatically in the event of some current threshold or other designed event. Criteria for automatic operation is generally a physical property of the switch.
Average Supply Air Flow Sensor
The computed average flow of supply air over some interval
Boiler
A closed, pressure vessel that uses fuel or electricity for heating water or other fluids to supply steam or hot water for heating, humidification, or other applications.
Break Room
Bypass Valve
A type of valve installed in a bypass pipeline
Chilled Beam
A device with an integrated coil that performs sensible heating of a space via circulation of room air. Chilled Beams are not designed to perform latent cooling; see Induction Units. Despite their name, Chilled Beams may perform heating or cooling of a space depending on their configuration.
Chilled Water Pump
A pump that performs work on chilled water; typically part of a chilled water system
Coil
Cooling or heating element made of pipe or tube that may or may not be finned and formed into helical or serpentine shape (ASHRAE Dictionary)
Computer Room Air Handler
Condenser Water Pump
A pump that is part of a condenser system; the pump circulates condenser water from the chiller back to the cooling tower
Constant Air Volume Box
A terminal unit for which supply air flow rate is constant and the supply air temperature is varied to meet thermal load
Cooling Coil
A cooling element made of pipe or tube that removes heat from equipment, machines or airflows. Typically filled with either refrigerant or cold water.
Cooling Mode Status
Indicates whether a system, device or control loop is in a cooling mode
Cooling Supply Air Temperature Deadband Setpoint
Sets the size of a deadband of temperature of supply air for cooling
Cooling Supply Air Temperature Integral Time Parameter
Cooling Supply Air Temperature Proportional Band Parameter
Current Output Sensor
Senses the amperes of electrical current produced as output by a device
DDAHU
See Dual_Duct_Air_Handling_Unit
Dedicated Outdoor Air System Unit
A device that conditions and delivers 100% outdoor air to its assigned spaces. It decouples air-conditioning of the outdoor air, usually used to provide minimum outdoor air ventilation, from conditioning of the internal loads.
Differential CO2 Concentration
The difference in carbon dioxide concentration between two areas
Differential CO Concentration
The difference in carbon monoxide concentration between two areas
Differential Entering Leaving Water Temperature Sensor
Measures the difference in temperature between entering and leaving water of water a circuit
Differential Temperature Setpoint
A type of Setpoints that is related to the difference between two temperature measurements
Discharge Water Flow Setpoint
Distribution Frame
A class of spaces where the cables carrying signals meet and connect, e.g. a wiring closet or a broadcast downlink room
Domestic Hot Water Temperature Setpoint
Sets temperature of domestic hot water
Domestic Water
A collection of equipment that transport and regulate domestic water among each other
Dual Duct Air Handling Unit
An air handling unit that contains hot and cold decks to supply heating and cooling to a building
Duct Fan Coil Unit
An inline HVAC component, the Duct Fan Coil Unit is integrated within the ductwork system, rather than within the served space, to distribute conditioned air through ducts to various areas or rooms.
Effective Supply Air Temperature Setpoint
Electric Power Sensor
Measures the amount of instantaneous electric power consumed
Electric Vehicle Charging Hub
A collection of charging stations for charging electric vehicles. A hub may be located in a parking lot, for example
Electric Vehicle Charging Port
An individual point of attachment for charing a single electric vehicle
Electric Vehicle Charging Station
An individual piece of equipment supplying electrical power for charging electric vehicles. Contains 1 or more electric vehicle charging ports
Elevator Shaft
The vertical space in which an elevator ascends and descends
Embedded Surface System Panel
Radiant panel heating and cooling system where the energy heat source or sink is embedded in a radiant layer which is thermally insulated from the building structure.
Emergency Power Off System Status
Energy Sensor
Measures energy consumption
Energy System
A collection of devices that generates, stores or transports electricity
Energy Usage Sensor
Measures the total amount of energy used over some period of time
Entering Water Flow Setpoint
Sets the target flow rate of entering water
Exhaust Air Static Pressure Sensor
The static pressure of air within exhaust regions of an HVAC system
Failure Alarm
Alarms that indicate the failure of devices, equipment, systems and control loops
Fault Status
Indicates the presence of a fault in a device, system or control loop
Filter Differential Pressure Sensor
Measures the difference in pressure on either side of a filter
Flow Setpoint
Sets flow
Formaldehyde Concentration
The concentration of formaldehyde in a medium
Frequency Command
Controls the frequency of a device's operation (e.g. rotational frequency)
Fresh Air Setpoint Limit
A parameter that places a lower or upper bound on the range of permitted values of a Fresh_Air_Setpoint.
Frost
frost formed on the cold surface (tubes, plates) of a cooling coil.
Gauge Pressure Sensor
Pressure sensor which is zero-referenced against ambient air pressure
Hail
pellets of frozen rain which fall in showers from cumulonimbus clouds.
Heat Exchanger Leaving Water Temperature Sensor
Heat Recovery Condensing Unit
An advanced outdoor HVAC unit equipped for both heating and cooling, with the added capability of heat recovery. It efficiently recycles heat from the cooling process for heating purposes, featuring components like a condenser coil, compressor, and heat recovery systems.
Heating Coil
A heating element typically made of pipe, tube or wire that emits heat. Typically filled with hot water, or, in the case of wire, uses electricity.
Heating Mode Status
Indicates whether a system, device or control loop is in a heating mode
Heating Supply Air Temperature Deadband Setpoint
Sets the size of a deadband of temperature of supply air for heating
Heating Supply Air Temperature Integral Time Parameter
Heating Supply Air Temperature Proportional Band Parameter
High Supply Air Temperature Alarm
Hot Water Differential Pressure Sensor
Measures the difference in water pressure on either side of a hot water valve
Hot Water Differential Pressure Setpoint
Sets the target water differential pressure between an upstream and downstream point in a water pipe or conduit used to carry hot water
Hot Water Discharge Temperature Sensor
Hot Water Pump
A pump that performs work on hot water; typically part of a hot water system
Hot Water Return Temperature Sensor
Hot Water Valve
A valve regulating the flow of hot water
Humidity Alarm
An alarm that indicates the off-normal conditions associated with the concentration of water vapor in the air.
Humidity Sensor
Measures the concentration of water vapor in air
Imbalance Sensor
A sensor which measures difference (imbalance) between phases of an electrical system
Integral Gain Parameter
Intercom Equipment
Interface
A device that provides an occupant control over a lighting system
Isolation Switch
See 'Disconnect_Switch'
Leaving Chilled Water Flow Sensor
Measures the rate of flow of chilled leaving water
Leaving Chilled Water Flow Setpoint
Sets the target flow rate of chilled leaving water
Leaving Chilled Water Temperature Sensor
Measures the temperature of chilled water that is supplied from a chiller
Leaving Chilled Water Temperature Setpoint
Temperature setpoint for leaving chilled water
Leaving Condenser Water Flow Sensor
Measures the flow of the leaving condenser water
Leaving Condenser Water Temperature Sensor
Measures the temperature of the leaving condenser water
Leaving Condenser Water Temperature Setpoint
The temperature setpoint for the leaving condenser water
Leaving Domestic Hot Water Temperature Sensor
Measures the temperature of domestic water supplied by a hot water system
Leaving Domestic Hot Water Temperature Setpoint
Sets temperature of leavinging part of domestic hot water
Leaving High Temperature Hot Water Temperature Sensor
Measures the temperature of high-temperature hot water supplied by a hot water system
Leaving Hot Water Flow Sensor
Measures the rate of flow of hot leaving water
Leaving Hot Water Flow Setpoint
Sets the target flow rate of hot leaving water
Leaving Hot Water Temperature Setpoint
Temperature setpoint for leaving hot water
Leaving Medium Temperature Hot Water Temperature Sensor
Measures the temperature of medium-temperature hot water supplied by a hot water system
Lighting
Linear Speed
Load Parameter
Lobby
A space just after the entrance to a building or other space of a building, where visitors can wait
Low Air Flow Alarm
An alarm that indicates that the air flow is lower than normal.
Low Supply Air Flow Alarm
Low Supply Air Temperature Alarm
Makeup Air Unit
A device designed to condition ventilation air introduced into a space or to replace air exhausted from a process or general area exhaust. The device may be used to prevent negative pressure within buildings or to reduce airborne contaminants in a space.
Manual Fire Alarm Activation Equipment
A device for manually activating fire alarm
Max Occupied Cooling Supply Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Occupied_Cooling_Supply_Air_Flow_Setpoint.
Max Occupied Heating Supply Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Occupied_Heating_Supply_Air_Flow_Setpoint.
Max Static Pressure Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Static_Pressure_Setpoint.
Max Supply Air Static Pressure Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Supply_Air_Static_Pressure_Setpoint.
Max Supply Air Temperature Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Supply_Air_Temperature_Setpoint.
Max Temperature Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Temperature_Setpoint.
Max Unoccupied Cooling Supply Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Unoccupied_Cooling_Supply_Air_Flow_Setpoint.
Max Unoccupied Heating Supply Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Unoccupied_Heating_Supply_Air_Flow_Setpoint.
Methane Concentration
The concentration of methane in a medium
Min Occupied Cooling Supply Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Occupied_Cooling_Supply_Air_Flow_Setpoint.
Min Occupied Heating Supply Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Occupied_Heating_Supply_Air_Flow_Setpoint.
Min Static Pressure Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Static_Pressure_Setpoint.
Min Supply Air Static Pressure Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Supply_Air_Static_Pressure_Setpoint.
Min Supply Air Temperature Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Supply_Air_Temperature_Setpoint.
Min Temperature Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Temperature_Setpoint.
Min Unoccupied Cooling Supply Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Unoccupied_Cooling_Supply_Air_Flow_Setpoint.
Min Unoccupied Heating Supply Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Unoccupied_Heating_Supply_Air_Flow_Setpoint.
Mixing Valve
Valve used for mixing hot and cold fluid to a desired temperature.
Motor
A machine in which power is applied to do work by the conversion of various forms of energy into mechanical force and motion.
NO2 Concentration
The concentration of nitrogen dioxide in a medium
Natural Gas Boiler
A closed, pressure vessel that uses natural gas for heating water or other fluids to supply steam or hot water for heating, humidification, or other applications.
Network Video Recorder
Occupancy Count
Number of people in an area
Occupied Cooling Supply Air Flow Setpoint
Sets supply air flow rate for cooling when occupied
Occupied Heating Supply Air Flow Setpoint
Sets supply air flow rate for heating when occupied
Occupied Mode Status
Indicates if a system, device or control loop is in "Occupied" mode
Occupied Supply Air Temperature Setpoint
Oil
a viscous liquid derived from petroleum, especially for use as a fuel or lubricant.
On Status
Indicates if a control loop, relay or equipment is on
On Timer Sensor
Outside Air Lockout Temperature Differential Parameter
Overridden Status
Indicates if the expected operating status of an equipment or control loop has been overridden
Ozone Concentration
PV Array
Packaged Heat Pump
A self-contained unit designed to transfer heat energy to or from a designated space, capable of offering both heating and cooling functions
Phasor Angle
Photovoltaic Array
A collection of photovoltaic panels
Photovoltaic Current Output Sensor
Senses the amperes of electrical current produced as output by a photovoltaic device
Position Command
Controls or reports the position of some object
Position Limit
A parameter that places a lower or upper bound on the range of permitted values of a Position_Setpoint.
Power Sensor
Measures the amount of instantaneous power consumed
Pre-Cooling Air Unit
Precipitation
Amount of atmospheric water vapor fallen including rain, sleet, snow, and hail (https://project-haystack.dev/doc/lib-phScience/precipitation)
Preheat Supply Air Temperature Sensor
Measures the temperature of supply air before it is heated
Pressure Alarm
An alarm that indicates the off-normal conditions associated with pressure.
Pressure Reducing Valve
Valve used to reduce a high supply pressure to a usable level; maintains uniform outlet pressure despite inlet pressure variation.
Pressure Relief Valve
Pressure-actuated valve to automatically relieve excessive pressure; prevents explosive shattering of the housing.
Proportional Gain Parameter
Radiant Ceiling Panel
Radiant panel heating and cooling system that are usually made from metal and suspended under the ceiling or insulated from the building structure.
Radon Concentration
The concentration of radioactivity due to Radon in a medium
Reactive Energy
The integral of the reactive power over a time interval
Refrigerant
A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again.
Restroom
A room that provides toilets and washbowls.
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Bathroom
Return Air Temperature Alarm
An alarm that indicates the off-normal conditions associated with the temperature of return air.
Return Water Temperature Sensor
Rooftop Unit
Packaged air conditioner mounted on a roof, the conditioned air being discharged directly into the rooms below or through a duct system.
Shading Equipment
Site
A geographic region containing 0 or more buildings. Typically used as the encapsulating location for a collection of Brick entities through the hasPart/isPartOf relationships
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Site
Smoke Detection Alarm
Soil
Speed Setpoint Limit
A parameter that places a lower or upper bound on the range of permitted values of a Speed_Setpoint.
Static Pressure Deadband Setpoint
Sets the size of a deadband of static pressure
Static Pressure Integral Time Parameter
Steam Valve
Storage Room
A class of spaces used for storage
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Storage
Storage Tank
A specialized type of tank intended primarily for the storage of fluids or gases for extended periods.
Supply Air Dewpoint Sensor
Supply Air Differential Pressure Sensor
Measures the difference in pressure between an upstream and downstream of an air duct or other air conduit used to supply air into the building
Supply Air Differential Pressure Setpoint
Sets the target air differential pressure between an upstream and downstream point in a supply air duct or conduit
Supply Air Duct Pressure Status
Indicates if air pressure in supply duct is within expected bounds
Supply Air Flow Demand Setpoint
Sets the rate of supply air flow required for a process
Supply Air Flow High Reset Setpoint
Supply Air Flow Low Reset Setpoint
Supply Air Humidity Sensor
Measures the relative humidity of supply air
Supply Air Humidity Setpoint
Humidity setpoint for supply air
Supply Air Integral Gain Parameter
Supply Air Proportional Gain Parameter
Supply Air Smoke Detection Alarm
Supply Air Static Pressure Deadband Setpoint
Sets the size of a deadband of static pressure of supply air
Supply Air Static Pressure Integral Time Parameter
Supply Air Static Pressure Proportional Band Parameter
Supply Air Static Pressure Sensor
The static pressure of air within supply regions of an HVAC system
Supply Air Static Pressure Step Parameter
Supply Air Temperature Cooling Setpoint
Supply Air Temperature Heating Setpoint
Supply Air Temperature High Reset Setpoint
Supply Air Temperature Low Reset Setpoint
Supply Air Temperature Step Parameter
Supply Air Velocity Pressure Sensor
Supply Fan
Fan moving supply air -- air that is supplied from the HVAC system into the building
System Enable Command
Enables operation of a system
Temperature Differential Reset Setpoint
Thermal Energy Storage Tank
A Thermal Energy Storage (TES) tank is a specialized container for storing thermal energy, enabling more efficient heating and cooling by balancing supply and demand. It helps reduce operational costs and minimizes the need for larger equipment.
Thermally Activated Building System Panel
Radiant panel heating and cooling system where the energy heat source or sink is embedded in the building structure such as in slabs and walls.
Time Parameter
Time Setpoint
Tolerance Parameter
difference between upper and lower limits of size for a given nominal dimension or value.
Transfer Switch
An electrical switch that switches a load between two (or more) sources.
Unoccupied Cooling Supply Air Flow Setpoint
Unoccupied Heating Supply Air Flow Setpoint
Unoccupied Mode Status
Unoccupied Supply Air Temperature Setpoint
Variable Air Volume Box With Reheat
A VAV box with a reheat coil mounted on the discharge end of the unit that can heat the air delivered to a zone
Water Differential Pressure Setpoint
Sets the target water differential pressure between an upstream and downstream point in a water pipe or conduit
Water Heater
An apparatus for heating and usually storing hot water
Water Level Sensor
Measures the height/level of water in some container
Water Pressure Sensor
Measures the pressure exerted by water in a system.
Water Temperature Alarm
An alarm that indicates the off-normal conditions associated with temperature of water.
The temperature read by a thermometer covered in water-soaked cloth (wet-bulb thermometer) over which air is passed. A wet-bulb thermometer indicates a temperature close to the true (thermodynamic) wet-bulb temperature. The wet-bulb temperature is the lowest temperature that can be reached under current ambient conditions by the evaporation of water only. DBT is the temperature that is usually thought of as air temperature, and it is the true thermodynamic temperature. It indicates the amount of heat in the air and is directly proportional to the mean kinetic energy of the air molecule. (https://en.wikipedia.org/wiki/Wet-bulb_temperature)
Wind Direction
Direction of wind relative to North
Wing
A wing is part of a building – or any feature of a building – that is subordinate to the main, central structure.
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Wing
aggregationFunction
Has associated tag
The class is associated with the given tag
has sub-meter
Indicates a submeter of this meter
Is associated with
The tag is associated with the given class
Is location of
Subject is the physical location encapsulating the object
is sub-meter of
Indicates the parent for which this meter is a submeter
Is tag of
Latitude
Longitude
Thermal transmittance
The area-weighted average heat transfer coefficient (commonly referred to as a U-value)
Clause Q.8 BACnet URI scheme: bacnet:// <device> / [ / <property> [ / <index> ]]
A reference to the IFC Project that defines this entity
The unique identifier (primary key) for this TimeseriesReference in some database
The location of the IFC file defining a project
preferred
An entity can have one 'preferred' External Reference. Consumers of the model should prioritize any external reference with the 'preferred' property
A reference to where the data for this TimeseriesReference is stored
has Coordinates property
has has electric vehicle charger directionality property
has electrical complex power type property
has Electrical flow direction property
has Volume property
Ablutions
Absolute
Absorption
Acceleration
Activated
Activation
Active
Ammonia
Amount
Audio
Auto
Availability
BACnet
Backflow
Bench
Booth
Branch
Break
Broadcast
Bus
Button
Call
Cassette
Center
Centrifugal
Change
Check
Code
Coldest
Communication
Concentration
Concessions
Condensate
Conditioner
Conference
Constant
Contact
Cooler
Copy
Curtailment
Cutout
Data
Daylight
Deceleration
Dedicated
Defibrillator
Dehumidification
Dehumidify
Deionized
Desk
Detention
Device
Dock
Drench
Driver
Dry
Dual
ESS
Econcycle
Electronic
Employee
Environment
Evaporative
Even
Exercise
Eye
Factor
Field
Final
First
FirstAid
Formaldehyde
Glycool
Group
Handling
Hazardous
Head
Heat_Sink
Hold
Horizontal
Hose
Hospitality
Hub
Humidification
Humidify
IAQ
Induction
Information
Intrusion
Irradiance
Janitor
Jet
Kitchen
Laminar
Last
Loading
Locally
Lowest
Mail
Massage
Materials
Measurable
Medical
Meidcal
Methane
Mixing
Modbus
Month
Motion
Mounted
NO2
Noncondensing
Nozzle
Overload
Ozone
PIR
Passive
Peak
People
Phone
Piezoelectric
Play
Plumbing
Prayer
Pressurization
Preventer
Private
Production
Protect
Pull
Push
Quality
Rack
Radiation
Radon
Rated
Reader
Ready
Real
Recorder
Refrigeration
Remotely
Request
Required
Rest
Retail
Reversing
Router
Sash
Schedule
Seismic
Selector
Shaft
Shared
Short
Shutdown
Shutoff
Sports
Stages
Structure
Suction
Switchgear
TABS
TETRA
Team
Temporary
Terminal
Thermally
Throttling
Ticketing
Timer
Vent
Vibration
Visitor
Visual
Warm
Warmest
Weather
Window
Wireless
Zenith
batteryPercentage
generation
heightRUs
isLocationOf
numberOfPorts
poeType
portSpeed
sourcePoint
standard
wifiSignalStrength
Note that the combination of level, ramp-rate, step-increment, and fade-time fields is dependent on the specific lighting operation. See Table 12-67
This production represents the possible datatypes for properties that have discrete or enumerated values. The choice must be consistent with the datatype of the property referenced in the Event Enrollment Object. Tag values 0-63 are reserved for prototype by ASHRAE. Tag values of 64-254 may be used by others to accommodate vendor specific properties that have discrete or enumerated values, subject to the constraints described in Clause 23.
Absolute Humidity
$\textit{Absolute Humidity}$ is an amount of water vapor, usually discussed per unit volume. Absolute humidity in air ranges from zero to roughly 30 grams per cubic meter when the air is saturated at $30 ^\circ C$. The absolute humidity changes as air temperature or pressure changes. $$$$ This is very inconvenient for chemical engineering calculations, e.g. for clothes dryers, where temperature can vary considerably. As a result, absolute humidity is generally defined in chemical engineering as mass of water vapor per unit mass of dry air, also known as the mass mixing ratio, which is much more rigorous for heat and mass balance calculations. $$$$ Mass of water per unit volume as in the equation above would then be defined as volumetric humidity, because of the potential confusion.
$AH = \frac{\mathcal{M}_\omega}{\vee_{net}}$, where $\mathcal{M}_\omega$ is the mass of water vapor per unit volume of total air and $\vee_{net}$ is water vapor mixture.
Amount of Substance per Volume
The amount of substance per volume is called the molar density. Molar density is an intensive property of a substance and depends on the temperature and pressure.
The amount of substance per unit volume is called the molar density. Molar density is an intensive property of a substance and depends on the temperature and pressure.
Angular Cross-section
"Angular Cross-section" is the cross-section for ejecting or scattering a particle into an elementary cone, divided by the solid angle $d\Omega$ of that cone.
Applicable units are those of quantitykind:AngularCrossSection
عدد موجى زاوى
Kreisrepetenz
angular wavenumber
número de onda angular
nombre d'onde angulaire
numero d'onda angolare
角波数
liczba falowa kątowa
"wavenumber" is the spatial frequency of a wave - the number of waves that exist over a specified distance. More formally, it is the reciprocal of the wavelength. It is also the magnitude of the wave vector.
$k = \frac{2\pi}{\lambda}= \frac{2\pi\upsilon}{\upsilon_p}=\frac{\omega}{\upsilon_p}$, where $\upsilon$ is the frequency of the wave, $\lambda$ is the wavelength, $\omega = 2\pi \upsilon$ is the angular frequency of the wave, and $\upsilon_p$ is the phase velocity of the wave. Alternatively: $k = \frac{p}{\hbar}$, where $p$ is the linear momentum of quasi free electrons in an electron gas and $\hbar$ is the reduced Planck constant ($h$ divided by $2\pi$); for phonons, its magnitude is $k = \frac{2\pi}{\lambda}$, where $\lambda$ is the wavelength of the lattice vibrations.
Applicable units are those of quantitykind:AngularWavenumber
تكرار زاوى
Kreiswellenzahl
angular repetency
répétence angulaire
repetencja kątowa
repetência angular
Area Ratio
Applicable units are those of quantitykind:AreaRatio
Atmospheric Hydroxylation Rate
A second order reaction rate constant that is a specific second order reaction rate constant that governs the kinetics of an atmospheric, gas-phase reaction between hydroxyl radicals and an organic chemical.
Applicable units are those of quantitykind:AtmosphericHydroxylationRate
Canonical Partition Function
A "Canonical Partition Function" applies to a canonical ensemble, in which the system is allowed to exchange heat with the environment at fixed temperature, volume, and number of particles.
$Z = \sum_r e^{-\frac{E_r}{kT}}$, where the sum is over all quantum states consistent with given energy, volume, external fields, and content, $E_r$ is the energy in the $rth$ quantum state, $k$ is the Boltzmann constant, and $T$ is thermodynamic temperature.
Energiekosten
energy cost
Applicable units are those of quantitykind:CostPerEnergy
Cross-section
"Cross-section" is used to express the likelihood of interaction between particles. For a specified target particle and for a specified reaction or process produced by incident charged or uncharged particles of specified type and energy, it is the mean number of such reactions or processes divided by the incident-particle fluence.
Applicable units are those of quantitykind:DigitRate
Duty Cycle
A duty cycle or power cycle is the fraction of one period in which a signal or system is active.
Applicable units are those of quantitykind:DutyCycle
elektrische Leitfähigkeit
electric conductivity
conductividad eléctrica
رسانايى الکتريکى/هدایت الکتریکی
conductivité électrique
conducibilità elettrica
Kekonduksian elektrik
condutividade elétrica
električna prevodnost
elektrik iletkenliği
电导率
The quantity kind $\textit{Electric Conductivity}$ or $\textit{Specific Conductance}$ is a measure of a material's ability to conduct an electric current. When an electrical potential difference is placed across a conductor, its movable charges flow, giving rise to an electric current. The conductivity $\sigma$ is defined as the ratio of the electric current density $J$ to the electric field, $E$: $J = \sigma E$. In isotropic materials, conductivity is scalar-valued, however in general, conductivity is a tensor-valued quantity.
Applicable units are those of quantitykind:ElectricConductivity
القدرة الفعالة
Wirkleistung
electric power
potencia activa
puissance active
potenza attiva
有効電力
moc czynna
potência activa
有功功率
"Electric Power" is the rate at which electrical energy is transferred by an electric circuit. In the simple case of direct current circuits, electric power can be calculated as the product of the potential difference in the circuit (V) and the amount of current flowing in the circuit (I): $P = VI$, where $P$ is the power, $V$ is the potential difference, and $I$ is the current. However, in general electric power is calculated by taking the integral of the vector cross-product of the electrical and magnetic fields over a specified area.
$p = ui$, where $u$ is instantaneous voltage and $i$ is instantaneous electric current.
Energy per temperature
إنتروبيا
entropie
Entropie
entropy
entropía
آنتروپی
एन्ट्रॉपी
entropia
エントロピー
Entropi
Энтропия
entropija
entropi
When a small amount of heat $dQ$ is received by a system whose thermodynamic temperature is $T$, the entropy of the system increases by $dQ/T$, provided that no irreversible change takes place in the system.
Applicable units are those of quantitykind:Entropy
Equilibrium Constant
$K^\Theta = \Pi_B(\lambda_B^\Theta)^{-\nu_B}$, where $\Pi_B$ denotes the product for all substances $B$, $\lambda_B^\Theta$ is the standard absolute activity of substance $B$, and $\nu_B$ is the stoichiometric number of the substance $B$.
Exchange Integral
"Exchange Integral" is the constituent of the interaction energy between the spins of adjacent electrons in matter arising from the overlap of electron state functions.
Applicable units are those of quantitykind:ExchangeIntegral
fluidity
fluidity of a material as complement of the dynamic viscosity
Fließvermögen eines Stoffes als Kehrwert der dynamischen Viskosität
Applicable units are those of quantitykind:Fluidity
Gauge Pressure
Gauge Pressure is the pressure of a system relative to the pressure of the surrounding atmosphere. It is the difference between the absolute pressure and the atmospheric pressure. Gauge pressure is positive for pressures above atmospheric pressure and negative for pressures below it. A Quantity in QUDT having a QuantityKind of GaugePressure would typically also assert the value of qudt:isDeltaQuantity to be true, indicating that the value is a difference between two pressures.
طاقة غيبس الحرة
Gibbsova volná energie
freie Enthalpie
Gibbs energy
Energía de Gibbs
انرژی آزاد گیبس
enthalpie libre
energia libera di Gibbs
ギブズエネルギー
Tenaga Gibbs
entalpia swobodna
energia livre de Gibbs
Entalpie liberă
энергия Гиббса
Prosta entalpija
Gibbs Serbest Enerjisi
吉布斯自由能
$\textit{Internal Energy}$ is one of the potentials are used to measure energy changes in systems as they evolve from an initial state to a final state. The potential used depends on the constraints of the system, such as constant temperature or pressure. $\textit{Internal Energy}$ is the internal energy of the system, $\textit{Enthalpy}$ is the internal energy of the system plus the energy related to pressure-volume work, and Helmholtz and Gibbs free energy are the energies available in a system to do useful work when the temperature and volume or the pressure and temperature are fixed, respectively. The name $\textit{Gibbs Free Energy}$ is also used.
$G = H - T \cdot S$, where $H$ is enthalpy, $T$ is thermodynamic temperature and $S$ is entropy.
Gibbs Energy is one of the potentials used to measure energy changes in systems as they evolve from an initial state to a final state. The potential used depends on the constraints of the system, such as constant temperature or pressure. $\textit{Internal Energy} is the internal energy of the system, Enthalpy is the internal energy of the system plus the energy related to pressure-volume work, and Helmholtz and Gibbs free energy are the energies available in a system to do useful work when the temperature and volume or the pressure and temperature are fixed, respectively. The name Gibbs Free Energy is also used.
Gibbs-Energie
Gibbs-Funktion
Gibbs function
fungsi Gibbs
Hamilton Function
The Hamilton–Jacobi equation (HJE) is a necessary condition describing extremal geometry in generalizations of problems from the calculus of variations.
$H = \sum p_i\dot{q_i} - L$, where $p_i$ is a generalized momentum, $\dot{q_i}$ is a generalized velocity, and $L$ is the Lagrange function.
Applicable units are those of quantitykind:HamiltonFunction
طاقة هلمهولتز الحرة
Helmholtzova volná energie
freie Energie
Helmholtz energy
Energía de Helmholtz
انرژی آزاد هلمولتز
énergie libre
energia libera di Helmholz
ヘルムホルツの自由エネルギー
Tenaga Helmholtz
energia swobodna
energia livre de Helmholtz
свободная энергия Гельмгольца
Prosta energija
Helmholtz enerjisi
亥姆霍兹自由能
$\textit{Helmholtz Energy}$ is one of the potentials are used to measure energy changes in systems as they evolve from an initial state to a final state. The potential used depends on the constraints of the system, such as constant temperature or pressure. $\textit{Internal Energy}$ is the internal energy of the system, $\textit{Enthalpy}$ is the internal energy of the system plus the energy related to pressure-volume work, and Helmholtz and Gibbs free energy are the energies available in a system to do useful work when the temperature and volume or the pressure and temperature are fixed, respectively. The name $\textit{Helmholz Free Energy}$ is also used.
$H = U - T \cdot S$, where $U$ is internal energy, $T$ is thermodynamic temperature and $S$ is entropy.
Helmholtz-Energie
Helmholtz-Funktion
Helmholtz function
fungsi Helmholtz
Helmholtz fonksiyonu
Instantaneous Power
For a two-terminal element or a two-terminal circuit with terminals A and B, $\textit{Instantaneous Power}$ is the product of the voltage $u_{AB}$ between the terminals and the electric current i in the element or circuit: $$p = u_{AB} \cdot i$$ Where $u_{AB}$ is the line integral of the electric field strength from A to B, and where the electric current in the element or circuit is taken positive if its direction is from A to B and negative in the opposite case. $$$$ For an n-terminal circuit, it is the sum of the instantaneous powers relative to the n - 1 pairs of terminals when one of the terminals is chosen as a common terminal for the pairs. $$$$ For a polyphase element, it is the sum of the instantaneous powers in all phase elements of a polyphase element. $$$$ For a polyphase line consisting of m line conductors and one neutral conductor, it is the sum of the m instantaneous powers expressed for each line conductor by the product of the polyphase line-to-neutral voltage and the corresponding line current.
Inverse Square Energy
Applicable units are those of quantitykind:InverseEnergy_Squared
Inverse Temperature
Applicable units are those of quantitykind:InverseTemperature
Inverse Time
الطاقة الهلامية
Intenzita záření
Bestrahlungsstärke
irradiance
irradiancia
پرتو افکنی/چگالی تابش
éclairement énergétique
irradianza
熱流束
Kepenyinaran
irradiância
Поверхностная плотность потока энергии
yoğunluk
辐照度
$E = \frac{d\Phi}{dA}$, where $d\Phi$ is the radiant flux incident on an element of the surface with area $dA$.
Applicable units are those of quantitykind:Irradiance
koyuluk
Isentropic Compressibility
$\textit{Isentropic compressibility}$ is the extent to which a material reduces its volume when it is subjected to compressive stresses at a constant value of entropy.
$\varkappa_S = \frac{1}{V}\left (\frac{\partial V}{\partial p} \right )_S$, where $V$ is volume, $p$ is $pressure$, and $S$ is entropy,
Isentropic compressibility is the extent to which a material reduces its volume when it is subjected to compressive stresses at a constant value of entropy.
Applicable units are those of quantitykind:IsentropicCompressibility
لزوجة
viskozita
kinematische Viskosität
kinematic viscosity
viscosidad cinemática
گرانروی جنبشی/ویسکوزیته جنبشی
viscosité cinématique
श्यानता
viscosità cinematica
粘度
Kelikatan kinematik
lepkość kinematyczna
viscosidade cinemática
Viscozitate cinematică
кинематическую вязкость
kinematična viskoznost
Kinematik akmazlık
运动粘度
The ratio of the viscosity of a liquid to its density. Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. In many situations, we are concerned with the ratio of the inertial force to the viscous force (that is the Reynolds number), the former characterized by the fluid density $\rho$. This ratio is characterized by the kinematic viscosity (Greek letter $\nu$), defined as follows: $\nu = \mu / \rho$. The SI unit of $\nu$ is $m^{2}/s$. The SI unit of $\nu$ is $kg/m^{1}$.
$\nu = \frac{\eta}{\rho}$, where $\eta$ is dynamic viscosity and $\rho$ is mass density.
Applicable units are those of quantitykind:KinematicViscosity
Lagrange Function
The Lagrange Function is a function that summarizes the dynamics of the system.
$L(q_i, \dot{q_i}) = T(q_i, \dot{q_i}) - V(q_i)$, where $T$ is kinetic energy, $V$ is potential energy, $q_i$ is a generalized coordinate, and $\dot{q_i}$ is a generalized velocity.
Applicable units are those of quantitykind:LagrangeFunction
Length Temperature
Applicable units are those of quantitykind:LengthTemperature
Level Width
The "Level Width" is the uncertainty in the energy of a quantum-mechanical system having discrete energy levels in a state that is not strictly stationary. The system may be an atom, a molecule, or an atomic nucleus.
$\Gamma = \frac{\hbar}{\tau}$, where $\hbar$ is the reduced Planck constant and $\tau$ is the mean lifetime.
Applicable units are those of quantitykind:LevelWidth
Linear Energy Transfer
"Linear Energy Transfer" (LET) is the linear density of energy lost by a charged ionizing particle travelling through matter.Typically, this measure is used to quantify the effects of ionizing radiation on biological specimens or electronic devices.
For ionizing charged particles, $L_\Delta = \frac{dE_\Delta}{dl}$, where $dE_\Delta$ is the mean energy lost in elctronic collisions locally to matter along a small path through the matter, minus the sum of the kinetic energies of all the electrons released with kinetic energies in excess of $\Delta$, and $dl$ is the length of that path.
Applicable units are those of quantitykind:LinearEnergyTransfer
Applicable units are those of quantitykind:LinearLogarithmicRatio
التدفق الضوئي
Светлинен поток
Světelný tok
Lichtstrom
luminous flux
flujo luminoso
شار نوری
flux lumineux
שטף הארה
प्रकाशीय बहाव
fényáram
flusso luminoso
光束
fluctús lucis
Fluks berluminositi
strumień świetlny
fluxo luminoso
flux luminos
Световой поток
svetlobni tok
işık akısı
光通量
$\textit{Luminous Flux}$, or $\textit{Luminous Power}$, is the measure of the perceived power of light. It differs from radiant flux, the measure of the total power of light emitted, in that luminous flux is adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light.
$\Phi_v = K_m \int_{0}^{\infty}{\Phi_\lambda(\lambda)}{V(\lambda)d\lambda}$, where $K_m$ is the maximum spectral luminous efficacy, $\Phi_\lambda(\lambda)$ is the spectral radiant flux, $V(\lambda)$ is the spectral luminous efficiency, and $\lambda$ is the wavelength.
Luminous Flux or Luminous Power is the measure of the perceived power of light. It differs from radiant flux, the measure of the total power of light emitted, in that luminous flux is adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light.
Applicable units are those of quantitykind:LuminousFlux
Magnetic flux per length
"Magnetic Flux per Length" is a quantity in the SI and C.G.S. Systems of Quantities.
Applicable units are those of quantitykind:MagneticFluxPerLength
Mass Temperature
Applicable units are those of quantitykind:MassTemperature
قابلية التحرك
Beweglichkeit
mobility
movilidad
mobilité
mobilità
移動度
mobilność
mobilidade
迁移率
"Mobility" characterizes how quickly a particle can move through a metal or semiconductor, when pulled by an electric field. The average drift speed imparted to a charged particle in a medium by an electric field, divided by the electric field strength.
Mobilität
Modulus of Rotational Subgrade Reaction
Modulus of Rotational Subgrade Reaction is a measure for modulus of rotational subgrade reaction, which expresses the rotational elastic bedding of a linear structural element per length, such as for a beam. It is typically measured in Nm/(m*rad).
Applicable units are those of quantitykind:ModulusOfRotationalSubgradeReaction
Molar Attenuation Coefficient
"Molar Attenuation Coefficient" is a measurement of how strongly a chemical species or substance absorbs or scatters light at a given wavelength, per amount of substance.
$\mu_c = -\frac{\mu}{c}$, where $\mu$ is the linear attenuation coefficient and $c$ is the amount-of-substance concentration.
Applicable units are those of quantitykind:MolarAttenuationCoefficient
Molar Heat Capacity
"Molar Heat Capacity" is the amount of heat energy required to raise the temperature of 1 mole of a substance. In SI units, molar heat capacity (symbol: cn) is the amount of heat in joules required to raise 1 mole of a substance 1 Kelvin.
$C_m = \frac{C}{n}$, where $C$ is heat capacity and $n$ is amount of substance.
Applicable units are those of quantitykind:MolarHeatCapacity
كتلة مولية
Molární hmotnost
Molmasse
molar mass
masa molar
جرم مولی
masse molaire
मोलर द्रव्यमान
massa molare
モル質量
Jisim molar
Masa molowa
massa molar
Masă molară
Молярная масса
molska masa
molar kütle
摩尔质量
In chemistry, the molar mass M is defined as the mass of a given substance (chemical element or chemical compound) divided by its amount of substance. It is a physical property of a given substance. The base SI unit for molar mass is $kg/mol$.
Applicable units are those of quantitykind:MolarMass
molare Masse
stoffmengenbezogene Masse
Multiplication Factor
The "Multiplication Factor" is the ratio of the total number of fission or fission-dependent neutrons produced in a time interval to the total number of neutrons lost by absorption and leakage during the same interval.
Nuclear Quadrupole Moment
"Nuclear Quadrupole Moment" is a quantity that characterizes the deviation from spherical symmetry of the electrical charge distribution in an atomic nucleus.
$Q = (\frac{1}{e}) \int (3z^2 - r^2)\rho(x, y, z)dV$, in the quantum state with the nuclear spin in the field direction $(z)$, where $\rho(x, y, z)$ is the nuclear electric charge density, $e$ is the elementary charge, $r^2 = x^2 + y^2 + z^2$, and $dV$ is the volume element $dx$ $dy$ $dz$.
Applicable units are those of quantitykind:NuclearQuadrupoleMoment
Opening Ratio
In the context of mechanical systems, "opening ratio" might refer to the proportion of time or the extent to which a valve or gate is open relative to its maximum capacity.
Applicable units are those of quantitykind:OpeningRatio
Product of Inertia
The quantity kind $\textit{Product of Inertia}$ is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
معامل القدرة
Účiník
Leistungsfaktor
power factor
factor de potencia
ضریب توان
facteur de puissance
शक्ति गुणांक
fattore di potenza
力率
faktor kuasa
Współczynnik mocy
fator de potência
factor de putere
Коэффициент_мощности
güç faktörü
功率因数
"Power Factor", under periodic conditions, is the ratio of the absolute value of the active power $P$ to the apparent power $S$.
$\lambda = \left | P \right | / \left | S \right |$, where $P$ is active power and $S$ is apparent power.
Applicable units are those of quantitykind:PowerFactor
Power Per Electric Charge
"Power Per Electric Charge" is the amount of energy generated by a unit of electric charge.
Applicable units are those of quantitykind:PowerPerElectricCharge
pressure in relation to volume flow rate
Applicable units are those of quantitykind:PressureInRelationToVolumeFlowRate
Radiance
"Radiance" is a radiometric measure that describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle in a specified direction.
$L = \frac{dI}{dA}\frac{1}{cos\alpha}$, where $dI$ is the radiant intensity emitted from an element of the surface area $dA$, and angle $\alpha$ is the angle between the normal to the surface and the given direction.
Applicable units are those of quantitykind:Radiance
Relative Partial Pressure
$\varphi = p / p_{sat}$, where $p$ is partial pressure of vapour, $p_{sat}$ is thermodynamic temperature and $V$ is its partial pressure at saturation (at the same temperature). Relative partial pressure is often referred to as $RH$ and expressed in percent. $\textit{Relative Partial Pressure}$ is also referred to as $\textit{Relative Humidity}$.
Applicable units are those of quantitykind:RelativePartialPressure
Relative Pressure Coefficient
$\alpha_p = \frac{1}{p}\left (\frac{\partial p}{\partial T} \right )_V$, where $p$ is $pressure$, $T$ is thermodynamic temperature and $V$ is volume.
Applicable units are those of quantitykind:RelativePressureCoefficient
repetency
quantity whose value is inversely proportional to the length value
Größe, deren Wert sich umgekehrt proportional zum Längenwert verhält
Applicable units are those of quantitykind:Repetency
Residual Resistivity
"Residual Resistivity" for metals, is the resistivity extrapolated to zero thermodynamic temperature.
Applicable units are those of quantitykind:ResidualResistivity
Section Modulus
The Section Modulus is a geometric property for a given cross-section used in the design of beams or flexural members.
$Z = \frac{I_a}{(r_Q)_{max}}$, where $I_a$ is the second axial moment of area and $(r_Q)_{max}$ is the maximum radial distance of any point in the surface considered from the $Q-axis$ with respect to which $I_a$ is defined.
Applicable units are those of quantitykind:SectionModulus
Service Factor
The value indicates the multiplier of the rated power that equipment can handle for some period of time when operating according to a manufacturer's specified conditions; typically applicable to motors.
Applicable units are those of quantitykind:ServiceFactor
الزاوية الصلبة
Пространствен ъгъл
Prostorový úhel
Raumwinkel
Στερεά γωνία
solid angle
ángulo sólido
زاویه فضایی
angle solide
זווית מרחבית
térszög
angolo solido
立体角
angulus solidus
Sudut padu
kąt bryłowy
ângulo sólido
unghi solid
Телесный угол
prostorski kot
katı cisimdeki açı
立体角度
The solid angle subtended by a surface S is defined as the surface area of a unit sphere covered by the surface S's projection onto the sphere. A solid angle is related to the surface of a sphere in the same way an ordinary angle is related to the circumference of a circle. Since the total surface area of the unit sphere is 4*pi, the measure of solid angle will always be between 0 and 4*pi.
Applicable units are those of quantitykind:SolidAngle
Specific Modulus
Specific modulus is a materials property consisting of the elastic modulus per mass density of a material. It is also known as the stiffness to weight ratio or specific stiffness. High specific modulus materials find wide application in aerospace applications where minimum structural weight is required. The dimensional analysis yields units of distance squared per time squared.
$specific modulus = E/\rho$, where $E$ is elastic modulus and $\rho$ is density.
Applicable units are those of quantitykind:SpecificModulus
Specific Stiffness
Stiffness to Weight Ratio
Specific Surface Area
Specific surface area (SSA) is a property of solids defined as the total surface area (SA) of a material per unit mass, (with units of m2/kg or m2/g). It is a physical value that can be used to determine the type and properties of a material (e.g. soil or snow). It has a particular importance for adsorption, heterogeneous catalysis, and reactions on surfaces.
$SSA = \frac{SA}{\m}$, where $SA$ is the surface area of an object and $\m$ is the mass density of the object.
Specific surface area (SSA) is a property of solids defined as the total surface area (SA) of a material per unit mass, (with units of m²/kg or m²/g). It is a physical value that can be used to determine the type and properties of a material (e.g. soil or snow). It has a particular importance for adsorption, heterogeneous catalysis, and reactions on surfaces.
Applicable units are those of quantitykind:SpecificSurfaceArea
Strain
In any branch of science dealing with materials and their behaviour, strain is the geometrical expression of deformation caused by the action of stress on a physical body. Strain is calculated by first assuming a change between two body states: the beginning state and the final state. Then the difference in placement of two points in this body in those two states expresses the numerical value of strain. Strain therefore expresses itself as a change in size and/or shape. [Wikipedia]
Thruster Power To Thrust Efficiency
Applicable units are those of quantitykind:ThrusterPowerToThrustEfficiency
Time Squared
Applicable units are those of quantitykind:Time_Squared
Total Mass Stopping Power
If a substance is compared in gaseous and solid form, then the linear stopping powers of the two states are very different just because of the different density. One therefore often divides S(E) by the density of the material to obtain the "Mass Stopping Power". The mass stopping power then depends only very little on the density of the material.
$S_m = \frac{S}{\rho}$, where $S$ is the total linear stopping power and $\rho$ is the mass density of the sample.
Applicable units are those of quantitykind:TotalMassStoppingPower
Vehicle Velocity
Ampere Hour
$\textit{Ampere Hour}$ is a practical unit of electric charge equal to the charge flowing in one hour through a conductor passing one ampere. An ampere-hour or amp-hour (symbol $Ah,\,AHr,\, A \cdot h, A h$) is a unit of electric charge, with sub-units milliampere-hour ($mAh$) and milliampere second ($mAs$). One ampere-hour is equal to 3600 coulombs (ampere-seconds), the electric charge transferred by a steady current of one ampere for one hour. The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and electrical batteries. The commonly seen milliampere-hour ($mAh$ or $mA \cdot h$) is one-thousandth of an ampere-hour ($3.6 \,coulombs$).
Ampere Turn
The $\textit{ampere-turn}$ was the MKS unit of magnetomotive force (MMF), represented by a direct current of one ampere flowing in a single-turn loop in a vacuum. "Turns" refers to the winding number of an electrical conductor comprising an inductor. The ampere-turn was replaced by the SI unit, $ampere$.
Statampere
The unit $\textit{Statampere}$, symbol $statA$ is a unit in the category of Electric current. It is also known as statamperes. This unit is commonly used in the cgs unit system. $\textit{Statampere (statA)}$ has a dimension of $I$ where $I$ is electric current. It can be converted to the corresponding standard SI unit $A$ by multiplying its value by a factor of 3.355641E-010.
AttoCoulomb
An $\textit{AttoColomb}$ is $10^{-18} C$, where $C$ is the unit for $Colomb$.
unit for the symbol rate in communications engineering and telecommunication, at which 1 baud corresponds to the speed, at which 1 symbol (defined measurable signal change in the physical exchange medium) will be exchanged per second
Barrel (UK Petroleum) per Day
unit of the volume barrel (UK petroleum) for crude oil according to the Imperial system of units divided by the unit day
Barrel (UK Petroleum) per Hour
unit of the volume barrel (UK petroleum) for crude oil according to the Imperial system of units divided by the unit hour
Barrel (UK Petroleum) per Minute
unit of the volume barrel (UK petroleum) for crude oil according to the Imperial system of units divided by the unit minute
Barrel (UK Petroleum) per Second
unit of the volume barrel (UK petroleum) for crude oil according to the Imperial system of units divided by the SI base unit second
Barrel (US) per Day
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units divided by the unit day
Barrel (US) per Minute
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units divided by the unit minute
Barrel (US Petroleum)
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units
Barrel (US Petroleum) per Hour
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units divided by the unit hour
Barrel (US Petroleum) per Second
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units divided by the SI base unit second
Biot
"Biot" is another name for the abampere (aA), which is the basic electromagnetic unit of electric current in the emu-cgs (centimeter-gram-second) system of units. It is called after a French physicist, astronomer, and mathematician Jean-Baptiste Biot. One abampere is equal to ten amperes in the SI system of units. One abampere is the current, which produces a force of 2 dyne/cm between two infinitively long parallel wires that are 1 cm apart.
Becquerel per Kilogram
The only unit in the category of Specific radioactivity. It is also known as becquerels per kilogram, becquerel/kilogram. This unit is commonly used in the SI unit system. Becquerel Per Kilogram (Bq/kg) has a dimension of $M{-1}T{-1}$ where $M$ is mass, and $T$ is time. It essentially the same as the corresponding standard SI unit $/kg/s$.
"Becquerel per Kilogram" is used to describe radioactivity, which is often expressed in becquerels per unit of volume or weight, to express how much radioactive material is contained in a sample.
Becquerel per Cubic Metre
Becquerel per Cubic Meter
Becquerel Per Cubic Meter ($Bq/m3$) is a unit in the category of Radioactivity concentration. It is also known as becquerels per cubic meter, becquerel per cubic metre, becquerels per cubic metre, becquerel/cubic inch. This unit is commonly used in the SI unit system. Becquerel Per Cubic Meter (Bq/m3) has a dimension of $L{-3}T{-1}$ where $L$ is length, and $T$ is time. It essentially the same as the corresponding standard SI unit $/s\cdot m{3}$.
The SI derived unit of unit in the category of Radioactivity concentration.
BTU per Square Foot
$\textit{BTU per Square Foot}$ is an Imperial unit for 'Energy Per Area' expressed as $Btu/ft^2$.
BTU per Square Foot Hour Degree Fahrenheit
$\textit{BTU per Square Foot Hour Degree Fahrenheit}$ is an Imperial unit for 'Coefficient Of Heat Transfer' expressed as $Btu/(h-ft^{2}-degF)$.
BTU per Square Foot Second Degree Fahrenheit
$\textit{BTU per Square Foot Second Degree Fahrenheit}$ is an Imperial unit for 'Coefficient Of Heat Transfer' expressed as $Btu/(ft^{2}-s-degF)$.
British Thermal Unit (IT) per Cubic Foot
$\textit{British Thermal Unit (IT) Per Cubic Foot}$ ($Btu (IT)/ft^3$) is a unit in the category of Energy density. It is also known as Btu per cubic foot, Btu/cubic foot. This unit is commonly used in the UK, US unit systems. It has a dimension of $ML^{-1}T^{-2}$ where $M$ is mass, $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit $J/m^3$ by multiplying its value by a factor of 37258.94579.
British thermal unit (international table) per hour square foot degree Fahrenheit
unit of the heat transition coefficient according to the Imperial system of units
British Thermal Unit (international Table) per Hour Square Foot degree Rankine
unit of the heat transfer coefficient according to the Imperial system of units
British thermal unit (international table) per second square foot degree Fahrenheit
British Thermal Unit (international Table) per Second Square Foot degree Rankine
British thermal unit (thermochemical) per square foot
unit of the areal-related energy transmisson according to the Imperial system of units
British Thermal Unit (TH) per Cubic Foot
British Thermal Unit (TH) Per Cubic Foot ($Btu (TH)/ft^3$) is a unit in the category of Energy density. It is also known as Btu per cubic foot, Btu/cubic foot. This unit is commonly used in the UK, US unit systems. It has a dimension of $ML^{-1}T^{-2}$ where $M$ is mass, $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit $J/m^3$ by multiplying its value by a factor of 37234.03.
British thermal unit (thermochemical) per hour square foot degree Fahrenheit
British thermal unit (thermochemical) per second square foot degree Fahrenheit
Bushel (UK) per Day
unit of the volume bushel (UK) (for fluids and for dry measures) according to the Imperial system of units divided by the unit for time day
Bushel (UK) per Hour
unit of the volume bushel (UK) (for fluids and for dry measures) according to the Imperial system of units divided by the unit for time hour
Bushel (UK) per Minute
unit of the volume bushel (UK) (for fluids and for dry measures) according to the Imperial system of units divided by the unit for time minute
Bushel (UK) per Second
unit of the volume bushel (UK) (for fluids and for dry measures) according to the Imperial system of units divided by the SI base unit second
bushel (US)
A bushel is an imperial and U.S. customary unit of dry volume, equivalent in each of these systems to 4 pecks or 8 gallons. It is used for volumes of dry commodities (not liquids), most often in agriculture. It is abbreviated as bsh. or bu. In modern usage, the dry volume is usually only nominal, with bushels referring to standard weights instead.
Bushel (US Dry) per Day
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units divided by the unit for time day
Bushel (US Dry) per Hour
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units divided by the unit for time hour
Bushel (US Dry) per Minute
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units divided by the unit for time minute
Bushel (US Dry) per Second
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units divided by the SI base unit second
Calorie (international Table) per Second Square Centimetre kelvin
Calorie (international Table) per Second Square Centimeter kelvin
calorie (thermochemical) per square centimetre
Calorie (thermochemical) per Second Square Centimetre kelvin
Calorie (thermochemical) per Second Square Centimeter kelvin
1,000-fold of the unit curie divided by the SI base unit kilogram
Cycles per Second
The "cycle per second" is a once-common English name for the unit of frequency now known as the hertz (Hz).
CentiCoulomb
Square centimetres per second
0.0001-fold of the power of the SI base unit metre by exponent 2 divided by the SI base unit second
Cubic Centimetre per Day
Cubic Centimeter per Day
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit day
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit day
Cubic Centimetre per Hour
Cubic Centimeter per Hour
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit hour
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit hour
Cubic Centimetre per Minute
Cubic Centimeter per Minute
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit minute
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit minute
Cubic Centimetre per Second
Cubic Centimeter per Second
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
Zentimeter hoch 4
quartic Centimetre
0.01-fold of SI base unit metre to the power four
0.01-fold of the SI base unit metre with the exponent 4
Centimole per kilogram
1/100 of SI unit of amount of substance per kilogram
Centinewton Metre
Centinewton Meter
0.01-fold of the product of the SI derived unit newton and SI base unit metre
Degrees per metre
A change of angle in one SI unit of length.
Dyne Centimetre
Dyne Centimeter
"Dyne Centimeter" is a C.G.S System unit for 'Torque' expressed as $dyn-cm$.
Dyne per Centimetre
Dyne per Centimeter
DecaCoulomb
DeciCoulomb
Decilitre per Gram
0.1-fold of the unit of the volume litre divided by the 0.001-fold of the SI base unit kilogram
Cubic Decimetre per Day
Cubic Decimeter per Day
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit for time day
Cubic Decimetre per Hour
Cubic Decimeter per Hour
0.001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit hour
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit hour
Cubic Decimetre per Minute
Cubic Decimeter per Minute
0.001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit for time minute
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit for time minute
Cubic Decimetre per Second
Cubic Decimeter per Second
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit for time second
Decinewton Metre
Decinewton Meter
0.1-fold of the product of the derived SI unit joule and the SI base unit metre
DeciSiemens
Erg per Cubic Centimetre
Erg per Cubic Centimeter
ExaCoulomb
Faraday
"Faraday" is a unit for 'Electric Charge' expressed as $F$.
Foot Pound per Square Foot
"Foot Pound per Square Foot" is an Imperial unit for 'Energy Per Area' expressed as $ft-lbf/ft^{2}$.
Foot Pound Force per Square Metre
Foot Pound Force per Square Meter
"Foot Pound Force per Square Meter" is a unit for 'Energy Per Area' expressed as $ft-lbf/m^{2}$.
Square Foot per Hour
$\textit{Square Foot per Hour}$ is an Imperial unit for $\textit{Kinematic Viscosity}$ and $\textit{Thermal Diffusivity}$ expressed as $ft^{2}/hr$.
Square Foot per Second
"Square Foot per Second" is an Imperial unit for 'Kinematic Viscosity' expressed as $ft^{2}/s$.
Cubic Foot per Day
power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for time day
Cubic Foot per Hour
power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit hour
Cubic Foot per Minute
"Cubic Foot per Minute" is an Imperial unit for 'Volume Per Unit Time' expressed as $ft^3/min$.
Cubic Foot per Second
"Cubic Foot per Second" is an Imperial unit for $ \textit{Volume Per Unit Time}$ expressed as $ft^3/s$.
power of the unit foot according to the Anglo-American and Imperial system of units by exponent 4
FemtoCoulomb
Imperial Gallon
A British gallon used in liquid and dry measurement approximately 1.2 U.S. gallons, or 4.54 liters
Gallon (UK) per Day
unit gallon (UK dry or liq.) according to the Imperial system of units divided by the SI unit day
Gallon (UK) per Hour
unit gallon (UK dry or Liq.) according to the Imperial system of units divided by the SI unit hour
Gallon (UK) per Minute
unit gallon (UK dry or liq.) according to the Imperial system of units divided by the SI unit minute
Gallon (UK) per Second
unit gallon (UK dry or liq.) according to the Imperial system of units divided by the SI base unit second
US Gallon per Day
"US Gallon per Day" is a unit for 'Volume Per Unit Time' expressed as $gal/d$.
Gallon (US) per Hour
unit gallon (US, liq.) according to the Anglo-American system of units divided by the SI unit hour
US Gallon per Minute
"US Gallon per Minute" is a C.G.S System unit for 'Volume Per Unit Time' expressed as $gal/min$.
Gallon (US Liquid) per Second
unit gallon (US, liq.) according to the Anglo-American system of units divided by the SI base unit second
Gill (UK) per Day
unit of the volume gill (UK) for fluids according to the Imperial system of units divided by the unit for time day
Gill (UK) per Hour
unit of the volume gill (UK) for fluids according to the Imperial system of units divided by the unit for time hour
Gill (UK) per Minute
unit of the volume gill (UK) for fluids according to the Imperial system of units divided by the unit for time minute
Gill (UK) per Second
unit of the volume gill (UK) for fluids according to the Imperial system of units divided by the SI base unit second
Gill (US) per Day
unit of the volume gill (US) for fluids according to the Anglo-American system of units divided by the unit for time day
Gill (US) per Hour
unit of the volume gill (US) for fluids according to the Anglo-American system of units divided by the unit for time hour
Gill (US) per Minute
unit of the volume gill (US) for fluids according to the Anglo-American system of units divided by the unit for time minute
Gill (US) per Second
unit of the volume gill (US) for fluids according to the Anglo-American system of units divided by the SI base unit second
Gram per Square Centimetre
Gram per Square Centimeter
0,001-fold of the SI base unit kilogram divided by the 0.0001-fold of the power of the SI base unit metre and exponent 2
Gram per Hectare
Gram Per Hectare is a unit of mass per area. Gram Per Hectare (mg/ha) has a dimension of ML-3 where M is mass, and L is length. It can be converted to the corresponding standard SI unit kg/m2 by multiplying its value by a factor of 0.0000001.
Gram per Square Metre
Gram per Square Meter
0,001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 2
Gram per Millimetre
Gram per Millimeter
0,001-fold of the SI base unit kilogram divided by the 0.001-fold the SI base unit meter
GigaByte
The gigabyte is a multiple of the unit byte for digital information storage. The prefix giga means $10^9$ in the International System of Units (SI), therefore 1 gigabyte is $1,000,000,000 \; bytes$. The unit symbol for the gigabyte is $GB$ or $Gbyte$, but not $Gb$ (lower case b) which is typically used for the gigabit. Historically, the term has also been used in some fields of computer science and information technology to denote the $gibibyte$, or $1073741824 \; bytes$.
Gigaohm
1,000,000,000-fold of the SI derived unit ohm
1 000 000 000-fold of the SI derived unit ohm
Hartley
Abhenry
Abhenry is the centimeter-gram-second electromagnetic unit of inductance, equal to one billionth of a henry.
Stathenry
The $\text{Stathenry (statH)}$ is a unit in the category of Electric inductance. It is also known as $tathenries$. This unit is commonly used in the cgs unit system. $Stathenry$ has a dimension of $ML^2T^{-2}I^{-2}$ where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. It can be converted to the corresponding standard SI unit H by multiplying its value by a factor of $8.987552 \times 10^{11}$.
HectoCoulomb
"HectoCoulomb" is a unit for 'Electric Charge' expressed as $hC$.
Unit of work (force multiplied by path) according to the Imperial system of units as a product unit inch multiplied by poundal. Product of the non SI-conform unit of the force poundal and the unit inch according to the Anglo-American and Imperial system of units.
Square Inch per Second
power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2 divided by the SI base unit second
Cubic Inch per Hour
power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit hour
Cubic Inch per Minute
"Cubic Inch per Minute" is an Imperial unit for 'Volume Per Unit Time' expressed as $in^{3}/min$.
Cubic Inch per Second
power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the SI base unit second
Quartic Inch
power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 4
Kiloampere Hour
product of the 1 000-fold of the SI base unit ampere and the unit hour
1,000-fold of the SI derived unit becquerel divided by the SI base unit kilogram
kBTU per Square Foot
$\textit{kBTU per Square Foot}$ is an Imperial unit for 'Energy Per Area' expressed as $kBtu/ft^2$.
kBTU per Square Foot is an Imperial unit for 'Energy Per Area.
Kilo Byte
The kilobyte is a multiple of the unit byte for digital information equivalent to 1000 bytes. Although the prefix kilo- means 1000, the term kilobyte and symbol kB have historically been used to refer to either 1024 (210) bytes or 1000 (103) bytes, dependent upon context, in the fields of computer science and information technology. This ambiguity is removed in QUDT, with KibiBYTE used to refer to 1024 bytes.
Kilocalorie per Square Centimetre
Kilocalorie per Square Centimeter
"Kilocalorie per Square Centimeter" is a unit for 'Energy Per Area' expressed as $kcal/cm^{2}$.
Kilogramm mal Meter je Sekunde
kilogram metre per second
Kilogram Meter per Second
کیلوگرم متر بر ثانیه
chilogrammo per metro al secondo
kilogram meter per saat
kilogram meter na sekundo
千克米每秒
"Kilogram Meter Per Second" is a unit for 'Linear Momentum' expressed as $kg-m/s$.
Kilogram per Square Centimetre
Kilogram per Square Centimeter
SI base unit kilogram divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Kilogram per Square Foot
SI base unit kilogram divided by the square of the imperial foot
Kilogram per Hectare
Kilogram Per Hectare is a unit of mass per area. Kilogram Per Hectare (kg/ha) has a dimension of ML-2 where $M$ is mass, and $L$ is length. It can be converted to the corresponding standard SI unit kg/m2 by multiplying its value by a factor of 0.0001.
Kilograms per metre second
unit of the dynamic viscosity as a quotient SI base unit kilogram divided by the SI base unit metre and by the SI base unit second
Kilogram per Second Square Metre
Kilogram per Second Square Meter
SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 2 and the SI base unit second
Kilogram per Square Second
kilogram na krychlovýsekunda kelvin
Kilogramm je Kubiksekunde Kelvin
kilogram per cubic second kelvin
kilogramo porsegundo cúbico kelvin
kilogramme par seconde cube-kelvin
chilogrammo al secondo cubo per kelvin
kilogram per saat kubik kelvin
kilogram na sekunda sześciennyokelwin
quilograma por segundo cúbico kelvin
kilogram pe secundă cub-kelvin
килограмм на кубический секунда-кельвин
kilogram na kubični sekunda kelvin
kilogram per saniyeküp kelvin
Unit commonly used for the coefficient of heat transfer
Kilogram_force Metre
Kilogram_force Meter
product of the unit kilogram-force and the SI base unit metre
Kilogram Force Metre per Square Centimetre
Kilogram Force Meter per Square Centimeter
product of the unit kilogram-force and the SI base unit metre divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Specification of the maximum of the energy absorption capability related to voltage rated value in kJ/kV, which could be emplaced in an arrester or parts of an arrester during a recovery test, without causing a thermal run away
Kilolitre per Hour
unit of the volume kilolitres divided by the unit hour
Pound Force per Foot
Kilomole per Kilogram
Kilomole Per Kilogram ($kmol/kg$) is a unit of Molality
Kilonewton Metre
Kilonewton Meter
1 000-fold of the product of the SI derived unit newton and the SI base unit metre
1,000-fold of the SI derived unit newton divided by the SI base unit metre
Kilosiemens
1 000-fold of the SI derived unit siemens
Kilowatt hour per square metre
A unit of energy per unit area, equivalent to 3 600 000 joules per square metre.
KiloWeber
Litre per Day
Liter per Day
Litre per Hour
Liter per Hour
Litre per Minute
Liter per Minute
Litre per Second
Liter per Second
unit litre divided by the SI base unit second
pound per acre
mass per area as pounds of mass (based on the international standard definition of the pound of mass as exactly 0.45359237 kg) divided by area as acres (a unit of area in a number of different systems, including the imperial and U.S. customary systems. The most commonly used acres today are the international acre and, in the United States, the survey acre. The most common use of the acre is to measure tracts of land. One international acre is equal to 4046.8564224 square metres.
Pound Mass (avoirdupois) per Square Foot
unit for areal-related mass as a unit pound according to the avoirdupois system of units divided by the power of the unit foot according to the Anglo-American and Imperial system of units by exponent 2
Pound Force Foot
"Pound Force Foot" is an Imperial unit for 'Torque' expressed as $lbf-ft$.
Pound Force Inch
"Pound Force Inch" is an Imperial unit for 'Torque' expressed as $lbf-in$.
"Pound Force per Foot" is an Imperial unit for 'Force Per Length' expressed as $lbf/ft$.
unit of force per unit length based on the Anglo-American system of units
Square metres Hertz
Square metres per gram
Square metres per square second
Square Meters per Square Second
Cubic Metre per Day
Cubic Meter per Day
power of the SI base unit metre with the exponent 3 divided by the unit day
Cubic Metre per Hour
Cubic Meter per Hour
Cubic Meter Per Hour (m3/h) is a unit in the category of Volume flow rate. It is also known as cubic meters per hour, cubic metre per hour, cubic metres per hour, cubic meter/hour, cubic metre/hour, cubic meter/h, cubic metre/h, flowrate. Cubic Meter Per Hour (m3/h) has a dimension of L3T-1 where $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit m3/s by multiplying its value by a factor of 0.00027777777.
Cubic Metre per Minute
Cubic Meter per Minute
power of the SI base unit metre with the exponent 3 divided by the unit minute
Cubic Metre per Year
Kubieke meter per Jaar
power of the SI base unit metre with the exponent 3 divided by the unit year
cubic meter divided by the unit year with 365 days
Quartic Metre
Quartic Meter
A unit associated with area moments of inertia.
Mole per Kilogram
Mole Per Kilogram ($mol/kg$) is a unit of Molality
non SI-conform unit of the material molar flux divided by the avoirdupois pound for mass according to the avoirdupois unit system
Megaampere
1 000 000-fold of the SI base unit ampere
1,000,000-fold of the SI base unit ampere
1,000,000-fold of the SI derived unit becquerel divided by the SI base unit kilogram
Mega byte
The megabyte is defined here as one million Bytes. Also, see unit:MebiBYTE.
Million US Dollars
Megagram per Hectare per Year
Annual flux equivalent to 1000kg per hectare (10000 square meters) or one tonne per hectare per year, typically used to express a crop yield.
Megajoule per Cubic Metre
Megajoule per Cubic Meter
1,000,000-fold of the SI derived unit joule divided by the power of the SI base unit metre with the exponent 3
Meganewton Metre
Meganewton Meter
1,000,000-fold of the product of the SI derived unit newton and the SI base unit metre
MegaSiemens
microampere
Microbecquerel
0.000001-fold of the SI derived unit becquerel
microfarad
The "microfarad" (symbolized $\mu F$) is a unit of capacitance, equivalent to 0.000001 (10 to the -6th power) farad. The microfarad is a moderate unit of capacitance. In utility alternating-current (AC) and audio-frequency (AF) circuits, capacitors with values on the order of $1 \mu F$ or more are common. At radio frequencies (RF), a smaller unit, the picofarad (pF), is often used.
Microgram per square centimetre
A unit of mass per area, equivalent to 0.01 grammes per square metre
Micromoles per gram
Micromole Per Gram ($umol/g$) is a unit of Molality
0.000001-fold of the SI base unit mol divided by the 0.001-fold of the SI base unit kilogram
Micronewton Metre
Micronewton Meter
0.000001-fold of the product out of the derived SI newton and the SI base unit metre
Milliampere Hour
product of the 0.001-fold of the SI base unit ampere and the unit hour
product of the 0.001-fold of the SI base unit ampere and the SI base unit second
Milligram per Square Centimetre
Milligram per Square Centimeter
0.000001-fold of the SI base unit kilogram divided by the 0.0001-fold of the power of the SI base unit metre with the exponent 2
Milligram per Square Decimetre
Milligram per Square Decimeter
0.000001-fold of the SI base unit kilogram divided by the 0.01-fold of the power of the SI base unit metre with the exponent 2
Milligram per Hectare
0.000001-fold of the SI base unit kilogram divided by the 10,000-fold of the power of the SI base unit metre with the exponent 2
Milligram per Square Metre
Milligram per Square Meter
0.000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 2
Millilitre per Day
0.001-fold of the unit litre divided by the unit day
Millilitre per Hour
0.001-fold of the unit litre divided by the unit hour
Millilitre per Kilogram
0.001-fold of the unit of the volume litre divided by the SI base unit kilogram
Millilitre per Minute
0.001-fold of the unit litre divided by the unit minute
Millilitre per Second
0.001-fold of the unit litre divided by the SI base unit second
Square Millimetre per Second
Square Millimeter per Second
0.000001-fold of the power of the SI base unit metre with the exponent 2 divided by the SI base unit second
Quartic Millimetre
Quartic Millimeter
0.001-fold of the power of the SI base unit metre with the exponent 4
Millinewton Metre
Millinewton Meter
0.001-fold of the product of the SI derived unit newton and the SI base unit metre
Millinewton per Metre
Millinewton per Meter
0.001-fold of the SI derived unit newton divided by the SI base unit metre
Newton Centimetre
Newton Centimeter
product of the SI derived unit newton and the 0.01-fold of the SI base unit metre
product of the SI derived unit newton and the SI base unit metre divided by the unit degree
Newtonmeter pro Radian
Newton metre per radian
Newton meter per radian
Newton Meter per Radian is the SI unit for Torsion Constant
Newton per Centimetre
Newton per Centimeter
SI derived unit newton divided by the 0.01-fold of the SI base unit metre
newtonů na metr
Newton je Meter
newton per metre
Newton per Meter
newton por metro
نیوتن بر متر
newton par mètre
प्रति मीटर न्यूटन
newton al metro
ニュートン毎メートル
newton per meter
niuton na metr
newton pe metru
ньютон на метр
newton na meter
newton bölü metre
牛顿每米
Newton Per Meter (N/m) is a unit in the category of Surface tension. It is also known as newtons per meter, newton per metre, newtons per metre, newton/meter, newton/metre. This unit is commonly used in the SI unit system. Newton Per Meter (N/m) has a dimension of MT-2 where $M$ is mass, and $T$ is time. This unit is the standard SI unit in this category.
Newton per Millimetre
Newton per Millimeter
SI derived unit newton divided by the 0.001-fold of the SI base unit metre
Nat
A nat is a logarithmic unit of information or entropy, based on natural logarithms and powers of e, rather than the powers of 2 and base 2 logarithms which define the bit. The nat is the natural unit for information entropy. Physical systems of natural units which normalize Boltzmann's constant to 1 are effectively measuring thermodynamic entropy in nats.
Number per metre
Number per Minute
nanoampere
NanoCoulomb
Nanogram per Square Centimetre
Nanogram per Square Centimeter
0,000,000,000,001-fold of the SI base unit kilogram divided by the 0.0001-fold of the power of the SI base unit metre and exponent 2
Nanomoles per gram
Nanomole Per Gram (\(nanomol/g\)) is a unit of Molality
0.000000001-fold of the SI base unit mol divided by the 0.001-fold of the SI base unit kilogram
Oersted
Oersted (abbreviated as Oe) is the unit of magnetizing field (also known as H-field, magnetic field strength or intensity) in the CGS system of units.
Okta
"Okta" is the unit of measurement to describe the amount of cloud cover. Okta is reported in eighths of the celestial dome covered by all clouds visible. The codes represent: 0: 0/8, the complete absence of cloud; 1: 1/8 or less, but not zero; 2: 2/8; 3: 3/8; 4: 4/8, half of the sky is covered; 5: 5/8; 6: 6/8; 7: 7/8 or more, but not 8/8; 8: 8/8, sky is completely covered; 9: Sky obscured by fog and/or other meteorological phenomena; /: Cloud cover is indiscernible for reasons other than fog or other meteorological phenomena, or observation is not made.
unit consisting of the quotient of two similar sizes, whose units can be reduced against each other and not displayed by other units of the dimension one
One osmole is the amount of osmotically active material that when dissolved in 22.4L of solvent at 0 degrees celsius exerts an osmotic pressure of 1 atmosphere.
Imperial Mass Ounce per Square Foot
"Ounce per Square Foot" is an Imperial unit for 'Mass Per Area' expressed as $oz/ft^{2}$.
Imperial Mass Ounce per Square Yard
"Ounce per Square Yard" is an Imperial unit for 'Mass Per Area' expressed as $oz/yd^{2}$.
Imperial Ounce Force Inch
"Ounce Force Inch" is an Imperial unit for 'Torque' expressed as $ozf-in$.
Ounce (UK Fluid) per Day
unit of the volume fluid ounce (UK) for fluids according to the Imperial system of units divided by the unit for time day
Ounce (UK Fluid) per Hour
unit of the volume fluid ounce (UK) for fluids according to the Imperial system of units divided by the unit for time hour
Ounce (UK Fluid) per Minute
unit of the volume fluid ounce (UK) for fluids according to the Imperial system of units divided by the unit for time minute
Ounce (UK Fluid) per Second
unit of the volume fluid ounce (UK) for fluids according to the Imperial system of units divided by the SI base unit second
Ounce (US Fluid) per Day
unit of the volume fluid ounce (US) for fluids according to the Anglo-American system of units divided by unit for time day
Ounce (US Fluid) per Hour
unit of the volume fluid ounce (US) for fluids according to the Anglo-American system of units divided by the unit for time hour
Ounce (US Fluid) per Minute
unit of the volume fluid ounce (US) for fluids according to the Anglo-American system of units divided by the unit for time minute
Ounce (US Fluid) per Second
unit of the volume fluid ounce (US) for fluids according to the Anglo-American system of units divided by the SI base unit second
product from the non SI-conform unit of the force poundal and the unit foot according to the Anglo-American and Imperial system of units
product of the non SI-conform unit of the force poundal and the unit inch according to the Anglo-American and Imperial system of units
non SI-conform unit of the surface tension according to the Imperial unit system as quotient poundal by inch
Reciprocal Bar
reciprocal of the metrical unit with the name bar
Reciprocal Litre
Reciprocal Liter
Reciprocal Cubic Metre
Reciprocal Cubic Meter
"Per Cubic Meter" is a denominator unit with dimensions $/m^3$.
Reciprocal Mille Psi
thousandth divided by the composed unit for pressure (pound-force per square inch)
Reciprocal Cubic Millimetre
Reciprocal Cubic Millimeter
reciprocal value of the 0.000000001-fold of the power of the SI base unit metre with the exponent 3
Reciprocal Psi
reciprocal value of the composed unit for pressure (pound-force per square inch)
Pint (UK) per Day
unit of the volume pint (UK) (both for fluids and for dry measures) according to the Imperial system of units divided by the unit for time day
Pint (UK) per Hour
unit of the volume pint (UK) (both for fluids and for dry measures) according to the Imperial system of units divided by the unit for time hour
Pint (UK) per Minute
unit of the volume pint (UK) (both for fluids and for dry measures) according to the Imperial system of units divided by the unit for time minute
Pint (UK) per Second
unit of the volume pint (UK) (both for fluids and for dry measures) according to the Imperial system of units divided by the SI base unit second
Pint (US Liquid) per Day
unit of the volume pint (US liquid) according to the Anglo-American system of units divided by the unit for time day
Pint (US Liquid) per Hour
unit of the volume pint (US liquid) according to the Anglo-American system of units divided by the unit for time hour
Pint (US Liquid) per Minute
unit of the volume pint (US liquid) according to the Anglo-American system of units divided by the unit for time minute
Pint (US Liquid) per Second
unit of the volume pint (US liquid) according to the Anglo-American system of units divided by the SI base unit second
Peck (UK) per Day
unit of the volume peck (UK) according to the Imperial system of units divided by the unit for time day
Peck (UK) per Hour
unit of the volume peck (UK) according to the Imperial system of units divided by the unit for time hour
Peck (UK) per Minute
unit of the volume peck (UK) according to the Imperial system of units divided by the unit for time minute
Peck (UK) per Second
unit of the volume peck (UK) according to the Imperial system of units divided by the SI base unit second
Peck (US Dry) per Day
unit of the volume peck (US dry) as dry measure according to the Anglo-American system of units divided by the unit for time day
Peck (US Dry) per Hour
unit of the volume peck (US dry) as dry measure according to the Anglo-American system of units divided by the unit for time hour
Peck (US Dry) per Minute
unit of the volume peck (US dry) as dry measure according to the Anglo-American system of units divided by the unit for time minute
Peck (US Dry) per Second
unit of the volume peck (US dry) as dry measure according to the Anglo-American system of units divided by the SI base unit second
PetaCoulomb
PicoCoulomb
Planck Charge
In physics, the Planck charge, denoted by, is one of the base units in the system of natural units called Planck units. It is a quantity of electric charge defined in terms of fundamental physical constants. The Planck charge is defined as: coulombs, where: is the speed of light in the vacuum, is Planck's constant, is the reduced Planck constant, is the permittivity of free space is the elementary charge = (137.03599911) is the fine structure constant. The Planck charge is times greater than the elementary charge $e$ carried by an electron.
Quart (UK Liquid) per Day
unit of the volume quart (UK liquid) for fluids according to the Imperial system of units divided by the unit for time day
Quart (UK Liquid) per Hour
unit of the volume quart (UK liquid) for fluids according to the Imperial system of units divided by the unit for time hour
Quart (UK Liquid) per Minute
unit of the volume quart (UK liquid) for fluids according to the Imperial system of units divided by the unit for time minute
Quart (UK Liquid) per Second
unit of the volume quart (UK liquid) for fluids according to the Imperial system of units divided by the SI base unit second
Quart (US Liquid) per Day
unit fo the volume quart (US liquid) for fluids according to the Anglo-American system of units divided by the unit for time day
Quart (US Liquid) per Hour
unit fo the volume quart (US liquid) for fluids according to the Anglo-American system of units divided by the unit for time hour
Quart (US Liquid) per Minute
unit fo the volume quart (US liquid) for fluids according to the Anglo-American system of units divided by the unit for time minute
Quart (US Liquid) per Second
unit fo the volume quart (US liquid) for fluids according to the Anglo-American system of units divided by the SI base unit second
radiánů na metr
Radiant je Meter
radian per metre
Radian per Meter
radián por metro
رادیان بر متر
radian par mètre
प्रति मीटर वर्ग मीटर
radiante al metro
ラジアン毎メートル
radian per meter
radian na metr
radiano por metro
radiane pe metru
радиан на метр
radyan bölü metre
弧度每米
Rem
A Rem is a deprecated unit used to measure the biological effects of ionizing radiation. The rem is defined as equal to 0.01 sievert, which is the more commonly used unit outside of the United States. Equivalent dose, effective dose, and committed dose can all be measured in units of rem. These quantities are products of the absorbed dose in rads and weighting factors. These factors must be selected for each exposure situation; there is no universally applicable conversion constant from rad to rem. A rem is a large dose of radiation, so the millirem (mrem), which is one thousandth of a rem, is often used for the dosages commonly encountered, such as the amount of radiation received from medical x-rays and background sources.
roentgen equivalent man
The roentgen equivalent man (rem) is a CGS unit of equivalent dose, effective dose, and committed dose, which are dose measures used to estimate potential health effects of low levels of ionizing radiation on the human body.
Seconds per metre
Shannon
Slug per Square Foot
"Slug per Square Foot" is an Imperial unit for 'Mass Per Area' expressed as $slug/ft^{2}$.
tonne per hectare year
A measure of density equivalent to 1000kg per hectare per year or one Megagram per hectare per year, typically used to express a volume of biomass or crop yield.
Short Ton per Hour
The short Ton per Hour is a unit used to express a weight processed in a period of time.
TeraCoulomb
Volt Second per Metre
Volt Second per Meter
Volt Second Per Metre is the product of the SI derived unit volt and the SI base unit second divided by the SI base unit metre
product of the SI derived unit volt and the SI base unit second divided by the SI base unit metre
Watt hour per square metre
A unit of energy per unit area, equivalent to 3,600 joules per square metre.
Watthour per Cubic metre
Watthour per Cubic meter
The watt hour per cubic meter is a unit of energy density, equal to 3,600 joule per cubic meter.
Watt per Square Metre Steradian
Watt per Square Meter Steradian
$\textit{Watt per steradian per square metre}$ is the SI unit of radiance ($W·sr^{-1}·m^{-2}$), while that of spectral radiance in frequency is the watt per steradian per square metre per hertz ($W·sr^{-1}·m^{-2}·Hz^{-1}$) and that of spectral radiance in wavelength is the watt per steradian per square metre, per metre ($W·sr^{-1}·m^{-3}$), commonly the watt per steradian per square metre per nanometre ($W·sr^{-1}·m^{-2}·nm^{-1}$). It has a dimension of $ML^{-4}T^{-3}$ where $M$ is mass, $L$ is length, and $T$ is time. This unit is the standard SI unit in this category."
Watt seconds per square metre
Cubic Yard per Day
power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for time day
Cubic Yard per Hour
power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for the time hour
Cubic Yard per Minute
$\textit{Cubic Yard per Minute}$ is an Imperial unit for 'Volume Per Unit Time' expressed as $yd^{3}/min$.
Cubic Yard per Second
power of the unit and the Anglo-American and Imperial system of units with the exponent 3 divided by the SI base unit second
YoctoCoulomb
YottaCoulomb
ZeptoCoulomb
ZettaCoulomb
Air Diffuser
A device that is a component of the air distribution system that controls the delivery of conditioned and/or ventilating air into a room
Air Flow Alarm
An alarm related to air flow.
Air Plenum
A component of the HVAC the receives air from the air handling unit or room to distribute or exhaust to or from the building
Air Temperature Alarm
An alarm that indicates the off-normal conditions associated with the temperature of air.
Air Velocity Pressure Sensor
Measures the difference between total air pressure and static air pressure.
Baseboard Radiator
Steam, hydronic, or electric heating device located at or near the floor.
Booster Pump
Used to increase the pressure and flow of a fluid, typically water, in a system to ensure adequate supply where needed.
Building
An independent unit of the built environment with a characteristic spatial structure, intended to serve at least one function or user activity [ISO 12006-2:2013]
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Building
Bypass Air
air in a bypass duct, used to relieve static pressure
Bypass Water
Water that circumvents a piece of equipment or system
Circulator Pump
Used to move hot or cold water in a closed circuit, ensuring continuous fluid flow.
Collection Basin Water
Water transiently collected and directed to the sump or pump suction line, typically integral with a cooling tower
Computer Room Air Conditioning
A device that monitors and maintains the temperature, air distribution and humidity in a network room or data center.
Controller
Cooling Only Condensing Unit
Current Sensor
Senses the amperes of electrical current passing through the sensor
Deionized Water
Water which has been purified by removing its ions (constituting the majority of non-particulate contaminants)
Demand Sensor
Measures the amount of power consumed by the use of some process; typically found by multiplying the tonnage of a unit (e.g. RTU) by the efficiency rating in kW/ton
Differential Pressure Load Shed Status
Differential Pressure Sensor
Measures the difference between two applied pressures
Differential Pressure Setpoint
Sets differential pressure
Discharge Air Static Pressure Setpoint
Sets static pressure of discharge air
Discharge Air Temperature Cooling Setpoint
Sets temperature of discharge air for cooling
Discharge Air Temperature Heating Setpoint
Sets temperature of discharge air for heating
Discharge Air Temperature Setpoint
Sets temperature of discharge air
Discharge Water Flow Sensor
Disconnect Switch
A disconnect switch performs the task of manually cutting or reconnecting power from an electrical supply by creating or closing an air insulation gap between two conduction points. Also known as an 'Isolation Switch'.
Domestic Hot Water Temperature Sensor
Duration Sensor
Measures the duration of a phenomenon or event
Electrical Room
A class of service rooms that house electrical equipment for a building
Emergency Wash Station
Enclosed Office
A space for individuals to work with walls and a door
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Worksapce
Flow Sensor
Measures the rate of flow of some substance
Fluid
substance, as a liquid or gas, that is capable of flowing and that changes shape when acted on by a force.
Gain Parameter
HVAC Valve
Heat Pump Condensing Unit
An outdoor HVAC unit that functions in both heating and cooling modes. It includes a reversing valve along with a condenser coil and compressor, enabling the switch between cooling and heating by reversing refrigerant flow.
Heating Valve
A valve that controls air temperature by modulating the amount of hot water flowing through a heating coil
High Temperature Alarm
An alarm that indicates high temperature.
Hot Water Flow Setpoint
Sets the target flow rate of hot water
Hot Water Supply Temperature Sensor
Hot Water Temperature Setpoint
Sets the temperature of hot water
Humidity Parameter
Parameters relevant to humidity-related systems and points
ICT Hardware
Load Shed Command
Controls load shedding behavior provided by a control system
Load Shed Setpoint
Load Shed Status
Indicates if a load shedding policy is in effect
Loop
A collection of connected equipment; part of a System
Low Temperature Alarm
An alarm that indicates low temperature.
Media Room
A class of spaces related to the creation of media
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Media_Room
Mode Command
Controls the operating mode of a device or controller
Occupancy
Off Status
Indicates if a control loop, relay or equipment is off
Office
A class of rooms dedicated for work or study
Outside Air Temperature Sensor
Measures the temperature of outside air
PM10 Concentration
The concentration of particulates with diameter of 10 microns or less in air
PM1 Concentration
The concentration of particulates with diameter of 1 microns or less in air
PM2.5 Concentration
The concentration of particulates with diameter of 2.5 microns or less in air
PV Panel
An integrated assembly of interconnected photovoltaic cells designed to deliver a selected level of working voltage and current at its output terminals packaged for protection against environment degradation and suited for incorporation in photovoltaic power systems.
Position Sensor
Measures the current position of a component in terms of a fraction of its full range of motion
Pressure Status
Indicates if pressure is within expected bounds
Pump
Machine for imparting energy to a fluid, causing it to do work, drawing a fluid into itself through an entrance port, and forcing the fluid out through an exhaust port.
Radiant Panel Temperature Sensor
Measures the temperature of the radiant panel of the radiant heating and cooling HVAC system.
Radiant Panel Temperature Setpoint
Sets temperature of radiant panel.
Refrigerant Metering Device
Responsible for regulating refrigerant flow, which includes mechanisms like TXVs, EXVs, and capillary tubes
Reset Command
Commands that reset a flag, property or value to its default
Return Air Temperature Setpoint
The target temperature for return air, often used as an approximation of zone air temperature
Return Water Flow Sensor
Return Water Temperature Setpoint
Room Air Temperature Setpoint
Sets temperature of room air
Safety System
Service Room
A class of spaces related to the operations of building subsystems, e.g. HVAC, electrical, IT, plumbing, etc
Speed Sensor
Measures the magnitude of velocity of some form of movement
Static Pressure Proportional Band Parameter
Static Pressure Setpoint Limit
A parameter that places a lower or upper bound on the range of permitted values of a Static_Pressure_Setpoint.
Step Parameter
Supply Air Plenum
A component of the HVAC the receives air from the air handling unit to distribute to the building
Supply Water Flow Sensor
TVOC Concentration
The concentration of total volatile organic compounds in air
Tank
A container designed to hold or store fluids for various applications within a system.
Thermal Expansion Tank
A tank designed to accommodate the expansion and contraction of a fluid, typically water, in a closed heating or cooling system.
Video Surveillance Equipment
Voltage Sensor
Measures the voltage of an electrical device or object
Water Differential Pressure Sensor
Measures the difference in water pressure between two points in a system.
Water Level Alarm
An alarm that indicates a high or low water level e.g. in a basin
Water Meter
A meter that measures the usage or consumption of water
Water Pump
A pump that performs work on water
Water System
The equipment, devices and conduits that handle the production and distribution of water in a building
Zone Air Temperature Sensor
A physical or virtual sensor which represents the temperature of an HVAC Zone
Conversion efficiency
The percent efficiency of the conversion process (usually to power or energy) carried out by the entity
deprecatedInVersion
deprecationMitigationMessage
deprecationMitigationRule
Has Substance
Is fed by
is metered by
Indicates the meter measuring the consumption/production of some substance by the subject entity
Is point of
The subject is a source of telemetry related to the object. In some systems the source of telemetry may be represented as a digital/analog input/output point
Rated current input
The nominal rated current input of the entity
Rated current output
The nominal rated current output of the entity
Measured voltage input
The nominal rated voltage input of the entity
Rated voltage output
The nominal rated voltage output of the entity
hasPoint
locatedIn
for encoding of values into this octet string see ANNEX P
Area Time
Applicable units are those of quantitykind:AreaTime
Body Mass Index
$\textit{Body Mass Index}$, BMI, is an index of weight for height, calculated as: $BMI = \frac{M_{body}}{H^2}$, where $M_{body}$ is body mass in kg, and $H$ is height in metres. The BMI has been used as a guideline for defining whether a person is overweight because it minimizes the effect of height, but it does not take into consideration other important factors, such as age and body build. The BMI has also been used as an indicator of obesity on the assumption that the higher the index, the greater the level of body fat.
Applicable units are those of quantitykind:BodyMassIndex
CountRate
A measure of a number of items counted per time period.
This measure may be used for measuring integer units per second or per hour. For example, it may be used to measure the number of books per hour passing along a part of a mechanical book handling system, the number of people per hour travelling along a moving walkway or the number of vehicles per hour travelling along a section of road.
Applicable units are those of quantitykind:CountRate
Electric Charge Surface Density
$\rho_A = \frac{dQ}{dA}$, where $Q$ is electric charge and $A$ is Area.
Applicable units are those of quantitykind:ElectricChargeSurfaceDensity
عزم ثنائي قطب
Dipólový moment
elektrisches Dipolmoment
electric dipole moment
momento de dipolo eléctrico
گشتاور دوقطبی الکتریکی
moment dipolaire
विद्युत द्विध्रुव आघूर्ण
momento di dipolo elettrico
電気双極子
Momen dwikutub elektrik
elektryczny moment dipolowy
momento do dipolo elétrico
moment electric dipolar
Электрический дипольный момент
elektrik dipol momenti
电偶极矩
"Electric Dipole Moment" is a measure of the separation of positive and negative electrical charges in a system of (discrete or continuous) charges. It is a vector-valued quantity. If the system of charges is neutral, that is if the sum of all charges is zero, then the dipole moment of the system is independent of the choice of a reference frame; however in a non-neutral system, such as the dipole moment of a single proton, a dependence on the choice of reference point arises. In such cases it is conventional to choose the reference point to be the center of mass of the system or the center of charge, not some arbitrary origin. This convention ensures that the dipole moment is an intrinsic property of the system. The electric dipole moment of a substance within a domain is the vector sum of electric dipole moments of all electric dipoles included in the domain.
$E_p = -p \cdot E$, where $E_p$ is the interaction energy of the molecule with electric dipole moment $p$ and an electric field with electric field strength $E$. $p = q(r_+ - r_i)$, where $r_+$ and $r_-$ are the position vectors to carriers of electric charge $a$ and $-q$, respectively.
Applicable units are those of quantitykind:ElectricDipoleMoment
Electric Field
The space surrounding an electric charge or in the presence of a time-varying magnetic field has a property called an electric field. This electric field exerts a force on other electrically charged objects. In the idealized case, the force exerted between two point charges is inversely proportional to the square of the distance between them. (Coulomb's Law).
إستقطاب كهربائي
elektrische Polarisation
electric polarization
polarización eléctrica
polarisation électrique
polarizzazione elettrica
電気分極
polaryzacja elektryczna
polarização eléctrica
электрическая поляризация
"Electric Polarization" is the relative shift of positive and negative electric charge in opposite directions within an insulator, or dielectric, induced by an external electric field. Polarization occurs when an electric field distorts the negative cloud of electrons around positive atomic nuclei in a direction opposite the field. This slight separation of charge makes one side of the atom somewhat positive and the opposite side somewhat negative. In some materials whose molecules are permanently polarized by chemical forces, such as water molecules, some of the polarization is caused by molecules rotating into the same alignment under the influence of the electric field. One of the measures of polarization is electric dipole moment, which equals the distance between the slightly shifted centres of positive and negative charge multiplied by the amount of one of the charges. Polarization P in its quantitative meaning is the amount of dipole moment p per unit volume V of a polarized material, P = p/V.
$P =\frac{dp}{dV}$, where $p$ is electic charge density and $V$ is volume.
Applicable units are those of quantitykind:ElectricPolarization
Energy Fluence
"Energy Fluence" can be used to describe the energy delivered per unit area
$\Psi = \frac{dR}{dA}$, where $dR$ describes the sum of radiant energies, exclusive of rest energy, of all particles incident on a small spherical domain, and $dA$ describes the cross-sectional area of that domain.
Applicable units are those of quantitykind:EnergyFluence
Applicable units are those of quantitykind:FloatingPointCalculationCapability
Friction Coefficient
"Friction Coefficient" is the ratio of the force of friction between two bodies and the force pressing them together
Hall Coefficient
"Hall Coefficient" is defined as the ratio of the induced electric field to the product of the current density and the applied magnetic field.
In an isotropic conductor, the relation between electric field strength, $E$, and electric current density, $J$ is $E = \rho J + R_H(B X J)$, where $\rho$ is resistivity, and $B$ is magnetic flux density.
Applicable units are those of quantitykind:HallCoefficient
impulse
product of force and time
Produkt aus Kraft und Zeit
Applicable units are those of quantitykind:Impulse
Luminous Energy
Luminous Energy is the perceived energy of light. This is sometimes also called the quantity of light.
$Q_v = \int_{0}^{\Delta t}{\Phi_v}{dt}$, where $\Phi_v$ is the luminous flux occurring during the time interval with duration $\Delta t$.
Applicable units are those of quantitykind:LuminousEnergy
magnetický potenciál
magnetisches Potenzial
magnetic vector potential
potencial magnético
پتانسیل برداری مغناطیسی
potentiel magnétique
potenziale vettore magnetico
Keupayaan vektor magnetik
potencjał magnetyczny
potențial magnetic
Магнитний потенциал
manyetik potansiyeli
磁向量势
"Magnetic Vector Potential" is the vector potential of the magnetic flux density. The magnetic vector potential is not unique since any irrotational vector field quantity can be added to a given magnetic vector potential without changing its rotation. Under static conditions the magnetic vector potential is often chosen so that its divergence is zero.
$B = \text{rot} A$, where $B$ is magnetic flux density.
Applicable units are those of quantitykind:MagneticVectorPotential
Mass Specific Biogeochemical Rate
the rate at which a specific chemical element or compound is processed or transformed within an ecosystem, calculated per unit mass of the relevant biological material. Unreduced, SI unit is kg * kg-1 * s-1
the rate at which a specific chemical element or compound is processed or transformed within an ecosystem, calculated per unit mass of the relevant biological material. Unreduced, SI unit is g * g-1 * s-1
Applicable units are those of quantitykind:MassSpecificBiogeochemicalRate
Orbital Angular Momentum Quantum Number
The "Principal Quantum Number" describes the electron shell, or energy level, of an atom. The value of $n$ ranges from 1 to the shell containing the outermost electron of that atom.
$l^2 = \hbar^2 l(l + 1), l = 0, 1, ..., n - 1$, where $l_i$ refers to a specific particle $i$.
Applicable units are those of quantitykind:OrbitalAngularMomentumQuantumNumber
Radiant Fluence
$H_0 = \int_{0}^{\Delta t}{E_0}{dt}$, where $E_0$ is the spherical radiance acting during time interval with duration $\Delta t$.
Applicable units are those of quantitykind:RadiantFluence
Reflectance
Reflectance generally refers to the fraction of incident power that is reflected at an interface, while the term "reflection coefficient" is used for the fraction of electric field reflected. Reflectance is always a real number between zero and 1.0.
$\rho = \frac{\Phi_t}{\Phi_m}$, where $\Phi_t$ is the reflected radiant flux, the reflected luminous flux, or the reflected sound power and $\Phi_m$ is the incident radiant flux, incident luminous flux, or incident sound power, respectively.
Reaction Rate Constant
A quantity kind that is a proportionality constant that quantifies the relationship between the molar concentrations of the reactants and the rate of a second order chemical reaction.
Applicable units are those of quantitykind:SecondOrderReactionRateConstant
Specific Impulse
The impulse produced by a rocket divided by the mass $mp$ of propellant consumed. Specific impulse ${I_{sp}}$ is a widely used measure of performance for chemical, nuclear, and electric rockets. It is usually given in seconds for both U.S. Customary and International System (SI) units. The impulse produced by a rocket is the thrust force $F$ times its duration $t$ in seconds. $I_{sp}$ is the thrust per unit mass flowrate, but with $g_o$, is the thrust per weight flowrate. The specific impulse is given by the equation: $I_{sp} = \frac{F}{\dot{m}g_o}$.
Spectral Cross-section
"Spectral Cross-section" is the cross-section for a process in which the energy of the ejected or scattered particle is in an interval of energy, divided by the range $dE$ of this interval.
Applicable units are those of quantitykind:SpectralCrossSection
Spectral Radiant Energy Density
"Spectral Radiant Energy Density" is the spectral concentration of radiant energy density (in terms of wavelength), or the spectral radiant energy density (in terms of wave length).
Applicable units are those of quantitykind:SpectralRadiantEnergyDensity
Temperature Ratio
Applicable units are those of quantitykind:TemperatureRatio
Thermal Resistivity
The reciprocal of thermal conductivity is thermal resistivity, measured in $kelvin-metres$ per watt ($K \cdot m/W$).
Applicable units are those of quantitykind:ThermalResistivity
Total Linear Stopping Power
The "Total Linear Stopping Power" is defined as the average energy loss of the particle per unit path length.
$S = -\frac{dE}{dx}$, where $-dE$ is the energy decrement in the $x-direction$ along an elementary path with the length $dx$.
Applicable units are those of quantitykind:TotalLinearStoppingPower
أمبير في المتر المربع
ampér na metr čtvereční
Ampere je Quadratmeter
ampere per square metre
Ampere per Square Meter
amperio por metro cuadrado
آمپر بر مترمربع
ampère par mètre carré
एम्पीयर प्रति वर्ग मीटर
ampere al metro quadrato
アンペア毎平方メートル
ampere per meter persegi
amper na metr kwadratowy
ampere por metro quadrado
ampere pe metru pătrat
ампер на квадратный метр
amper na kvadratni meter
amper bölü metre kare
安培每平方米
$\textit{Ampere Per Square Meter}$ is a unit in the category of electric current density. This unit is commonly used in the SI unit system.
British Thermal Unit (international Table) per Minute
unit of the heat energy according to the Imperial system of units divided by the unit minute
British Thermal Unit (thermochemical) per Minute
British Thermal Unit (thermochemical) per Second
unit of the heat energy according to the Imperial system of units divided by the SI base unit second
Calorie (thermochemical) per Minute
Calorie (thermochemical) per Second
unit calorie divided by the SI base unit second
candela per square metre
candela per square meter
The candela per square metre ($cd/m^2$) is the derived SI unit of luminance. The unit is based on the candela, the SI unit of luminous intensity, and the square metre, the SI unit of area. Nit (nt) is a deprecated non-SI name also used for this unit ($1 nit = 1 cd/m^2$). As a measure of light emitted per unit area, this unit is frequently used to specify the brightness of a display device. Most consumer desktop liquid crystal displays have luminances of 200 to 300 $cd/m^2$; the sRGB spec for monitors targets 80 cd/m2. HDTVs range from 450 to about 1000 cd/m2. Typically, calibrated monitors should have a brightness of $120 cd/m^2$. $Nit$ is believed to come from the Latin word nitere, to shine.
Abcoulomb
"abcoulomb" (abC or aC) or electromagnetic unit of charge (emu of charge) is the basic physical unit of electric charge in the cgs-emu system of units. One abcoulomb is equal to ten coulombs ($1\,abC\,=\,10\,C$).
Centimetre per Square Second
Centimeter per Square Second
$\textit{Centimeter per Square Second}$ is a C.G.S System unit for $\textit{Linear Acceleration}$ expressed as $cm/s^2$.
0.001-fold of the power of the SI base unit meter by exponent 3 divided by the SI based unit kilogramm
Elementary Charge
$\textit{Elementary Charge}$, usually denoted as $e$, is the electric charge carried by a single proton, or equivalently, the negation (opposite) of the electric charge carried by a single electron. This elementary charge is a fundamental physical constant. To avoid confusion over its sign, e is sometimes called the elementary positive charge. This charge has a measured value of approximately $1.602176634 \times 10^{-19} coulombs$. In the cgs system, $e$ is $4.80320471257026372 \times 10^{-10} statcoulombs$.
Erg per Square Centimetre
Erg per Square Centimeter
Derived CGS unit erg divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Erg per Gram Second
Erg Second
Electron Volt Second
"Electron Volt Second" is a unit for 'Angular Momentum' expressed as $eV s$.
Franklin
"Franklin" is a unit for 'Electric Charge' expressed as $Fr$.
Foot Pound Force Second
"Foot Pound Force Second" is a unit for 'Angular Momentum' expressed as $lbf / s$.
Foot per Square Second
$\textit{Foot per Square Second}$ is an Imperial unit for $\textit{Linear Acceleration}$ expressed as $ft/s^2$.
power of the unit foot according to the Anglo-American and Imperial system of units by exponent 3 divided by the unit avoirdupois pound according to the avoirdupois unit system
Femtograms per kilogram
One part per 10**18 by mass of the measurand in the matrix.
Gram per Gram
mass ratio consisting of the 0.001-fold of the SI base unit kilogram divided by the 0.001-fold of the SI base unit kilogram.
Gram Per Hectogram
0,001-fold of the SI base unit kilogram divided by 0.1-fold of the SI base unit kilogram
Gram per Kilogram
0,001 fold of the SI base unit kilogram divided by the SI base unit kilogram
grams per square metre day
grams per square meter day
A metric unit of volume over time indicating the amount generated across one square meter over a day.
GigaCoulomb
Inch per Square second
$\textit{Inch per Square second}$ is an Imperial unit for $\textit{Linear Acceleration}$ expressed as $in/s^2$.
power of the unit inch according to the Anglo-American and Imperial system of units by exponent 3 divided by the avoirdupois pound according to the avoirdupois unit system
Joule per Square Centimetre
Joule per Square Centimeter
derived SI unit joule divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Knot per Second
$\textit{Knot per Second}$ is a unit for 'Linear Acceleration' expressed as $kt/s$.
Kilo British Thermal Unit (thermochemical) per Hour
unit of the heat energy according to the Imperial system of units divided by the unit hour
Kilocalorie (thermochemical) per Hour
1 000-fold of the non-legal unit thermochemical calorie divided by the unit hour
Kilocalorie (thermochemical) per Minute
1000-fold of the unit calorie divided by the unit minute
Kilocalorie (thermochemical) per Second
1000-fold of the unit calorie divided by the SI base unit second
Kilogauss
1 000-fold of the CGS unit of the magnetic flux density B
Kilogram Square Metre per Second
Kilogram Square Meter per Second
"Kilogram Square Meter Per Second" is a unit for 'Angular Momentum' expressed as $kg-m^2-s^{-1}$.
Kilogram per Kilogram
SI base unit kilogram divided by the SI base unit kilogram
Kilograms per square kilometre
One SI standard unit of mass over the square of one thousand standard unit of length.
Kilograms per square metre second
Kilohertz Metre
Kilohertz Meter
product of the 1 000-fold of the SI derived unit hertz and the SI base unit metre
1,000-fold of the SI base unit metre divided by the power of the SI base unit second by exponent 2
Kilopascal Square Metre per Gram
Kilopascal Square Meter per Gram
sector-specific unit of the burst index as 1 000-fold of the derived unit for pressure pascal related to the substance, represented as a quotient from the 0.001-fold of the SI base unit kilogram divided by the power of the SI base unit metre by exponent 2
Kilovolt Ampere Hour
product of the 1 000-fold of the unit for apparent by ampere and the unit hour
Kilovolt Ampere Reactive Hour
product of the 1,000-fold of the unit volt ampere reactive and the unit hour
product of the 1 000-fold of the unit volt ampere reactive and the unit hour
Litre per Kilogram
Liter per Kilogram
unit of the volume litre divided by the SI base unit kilogram
proportion of the mass consisting of the avoirdupois pound according to the avoirdupois unit system divided by the avoirdupois pound according to the avoirdupois unit system
SI base unit metre divided by the product of the unit degree Celsius and the SI base unit metre
Metre per Square Second
Meter per Square Second
The $\textit{meter per Square second}$ is the unit of acceleration in the International System of Units (SI). As a derived unit it is composed from the SI base units of length, the metre, and the standard unit of time, the second. Its symbol is written in several forms as $m/s^2$, or $m s^{-2}$. As acceleration, the unit is interpreted physically as change in velocity or speed per time interval, that is, $\textit{metre per second per second}$.
Square Metre per Kilogram
Square Meter per Kilogram
Square Meter Per Kilogram (m2/kg) is a unit in the category of Specific Area. It is also known as square meters per kilogram, square metre per kilogram, square metres per kilogram, square meter/kilogram, square metre/kilogram. This unit is commonly used in the SI unit system. Square Meter Per Kilogram (m2/kg) has a dimension of M-1L2 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
Cubic Metre per Kilogram
Cubic Meter per Kilogram
Cubic Meter Per Kilogram (m3/kg) is a unit in the category of Specific volume. It is also known as cubic meters per kilogram, cubic metre per kilogram, cubic metres per kilogram, cubic meter/kilogram, cubic metre/kilogram. This unit is commonly used in the SI unit system. Cubic Meter Per Kilogram (m3/kg) has a dimension of M-1L3 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
Mho
"Mho" is a C.G.S System unit for 'Electric Conductivity' expressed as $mho$.
unit of the length according to the Imperial system of units divided by the power of the SI base unit second by exponent 2
Megajoule per Square Metre
Megajoule per Square Meter
MegaJoule Per Square Meter ($MegaJ/m^2$) is a unit in the category of Energy density.
Megavolt Ampere Hour
product of the 1,000,000-fold of the unit for apparent by ampere and the unit hour
Megavolt Ampere Reactive Hour
product of the 1,000,000-fold of the unit volt ampere reactive and the unit hour
Microgravity
"Microgravity" is a unit for 'Linear Acceleration' expressed as $microG$.
Micrograms per gram
One part per 10**6 (million) by mass of the measurand in the matrix.
Microgram per Square Inch
Microgram Per Square Inch (µg/in²) is a unit in the category of surface density.
Microgram per Kilogram
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by the SI base unit kilogram
Microgram per Milligram
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by 0.000001-fold of SI base unit kilogram
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by 0.000001-fold of the SI base unit kilogram
MicroGray
0.000001 fold of the SI unit of radiation dose. Radiation carries energy, and when it is absorbed by matter the matter receives this energy. The dose is the amount of energy deposited per unit of mass. One gray is defined to be the dose of one joule of energy absorbed per kilogram of matter, or 100 rad. The unit is named for the British physician L. Harold Gray (1905-1965), an authority on the use of radiation in the treatment of cancer.
MicroSievert
Although the sievert has the same dimensions as the gray (i.e. joules per kilogram), it measures a different quantity. To avoid any risk of confusion between the absorbed dose and the equivalent dose, the corresponding special units, namely the gray instead of the joule per kilogram for absorbed dose and the sievert instead of the joule per kilogram for the dose equivalent, should be used. 0.000001-fold of the SI derived unit sievert.
Microtesla
0.000001-fold of the SI derived unit tesla
Milligravity
"Milligravity" is a unit for 'Linear Acceleration' expressed as $mG$.
Milligram per Gram
0.000001-fold of the SI base unit kilogram divided by the 0.001-fold of the SI base unit kilogram
Milligram per Kilogram
0.000001-fold of the SI base unit kilogram divided by the SI base unit kilogram
Milligray
Millihenry
A unit of inductance equal to one thousandth of a henry.
0.001-fold of the SI unit metre divided by the product of the unit degree Celsius and the SI base unit metre
0.001-fold of the SI base unit metre divided by the power of the SI base unit second by exponent 2
Cubic Millimetre per Gram
Cubic Millimeter per Gram
Cubic Millimeter Per Gram (mm3/g) is a unit in the category of Specific Volume. It is also known as cubic millimeters per gram, cubic millimetre per gram, cubic millimetres per gram, cubic millimeter/gram, cubic millimetre/gram.
Cubic Millimetre per Kilogram
Cubic Millimeter per Kilogram
Cubic Millimeter Per Kilogram (mm3/kg) is a unit in the category of Specific Volume. It is also known as cubic millimeters per kilogram, cubic millimetre per kilogram, cubic millimetres per kilogram, cubic millimeter/kilogram, cubic millimetre/kilogram.
Millisiemens
0.001-fold of the SI derived unit siemens
Millisievert
0.001-fold of the SI derived unit sievert
Millitesla
نيوتن متر
нютон-метър
newton metr
Newtonmeter
νιούτον επί μέτρο; νιουτόμετρο
newton metre
Newton Meter
newton metro
newton-mètre
न्यूटन मीटर
newton per metro
ニュートンメートル
newton meter
niutonometr; dżul na radian
newton-metro
newton-metru
ньютон-метр
牛米
"Torque" is the tendency of a force to cause a rotation, is the product of the force and the distance from the center of rotation to the point where the force is applied. Torque has the same units as work or energy, but it is a different physical concept. To stress the difference, scientists measure torque in newton meters rather than in joules, the SI unit of work. One newton meter is approximately 0.737562 pound foot.
product of the SI derived unit newton and the SI base unit metre divided by the unit minute [unit of angle]
نيوتن متر ثانية
newton metr sekunda
Newtonmetersekunde
newton metre second
Newton Meter Second
newton metro segundo
newton-mètre-seconde
न्यूटन मीटर सैकण्ड
newton metro secondo
ニュートンメートル秒
newton meter saat
niutonometrosekunda
newton-metro-segundo
newton-metru-secundă
ньютон-метр-секунда
newton metre saniye
The SI derived unit of angular momentum.
Nanogram per Kilogram
mass ratio consisting of the 0.000000000001-fold of the SI base unit kilogram divided by the SI base unit kilogram
Nanogram per Milligram
mass ratio consisting of the 0.000000000001-fold of the SI base unit kilogram divided by the milligram
NanoSiemens
Nanotesla
0.000000001-fold of the SI derived unit tesla
Parts-Per-Million per Kelvin
Unit for expansion ratios expressed as parts per million per Kelvin.
Parts-Per-Ten Million per Kelvin
Unit for expansion ratios expressed as parts per ten million per Kelvin.
1,000,000,000,000,000-fold of the SI derived unit ampere
picoampere
Picograms per gram
One part per 10**12 (trillion) by mass of the measurand in the matrix.
Picograms per kilogram
One part per 10**15 by mass of the measurand in the matrix.
Picograms per milligram
One part per 10**9 (billion) by mass of the measurand in the matrix.
PicoSiemens
0.000000000001-fold of the SI derived unit siemens
Standard Cubic Foot
The $\textit{standard cubic foot}$ (scf) is a unit representing the amount of gas (such as natural gas) contained in a volume of one cubic foot at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic foot are 60 degrees Fahrenheit and 14.7 pounds per square inch (psi) of pressure.
Standard Cubic Metre
Standard Cubic Meter
The $\textit{standard cubic metre}$ (scm) is a unit representing the amount of gas (such as natural gas) contained in a volume of one cubic metre at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic metre are 0 degrees Celsius and 101.325 kilopascals (kPa) of pressure.
Volt Ampere Hour
product of the unit for apparent by ampere and the unit hour
Volt Ampere Reactive Hour
product of the unit volt ampere reactive and the unit hour
voltů na metr
Volt je Meter
volt per metre
Volt per Meter
voltio por metro
ولت بر متر
volt par mètre
प्रति मीटर वोल्ट
volt al metro
ボルト毎メートル
volt per meter
wolt na metr
volt por metro
volți pe metru
вольт на метр
volt na meter
volt bölü metre
伏特每米
The unit $\{Volt Per Meter (V/m)}$ is a unit in the category of Electric field strength. It is also known as volts per meter, volt/meter, volt/metre, volt per metre, volts per metre. This unit is commonly used in the SI unit system. $\{Volt Per Meter}$ has a dimension of $MLT^{-3}I^{-1}$ where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Abvolt per centimetre
Abvolt per centimeter
In the electromagnetic centimeter-gram-second system of units, 'abvolt per centimeter' is the unit of electric field strength.
Statvolt per Centimetre
Statvolt per Centimeter
One statvolt per centimetre is equal in magnitude to one gauss. For example, an electric field of one statvolt/cm has the same energy density as a magnetic field of one gauss. Likewise, a plane wave propagating in a vacuum has perpendicular electric and magnetic fields such that for every gauss of magnetic field intensity there is one statvolt/cm of electric field intensity. The abvolt is another option for a unit of voltage in the cgs system.
Watt per Kilogram
SI derived unit watt divided by the SI base unit kilogram
unit of the length according to the Anglo-American and Imperial system of units divided by the power of the SI base unit second by exponent 2
Air Alarm
Air Differential Pressure Setpoint
Sets the target air differential pressure between an upstream and downstream point in a air duct or conduit
Air Temperature Integral Time Parameter
Building Air
air contained within a building
CO2 Sensor
Measures properties of CO2 in air
CO Sensor
Measures properties of CO
Chilled Water Flow Setpoint
Sets the target flow rate of chilled water
Chiller
Refrigerating machine used to transfer heat between fluids. Chillers are either direct expansion with a compressor or absorption type.
Condenser Water Flow Sensor
Measures the flow of the condenser water
Condensing Unit
An outdoor HVAC unit that typically condenses refrigerant from gas to liquid, integral to the refrigeration cycle. It comprises a condenser coil, compressor, fan, and potentially a reversing valve in heat pump applications.
Deadband Setpoint
Sets the size of a deadband
Demand Setpoint
Sets the rate required for a process
Differential Pressure Deadband Setpoint
Sets the size of a deadband of differential pressure
Differential Pressure Integral Time Parameter
Differential Pressure Proportional Band
Differential Pressure Setpoint Limit
A parameter that places a lower or upper bound on the range of permitted values of a Differential_Pressure_Setpoint.
Direction
Entering Hot Water Temperature Sensor
Measures the temperature of water enteringed to a hot water system
Entering Water Flow Sensor
Measures the rate of flow of water entering a piece of equipment or system
GrainsOfMoisture
Mass of moisture per pround of air, measured in grains of water
Hot Water System
The equipment, devices and conduits that handle the production and distribution of hot water in a building
Laboratory
facility acceptable to the local, national, or international recognized authority having jurisdiction and which provides uniform testing and examination procedures and standards for meeting design, manufacturing, and factory testing requirements.
Leaving Water Flow Setpoint
Sets the target flow rate of leaving water
Leaving Water Temperature Sensor
Measures the temperature of water leaving a piece of equipment or system
Lighting Equipment
Outdoor Area
A class of spaces that exist outside of a building
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:OutdoorSpace
PID Parameter
Particulate Matter Sensor
Detects pollutants in the ambient air
Pressure Setpoint
Sets pressure
Radiator
Heat exchangers designed to transfer thermal energy from one medium to another
Reset Setpoint
Setpoints used in reset strategies
Safety Equipment
Security Equipment
Solid
one of the three states or phases of matter characterized by stability of dimensions, relative incompressibility, and molecular motion held to limited oscillation.
Supply Air Flow Sensor
Measures the rate of flow of supply air
Supply Air Static Pressure Setpoint
Sets static pressure of supply air
Supply Air Temperature Sensor
Measures the temperature of supply air
System Status
Indicates properties of the activity of a system
Telecom Room
A class of spaces used to support telecommuncations and IT equipment
Temperature Alarm
An alarm that indicates the off-normal conditions associated with temperature.
Usage Sensor
Measures the amount of some substance that is consumed or used, over some period of time
Variable Air Volume Box
A device that regulates the volume and temperature of air delivered to a zone by opening or closing a damper
Vertical Space
A class of spaces used to connect multiple floors or levels..
Brick location classes are being phased out in favor of RealEstateCore classes. There is not yet a replacement in REC for Vertical_Space
Water Differential Temperature Sensor
Measures the difference in water temperature between an upstream and downstream point in a pipe or conduit
Water Loop
A collection of equipment that transport and regulate water among each other
ambientTemperatureOfMeasurement
Area
Deprecation Notice
Has location
Subject is physically located in the location given by the object
Has point
The subject has a source of telemetry identified by the object. In some systems the source of telemetry may be represented as a digital/analog input/output point
Has Quantity
meters
Indicates the entity whose consumption/production of some substance is measured by this meter.
A reference to the BACnet object represented by this entity.
A reference to an entity in an IFC project which may contain additional metadata about this entity.
Reference to an IFC Project object, containing the project ID
The global ID of the entity in the IFC project
The ambient temperature at which the power input was measured
Aid
Array
Bulb
Circuit
Collector
Color
Computer
Conductivity
Cooled
Core
Correlated
Count
Cycle
Deck
Deionised
Delay
Derivative
Direct
Drive
Duration
Ethernet
Food
Freeze
Fume
Ground
Handler
Hood
Inside
Intake
Lag
Main
Maintenance
Makeup
Mechanical
Modulating
Operating
Override
PM1
PM10
PM2.5
Port
Pre
Reactive
Regulator
Stage
TVOC
Torque
Tower
Wall
Wet
Wheel
Wind
coordinates
documentation
hasPart
isFedBy
isPartOf
تسارع زاوي
Úhlové zrychlení
Winkelbeschleunigung
angular acceleration
aceleración angular
شتاب زاویه‌ای
accélération angulaire
कोणीय त्वरण
accelerazione angolare
角加速度
Pecutan bersudut
Przyspieszenie kątowe
aceleração angular
Accelerație unghiulară
Угловое ускорение
Açısal ivme
Angular acceleration is the rate of change of angular velocity over time. Measurement of the change made in the rate of change of an angle that a spinning object undergoes per unit time. It is a vector quantity. Also called Rotational acceleration. In SI units, it is measured in radians per second squared ($rad/s^2$), and is usually denoted by the Greek letter alpha.
Applicable units are those of quantitykind:AngularAcceleration
Vzdálenost
Entfernung
distance
distancia
مسافت
distanza
Jarak
distância
uzaklık
距离
"Distance" is a numerical description of how far apart objects are.
Extent of Reaction
In physical chemistry, the "Extent of Reaction" is a quantity that measures the extent in which the reaction proceeds.
$dn_B = \nu_B d\xi$, where $n_B$ is the amount of substance $B$ and $\nu_B$ is the stoichiometric number of substance $B$.
Applicable units are those of quantitykind:ExtentOfReaction
Flux
Flux describes any effect that appears to pass or travel (whether it actually moves or not) through a surface or substance. [Wikipedia]
Applicable units are those of quantitykind:Flux
شدة الضوء
Осветеност
Intenzita osvětlení
Beleuchtungsstärke
illuminance
luminosidad
شدت روشنایی
éclairement lumineux
הארה (שטף ליחידת שטח)
प्रदीपन
megvilágítás
illuminamento
照度
Pencahayaan
natężenie oświetlenia
iluminamento
iluminare
Освещённость
osvetljenost
aydınlanma şiddeti
Illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of the intensity of the incident light, wavelength-weighted by the luminosity function to correlate with human brightness perception.
$E_v = \frac{d\Phi}{dA}$, where $d\Phi$ is the luminous flux incident on an element of the surface with area $dA$.
éclairement
Incidence
In epidemiology, incidence is a measure of the probability of occurrence of a given medical condition in a population within a specified period of time.
Information flow rate
Applicable units are those of quantitykind:InformationFlowRate
Inverse Energy
Applicable units are those of quantitykind:InverseEnergy
Kerma
"Kerma" is the sum of the initial kinetic energies of all the charged particles liberated by uncharged ionizing radiation (i.e., indirectly ionizing radiation such as photons and neutrons) in a sample of matter, divided by the mass of the sample.
For indirectly ionizing (uncharged) particles, $K= \frac{dE_{tr}}{dm}$, where $dE_{tr}$ is the mean sum of the initial kinetic energies of all the charged ionizing particles liberated by uncharged ionizing particles in an element of matter, and $dm$ is the mass of that element.
Applicable units are those of quantitykind:Kerma
Length Mass
Applicable units are those of quantitykind:LengthMass
معدل التمدد الحراري الخطي
linearer Ausdehnungskoeffizient
linear expansion coefficient
coeficiente de expansión térmica lineal
coefficient de dilatation linéique
coefficiente di dilatazione lineare
線熱膨張係数
współczynnik liniowej rozszerzalności cieplnej
coeficiente de dilatação térmica linear
线性热膨胀系数
$\alpha_l = \frac{1}{l} \; \frac{dl}{dT}$, where $l$ is $length$ and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:LinearExpansionCoefficient
Magnetic Area Moment
"Magnetic Area Moment", for a magnetic dipole, is a vector quantity equal to the product of the current, the loop area, and the unit vector normal to the loop plane, the direction of which corresponds to the loop orientation. "Magnetic Area Moment" is also referred to as "Magnetic Moment".
$m = I e_n A$, where $I$ is electric current in a small closed loop, $e_n$ is a unit vector perpendicular to the loop, and $A$ is the area of the loop. The magnetic moment of a substance within a domain is the vector sum of the magnetic moments of all entities included in the domain.
Applicable units are those of quantitykind:MagneticAreaMoment
عزم مغناطيسي
Magnetický dipól
magnetisches Dipolmoment
magnetic moment
momento de dipolo magnético
دوقطبی مغناطیسی
moment magnétique
चुम्बकीय द्विध्रुव
momento di dipolo magnetico
磁気双極子
Momen magnetik
dipol magnetyczny
Магнитный момент
Manyetik moment
磁偶极
"Magnetic Moment", for a magnetic dipole, is a vector quantity equal to the product of the current, the loop area, and the unit vector normal to the loop plane, the direction of which corresponds to the loop orientation. "Magnetic Moment" is also referred to as "Magnetic Area Moment", and is not to be confused with Magnetic Dipole Moment.
Applicable units are those of quantitykind:MagneticMoment
giromagnetic moment
moment giromagnétique
momen giromagnetik
Magnetic Quantum Number
The "Magnetic Quantum Number" describes the specific orbital (or "cloud") within that subshell, and yields the projection of the orbital angular momentum along a specified axis.
Applicable units are those of quantitykind:MagneticQuantumNumber
Mass Attenuation Coefficient
"Mass Attenuation Coefficient" is a measurement of how strongly a chemical species or substance absorbs or scatters light at a given wavelength, per unit mass.
$\mu_m = \frac{\mu}{\rho}$, where $\mu$ is the linear attenuation coefficient and $\rho$ is the mass density of the medium.
Applicable units are those of quantitykind:MassAttenuationCoefficient
Massic Activity
"Massic Activity" is the activity divided by the total mass of the sample.
Mean Mass Range
"Mean Mass Range" is the mean linear range multiplied by the mass density of the material.
$R_\rho = R\rho$, where $R$ is the mean linear range and $\rho$ is the mass density of the sample.
Applicable units are those of quantitykind:MeanMassRange
Molar Refractivity
A quantity kind that is a measure of the total polarizability of a mole of substance that depends on the temperature, the index of refraction and the pressure.
Applicable units are those of quantitykind:MolarRefractivity
حجم مولي
molární objem
Molvolumen
molar volume
volumen molar
حجم مولی
volume molaire
volume molare
モル体積
Isipadu molar
volume molar
volum molar
Молярный объём
molski volumen
molar hacim
摩尔体积
The molar volume, symbol $V_m$, is the volume occupied by one mole of a substance (chemical element or chemical compound) at a given temperature and pressure. It is equal to the molar mass ($M$) divided by the mass density ($\rho$). It has the SI unit cubic metres per mole ($m^{1}/mol$). For ideal gases, the molar volume is given by the ideal gas equation: this is a good approximation for many common gases at standard temperature and pressure. For crystalline solids, the molar volume can be measured by X-ray crystallography.
$V_m = \frac{V}{n}$, where $V$ is volume and $n$ is amount of substance.
Applicable units are those of quantitykind:MolarVolume
molares Volumen
stoffmengenbezogenes Volumen
Permeability
Applicable units are those of quantitykind:Permeability
Principal Quantum Number
Applicable units are those of quantitykind:PrincipalQuantumNumber
Second Axial Moment of Area
The moment of inertia, also called mass moment of inertia, rotational inertia, polar moment of inertia of mass, or the angular mass is a property of a distribution of mass in space that measures its resistance to rotational acceleration about an axis.
$I_a = \int r^2_Q dA$, where $r_Q$ is the radial distance from a $Q-axis$ and $A$ is area.
Applicable units are those of quantitykind:SecondAxialMomentOfArea
Flächenträgheitsmoment
second moment of area
segundo momento de érea
گشتاور دوم سطح
moment quadratique
क्षेत्रफल का द्वितीय आघूर्ण
secondo momento di area
断面二次モーメント
Geometryczny moment bezwładności
Segundo momento de área
截面二次轴矩
The second moment of area is a property of a physical object that can be used to predict its resistance to bending and deflection. The deflection of an object under load depends not only on the load, but also on the geometry of the object's cross-section.
Applicable units are those of quantitykind:SecondMomentOfArea
momento de inércia de área
Second Polar Moment of Area
$I_p = \int r^2_Q dA$, where $r_Q$ is the radial distance from a $Q-axis$ and $A$ is area.
Applicable units are those of quantitykind:SecondPolarMomentOfArea
مقاومة حرارية
opór cieplny
thermischer Widerstand
thermal resistance
resistencia térmica
résistance thermique
resistenza termica
熱抵抗
resistência térmica
热阻
$\textit{Thermal Resistance}$ is a heat property and a measure of a temperature difference by which an object or material resists a heat flow (heat per time unit or thermal resistance). Thermal resistance is the reciprocal thermal conductance. the thermodynamic temperature difference divided by heat flow rate. Thermal resistance $R$ has the units $\frac{m^2 \cdot K}{W}$.
Applicable units are those of quantitykind:ThermalResistance
Wärmewiderstand
Thrust
Thrust is a reaction force described quantitatively by Newton's Second and Third Laws. When a system expels or accelerates mass in one direction the accelerated mass will cause a proportional but opposite force on that system. The pushing or pulling force developed by an aircraft engine or a rocket engine. The force exerted in any direction by a fluid jet or by a powered screw, as, the thrust of an antitorque rotor. Specifically, in rocketry, $ F\,= m\cdot v$ where m is propellant mass flow and v is exhaust velocity relative to the vehicle. Also called momentum thrust.
Thrust is a reaction force described quantitatively by Newton's Second and Third Laws. When a system expels or accelerates mass in one direction the accelerated mass will cause a proportional but opposite force on that system.
Time Temperature
Applicable units are those of quantitykind:TimeTemperature
Torque per Angle
Federkonstante Drehfeder
torsional spring constant
ratio between the turning moment for elastic deformation of a torsion spring and the related angle of rotation
A torsional spring constant is a measure of the stiffness of a torsional spring, which is a type of spring that experiences twisting or torque rather than compression or extension. It is typically measured in newton-meters per radian (N·m/rad) and is used to calculate the amount of torque required to twist a spring a certain amount. It is related to the spring's geometry, material properties, and manufacturing process.
Quotient Drehmoment zur elastischen Verformung einer Drehfeder durch den zugehörigen Drehwinkel
Applicable units are those of quantitykind:TorsionalSpringConstant
Volumetric Heat Capacity
$\textit{Volumetric Heat Capacity (VHC)}$, also termed $\textit{volume-specific heat capacity}$, describes the ability of a given volume of a substance to store internal energy while undergoing a given temperature change, but without undergoing a phase transition. It is different from specific heat capacity in that the VHC is a $\textit{per unit volume}$ measure of the relationship between thermal energy and temperature of a material, while the specific heat is a $\textit{per unit mass}$ measure (or occasionally per molar quantity of the material).
Applicable units are those of quantitykind:VolumetricHeatCapacity
Cubic Angstrom
A unit that is a non-SI unit, specifically a CGS unit, of polarizability known informally as polarizability volume. The SI defined units for polarizability are C*m^2/V and can be converted to $Angstr\ddot{o}m$^3 by multiplying the SI value by 4 times pi times the vacuum permittivity and then converting the resulting m^3 to $Angstr\ddot{o}m$^3 through the SI base 10 conversion (multiplying by 10^-30).
Abampere
The $\textit{Abampere (aA)}$, also called the $biot$ after Jean-Baptiste Biot, is the basic electromagnetic unit of electric current in the emu-cgs system of units (electromagnetic cgs). One $abampere$ is equal to ten amperes in the SI system of units. An $abampere$ is the constant current that produces, when maintained in two parallel conductors of negligible circular section and of infinite length placed 1 centimetre apart, a force of 2 dynes per centimetre between the two conductors.
The Abampere (aA), also called the biot after Jean-Baptiste Biot, is the basic electromagnetic unit of electric current in the emu-cgs system of units (electromagnetic cgs). One abampere is equal to ten amperes in the SI system of units. An abampere is the constant current that produces, when maintained in two parallel conductors of negligible circular section and of infinite length placed 1 centimetre apart, a force of 2 dynes per centimetre between the two conductors.
Barrel (US)
unit of the volume for crude oil according to the Anglo-American system of units
Beaufort
unit for classification of winds according to their speed, developed by Sir Francis Beaufort as measure for the over-all behaviour of a ship's sail at different wind speeds
British Thermal Unit (thermochemical) per Hour
bushel (UK)
A bushel is an imperial unit of dry volume, equivalent in each of these systems to 4 pecks or 8 gallons. It is used for volumes of dry commodities (not liquids), most often in agriculture. It is abbreviated as bsh. or bu. In modern usage, the dry volume is usually only nominal, with bushels referring to standard weights instead.
cubic centimetre
cubic centimeter
The CGS unit of volume, equal to 10-6 cubic meter, 1 milliliter, or about 0.061 023 7 cubic inch
Cubic Centimetres per Gram
Cubic Centimeters per Gram
Cubic Centimeter per Gram is a unit in the category of Specific Volume.
CentiMole
Decalitre
Cubic Decametre
Cubic Decameter
1 000-fold of the power of the SI base unit metre by exponent 3
unit of sound pressure level with frequency weighting A
antenna gain of a transmitted or received signal
unit of sound pressure level with frequency weighting Z (ZERO or linear weighting)
Board Foot
The board-foot is a specialized unit of measure for the volume of lumber in the United States and Canada. It is the volume of a one-foot length of a board one foot wide and one inch thick. Board-foot can be abbreviated FBM (for 'foot, board measure'), BDFT, or BF. Thousand board-feet can be abbreviated as MFBM, MBFT or MBF.
Foot Candle
"Foot Candle" is a unit for 'Luminous Flux Per Area' expressed as $fc$.
Cubic Foot per Minute Square Foot
unit of the volume flow rate according to the Anglio-American and imperial system of units cubic foot per minute related to the transfer area according to the Anglian American and Imperial system of units square foot
Femtolitre
0.000000000000001-fold of the unit litre
FemtoMole
Galileo
The $\textit{Galileo}$ is the unit of acceleration of free fall used extensively in the science of gravimetry. The Galileo is defined as $1 \textit{centimeter per square second}$ ($1 cm/s^2$). Unfortunately, the Galileo is often denoted with the symbol Gal, not to be confused with the Gallon that also uses the same symbol.
CGS unit of acceleration called gal with the definition: 1 Gal = 1 cm/s
SI derived unit gray divided by the unit hour
SI derived unit gray divided by the unit minute
Gray per Second
"Gray per Second" is a unit for 'Absorbed Dose Rate' expressed as $Gy/s$.
Gross Tonnage
The formula for calculating GT is given by ${ GT=V\times (0.2+0.02\times \log _{10}(V))}$
${ GT=V\times (0.2+0.02\times \log _{10}(V))}$ where V is measured in cubic meters.
Gross tonnage (GT, G.T. or gt) is a nonlinear measure of a ship's overall internal volume. Gross tonnage is different from gross register tonnage. Gross tonnage is used to determine things such as a ship's manning regulations, safety rules, registration fees, and port dues, whereas the older gross register tonnage is a measure of the volume of only certain enclosed spaces.
Hertz Metre
Hertz Meter
$\textit{Hertz Metre}$ is the product of the SI derived unit hertz and the SI base unit metre.
product of the SI derived unit hertz and the SI base unit metre
Hectolitre
Cubic Inch
The cubic inch is a unit of measurement for volume in the Imperial units and United States customary units systems. It is the volume of a cube with each of its three sides being one inch long. The cubic inch and the cubic foot are still used as units of volume in the United States, although the common SI units of volume, the liter, milliliter, and cubic meter, are continually replacing them, especially in manufacturing and high technology. One cubic foot is equal to exactly 1728 cubic inches.
جول ثانية
joule sekunda
Joulesekunde
joule second
julio segundo
ژول ثانیه
joule-seconde
जूल सैकण्ड
joule per secondo
ジュール秒
joule saat
dżulosekunda
joule-segundo
joule-secundă
джоуль-секунда
joule saniye
焦耳秒
The $\textit{joule-second}$ is a unit equal to a $joule$ multiplied by a second, used to measure action or angular momentum. The joule-second is the unit used for Planck's constant.
KiloCoulomb
Kilocalorie per Mole
The kilocalorie per mole is a derived unit of energy per Avogadro's number of particles. It is the quotient of a kilocalorie (1000 thermochemical gram calories) and a mole, mainly used in the United States. In SI units, it is equal to $4.184 kJ/mol$, or $6.9477 \times 10 J per molecule$. At room temperature it is equal to 1.688 . Physical quantities measured in $kcal\cdot mol$ are usually thermodynamical quantities; mostly free energies such as: Heat of vaporization Heat of fusion .
Kilocalorie (international Table)
Kilogram Square Centimetre
Kilogram Square Centimeter
product of the SI base unit kilogram and the 0 0001fold of the power of the SI base unit metre with the exponent 2
كيلوغرام متر مربع
kilogram čtvereční metr
Kilogramm mal Quadratmeter
kilogram square metre
Kilogram Square Meter
kilogramo metro cuadrado
نیوتون متر مربع
kilogramme-mètre carré
किलोग्राम वर्ग मीटर
chilogrammo metro quadrato
キログラム平方メートル
kilogram meter persegi
quilograma-metro quadrado
kilogram-metru pătrat
килограмм-квадратный метр
kilogram metrekare
千克平方米
"Kilogram Square Meter" is a unit for 'Moment Of Inertia' expressed as $kg-m^2$.
Kilogram Square Millimetre
Kilogram Square Millimeter
product of the SI base kilogram and the 0.001-fold of the power of the SI base metre with the exponent 2
Kilojoule per Mole
1 000-fold of the SI derived unit joule divided by the SI base unit mol
1,000-fold of the SI derived unit watt divided by the product of the power of the SI base unit metre by exponent 2 and the SI base unit kelvin
[CGS] unit of the areal-related energy transmission (as a measure of the incendent quantity of heat of solar radiation on the earth's surface)
Pound Mass (avoirdupois) Square Foot
product of the unit pound according to the avoirdupois system of units and the power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Mass (avoirdupois) Square Inch
product of the unit pound according to the avoirdupois system of units and the power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
Pound (avoirdupois) per Square Inch
unit of the areal-related mass as avoirdupois pound according to the avoirdupois system of units related to the area square inch according to the Anglo-American and Imperial system of units
Cubic Metre per Second
Cubic Meter per Second
A cubic metre per second ($m^{3}s^{-1}, m^{3}/s$), cumecs or cubic meter per second in American English) is a derived SI unit of flow rate equal to that of a stere or cube with sides of one metre ( u0303 39.37 in) in length exchanged or moving each second. It is popularly used for water flow, especially in rivers and streams, and fractions for HVAC values measuring air flow.
Cubic Mile
A cubic mile is an imperial / U.S. customary unit of volume, used in the United States, Canada, and the United Kingdom. It is defined as the volume of a cube with sides of 1 mile in length.
MegaCoulomb
Megagram per Hectare
1 000-fold of the SI base unit kilogram divided by the 10,000-fold of the power of the SI base unit metre with the exponent 2
Megahertz Metre
Megahertz Meter
product of the 1,000,000-fold of the SI derived unit hertz and the 1 000-fold of the SI base unit metre
Megalitre
MicroCoulomb
0.000001-fold of the SI derived unit gray divided by the unit hour
0.000001-fold of the SI derived unit gray divided by the unit minute
0.000001-fold of the SI derived unit gray divided by the SI base unit second
Microhenry
The SI derived unit for inductance is the henry. 1 henry is equal to 1000000 microhenry.
Cubic micrometres (microns)
Microsiemens
0.000001-fold of the SI derived unit siemens
0.000001-fold of the SI derived unit sievert divided by the unit minute
0.000001-fold of the SI derived unit sievert devided by the SI base unit second
MilliBecquerel
Milligal
0.001-fold of the unit of acceleration called gal according to the CGS system of units
0.001-fold of the SI derived unit gray divided by the unit hour
0.001-fold of the SI derived unit gray divided by the unit minute
0.001-fold of the SI derived unit gray divided by the SI base unit second
Millilitre per Gram
Milliliter per Gram
Milliliter Per Gram is a unit in the category of Specific Volume. It is also known as milliliters per gram, millilitre per gram, millilitres per gram, milliliter/gram, millilitre/gram.
Cubic Millimetre
Cubic Millimeter
A metric measure of volume or capacity equal to a cube 1 millimeter on each edge
Milliohm
Millirads per hour
One thousandth part of an absorbed ionizing radiation dose equal to 100 ergs per gram of irradiated material received per hour.
0.001-fold of the SI derived unit sievert divided by the unit hour
0.001-fold of the SI derived unit sievert divided by the unit minute
0.001-fold of the SI derived unit sievert devided by the SI base unit second
Milliwatt per Milligram
SI derived unit milliwatt divided by the SI derived unit milligram
Net tonnage
Net tonnage is used in the United States to determine eligibility for registering boats with the federal government. It is a nonlinear unit derived from the total volume of a ship's cargo space as well as some dimensionless factors. Net tonnage is not a measure of the weight of the ship or its cargo, and should not be confused with terms such as deadweight tonnage or displacement. Net tonnage is also used to determine the amount of money that can be charged to a ship for using a port's facilities.
0.000000001-fold of the SI derived unit gray divided by the unit hour
0.000000001-fold of the SI derived unit gray divided by the unit minute
0.000000001-fold of the SI derived unit gray divided by the SI base unit second
Nanohenry
0.000000001-fold of the SI derived unit henry
0.000000001-fold of the SI derived unit sievert divided by the unit hour
0.000000001-fold of the SI derived unit sievert divided by the unit minute
0.000000001-fold of the SI derived unit sievert devided by the SI base unit second
US Liquid Ounce
"US Liquid Ounce" is a unit for 'Liquid Volume' expressed as $oz$.
reciprocal of the 1,000,000-fold of the derived unit pascal
Reciprocal Pascal
reciprocal of the SI derived unit pascal
Phot
A phot (ph) is a photometric unit of illuminance, or luminous flux through an area. It is not an SI unit, but rather is associated with the older centimetre gram second system of units. Metric dimensions: $illuminance = luminous intensity \times solid angle / length$.
US Liquid Pint
"US Liquid Pint" is a unit for 'Liquid Volume' expressed as $pt$.
US Peck
A peck is an imperial and U.S. customary unit of dry volume, equivalent to 2 gallons or 8 dry quarts or 16 dry pints. Two pecks make a kenning (obsolete), and four pecks make a bushel. In Scotland, the peck was used as a dry measure until the introduction of imperial units as a result of the Weights and Measures Act of 1824. The peck was equal to about 9 litres (in the case of certain crops, such as wheat, peas, beans and meal) and about 13 litres (in the case of barley, oats and malt). A firlot was equal to 4 pecks and the peck was equal to 4 lippies or forpets.
Planck Volume
Roentgen
Not to be confused with roentgen equivalent man or roentgen equivalent physical. The roentgen (symbol R) is an obsolete unit of measurement for the kerma of X-rays and gamma rays up to 3 MeV.
unit for the equivalent tin rate relating to DIN 1301-3:1979: 1 rem/s = 0.01 J/(kg·s) = 1 Sv/s
Stokes
$\textit{Stokes (St)}$ is a unit in the category of Kinematic viscosity. This unit is commonly used in the cgs unit system. Stokes (St) has a dimension of $L^2T^{-1}$ where $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit $m^2/s$ by multiplying its value by a factor of 0.0001.
Stere
The stere is a unit of volume in the original metric system equal to one cubic metre. The stere is typically used for measuring large quantities of firewood or other cut wood, while the cubic meter is used for uncut wood. It is not part of the modern metric system (SI). In Dutch there's also a kuub, short for kubieke meter which is similar but different.
SI derived unit sievert divided by the unit hour
SI derived unit sievert divided by the unit minute
SI derived unit sievert devided by the SI base unit second
Tablespoon
In the US and parts of Canada, a tablespoon is the largest type of spoon used for eating from a bowl. In the UK and most Commonwealth countries, a tablespoon is a type of large spoon usually used for serving. In countries where a tablespoon is a serving spoon, the nearest equivalent to the US tablespoon is either the dessert spoon or the soup spoon. A tablespoonful, nominally the capacity of one tablespoon, is commonly used as a measure of volume in cooking. It is abbreviated as T, tb, tbs, tbsp, tblsp, or tblspn. The capacity of ordinary tablespoons is not regulated by law and is subject to considerable variation. In most countries one level tablespoon is approximately 15 mL; in Australia it is 20 mL.
tonne per hectare
A measure of density equivalent to 1000kg per hectare or one Megagram per hectare, typically used to express a volume of biomass or crop yield.
metric tonne per hectare
Ton (UK Shipping)
traditional unit for volume of cargo, especially in shipping
Ton (US Shipping)
Teaspoon
A teaspoon is a unit of volume. In the United States one teaspoon as a unit of culinary measure is $1/3$ tablespoon , that is, $\approx 4.93 mL$; it is exactly $1/6 U.S. fl. oz$, $1/48 \; cup$, and $1/768 \; U.S. liquid gallon$ (see United States customary units for relative volumes of these other measures) and approximately $1/3 cubic inch$. For nutritional labeling on food packages in the U.S., the teaspoon is defined as precisely $5 mL$.
Watt per Gram
SI derived unit watt divided by the SI derived unit gram
Cubic Yard
A cubic yard is an Imperial / U.S. customary unit of volume, used in the United States, Canada, and the UK. It is defined as the volume of a cube with sides of 1 yard in length.
Air Differential Pressure Sensor
Measures the difference in pressure between two regions of air
Air Static Pressure Sensor
Measures the pressure exerted by the air in a system, not influenced by its motion.
Chilled Water Flow Sensor
Measures the rate of flow in a chilled water circuit
Chilled Water Temperature Setpoint
Sets the temperature of chilled water
Class
Condenser Water Temperature Sensor
Measures the temperature of condenser water
Cooling Discharge Air Flow Setpoint
Sets discharge air flow for cooling
Cooling Zone Air Temperature Setpoint
The cooling setpoint for a specific zone in a building.
Disable Command
Commands that disable functionality
Discharge Water Temperature Sensor
Electric Energy
A form of energy resulting from the flow of electrical charge
Entering Condenser Water
In a condenser water loop, this is water being brought away from the condenser side of a heat-rejection device (e.g. chiller). It is the 'warm' side.
Entering Water Temperature Setpoint
Sets temperature of entering water
Filter
Device to remove gases from a mixture of gases or to remove solid material from a fluid
Heating Discharge Air Flow Setpoint
Sets discharge air flow for heating
Heating Zone Air Temperature Setpoint
The heating setpoint for a specific zone in a building.
Hot Water Flow Sensor
Measures the rate of flow in a hot water circuit
Leaving Condenser Water
In a condenser water loop, this is water being brought to the condenser side of a heat-rejection device (e.g. chiller). It is the 'cold' side.
Leaving Hot Water Temperature Sensor
Measures the temperature of water supplied by a hot water system
Leaving Water Flow Sensor
Measures the rate of flow of water that is leaving a piece of equipment or system
Level
Amount of substance in a container; typically measured in height
Max Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Air_Flow_Setpoint.
Min Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Air_Flow_Setpoint.
Natural Gas
Fossil fuel energy source consisting largely of methane and other hydrocarbons
Outside Air Temperature Setpoint
Sets temperature of outside air
A main disconnect or service disconnect feeds power to a switchgear, which then distributes power to the rest of the building through smaller amperage-rated disconnects.
Target Zone Air Temperature Setpoint
Variable Frequency Drive
Water Alarm
Alarm that indicates an undesirable event with a pipe, container, or equipment carrying water e.g. water leak
Water Storage Tank
A specialized type of tank intended for the storage of water for extended periods.
Zone Air Temperature Setpoint
Sets temperature of zone air
The class 'Zone_Air_Temperature_Setpoint' is deprecated in favor of more explicit class names to distinguish target and cooling/heating setpoints.
Feeds
The subject is upstream of the object in the context of some sequential process; some media is passed between them
Is part of
The parent class of all external reference types
A reference to a stream of timeseries data in a database. Contains the data for this entity
The identifier for the timeseries data corresponding to this point
Refers to a database storing the timeseries data for the related point. Properties on this class are *to be determined*; feel free to add arbitrary properties onto Database instances for your particular deployment
A value of 0 indicates the local network
A string of length 0 indicates a broadcast
Activity Concentration
The "Activity Concentration", also known as volume activity, and activity density, is .
$c_A = \frac{A}{V}$, where $A$ is the activity of a sample and $V$ is its volume.
Applicable units are those of quantitykind:ActivityConcentration
Correlated Colour Temperature
Correlated Color Temperature
Correlated color temperature (CCT) is a measure of light source color appearance defined by the proximity of the light source's chromaticity coordinates to the blackbody locus, as a single number rather than the two required to specify a chromaticity.
Applicable units are those of quantitykind:CorrelatedColorTemperature
Current Linkage
"Current Linkage" is the net electric current through a surface delimited by a closed loop.
Applicable units are those of quantitykind:CurrentLinkage
In mathematics "Curvature" is the amount by which a geometric object deviates from being flat, or straight in the case of a line, but this is defined in different ways depending on the context.
$\kappa = \frac{1}{\rho}$, where $\rho$ is the radius of the curvature.
Applicable units are those of quantitykind:CurvatureFromRadius
Electric Current per Temperature
"Electric Current per Unit Temperature" is used to express how a current is subject to temperature. Originally used in Wien's Law to describe phenomena related to filaments. One use today is to express how a current generator derates with temperature.
"Electric Current per Temperature" is used to express how a current is subject to temperature. Originally used in Wien's Law to describe phenomena related to filaments. One use today is to express how a current generator derates with temperature.
Applicable units are those of quantitykind:ElectricCurrentPerTemperature
إزاحة كهربائية
Elektrická indukce
elektrische Flussdichte
electric flux density
Densidad de flujo eléctrico
چگالی شار الکتریکی
Induction électrique
spostamento elettrico
電束密度
Ketumpatan fluks elektrik
Indukcja elektryczna
campo de deslocamento elétrico
Inducție electrică
Электрическая индукция
elektrik akı yoğunluğu
電位移
$\textit{Electric Flux Density}$, also referred to as $\textit{Electric Displacement}$, is related to electric charge density by the following equation: $\text{div} \; D = \rho$, where $\text{div}$ denotes the divergence.
$\mathbf{D} = \epsilon_0 E + P$, where $\epsilon_0$ is the electric constant, $\mathbf{E} $ is electric field strength, and $P$ is electric polarization.
elektrische Induktion
elektrische Verschiebung
displacement
densité de flux électrique
induzione elettrica
anjakan
yer değiştirme
$\textit{Permeability}$ is the degree of magnetization of a material that responds linearly to an applied magnetic field. In general permeability is a tensor-valued quantity. The definition given applies to an isotropic medium. For an anisotropic medium permeability is a second order tensor. In electromagnetism, permeability is the measure of the ability of a material to support the formation of a magnetic field within itself. In other words, it is the degree of magnetization that a material obtains in response to an applied magnetic field. Magnetic permeability is typically represented by the Greek letter $\mu$. The term was coined in September, 1885 by Oliver Heaviside. The reciprocal of magnetic permeability is $\textit{Magnetic Reluctivity}$.
$\mu = \frac{B}{H}$, where $B$ is magnetic flux density, and $H$ is magnetic field strength.
Applicable units are those of quantitykind:ElectromagneticPermeability
سعة حرارية
tepelná kapacita
Wärmekapazität
heat capacity
capacidad calorífica
ظرفیت گرمایی
capacité thermique
ऊष्मा धारिता
capacità termica
熱容量
muatan haba
pojemność cieplna
capacidade térmica
capacitate termică
теплоёмкость
toplotna kapaciteta
isı kapasitesi
热容
"Heat Capacity" (usually denoted by a capital $C$, often with subscripts), or thermal capacity, is the measurable physical quantity that characterizes the amount of heat required to change a substance's temperature by a given amount. In the International System of Units (SI), heat capacity is expressed in units of joule(s) (J) per kelvin (K).
$C = dQ/dT$, where $Q$ is amount of heat and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:HeatCapacity
Inverse Pressure
Applicable units are those of quantitykind:InversePressure
معامل الانضغاط عند ثبوت درجة الحرارة
objemová stlačitelnost
isotherme Kompressibilität
isothermal compressibility
compresibilidad isotérmica
ضریب تراکم‌پذیری همدما
compressibilité isotherme
comprimibilità isotermica
等温圧縮率
Ketermampatan isotermik
ściśliwość izotermiczna
compressibilidade isotérmica
изотермический коэффициент сжимаемости
Izotermna stisljivost
等温压缩率
The isothermal compressibility defines the rate of change of system volume with pressure.
$\varkappa_T = \frac{1}{V}\left (\frac{\partial V}{\partial p} \right )_T$, where $V$ is volume, $p$ is $pressure$, and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:IsothermalCompressibility
Linear Absorption Coefficient
The Linear Absorption Coefficient is a quantity that characterizes how easily a material or medium can be penetrated by a beam of light, sound, particles, or other energy or matter.
$\alpha(\lambda) = \frac{1}{\Phi_\lambda(\lambda)}\frac{d\Phi_\lambda(\lambda)}{dl}$, where $\frac{d\Phi}{\Phi}$ is the relative decrease, caused by absorption, in the spectral radiant flux $\Phi$ of a collimated beam of electromagnetic radiation corresponding to the wavelength $\lambda$ during traversal of an infinitesimal layer of a medium and $dl$ is the length traversed.
Applicable units are those of quantitykind:LinearAbsorptionCoefficient
Linear Attenuation Coefficient
"Linear Attenuation Coefficient", also called the attenuation coefficient, narrow beam attenuation coefficient, or absorption coefficient, is a quantity that characterizes how easily a material or medium can be penetrated by a beam of light, sound, particles, or other energy or matter.
$\mu = -\frac{1}{J}\frac{dJ}{dx}$, where $J$ is the magnitude of the current rate of a beam of particles parallel to the $x-direction$. Or: $\mu(\lambda) = \frac{1}{\Phi_\lambda(\lambda)}\frac{d\Phi_\lambda(\lambda)}{dl}$, where $\frac{d\Phi}{\Phi}$ is the relative decrease in the spectral radiant flux $\Phi$ of a collimated beam of electromagnetic radiation corresponding to the wavelength $\lambda$ during traversal of an infinitesimal layer of a medium and $dl$ is the length traversed.
Applicable units are those of quantitykind:LinearAttenuationCoefficient
Linear Ionization
"Linear Ionization" is a description of how the ionization of an atom or molecule takes place. For example, an ion with a +2 charge can be created only from an ion with a +1 charge or a +3 charge. That is, the numerical charge of an atom or molecule must change sequentially, always moving from one number to an adjacent, or sequential, number. Using sequential ionization definition.
$N_{il} = \frac{1}{e}\frac{dQ}{dl}$, where $e$ is the elementary charge and $dQ$ is the average total charge of all positive ions produced over an infinitesimal element of the path with length $dl$ by an ionizing charged particle.
Applicable units are those of quantitykind:LinearIonization
Linear Momentum
Linear momentum is the quantity obtained by multiplying the mass of a body by its linear velocity. The momentum of a continuous medium is given by the integral of the velocity over the mass of the medium or by the product of the total mass of the medium and the velocity of the center of gravity of the medium.The SI unit for linear momentum is meter-kilogram per second ($m-kg/s$).
Applicable units are those of quantitykind:LinearMomentum
Luminous Flux per Area
In photometry, illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception. Similarly, luminous emittance is the luminous flux per unit area emitted from a surface. In SI derived units these are measured in $lux (lx)$ or $lumens per square metre$ ($cd \cdot m^{-2}$). In the CGS system, the unit of illuminance is the $phot$, which is equal to $10,000 lux$. The $foot-candle$ is a non-metric unit of illuminance that is used in photography.
Magnetic Field
The Magnetic Field, denoted $B$, is a fundamental field in electrodynamics which characterizes the magnetic force exerted by electric currents. It is closely related to the auxillary magnetic field H (see quantitykind:AuxillaryMagneticField).
Applicable units are those of quantitykind:MagneticField
Massieu Function
The Massieu function, $\Psi$, is defined as: $\Psi = \Psi (X_1, \dots , X_i, Y_{i+1}, \dots , Y_r )$, where for every system with degree of freedom $r$ one may choose $r$ variables, e.g. , to define a coordinate system, where $X$ and $Y$ are extensive and intensive variables, respectively, and where at least one extensive variable must be within this set in order to define the size of the system. The $(r + 1)^{th}$ variable,$\Psi$ , is then called the Massieu function.
$J = -A/T$, where $A$ is Helmholtz energy and $T$ is thermodynamic temperature.
Molality of Solute
The "Molality of Solute" of a solution is defined as the amount of substance of solute divided by the mass in kg of the solvent.
$b_B = \frac{n_B}{m_a}$, where $n_B$ is the amount of substance and $m_A$ is the mass.
Applicable units are those of quantitykind:MolalityOfSolute
Molar Energy
"Molar Energy" is the total energy contained by a thermodynamic system. The unit is $$J/mol$$, also expressed as $$joule/mole$$, or $$joules per mole$$. This unit is commonly used in the SI unit system. The quantity has the dimension of $$M \cdot L^2 \cdot T^{-2} \cdot N^{-1}$$ where $$M$$ is mass, $$L$$ is length, $$T$$ is time, and $$N$$ is amount of substance.
$U_m = \frac{U}{n}$, where $U$ is internal energy and $n$ is amount of substance.
زخم الحركة
hybnost
Impuls
momentum
cantidad de movimiento
تکانه
quantité de mouvement
quantità di moto
運動量
Momentum
pęd
momento linear
impuls
импульс
gibalna količina
动量
The momentum of a system of particles is given by the sum of the momentums of the individual particles which make up the system or by the product of the total mass of the system and the velocity of the center of gravity of the system. The momentum of a continuous medium is given by the integral of the velocity over the mass of the medium or by the product of the total mass of the medium and the velocity of the center of gravity of the medium.
Applicable units are those of quantitykind:Momentum
Particle Fluence
The quantity kind $\textit{Particle Fluence}$ is the total number of particles that intersect a unit area in a specific time interval of interest, and has units of $m^{-2}$ (number of particles per meter squared).
$\Phi = \frac{dN}{dA}$, where $dN$ describes the number of particles incident on a small spherical domain at a given point in space, and $dA$ describes the cross-sectional area of that domain.
"Particle Fluence" is the total number of particles that intersect a unit area in a specific time interval of interest, and has units of /m2 (number of particles per meter squared).
Applicable units are those of quantitykind:ParticleFluence
Phase coefficient
The phase coefficient is the amount of phase shift that occurs as the wave travels one meter. Increasing the loss of the material, via the manipulation of the material's conductivity, will decrease the wavelength (increase $\beta$) and increase the attenuation coefficient (increase $\alpha$).
If $F(x) = Ae^{-\alpha x} \cos{[\beta (x - x_0)]}$, then $\alpha$ is the attenuation coefficient and $\beta$ is the phase coefficient.
Applicable units are those of quantitykind:PhaseCoefficient
Planck Function
The $\textit{Planck function}$ is used to compute the radiance emitted from objects that radiate like a perfect "Black Body". The inverse of the $\textit{Planck Function}$ is used to find the $\textit{Brightness Temperature}$ of an object. The precise formula for the Planck Function depends on whether the radiance is determined on a $\textit{per unit wavelength}$ or a $\textit{per unit frequency}$. In the ISO System of Quantities, $\textit{Planck Function}$ is defined by the formula: $Y = -G/T$, where $G$ is Gibbs Energy and $T$ is thermodynamic temperature.
The Planck function, $B_{\tilde{\nu}}(T)$, is given by: $B_{\nu}(T) = \frac{2h c^2\tilde{\nu}^3}{e^{hc / k \tilde{\nu} T}-1}$ where, $\tilde{\nu}$ is wavelength, $h$ is Planck's Constant, $k$ is Boltzman's Constant, $c$ is the speed of light in a vacuum, $T$ is thermodynamic temperature.
Pressure Coefficient
$\beta = \left (\frac{\partial p}{\partial T} \right )_V$, where $p$ is $pressure$, $T$ is thermodynamic temperature and $V$ is volume.
Applicable units are those of quantitykind:PressureCoefficient
Propagation coefficient
The propagation constant, symbol $\gamma$, for a given system is defined by the ratio of the amplitude at the source of the wave to the amplitude at some distance x.
$\gamma = \alpha + j\beta$, where $\alpha$ is the attenuation coefficient and $\beta$ is the phase coefficient.
Applicable units are those of quantitykind:PropagationCoefficient
Rotational Mass
"Rotational Mass" denotes the inertia of a body with respect to angular acceleration. It is usually measured in kg*m^2.
Applicable units are those of quantitykind:RotationalMass
Sound exposure level
Sound Exposure Level abbreviated as $SEL$ and $LAE$, is the total noise energy produced from a single noise event, expressed as a logarithmic ratio from a reference level.
$L_E = 10 \log_{10} \frac{E}{E_0} dB$, where $E$ is sound power and the reference value is $E_0 = 400 \mu Pa^2 s$.
Applicable units are those of quantitykind:SoundExposureLevel
Sound reduction index
The Sound Reduction Index is used to measure the level of sound insulation provided by a structure such as a wall, window, door, or ventilator.
$R = 10 \log (\frac{1}{\tau}) dB$, where $\tau$ is the transmission factor.
Applicable units are those of quantitykind:SoundReductionIndex
Specific Enthalpy
$\textit{Specific Enthalpy}$ is enthalpy per mass of substance involved. Specific enthalpy is denoted by a lower case h, with dimension of energy per mass (SI unit: joule/kg). In thermodynamics, $\textit{enthalpy}$ is the sum of the internal energy U and the product of pressure p and volume V of a system: $H = U + pV$. The internal energy U and the work term pV have dimension of energy, in SI units this is joule; the extensive (linear in size) quantity H has the same dimension.
$h = H/m$, where $H$ is enthalpy and $m$ is mass.
Specific Gibbs Energy
$\textit{Specific Gibbs Energy}$ is a "corresponding intensive property", which is $\textit{Gibbs Energy}$ per mass of substance involved. Energy has corresponding intensive (size-independent) properties for pure materials. $\textit{Specific Gibbs Energy}$ is denoted by a lower case $g$, with dimension of energy per mass (SI unit: $joule/kg$).
$g = G/m$, where $G$ is Gibbs energy and $m$ is mass.
Energy has corresponding intensive (size-independent) properties for pure materials. A corresponding intensive property is "Specific Gibbs Energy}, which is $\textit{Gibbs Energy} per mass of substance involved. $\textit{Specific Gibbs Energy" is denoted by a lower case g, with dimension of energy per mass (SI unit: joule/kg).
Specific Helmholtz Energy
$\textit{Specific Helmholtz Energy}$ is a "corresponding intensive property", which is $\textit{Helmholz Energy}$ per mass of substance involved. Energy has corresponding intensive (size-independent) properties for pure materials. $\textit{Specific Helmholz Energy}$ is denoted by a lower case $u$, with dimension of energy per mass (SI unit: $joule/kg$).
$a = A/m$, where $A$ is Helmholtz energy and $m$ is mass.
Specific Internal Energy
Energy has corresponding intensive (size-independent) properties for pure materials. A corresponding intensive property is specific internal energy, which is energy per mass of substance involved. Specific internal energy is denoted by a lower case u, with dimension of energy per mass (SI unit: joule/kg).
$u = U/m$, where $U$ is thermodynamic energy and $m$ is mass.
$s^2 = \hbar^2 s(s + 1)$, where $s$ is the spin quantum number and $\hbar$ is the Planck constant.
Applicable units are those of quantitykind:SpinQuantumNumber
Strain Energy Release Rate
In fracture mechanics, the energy release rate, G, is the rate at which energy is transformed as a material undergoes fracture. Mathematically, the energy release rate is expressed as the decrease in total potential energy per increase in fracture surface area, and is thus expressed in terms of energy per unit area.
Applicable units are those of quantitykind:StrainEnergyReleaseRate
Total Current
"Total Current" is the sum of the electric current that is flowing through a surface and the displacement current.
$I_{tot}= I + I_D$, where $I$ is electric current and $I_D$ is displacement current.
Applicable units are those of quantitykind:TotalCurrent
A material's "permeance", is dependent on thickness much like the R-value in heat transmission. Dividing the permeability of a material by its thickness gives the material's permeance. Permeance is the number that should be used to compare various products in regard to moisture transmission resistance.
Applicable units are those of quantitykind:VaporPermeance
Volume Thermal Expansion
When the temperature of a substance changes, the energy that is stored in the intermolecular bonds between atoms changes. When the stored energy increases, so does the length of the molecular bonds. As a result, solids typically expand in response to heating and contract on cooling; this dimensional response to temperature change is expressed by its coefficient of thermal expansion. Different coefficients of thermal expansion can be defined for a substance depending on whether the expansion is measured by: * linear thermal expansion * area thermal expansion * volumetric thermal expansion These characteristics are closely related. The volumetric thermal expansion coefficient can be defined for both liquids and solids. The linear thermal expansion can only be defined for solids, and is common in engineering applications. Some substances expand when cooled, such as freezing water, so they have negative thermal expansion coefficients. [Wikipedia]
Applicable units are those of quantitykind:VolumeThermalExpansion
Acre Foot
An acre-foot is a unit of volume commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, sewer flow capacity, and river flows. It is defined by the volume of one acre of surface area to a depth of one foot. Since the acre is defined as a chain by a furlong ($66 ft \times 660 ft$) the acre-foot is exactly $43,560 cubic feet$. For irrigation water, the volume of $1 ft \times 1 \; ac = 43,560 \; ft^{3} (1,233.482 \; m^{3}, 325,851 \; US gal)$.
unit of the volume, which is used in the United States to measure/gauge the capacity of reservoirs
Barrel
A barrel is one of several units of volume, with dry barrels, fluid barrels (UK beer barrel, U.S. beer barrel), oil barrel, etc. The volume of some barrel units is double others, with various volumes in the range of about 100-200 litres (22-44 imp gal; 26-53 US gal).
BTU per Pound Degree Fahrenheit
British Thermal Unit (therm.) Per Pound Per Fahrenheit Degree (Btu (therm.)/lb- degF) is a unit in the category of Specific heat. This unit is commonly used in the UK unit system. British Thermal Unit (therm.) Per Pound Per Fahrenheit Degree (Btu (therm.)/lb-degF) has a dimension of $L2T^{-2}Q^{-1}$ where $L$ is length, $T$ is time, and $Q$ is temperature. It can be converted to the corresponding standard SI unit $J/kg-K$ by multiplying its value by a factor of 4183.99895.
British Thermal Unit (thermochemical) per Pound Degree Fahrenheit
unit of the thermal conductivity according to the Imperial system of units divided by the units pound and degree Fahrenheit
Coulomb per Square Centimetre
Coulomb per Square Centimeter
derived SI unit coulomb divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Coulomb per Square Millimetre
Coulomb per Square Millimeter
derived SI unit coulomb divided by the 0.000 001-fold of the power of the SI base unit metre by exponent 2
Calorie (international Table) per Gram Degree Celsius
unit calorieIT divided by the products of the units gram and degree Celsius
Calorie (international Table) per Gram Kelvin
unit calorieIT divided by the product of the SI base unit gram and Kelvin
Calorie (thermochemical) per Gram Degree Celsius
unit calorie (thermochemical) divided by the product of the unit gram and degree Celsius
Calorie (thermochemical) per Gram Kelvin
unit calorie (thermochemical) divided by the product of the SI derived unit gram and the SI base unit Kelvin
Abcoulomb per Square Centimetre
Abcoulomb per Square Centimeter
Abcoulomb Per Square Centimeter is a unit in the category of Electric charge surface density. It is also known as abcoulombs per square centimeter, abcoulomb per square centimetre, abcoulombs per square centimetre, abcoulomb/square centimeter,abcoulomb/square centimetre. This unit is commonly used in the cgs unit system. Abcoulomb Per Square Centimeter (abcoulomb/cm2) has a dimension of $L_2TI$. where $L$ is length, $T$ is time, and $I$ is electric current. It can be converted to the corresponding standard SI unit $C/m^2$ by multiplying its value by a factor of 100,000.
Statcoulomb
The statcoulomb ($statC$) or franklin ($Fr$) or electrostatic unit of charge ($esu$) is the physical unit for electrical charge used in the centimetre-gram-second system of units (cgs) and Gaussian units. It is a derived unit given by $1\ statC = 1\ g\ cm\ s = 1\ erg\ cm$. The SI system of units uses the coulomb (C) instead. The conversion between C and statC is different in different contexts. The number 2997924580 is 10 times the value of the speed of light expressed in meters/second, and the conversions are exact except where indicated. The coulomb is an extremely large charge rarely encountered in electrostatics, while the statcoulomb is closer to everyday charges.
$1 C \leftrightarrow 2997924580 statC \approx 3.00 \times 10^9 statC,\ 1 \hspace{0.3pc} statC \leftrightarrow \hspace{0.3pc} \approx 3.34 \times 10^{-10} C$ for electric charge.
$1 C \leftrightarrow 4 \pi \times 2997924580 statC \approx 3.77 \times 10^{10} statC,\ 1 \hspace{0.3pc} statC \leftrightarrow \hspace{0.2pc} \approx 2.6 \times 10^{-11} C$ for electric flux $\Phi_D$
$1 C/m \leftrightarrow 4 \pi \times 2997924580 \times 10^{-4} statC/cm \approx 3.77 \times 10^6 statC/cm,\ 1 \hspace{0.3pc} statC/cm \leftrightarrow \hspace{0.3pc} \approx 2.65 \times 10^{-7} C/m$ for electric displacement field $D$.
Statcoulomb per Square Centimetre
Statcoulomb per Square Centimeter
$\textit{Statcoulomb per Square Centimeter}$ is a unit of measure for electric flux density and electric polarization. One Statcoulomb per Square Centimeter is $2.15\times 10^9 \, coulomb\,per\,square\,inch$.
Centimole per litre
1/100 of SI unit of amount of substance per litre
0.01-fold of the SI derived unit newton divided by the SI base unit metre to the power two
Degree Balling
unit for the mixing ratio of a soluble dry substance in water at 17.5 degrees C similar to the percent designation for solutions, in which a solution of 1 g saccharose in 100 g saccharose/ water solution corresponds to 1 degree Balling and respectively a one percent solution
Degree Baume (origin Scale)
graduation of the areometer scale for determination of densitiy of fluids. The Baumé scale is a pair of hydrometer scales developed by French pharmacist Antoine Baumé in 1768 to measure density of various liquids. The unit of the Baumé scale has been notated variously as degrees Baumé, B°, Bé° and simply Baumé (the accent is not always present). One scale measures the density of liquids heavier than water and the other, liquids lighter than water. The Baumé of distilled water is 0. The API gravity scale is based on errors in early implementations of the Baumé scale.
Degree Baume (US Heavy)
graduation of the areometer scale for determination of density of fluids according to the Anglo-American system of units, which are heavier than water
Degree Baume (US Light)
graduation of the areometer scale for determination of density of fluids according to the Anglo-American system of units, which are lighter than water
Degree Brix
unit named according to Adolf Brix for the mixing ratio of a soluble dry substance in water with 15.5 °C similar to the percent designation for solutions, in which a solution of 1 g saccharose in 100 g saccharose/water solution corresponds to 1 °Brix and respectively an one percent solution
Degree Oechsle
unit of the density of the must, as measure for the proportion of the soluble material in the grape must
Degree Plato
unit for the mixing ratio of the original gravity in the beer brew at 17.5 °C before the fermentation
Degree Twaddell
unit of the density of fluids, which are heavier than water
Cubic Decimetre
Cubic Decimeter
0.1-fold of the power of the SI base unit metre with the exponent 3
Cubic Foot
The cubic foot is an Imperial and US customary unit of volume, used in the United States and the United Kingdom. It is defined as the volume of a cube with sides of one foot (0.3048 m) in length. To calculate cubic feet multiply length X width X height.
Femtograms per litre
One 10**18 part of the SI standard unit of mass of the measurand per litre volume of matrix..
Gravity
"Gravity" is a unit for 'Linear Acceleration' expressed as $G$.
Gram per Cubic Centimetre
Gram per Cubic Centimeter
0,001-fold of the SI base unit kilogram divided by the 0.000 001-fold of the power of the SI base unit metre with the exponent 3
0.001-fold of the SI base unit kilogram divided by the 0.000001-fold of the power of the SI base unit metre with the exponent 3
grams per decilitre
A derived unit for amount-of-substance concentration measured in g/dL.
Gram per Litre
Gram per Liter
0,001-fold of the SI base unit kilogram divided by the unit litre
Gram per Cubic Metre
Gram per Cubic Meter
0,001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
Gram per Millilitre
0,001-fold of the SI base unit kilogram divided by the 0.001-fold of the unit litre
0.001-fold of the SI base unit kilogram divided by the 0.000001-fold of the power of the SI base unit meter by exponent 2
Grain per Gallon
"Grain per Gallon" is an Imperial unit for 'Density' expressed as $gr/gal$.
Grain per Gallon (US)
unit of the density according to the Anglo-American system of units
Grains per Cubic Metre
Grains per Cubic Meter
Gigajoule per Square Metre
Gigajoule per Square Meter
Gigajoule Per Square Meter ($J/m^2$) is a unit in the category of Energy density. It is also known as Gigajoules per square meter, Gigajoule per square metre, Gigajoule/square meter, Gigajoule/square metre.
1,000,000,000-fold of the SI derived unit newton divided by the SI base unit metre to the power two
International Unit
The $\textit{International Unit}$ is a unit for $\textit{Amount Of Substance}$ expressed as $IU$. Note that the magnitude depends on the substance, thus there is no fixed conversion multiplier.
joule per gram degree celsius
Joule per Gram Kelvin
Joule per Gram Kelvin is a unit typically used for specific heat capacity.
joule na kilogram stupně celsia
Joule je Kilogramm Grad Celsius
joule per kilogram degree celsius
julio porkilogramo grado celsius
joule par kilogramme-degré celsius
joule al chilogrammo per grado celsius
joule per kilogram darjah celsius
dżul na kilogramostopień celsjusza
joule por quilograma grau celsius
joule pe kilogram-grad celsius
джоуль на килограмм-градус цельсия
joule na kilogram stopinja celzija
joule per kilogram celsius
Joule per Kilogram Kelvin
Specific heat capacity - The heat required to raise unit mass of a substance by unit temperature interval under specified conditions, such as constant pressure: usually measured in joules per kelvin per kilogram. Symbol $c_p$ (for constant pressure). Also called specific heat.
Joule per Square Metre
Joule per Square Meter
Joule Per Square Meter ($J/m^2$) is a unit in the category of Energy density. It is also known as joules per square meter, joule per square metre, joule/square meter, joule/square metre. This unit is commonly used in the SI unit system.
Joule per Cubic Metre
Joule per Cubic Meter
$\textit{Joule Per Cubic Meter}$ ($J/m^{3}$) is a unit in the category of Energy density. It is also known as joules per cubic meter, joule per cubic metre, joules per cubic metre, joule/cubic meter, joule/cubic metre. This unit is commonly used in the SI unit system. It has a dimension of $ML^{-1}T^{-2}$ where $M$ is mass, $L$ is length, and $T$ is time. This unit is the standard SI unit in this category.
kiloampere
Calorie per Gram Degree Celsius
$\textit{Calorie per Gram Degree Celsius}$ is a unit for 'Specific Heat Capacity' expressed as $kcal/(gm-degC)$.
Kilocalorie (thermochemical)
Thousand Cubic Foot
Kilogram per Cubic Centimetre
Kilogram per Cubic Centimeter
SI base unit kilogram divided by the 0.000 001-fold of the power of the SI base unit metre with the exponent 3
Kilogram per Cubic Decimetre
Kilogram per Cubic Decimeter
SI base unit kilogram divided by the 0.001-fold of the power of the SI base unit metre with the exponent 3
Kilogram per Litre
Kilogram per Liter
SI base unit kilogram divided by the unit litre
Kilogram per Square Metre
Kilogram per Square Meter
Kilogram Per Square Meter (kg/m2) is a unit in the category of Surface density. It is also known as kilograms per square meter, kilogram per square metre, kilograms per square metre, kilogram/square meter, kilogram/square metre. This unit is commonly used in the SI unit system. Kilogram Per Square Meter (kg/m2) has a dimension of ML-2 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
Kilojoule per Kilogram Kelvin
1 000-fold of the SI derived unit joule divided by the product of the SI base unit kilogram and the SI base unit kelvin
Kilolitre
1,000-fold of the SI derived unit newton divided by the SI base unit metre to the power two
Pound per Cubic Foot
"Pound per Cubic Foot" is an Imperial unit for 'Density' expressed as $lb/ft^{3}$.
Pound (avoirdupois) per Gallon (US)
unit of the mass avoirdupois pound according to the avoirdupois system divided by the unit gallon (US, liq.) according to the Anglo-American system of units
Pound per Cubic Inch
"Pound per Cubic Inch" is an Imperial unit for 'Density' expressed as $lb/in^{3}$.
Pound per Cubic Metre
Pound per Cubic Meter
"Pound per Cubic Meter" is a unit for 'Density' expressed as $lb/m^{3}$.
unit for areal-related mass as a unit pound according to the avoirdupois unit system divided by the power of the unit yard according to the Anglo-American and Imperial system of units with exponent 2
Pound per Cubic Yard
"Pound per Cubic Yard" is an Imperial unit for 'Density' expressed as $lb/yd^{3}$.
Pound Force per Inch
"Pound Force per Inch" is an Imperial unit for 'Force Per Length' expressed as $lbf/in$.
متر مربع في الثانية
čtvereční metr za sekundu
Quadratmeter je Sekunde
square metre per second
Square Meter per Second
metro cuadrado por segundo
متر مربع بر ثانیه
mètre carré par seconde
वर्ग मीटर प्रति सैकिण्ड
metro quadrato al secondo
平方メートル毎秒
meter persegi per saat
metr kwadratowy na sekundę
metro quadrado por segundo
metru pătrat pe secundă
квадратный метр в секунду
kvadratni meter na sekundo
metrekare bölü saniye
平方米每秒
The unit $\textit{Square Metres per Second}$ is the SI derived unit of angular momentum, defined by distance or displacement in metres multiplied by distance again in metres and divided by time in seconds. The unit is written in symbols as $m^2/s$ or $m^22s^{-1}$. It may be better understood when phrased as $\textit{metres per second times metres}$, i.e. the momentum of an object with respect to a position.
unit of volume according to the Imperial system of units
Megacoulomb per Square Metre
Megacoulomb per Square Meter
1 000 000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 2
Megagram per Cubic Metre
Megagram per Cubic Meter
1 000-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
1,000,000-fold of the SI derived unit newton divided by the SI base unit metre to the power two
Microcoulomb per Square Metre
Microcoulomb per Square Meter
0.000001-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 2
Microgram per Decilitre
Microgram per Deciliter
0.0000000001-fold of the SI base unit kilogram divided by the unit decilitre
0.000001-fold of the SI derived unit newton divided by the SI base unit metre to the power two
MilliCoulomb
Millicoulomb per Square Metre
Millicoulomb per Square Meter
0.001-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 2
Millijoule per Square Metre
Millijoule per Square Meter
Millijoule Per Square Meter ($mJ/m^2$) is a unit in the category of Energy density. It is also known as millijoules per square meter, millijoule per square metre, millijoule/square meter, millijoule/square metre.
0.001-fold of the SI derived unit newton divided by the SI base unit metre to the power two
Newton Metre per Square Metre
Newton Meter per Square Meter
product of the SI derived unit newton and the SI base unit metre divided by the power of the SI base unit metre with the exponent 2
Nanogram per Decilitre
A derived unit for amount-of-substance concentration measured in ng/dL.
Nanogram per Cubic Metre
Nanogram per Cubic Meter
"0.000000000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3"
0.000000000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
"Derived from GM-PER-M3 which exists in QUDT"
Nanogram per Microlitre
Nanolitre
Nanomoles per litre
A scaled unit of amount-of-substance concentration.
0.000000001-fold of the SI derived unit newton divided by the SI base unit metre to the power two
Ounce (avoirdupois) per Gallon (US)
unit of the surface specific mass (avoirdupois ounce according to the avoirdupois system of units according to the surface square inch according to the Anglo-American and Imperial system of units)
Imperial Mass Ounce per Cubic Inch
"Ounce per Cubic Inch" is an Imperial unit for 'Density' expressed as $oz/in^{3}$.
Ounce (avoirdupois) per Cubic Yard
unit ounce according to the avoirdupois system of units divided by the power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3
Imperial Pint
"Imperial Pint" is an Imperial unit for 'Volume' expressed as $pint$.
Picograms per litre
One 10**15 part of the SI standard unit of mass of the measurand per litre volume of matrix..
Picolitre
Planck Density
The Planck density is the unit of density, denoted by $\rho_P$, in the system of natural units known as Planck units. $1\ \rho_P \ is \approx 5.155 \times 10^{96} kg/m^3$. This is a unit which is very large, about equivalent to $10^{23}$ solar masses squeezed into the space of a single atomic nucleus. At one unit of Planck time after the Big Bang, the mass density of the universe is thought to have been approximately one unit of Planck density.
Planck Angular Frequency
siemensů na metr
Siemens je Meter
siemens per metre
Siemens per Meter
siemens por metro
زیمنس بر متر
siemens par mètre
प्रति मीटर सीमैन्स
siemens al metro
ジーメンス毎メートル
siemens per meter
simens na metr
siemens pe metru
сименс на метр
siemens na meter
siemens bölü metre
西门子每米
SI derived unit siemens divided by the SI base unit metre
Slug per Cubic Foot
"Slug per Cubic Foot" is an Imperial unit for 'Density' expressed as $slug/ft^{3}$.
Abtesla
The unit of magnetic induction in the cgs system, $10^{-4}\,tesla$. Also known as the gauss.
Air Flow Setpoint
Sets air flow
Building Meter
A meter that measures usage or consumption of some media for a whole building
CO Concentration
The concentration of carbon monoxide in a medium
Common Space
A class of spaces that are used by multiple people at the same time
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Space
Cooling Supply Air Flow Setpoint
Sets supply air flow rate for cooling
Data Network Equipment
Dewpoint Sensor
Senses the dewpoint temperature . Dew point is the temperature to which air must be cooled to become saturated with water vapor
Differential Setpoint
A type of Setpoints that is related to the difference between two measurements
Entering Chilled Water
Entering Hot Water
Fire Safety Equipment
Gas
state of matter in which substances exist in the form of nonaggregated molecules and which, within acceptable limits of accuracy, satisfy the ideal gas laws; usually a highly superheated vapor. See state.
Heat Exchanger
A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. The media may be separated by a solid wall to prevent mixing or they may be in direct contact (BEDES)
Heating Supply Air Flow Setpoint
Sets supply air flow rate for heating
Integral Time Parameter
Leaving Water Temperature Setpoint
Sets temperature of leaving water
Liquid
state of matter intermediate between crystalline substances and gases in which the volume of a substance, but not the shape, remains relatively constant.
Max Cooling Supply Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Cooling_Supply_Air_Flow_Setpoint.
Max Heating Supply Air Flow Setpoint Limit
A parameter that places an upper bound on the range of permitted values of a Heating_Supply_Air_Flow_Setpoint.
Min Cooling Supply Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Cooling_Supply_Air_Flow_Setpoint.
Min Heating Supply Air Flow Setpoint Limit
A parameter that places a lower bound on the range of permitted values of a Heating_Supply_Air_Flow_Setpoint.
Mixed Air
(1) air that contains two or more streams of air. (2) combined outdoor air and recirculated air.
Occupied Supply Air Flow Setpoint
Sets supply air flow rate when occupied
On Off Command
An On/Off Command controls or reports the binary status of a control loop, relay or equipment activity
Pressure Sensor
Measure the amount of force acting on a unit area
Start Stop Status
Indicates the active/inactive status of a control loop (but not equipment activities or relays -- use On/Off for this purpose)
Supply Air Flow Reset Setpoint
Supply Air Temperature Alarm
An alarm that indicates the off-normal conditions associated with the temperature of supply air.
Supply Air Temperature Deadband Setpoint
Sets the size of a deadband of temperature of supply air
Supply Air Temperature Proportional Band Parameter
Supply Air Temperature Reset Differential Setpoint
Supply Air Temperature Setpoint Limit
A parameter that places a lower or upper bound on the range of permitted values of a Supply_Air_Temperature_Setpoint.
Supply Water Temperature Sensor
Temperature High Reset Setpoint
Temperature Low Reset Setpoint
Unoccupied Supply Air Flow Setpoint
Water Valve
A valve that modulates the flow of water
Zone
(1) a separately controlled heated or cooled space. (2) one occupied space or several occupied spaces with similar occupancy category, occupant density, zone air distribution effectiveness, and zone primary airflow per unit area. (3) space or group of spaces within a building for which the heating, cooling, or lighting requirements are sufficiently similar that desired conditions can be maintained throughout by a single controlling device.
Timestamp
The ambient temperature at which the current input was measured
The ambient temperature at which the voltage was measured
Access
Adjust
Angle
Beam
Breaker
Ceiling
Charging
Close
Cold
Conditioning
Detector
Disconnect
Duct
Embedded
Failure
Frame
Fresh
Gauge
Generator
Grains
Hardware
Heater
Imbalance
Intercom
Lead
Metering
Overridden
Parking
Rain
Ratio
Reducing
Sensitivity
Surveillance
Tolerance
Vehicle
Ventilation
used only with array datatypes; if omitted with an array the entire array is referenced
نبضة دفعية زاوية
Drehstoß
angular impulse
impulso angular
impulsion angulaire
impulso angolare
角力積
popęd kątowy
impulsão angular
角冲量;冲量矩
The Angular Impulse, also known as angular momentum, is the moment of linear momentum around a point. It is defined as$H = \int Mdt$, where $M$ is the moment of force and $t$ is time.
Applicable units are those of quantitykind:AngularImpulse
Drehmomentstoß
Angular Reciprocal Lattice Vector
"Angular Reciprocal Lattice Vector" is a vector whose scalar products with all fundamental lattice vectors are integral multiples of $2\pi$.
Applicable units are those of quantitykind:AreaBitDensity
Attenuation Coefficient
The attenuation coefficient is a quantity that characterizes how easily a material or medium can be penetrated by a beam of light, sound, particles, or other energy or matter. A large attenuation coefficient means that the beam is quickly "attenuated" (weakened) as it passes through the medium, and a small attenuation coefficient means that the medium is relatively transparent to the beam. The Attenuation Coefficient is also called linear attenuation coefficient, narrow beam attenuation coefficient, or absorption coefficient.
$F(x) = Ae^{-\alpha x} \cos{[\beta (x - x_0)]}$, then $\alpha$ is the attenuation coefficient and $\beta$ is the phase coefficient.
Applicable units are those of quantitykind:AttenuationCoefficient
Compressibility
Compressibility is a measure of the relative volume change of a fluid or solid as a response to a pressure (or mean stress) change.
$\chi = -(\frac{1}{V})\frac{dV}{d\rho}$, where $V$ is volume and $p$ is pressure.
Applicable units are those of quantitykind:Compressibility
Dew Point Temperature
"Dew Point Temperature" is the temperature at which vapour in air reaches saturation.
Displacement Current
"Displacement Current" is a quantity appearing in Maxwell's equations that is defined in terms of the rate of change of electric displacement field. Displacement current has the units of electric current density, and it has an associated magnetic field just as actual currents do. However it is not an electric current of moving charges, but a time-varying electric field. In materials, there is also a contribution from the slight motion of charges bound in atoms, dielectric polarization.
$I_D= \int_S J_D \cdot e_n dA$, over a surface $S$, where $J_D$ is displacement current density and $e_n dA$ is the vector surface element.
Applicable units are those of quantitykind:DisplacementCurrent
Dose Equivalent
"Dose Equivalent" (former), or $\textit{Equivalent Absorbed Radiation Dose}$, usually shortened to $\textit{Equivalent Dose}$, is a computed average measure of the radiation absorbed by a fixed mass of biological tissue, that attempts to account for the different biological damage potential of different types of ionizing radiation. The equivalent dose to a tissue is found by multiplying the absorbed dose, in gray, by a dimensionless "quality factor" $Q$, dependent upon radiation type, and by another dimensionless factor $N$, dependent on all other pertinent factors. N depends upon the part of the body irradiated, the time and volume over which the dose was spread, even the species of the subject.
At the point of interest in tissue, $H = DQ$, where $D$ is the absorbed dose and $Q$ is the quality factor at that point.
Applicable units are those of quantitykind:DoseEquivalent
Dynamic Pressure
Dynamic Pressure (indicated with q, or Q, and sometimes called velocity pressure) is the quantity defined by: $q = 1/2 * \rho v^{2}$, where (using SI units), $q$ is dynamic pressure in $pascals$, $\rho$ is fluid density in $kg/m^{3}$ (for example, density of air) and $v $ is fluid velocity in $m/s$.
Electromagnetic Wave Phase Speed
$\textit{Electromagnetic Wave Phase Speed}$ is the ratio of angular velocity and wavenumber.
$c = w/k$ where $w$ is angular velocity and $k$ is angular wavenumber.
"Electromagnetic Wave Phase Speed" is the ratio of angular velocity and wavenumber.
Applicable units are those of quantitykind:ElectromagneticWavePhaseSpeed
Impedance
"Impedance" is the measure of the opposition that a circuit presents to the passage of a current when a voltage is applied. In quantitative terms, it is the complex ratio of the voltage to the current in an alternating current (AC) circuit. Impedance extends the concept of resistance to AC circuits, and possesses both magnitude and phase, unlike resistance, which has only magnitude. When a circuit is driven with direct current (DC), there is no distinction between impedance and resistance; the latter can be thought of as impedance with zero phase angle.
$\underline{Z} = \underline{U} / \underline{I}$, where $\underline{U}$ is the voltage phasor and $\underline{I}$ is the electric current phasor.
Applicable units are those of quantitykind:Impedance
Internal Energy
"Internal Energy" is simply its energy. "internal" refers to the fact that some energy contributions are not considered. For instance, when the total system is in uniform motion, it has kinetic energy. This overall kinetic energy is never seen as part of the internal energy; one could call it external energy. Or, if the system is at constant non-zero height above the surface the Earth, it has constant potential energy in the gravitational field of the Earth. Gravitational energy is only taken into account when it plays a role in the phenomenon of interest, for instance in a colloidal suspension, where the gravitation influences the up- downward motion of the small particles comprising the colloid. In all other cases, gravitational energy is assumed not to contribute to the internal energy; one may call it again external energy.
Applicable units are those of quantitykind:InverseMass
شدة الإضاءة
Интензитет на светлината
Svítivost
Lichtstärke
Ένταση Φωτεινότητας
luminous intensity
intensidad luminosa
شدت نور
intensité lumineuse
עוצמת הארה
प्रकाशीय तीव्रता
fényerősség
intensità luminosa
光度
intensitas luminosa
Keamatan berluminositi
światłość
intensidade luminosa
intensitate luminoasă
Сила света
svetilnost
ışık şiddeti
发光强度
Luminous Intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle. The weighting is determined by the luminosity function, a standardized model of the sensitivity of the human eye to different wavelengths.
Applicable units are those of quantitykind:LuminousIntensity
Magnetic Tension
"Magnetic Tension" is a scalar quantity equal to the line integral of the magnetic field strength $\mathbf{H}$ along a specified path linking two points a and b.
$U_m = \int_{r_a(C)}^{r_b} \mathbf{H} \cdot dr$, where $\mathbf{H}$ is magnetic field strength and $r$ is the position vector along a given curve $C$ from point $a$ to point $b$.
Magnetic Tension is a scalar quantity equal to the line integral of the magnetic field strength H along a specified path linking two points a and b.
Applicable units are those of quantitykind:MagneticTension
pressure gradient
differential pressure divided by the associated length
Differenzdruck dividiert durch die zugehörige Länge
Applicable units are those of quantitykind:PressureGradient
Quantum Number
The "Quantum Number" describes values of conserved quantities in the dynamics of the quantum system. Perhaps the most peculiar aspect of quantum mechanics is the quantization of observable quantities, since quantum numbers are discrete sets of integers or half-integers.
Applicable units are those of quantitykind:QuantumNumber
Sound power level
Sound Power Level abbreviated as $SWL$ expresses sound power more practically as a relation to the threshold of hearing - 1 picoW - in a logarithmic scale.
$L_W = 10 \log_{10} \frac{P}{P_0} dB$, where $P$ is sound power and the reference value is $P_0 =1pW$.
كمية جذر الطاقة
Hladina akustického tlaku
Schalldruckpegel
sound pressure level
nivel de presión sonora
سطح یک کمیت توان-ریشه
niveau de pression acoustique
livello di pressione sonora
利得
Tahap medan
miary wielkości ilorazowych
nível de pressão acústica
уровень звукового давления
gerilim veya akım oranı
声压级
Sound pressure level ($SPL$) or sound level is a logarithmic measure of the effective sound pressure of a sound relative to a reference value. It is measured in decibels (dB) above a standard reference level.
$L_P = 10 \log_{10} \frac{p^2}{p_0^2} dB$, where $p$ is sound pressure and the reference value in airborne acoustics is $p_0 = 20 \mu Pa$.
Applicable units are those of quantitykind:SoundPressureLevel
Tahap tekanan bunyi
Specific Activity
The "Specific Activity" is the number of decays per unit time of a radioactive sample. The SI unit of radioactive activity is the becquerel (Bq), in honor of the scientist Henri Becquerel.
$a = \frac{A}{m}$, where $A$ is the activity of a sample and $m$ is its mass.
Applicable units are those of quantitykind:SpecificActivity
Stress-Optic Coefficient
When a ray of light passes through a photoelastic material, its electromagnetic wave components are resolved along the two principal stress directions and each component experiences a different refractive index due to the birefringence. The difference in the refractive indices leads to a relative phase retardation between the two components. Assuming a thin specimen made of isotropic materials, where two-dimensional photoelasticity is applicable, the magnitude of the relative retardation is given by the stress-optic law Δ=((2πt)/λ)C(σ₁-σ₂), where Δ is the induced retardation, C is the stress-optic coefficient, t is the specimen thickness, λ is the vacuum wavelength, and σ₁ and σ₂ are the first and second principal stresses, respectively.
When a ray of light passes through a photoelastic material, its electromagnetic wave components are resolved along the two principal stress directions and each component experiences a different refractive index due to the birefringence. The difference in the refractive indices leads to a relative phase retardation between the two components. Assuming a thin specimen made of isotropic materials, where two-dimensional photoelasticity is applicable, the magnitude of the relative retardation is given by the stress-optic law $\Delta ={\frac {2\pi t}{\lambda }}C(\sigma _{1}-\sigma _{2})$, where $\Delta$ is the induced retardation, $C$ is the stress-optic coefficient, $t$ is the specimen thickness, $\lambda$ is the vacuum wavelength, and $\sigma_1$ and $\sigma_2$ are the first and second principal stresses, respectively.
Applicable units are those of quantitykind:StressOpticCoefficient
Surface Density
The area density (also known as areal density, surface density, or superficial density) of a two-dimensional object is calculated as the mass per unit area.
$\rho_A = \frac{dm}{dA}$, where $m$ is mass and $A$ is area.
Applicable units are those of quantitykind:SurfaceDensity
Thermal Insulance
$\textit{Thermal Insulance}$ is the reduction of heat transfer (the transfer of thermal energy between objects of differing temperature) between objects in thermal contact or in range of radiative influence. In building technology, this quantity is often called $\textit{Thermal Resistance}$, with the symbol $R$.
$M = 1/K$, where $K$ is "Coefficient of Heat Transfer"
Applicable units are those of quantitykind:ThermalInsulance
Applicable units are those of quantitykind:VolumetricBitDensity
Ampere per Centimetre
Ampere per Centimeter
SI base unit ampere divided by the 0.01-fold of the SI base unit metre
Ampere per Millimetre
Ampere per Millimeter
SI base unit ampere divided by the 0.001-fold of the SI base unit metre
Ampere Second
product out of the SI base unit ampere and the SI base unit second
бел
bel
Bel
μπέλ
belio
बेल
ベル
The $\textit{Bel}$ is a logarithmic unit of sound pressure equal to 10 decibels (dB). It is defined as: $1 B = (1/2) \log_{10}(Np)$
Bar Litre per Second
Bar Liter per Second
The unit $\textit{Bar Litre Per Second}$ is the product of the unit $bar$ and the unit $litre$ divided by the SI base unit for second.
The unit 'Bar Litre Per Second' is the product of the unit bar and the unit litre divided by the SI base unit second
Bar Cubic Metre per Second
Bar Cubic Meter per Second
product out of the 0.001-fold of the unit bar and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
BTU-IT-PER-lb
The amount of energy generated by a pound of substance is measured in British thermal units (IT) per pound of mass. 1 $Btu_{IT}/lb$ is equivalent to $2.326 \times 10^3$ joule per kilogram (J/kg).
British Thermal Unit (TH) per Pound
${\bf Btu_{th} / lbm}$, British Thermal Unit (therm.) Per Pound Mass, is a unit in the category of Thermal heat capacity. It is also known as Btu per pound, Btu/pound, Btu/lb. This unit is commonly used in the UK unit system. British Thermal Unit (therm.) Per Pound Mass (Btu (therm.)/lbm) has a dimension of $L^2T^{-2}$ where $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit J/kg by multiplying its value by a factor of 2324.443861.
Calorie (international Table) per Gram
Calories produced per gram of substance.
unit calorie according to the international steam table divided by the 0.001-fold of the SI base unit kilogram
Calorie (thermochemical) per Gram
Thermochemical Calorie. Calories produced per gram of substance.
unit thermochemical calorie divided by the 0.001-fold of the SI base unit kilogram
Euro
Decibel Referred to 1mw
"Decibel Referred to 1mw" is a 'Dimensionless Ratio' expressed as $dBm$.
Erg per Gram
Erg per Second
"Erg per Second" is a C.G.S System unit for 'Power' expressed as $erg/s$.
1,000,000,000,000,000,000-fold of the SI derived unit joule divided by the SI base unit second
Femtomoles per litre
A 10**18 part quantity of substance of the measurand per litre volume of matrix.
0.000000000000001-fold of the SI derived unit volt
Gram per Cubic Decimetre
Gram per Cubic Decimeter
0,001-fold of the SI base unit kilogram divided by the 0.001-fold of the power of the SI base unit metre with the exponent 3
Gigajoule per Hour
SI derived unit Gigajoule divided by the 3600 times the SI base unit second
1,000,000,000-fold of the SI derived unit joule divided by the SI base unit second
Horsepower
Horsepower (brake)
unit of the power according to the Imperial system of units
Horsepower (electric)
Horsepower (metric)
unit of the mechanical power according to the Anglo-American system of units
Hectopascal Litre per Second
Hectopascal Liter per Second
product out of the 100-fold of the SI derived unit pascal and the unit litre divided by the SI base unit second
Hectopascal Cubic Metre per Second
Hectopascal Cubic Meter per Second
product out of the 100-fold of the SI unit pascal and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
quotient from the SI derived unit joule divided by the unit day
Joule per Gram
SI derived unit joule divided by the 0.001-fold of the SI base unit kilogram
Joule per Hour
SI derived unit joule divided by the 3600 times the SI base unit second
Joule per Kilogram
A $\textit{Joule Per Kilogram}$, ($J/kg$), is a unit in the category of Thermal heat capacity. It is also known as $\textit{joules per kilogram}$. The unit has a dimension of $L2T^{-2}$ where $L$ is length, and $T$ is time. This unit is the standard SI unit in this category.
quotient from the SI derived unit joule divided by the unit minute
جول لكل مول
joule na mol
Joule je Mol
joule per mole
julio por mol
ژول بر مول
joule par mole
जूल प्रति मोल (इकाई)
joule alla mole
dżul na mol
joule por mol
joule pe mol
джоуль на моль
joule bölü metre küp
焦耳每摩尔
The joule per mole (symbol: $J\cdot mol^{-1}$) is an SI derived unit of energy per amount of material. Energy is measured in joules, and the amount of material is measured in moles. Physical quantities measured in $J\cdot mol^{-1}$) usually describe quantities of energy transferred during phase transformations or chemical reactions. Division by the number of moles facilitates comparison between processes involving different quantities of material and between similar processes involving different types of materials. The meaning of such a quantity is always context-dependent and, particularly for chemical reactions, is dependent on the (possibly arbitrary) definition of a 'mole' for a particular process.
Kiloampere per Metre
Kiloampere per Meter
1 000-fold of the SI base unit ampere divided by the SI base unit metre
Kilocoulomb per Square Metre
Kilocoulomb per Square Meter
1 000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 2
Kilocalorie per Gram
"Kilocalorie per Gram" is a unit for 'Specific Energy' expressed as $kcal/gm$.
quotient from the 1,000-fold of the SI derived unit joule divided by the unit day
quotient from the 1,000-fold of the SI derived unit joule divided by the unit hour
Kilojoule per Kilogram
1 000-fold of the SI derived unit joule divided by the SI base unit kilogram
quotient from the 1,000-fold of the SI derived unit joule divided by the unit minute
quotient from the 1,000-fold of the SI derived unit joule divided by the SI base unit second
Pound Force Foot per Pound
product of the Anglo-American unit pound-force and the Anglo-American unit foot divided by the Anglo-American unit pound (US) of mass
Kilomole per Cubic Metre
Kilomole per Cubic Meter
1 000-fold of the SI base unit mol divided by the power of the SI base unit metre with the exponent 3
Pound per Gallon
"Pound per Gallon" is an Imperial unit for 'Density' expressed as $lb/gal$.
Pound (avoirdupois) per Gallon (UK)
unit of the mass avoirdupois pound according to the avoirdupois system of units divided by the unit gallon (UK) according to the Imperial system of units
لكس
лукс
lux
Lux
لوکس
לוקס
लक्स
ルクス
luks
люкс
lüks
勒克斯
Mole per Cubic Decimetre
Mole per Cubic Decimeter
SI base unit mol divided by the 0.001-fold of the power of the SI base unit metre with the exponent 3
Mole per Litre
Mole per Liter
SI base unit mol divided by the unit litre
Mole per Cubic Metre
Mole per Cubic Meter
The SI derived unit for amount-of-substance concentration is the mole/cubic meter.
Megajoule per Hour
SI derived unit MegaJoule divided by the 3600 times the SI base unit second
Megajoule per Kilogram
1,000,000-fold of the derived SI unit joule divided by the SI base unit kilogram
Megajoule per Second
quotient of the 1,000,000-fold of the derived SI unit joule divided by the SI base unit second
Megaohm
Megapascal Litre per Second
Megapascal Liter per Second
product out of the 1,000,000-fold of the SI derived unit pascal and the unit litre divided by the SI base unit second
Megapascal Cubic Metre per Second
Megapascal Cubic Meter per Second
product out of the 1,000,000-fold of the SI derived unit pascal and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
Microgram per Litre
Microgram per Liter
0.000000001-fold of the SI base unit kilogram divided by the unit litre
Microgram per MilliLitre
Microgram per Milliliter
One 10**6 part of the SI standard unit of mass of the measurand per millilitre volume of matrix.
0.000000000001-fold of the SI base unit kilogram divided by the unit microlitre
0.000001-fold of the SI derived unit joule divided by the SI base unit second
Micromoles per litre
Milliampere per Inch
0.001-fold of the SI base unit ampere divided by the unit inch according to the Anglo-American and the Imperial system of units
Milliampere per Millimetre
Milliampere per Millimeter
0.001-fold of the SI base unit ampere divided by the 0.001-fold of the SI base unit metre
Millibar Litre per Second
Millibar Liter per Second
product out of the 0.001-fold of the unit bar and the unit litre divided by the SI base unit second
Millibar Cubic Metre per Second
Millibar Cubic Meter per Second
product of the unit bar and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
milligrams per decilitre
A derived unit for amount-of-substance concentration measured in mg/dL.
Milligram per Litre
Milligram per Liter
0.000001-fold of the SI base unit kilogram divided by the unit litre
Milligram per Cubic Metre
Milligram per Cubic Meter
Milligram per Kubieke Meter
0.000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
Milligram per Millilitre
Milligram per Milliliter
A scaled unit of mass concentration.
0.000001-fold of the SI base unit kilogram divided by the unit millilitre
Millijoule per Gram
The 0.001-fold of the SI base unit joule divided by the 0.001-fold of the SI base unit kilogram.
0.001-fold of the SI derived unit joule divided by the SI base unit second
Millimoles per cubic metre
Newton Metre per Kilogram
Newton Meter per Kilogram
product of the derived SI unit newton and the SI base unit metre divided by the SI base unit kilogram
Nanogram per Litre
Nanogram per Liter
Nanogram per Millilitre
One 10**12 part of the SI standard unit of mass of the measurand per millilitre volume of matrix.
0.000000001-fold of the SI derived unit joule divided by the SI base unit second
Imperial Mass Ounce per Gallon
"Ounce per Gallon" is an Imperial unit for 'Density' expressed as $oz/gal$.
Ounce (avoirdupois) per Gallon (UK)
unit of the density according to the Imperial system of units
Pascal Litre per Second
Pascal Liter per Second
product out of the SI derived unit pascal and the unit litre divided by the SI base unit second
Pascal Cubic Metre per Second
Pascal Cubic Meter per Second
product out of the SI derived unit pascal and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
reciprocal of the traditional unit degree Fahrenheit
Reciprocal Kelvin
Per Kelvin Unit is a denominator unit with dimensions $/k$.
reciprocal megakelvin or megakelvin to the power minus one
0.000001-fold of reciprocal of the SI base unit kelvin
Psi Cubic Inch per Second
product of the composed unit for pressure (pound-force per square inch) and the composed unit for volume flow (cubic inch per second)
Psi Litre per Second
Psi Liter per Second
product of the composed unit for pressure (pound-force per square inch) and the composed unit for volume flow (litre per second)
PSI Cubic Metre per Second
PSI Cubic Meter per Second
product of the composed unit for pressure (pound-force per square inch) and the composed unit for volume flow (cubic metre per second)
Psi Cubic Yard per Second
product of the composed unit for pressure (pound-force per square inch) and the square inch) and the composed unit for volume flow (cubic yard per second)
1,000,000,000,000,000-fold of the SI derived unit joule divided by the SI base unit second
Picograms per millilitre
One 10**15 part of the SI standard unit of mass of the measurand per millilitre volume of matrix.
0.000000000001-fold of the SI derived unit joule divided by the SI base unit second
Picomoles per litre
Picomoles per cubic metre
Planck Power
The Planck energy divided by the Planck time is the Planck power $P_p $, equal to about $3.62831 \times 10^{52} W$. This is an extremely large unit; even gamma-ray bursts, the most luminous phenomena known, have output on the order of $1 \times 10^{45} W$, less than one ten-millionth of the Planck power.
$P_p = {\frac{ c^5}{G}}$, where $c$ is the speed of light in a vacuum, and $G$ is the gravitational constant.
Planck Volt
Tonne per Cubic Metre
Tonne per Cubic Meter
unit tonne divided by the power of the SI base unit metre with the exponent 3
Long Ton per Cubic Yard
The long ton per cubic yard density measurement unit is used to measure volume in cubic yards in order to estimate weight or mass in long tons.
Short Ton per Cubic Yard
The short ton per cubic yard density measurement unit is used to measure volume in cubic yards in order to estimate weight or mass in short tons.
Long Ton (UK) per Cubic Yard
unit of the density according the Imperial system of units
Short Ton (US) per Cubic Yard
Terawattstunde pro Jahr
Terawatt Hour per Year
Terawatt Heure par An
1,000,000,000,000-fold of the product of the SI derived unit watt and the unit hour divided by the unit year
Terawatt hour per year is a unit of energy per time (i.e. power) and denotes the energy (in terawatt hours) created or consumed during one year.
product of the SI derived unit watt and the unit hour divided by the SI base unit kilogram
Watt per Square Metre Kelvin
Watt per Square Meter Kelvin
The unit $\textit{Watt Per Square Meter Kelvin }$ ($W m^{-2} K^{-1}$) is a unit in the category of Thermal heat transfer coefficient. It is also known as $\textit{watt/square meter-kelvin}$. This unit is commonly used in the SI unit system. $\textit{Watt Per Square Meter Kelvin }$ has a dimension of $MT^{-1}Q^{-1}$ where $M$ is mass, $T$ is time, and $Q$ is temperature. This unit is the standard SI unit in this category.
Chilled Water Temperature Sensor
Measures the temperature of chilled water
Fan Coil Unit
Terminal device consisting of a heating and/or cooling heat exchanger or 'coil' and fan that is used to control the temperature in the space where it is installed
Floor
A level, typically representing a horizontal aggregation of spaces that are vertically bound. (referring to IFC)
Heating Ventilation Air Conditioning System
The equipment, distribution systems and terminals that provide, either collectively or individually, the processes of heating, ventilating or air conditioning to a building or portion of a building
Leaving Chilled Water
Mode Status
Indicates which mode a system, device or control loop is currently in
On Off Status
Indicates the on/off status of a control loop, relay or equipment
Proportional Band Parameter
Radiant Panel
A temperature-controlled surface that provides fifty percent (50%) or more of the design heat transfer by thermal radiation.
Relative Humidity Sensor
Measures the present state of absolute humidity relative to a maximum humidity given the same temperature
Temperature Setpoint
Sets temperature
Dry Volume
Dry measures are units of volume used to measure bulk commodities which are not gas or liquid. They are typically used in agriculture, agronomy, and commodity markets to measure grain, dried beans, and dried and fresh fruit; formerly also salt pork and fish. They are also used in fishing for clams, crabs, etc. and formerly for many other substances (for example coal, cement, lime) which were typically shipped and delivered in a standardized container such as a barrel. In the original metric system, the unit of dry volume was the stere, but this is not part of the modern metric system; the liter and the cubic meter ($m^{3}$) are now used. However, the stere is still widely used for firewood.
Applicable units are those of quantitykind:DryVolume
Electric Charge Density
$\rho = \frac{dQ}{dV}$, where $Q$ is electric charge and $V$ is Volume.
Applicable units are those of quantitykind:ElectricChargeDensity
Electric Charge Volume Density
In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions. More specifically: the linear, surface, or volume charge density is the amount of electric charge per unit length, surface area, or volume, respectively. The respective SI units are $C \cdot m^{-1}$, $C \cdot m^{-2}$ or $C \cdot m^{-3}$.
Applicable units are those of quantitykind:ElectricChargeVolumeDensity
Electric Current Phasor
"Electric Current Phasor" is a representation of current as a sinusoidal integral quantity using a complex quantity whose argument is equal to the initial phase and whose modulus is equal to the root-mean-square value. A phasor is a constant complex number, usually expressed in exponential form, representing the complex amplitude (magnitude and phase) of a sinusoidal function of time. Phasors are used by electrical engineers to simplify computations involving sinusoids, where they can often reduce a differential equation problem to an algebraic one.
When $i = \hat{I} \cos{(\omega t + \alpha)}$, where $i$ is the electric current, $\omega$ is angular frequence, $t$ is time, and $\alpha$ is initial phase, then $\underline{I} = Ie^{ja}$.
Applicable units are those of quantitykind:ElectricCurrentPhasor
Energy Density
Energy density is defined as energy per unit volume. The SI unit for energy density is the joule per cubic meter.
Force Per Area Time
Applicable units are those of quantitykind:ForcePerAreaTime
Ionic Strength
The "Ionic Strength" of a solution is a measure of the concentration of ions in that solution.
$I = \frac{1}{2} \sum z_i^2 b_i$, where the summation is carried out over all ions with charge number $z_i$ and molality $m_i$.
Applicable units are those of quantitykind:IonicStrength
Applicable units are those of quantitykind:LinearBitDensity
Linear Electric Current Density
"Linear Electric Linear Current Density" is the electric current per unit length. Electric current, $I$, through a curve $C$ is defined as $I = \int_C J _s \times e_n$, where $e_n$ is a unit vector perpendicular to the surface and line vector element, and $dr$ is the differential of position vector $r$.
$J_s = \rho_A v$, where $\rho_A$ is surface density of electric charge and $v$ is velocity.
Applicable units are those of quantitykind:LinearResistance
Permittivity
"Permittivity" is a physical quantity that describes how an electric field affects, and is affected by a dielectric medium, and is determined by the ability of a material to polarize in response to the field, and thereby reduce the total electric field inside the material. Permittivity is often a scalar valued quantity, however in the general case it is tensor-valued.
$\epsilon = \frac{D}{E}$, where $D$ is electric flux density and $E$ is electric field strength.
Applicable units are those of quantitykind:Permittivity
product of the SI base unit ampere and the unit hour divided by the power of the SI base unit metre with the exponent 2
An $\textit{AttoAmpere}$ is 0.000000000000000001-fold of the unit ampere
كولوم في المتر المربع
coulomb na metr čtvereční
Coulomb je Quadratmeter
coulomb per square metre
Coulomb per Square Meter
culombio por metro cuadrado
کولمب/کولن بر مترمربع
coulomb par mètre carré
कूलम्ब प्रति वर्ग मीटर
coulomb al metro quadrato
クーロン毎平方メートル
coulomb per meter persegi
kulomb na metr kwadratowy
coulomb por metro quadrado
coulomb pe metru pătrat
кулон на квадратный метр
coulomb bölü metre kare
库伦每平方米
Coulomb Per Square Meter ($C/m^2$) is a unit in the category of Electric charge surface density. It is also known as coulombs per square meter, coulomb per square metre, coulombs per square metre, coulomb/square meter, coulomb/square metre. This unit is commonly used in the SI unit system. Coulomb Per Square Meter (C/m2) has a dimension of $L^{-2}TI$ where $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Foot Pound Force per Hour
"Foot Pound Force per Hour" is an Imperial unit for 'Power' expressed as $ft-lbf/h$.
Foot Pound Force per Minute
"Foot Pound Force per Minute" is an Imperial unit for 'Power' expressed as $ft-lbf/min$.
Foot Pound Force per Second
"Foot Pound Force per Second" is an Imperial unit for 'Power' expressed as $ft-lbf/s$.
0.000000000000001-fold of the unit ampere
Gauss
Boiler Horsepower
"Boiler Horsepower" is a unit for 'Power' expressed as $hp_boiler$.
كاتال
катал
katal
Katal
κατάλ
کاتال
קטל
कटल
カタール
开特
Kilogram_force Metre per Second
Kilogram_force Meter per Second
product of the SI base unit metre and the unit kilogram-force according to the Anglo-American and Imperial system of units divided by the SI base unit second
Kiloohm
Pound Mole
The $\textit{Pound Mole}$ is a unit for $\textit{Mass Amount Of Substance}$, expressed as $lb-mol$.
millimoles per litre
The SI derived unit for amount-of-substance concentration is the mmo/L.
Reciprocal Day
Reciprocal Minute
A reciprocal unit of time for $\textit{reciprocal minute}$ or $\textit{inverse minute}$.
Reciprocal Month
Reciprocal millisecond
Reciprocal Week
Percent per day
Percent per hour
Percent per week
A rate of change in percent over a period of 7 days
Percent per Year
Parts-per-thousand per hour
Planck Frequency
1,000,000,000,000-fold of the unit ampere
Terahertz
1 000 000 000 000-fold of the SI derived unit hertz
1,000,000,000,000-fold of the SI derived unit hertz
1,000,000,000,000-fold of the SI derived unit joule divided by the SI base unit second
Air Flow Sensor
Measures the rate of flow of air
Cooling Temperature Setpoint
Sets temperature for cooling
ICT Equipment
Information and Communications Technology (ICT) equipment operates with a processor to process data or logic and create digital signals.
Leaving Hot Water
Temperature Deadband Setpoint
Sets the size of a deadband of temperature
Water Flow Setpoint
Sets the target flow rate of water
Water Temperature Setpoint
Sets temperature of water
Zone Air
air inside a defined zone (e.g., corridors).
Points to the external reference for this entity, which contains additional metadata/data not included in this graph.
Automatic
Baseboard
Basin
Diffuser
Enclosed
Exchanger
Face
Fault
Generation
Isolation
Leak
Loss
Luminance
Manual
Network
Open
Output
Photovoltaic
Radiant
Recovery
Reheat
Run
Smoke
Tint
Transfer
Underfloor
Variable
Velocity
Vertical
Video
Wash
Waste
Absorbed Dose
"Absorbed Dose" (also known as Total Ionizing Dose, TID) is a measure of the energy deposited in a medium by ionizing radiation. It is equal to the energy deposited per unit mass of medium, and so has the unit $J/kg$, which is given the special name Gray ($Gy$).
$D = \frac{d\bar{\varepsilon}}{dm}$, where $d\bar{\varepsilon}$ is the mean energy imparted by ionizing radiation to an element of irradiated matter with the mass $dm$.
Applicable units are those of quantitykind:AbsorbedDose
Note that the absorbed dose is not a good indicator of the likely biological effect. 1 Gy of alpha radiation would be much more biologically damaging than 1 Gy of photon radiation for example. Appropriate weighting factors can be applied reflecting the different relative biological effects to find the equivalent dose. The risk of stoctic effects due to radiation exposure can be quantified using the effective dose, which is a weighted average of the equivalent dose to each organ depending upon its radiosensitivity. When ionising radiation is used to treat cancer, the doctor will usually prescribe the radiotherapy treatment in Gy. When risk from ionising radiation is being discussed, a related unit, the Sievert is used.
Angular Momentum
$\textit{Angular Momentum}$, $\textit{Moment of Momentum}$, or $\textit{Rotational Momentum}$, is a vector quantity that represents the product of a body's rotational inertia and rotational velocity about a particular axis. The $\textit{Angular Momentum}$ of an object rotating about some reference point is the measure of the extent to which the object will continue to rotate about that point unless acted upon by an external torque. In particular, if a point mass rotates about an axis, then the angular momentum with respect to a point on the axis is related to the mass of the object, the velocity and the distance of the mass to the axis. While the motion associated with linear momentum has no absolute frame of reference, the rotation associated with angular momentum is sometimes spoken of as being measured relative to the fixed stars.
$L = I\omega$, where $I$ is the moment of inertia, and $\omega$ is the angular velocity.
Angular Momentum of an object rotating about some reference point is the measure of the extent to which the object will continue to rotate about that point unless acted upon by an external torque. In particular, if a point mass rotates about an axis, then the angular momentum with respect to a point on the axis is related to the mass of the object, the velocity and the distance of the mass to the axis. While the motion associated with linear momentum has no absolute frame of reference, the rotation associated with angular momentum is sometimes spoken of as being measured relative to the fixed stars. $\textit{Angular Momentum}$, $\textit{Moment of Momentum}, or $\textit{Rotational Momentum", is a vector quantity that represents the product of a body's rotational inertia and rotational velocity about a particular axis.
Boiling Point Temperature
A temperature that is the one at which a substance will change its physical state from a liquid to a gas. It is also the temperature where the liquid and gaseous forms of a pure substance can exist in equilibrium.
Applicable units are those of quantitykind:BoilingPoint
Catalytic Activity
An index of the actual or potential activity of a catalyst. The catalytic activity of an enzyme or an enzyme-containing preparation is defined as the property measured by the increase in the rate of conversion of a specified chemical reaction that the enzyme produces in a specified assay system. Catalytic activity is an extensive quantity and is a property of the enzyme, not of the reaction mixture; it is thus conceptually different from rate of conversion although measured by and equidimensional with it. The unit for catalytic activity is the $katal$; it may also be expressed in mol $s^{-1}$. Dimensions: $N T^{-1}$. Former terms such as catalytic ability, catalytic amount, and enzymic activity are no er recommended. Derived quantities are molar catalytic activity, specific catalytic activity, and catalytic activity concentration. Source(s): www.answers.com
Applicable units are those of quantitykind:CatalyticActivity
Data Rate
The frequency derived from the period of time required to transmit one bit. This represents the amount of data transferred per second by a communications channel or a computing or storage device. Data rate is measured in units of bits per second (written "b/s" or "bps"), bytes per second (Bps), or baud. When applied to data rate, the multiplier prefixes "kilo-", "mega-", "giga-", etc. (and their abbreviations, "k", "M", "G", etc.) always denote powers of 1000. For example, 64 kbps is 64,000 bits per second. This contrasts with units of storage which use different prefixes to denote multiplication by powers of 1024, for example 1 kibibit = 1024 bits.
Applicable units are those of quantitykind:DataRate
Applicable units are those of quantitykind:DatasetOfBits
Flash Point Temperature
A temperature that is the lowest one at which the vapors of a volatile material will ignite if exposed to an ignition source. It is frequently used to characterize fire hazards and distinguish different flammable fuels.
Applicable units are those of quantitykind:FlashPoint
Linear Thermal Expansion
When the temperature of a substance changes, the energy that is stored in the intermolecular bonds between atoms changes. When the stored energy increases, so does the length of the molecular bonds. As a result, solids typically expand in response to heating and contract on cooling; this dimensional response to temperature change is expressed by its coefficient of thermal expansion. Different coefficients of thermal expansion can be defined for a substance depending on whether the expansion is measured by: linear thermal expansion, area thermal expansion, or volumetric thermal expansion.
Applicable units are those of quantitykind:LinearThermalExpansion
Magnetomotive Force
$\text{Magnetomotive Force}$, also referred to as ($mmf$), is the ability of an electric circuit to produce magnetic flux. Just as the ability of a battery to produce electric current is called its electromotive force or emf, mmf is taken as the work required to move a unit magnet pole from any point through any path which links the electric circuit back the same point in the presence of the magnetic force produced by the electric current in the circuit. $\text{Magnetomotive Force}$ is the scalar line integral of the magnetic field strength along a closed path.
$F_m = \oint \mathbf{H} \cdot dr$, where $\mathbf{H}$ is magnetic field strength and $r$ is position vector along a given curve $C$ from point $a$ to point $b$.
Applicable units are those of quantitykind:MagnetomotiveForce
Mass Concentration
The "Mass Concentration" of substance B is defined as the mass of a constituent divided by the volume of the mixture .
$\rho_B = \frac{m_B}{V}$, where $m_B$ is the mass of substance $B$ and $V$ is the volume.
Applicable units are those of quantitykind:MassConcentration
Melting Point Temperature
A temperature that is the one at which a substance will change its physical state from a solid to a liquid. It is also the temperature where the solid and liquid forms of a pure substance can exist in equilibrium.
Applicable units are those of quantitykind:MeltingPoint
Molar Flow Rate
Molar Flow Rate is a measure of the amount of substance (the number of molecules) that passes through a given area perpendicular to the flow in a given time. Typically this area is constrained, for example a section through a pipe, but it could also apply to an open flow.
Applicable units are those of quantitykind:MolarFlowRate
عزم القصور الذاتي
Moment setrvačnosti
Massenträgheitsmoment
moment of inertia
momento de inercia
گشتاور لختی
moment d'inertie
जड़त्वाघूर्ण
momento di inerzia
慣性モーメント
Momen inersia
Moment bezwładności
momento de inércia
Moment de inerție
Момент инерции
Eylemsizlik momenti
轉動慣量
$I_Q = \int r^2_Q dm$, where $r_Q$ is the radial distance from a $Q-axis$ and $m$ is mass.
Photosynthetic Photon Flux Density
Photosynthetically Active Radiation are the wavelengths of light within the visible range of 400 to 700 nanometers (nm) that are critical for photosynthesis. PPFD measures the amount of PAR light (photons) that arrive at the plant’s surface each second. The PPFD is measured at various distances with a Full-spectrum Quantum Sensor, also known as a PAR meter. Natural sunlight has a PAR value of 900-1500μMol/m2/s when the sun is directly overhead. For a grow light to be effective, it should have PAR values of 500-1500 μMol/m2/s.
Applicable units are those of quantitykind:PhotosyntheticPhotonFluxDensity
RotationalFrequency
A measure of the number of cycles that an item revolves per time period.
IfcRotationalFrequencyMeasure is a measure of the number of cycles that an item revolves in unit time. Usually measured in cycles/s.
Applicable units are those of quantitykind:RotationalFrequency
Applicable units are those of quantitykind:RotationalVelocity
Soil Adsorption Coefficient
A specific volume that is the ratio of the amount of substance adsorbed per unit weight of organic carbon in the soil or sediment to the concentration of the chemical in aqueous solution at equilibrium.
Applicable units are those of quantitykind:SoilAdsorptionCoefficient
Thermal Conductance
This quantity is also called "Heat Transfer Coefficient".
$G = 1/R$, where $R$ is "Thermal Resistance"
Applicable units are those of quantitykind:ThermalConductance
Thermal Expansion Coefficient
The "Thermal Expansion Coefficient" is a measure of the thermal expansion coefficient of a material, which expresses its elongation (as a ratio) per temperature difference. It is usually measured in 1/K. A positive elongation per (positive) rise of temperature is expressed by a positive value.
Applicable units are those of quantitykind:ThermalExpansionCoefficient
ampérů na metr
Ampere je Meter
ampere per metre
Ampere per Meter
amperio por metro
آمپر بر متر
ampère par mètre
प्रति मीटर एम्पीयर
ampere al metro
アンペア毎メートル
ampere per meter
amper na metr
ampere por metro
ampere pe metru
ампер на метр
amper na meter
amper bölü metre
安培每米
is the SI unit of magnetic field strength. One ampere per meter is equal to $\pi/250$ oersteds ($12.566\, 371\,millioersteds$) in CGS units. The ampere per meter is also the SI unit of "magnetization" in the sense of magnetic dipole moment per unit volume; in this context $1 A/m = 0.001\,emu\,per\,cubic\,centimeter$.
Barrel (UK Petroleum)
unit of the volume for crude oil according to the Imperial system of units
Bushel (US Dry)
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units
Centipoise
$\textit{Centipoise}$ is a C.G.S System unit for 'Dynamic Viscosity' expressed as $cP$.
0.01-fold of the CGS unit of the dynamic viscosity poise
Gill (UK)
unit of the volume for fluids according to the Imperial system of units (1/32 Imperial Gallon)
Gill (US)
unit of the volume according the Anglo-American system of units (1/32 US Gallon)
Gigawatt
1,000,000,000-fold of the SI derived unit watt
1 000 000 000-fold of the SI derived unit watt
كيلوغرام لكل متر مكعب
килограм на кубичен метър
kilogram na metr krychlový
Kilogramm je Kubikmeter
χιλιόγραμμο ανά κυβικό μέτρο
kilogram per cubic metre
kilogram per cubic meter
kilogramo por metro cúbico
کیلوگرم بر متر مکعب
kilogramme par mètre cube
किलोग्राम प्रति घन मीटर
chilogrammo al metro cubo
キログラム毎立方メートル
kilogram per meter kubik
kilogram na metr sześcienny
quilograma por metro cúbico
kilogram pe metru cub
килограмм на кубический метр
kilogram na kubični meter
kilogram bölü metre küp
千克每立方米
Kilogram per cubic metre is an SI derived unit of density, defined by mass in kilograms divided by volume in cubic metres. The official SI symbolic abbreviation is $kg \cdot m^{-3}$, or equivalently either $kg/m^3$.
Kilogram per cubic metre is an SI derived unit of density, defined by mass in kilograms divided by volume in cubic metres. The official SI symbolic abbreviation is kg . m^-3, or equivalently either kg/m^3.
لومن
лумен
lumen
Lumen
λούμεν
לומן
ल्यूमैन
ルーメン
lümen
流明
The SI unit for measuring the flux of light being produced by a light source or received by a surface. The intensity of a light source is measured in candelas. One lumen represents the total flux of light emitted, equal to the intensity in candelas multiplied by the solid angle in steradians into which the light is emitted. A full sphere has a solid angle of $4\cdot\pi$ steradians. A light source that uniformly radiates one candela in all directions has a total luminous flux of $1 cd\cdot 4 \pi sr = 4 \pi cd \cdot sr \approx 12.57 \; \text{lumens}$. "Lumen" is a Latin word for light.
Microlitre
Microwatt
0.000001-fold of the SI derived unit watt
Number per microlitre
Number per millilitre
Number per milliliter
Count of an entity or phenomenon occurrence in one thousandth of the SI unit of volume (litre).
Number per nanolitre
Number per nanoliter
Number per picoliter
0.000000001-fold of the SI derived unit volt
Nanowatt
0.000000001-fold of the SI derived unit watt
Fluid Ounce (UK)
$\textit{Imperial Ounce}$ is an Imperial unit for 'Liquid Volume' expressed as $oz$.
unit of the volume for fluids according to the Imperial system of units
Reciprocal Hour
A reciprocal unit of time for $\textit{reciprocal hour}$ or "inverse hour".
Reciprocal Year
Peck (UK)
unit of the volume according to the Imperial system of units
0.000000000001-fold of the SI derived unit volt
Sample per second
The number of discrete samples of some thing per second.
زيفرت
сиверт
sievert
Sievert
σίβερτ
سیورت
זיוורט
सैवर्ट
シーベルト
sievertum
siwert
зиверт
西弗
Although the sievert has the same dimensions as the gray (i.e. joules per kilogram), it measures a different quantity. To avoid any risk of confusion between the absorbed dose and the equivalent dose, the corresponding special units, namely the gray instead of the joule per kilogram for absorbed dose and the sievert instead of the joule per kilogram for the dose equivalent, should be used.
1,000,000,000,000-fold of the SI derived unit volt
Abvolt
A unit of electrical potential equal to one hundred millionth of a volt ($10^{-8}\,volts$), used in the centimeter-gram-second (CGS) system of units. One abV is the potential difference that exists between two points when the work done to transfer one abcoulomb of charge between them equals: $1\,erg\cdot\,1\,abV\,=\,10\,nV$.
Statvolt
"statvolt" is a unit of voltage and electrical potential used in the cgs system of units. The conversion to the SI system is $1 statvolt = 299.792458 volts$. The conversion factor 299.792458 is simply the numerical value of the speed of light in m/s divided by 106. The statvolt is also defined in the cgs system as $1 erg / esu$. It is a useful unit for electromagnetism because one statvolt per centimetre is equal in magnitude to one gauss. Thus, for example, an electric field of one statvolt/cm has the same energy density as a magnetic field of one gauss. Likewise, a plane wave propagating in a vacuum has perpendicular electric and magnetic fields such that for every gauss of magnetic field intensity there is one statvolt/cm of electric field intensity. The abvolt is another option for a unit of voltage in the cgs system.
CO2 Concentration
The concentration of carbon dioxide in a medium
Condenser Water
Water used used to remove heat through condensation
Damper
Element inserted into an air-distribution system or element of an air-distribution system permitting modification of the air resistance of the system and consequently changing the airflow rate or shutting off the airflow.
Effective Air Temperature Setpoint
Heating Temperature Setpoint
Sets temperature for heating
Occupied Air Temperature Setpoint
Position
The fraction of the full range of motion
Sensor Equipment
A piece of equipment for sensing some physical properties
Speed
Static Pressure Setpoint
Sets static pressure
Temperature Sensor
Measures temperature: the physical property of matter that quantitatively expresses the common notions of hot and cold
Unoccupied Air Temperature Setpoint
Sets temperature of air when unoccupied
Water Flow Sensor
Measures the rate of flow of water
Area per Time
"Count" is the value of a count of items.
Water Solubility
An amount of substance per unit volume that is the concentration of a saturated solution expressed as the ratio of the solute concentration over the volume of water. A substance's solubility fundamentally depends on several physical and chemical properties of the solution as well as the environment it is in.
Applicable units are those of quantitykind:Solubility_Water
British thermal unit (international table) per square inch second
unit of the surface heat flux according to the Imperial system of units
British thermal unit (thermochemical) per square foot hour
British thermal unit (thermochemical) per square foot minute
British thermal unit (thermochemical) per square foot second
calorie (thermochemical) per square centimetre minute
calorie (thermochemical) per square centimetre second
Degree per Hour
"Degree per Hour" is an Imperial unit for 'Angular Velocity' expressed as $deg/h$.
Degree per Minute
A unit of measure for the rate of change of plane angle, $d\omega / dt$, in durations of one minute.The vector $\omega$ is directed along the axis of rotation in the direction for which the rotation is clockwise.
Degree per Second
"Degree per Second" is an Imperial unit for 'Angular Velocity' expressed as $deg/s$.
Decibel
A customary logarithmic measure most commonly used (in various ways) for measuring sound.Sound is measured on a logarithmic scale. Informally, if one sound is $1\,bel$ (10 decibels) "louder" than another, this means the louder sound is 10 times louder than the fainter one. A difference of 20 decibels corresponds to an increase of 10 x 10 or 100 times in intensity. The beginning of the scale, 0 decibels, can be set in different ways, depending on exactly the aspect of sound being measured. For sound intensity (the power of the sound waves per unit of area) $0\,decibel$ is equal to $1\,picoWatts\,per\,Metre\,Squared$. This corresponds approximately to the faintest sound that can be detected by a person who has good hearing. For sound pressure (the pressure exerted by the sound waves) 0 decibels equals $20\,micropascals\,RMS$, and for sound power $0\,decibels$ sometimes equals $1\,picoWatt$. In all cases, one decibel equals $\approx\,0.115129\,neper$.
Decilitre
Erg per Square Centimetre Second
Erg per Square Centimeter Second
"Erg per Square Centimeter Second" is a C.G.S System unit for 'Power Per Area' expressed as $erg/(cm^{2}-s)$.
Foot Pound Force per Square Foot Second
"Foot Pound Force per Square Foot Second" is an Imperial unit for 'Power Per Area' expressed as $ft \cdot lbf/(ft^2 \cdot s)$.
1,000,000,000-fold of the SI derived unit volt
Kilocalorie per Square Centimetre Minute
Kilocalorie per Square Centimeter Minute
"Kilocalorie per Square Centimeter Minute" is a unit for 'Power Per Area' expressed as $kcal/(cm^{2}-min)$.
Kilocalorie per Square Centimetre Second
Kilocalorie per Square Centimeter Second
"Kilocalorie per Square Centimeter Second" is a unit for 'Power Per Area' expressed as $kcal/(cm^{2}-s)$.
Kilomole
Kilowatt Per Square Metre
Kilowatt Per Square Meter
1 000-fold of the SI derived unit watt divided by the square of the SI base unit metre
product of the SI base unit metre and the SI derived unit pascal divided by the SI base unit second
MegaW
Microwatt per Square Metre
Microwatt per Square Meter
0.000001-fold of the SI derived unit watt divided by the power of the SI base unit metre with the exponent 2
Milliwatt per Square Metre
Milliwatt per Square Meter
0.001-fold of the SI derived unit weber divided by the power of the SI base unit metre with the exponent 2
Number per hour
Number per litre
Number per cubic metre
Number per cubic millimeter
Counts per second
Number per Year
"Number per Year" is a unit for 'Frequency' expressed as $\#/yr$.
Pint (UK)
unit of the volume (both for fluids and for dry measures) according to the Imperial system of units
Picowatt
0.000000000001-fold of the SI derived unit watt
Picowatt per Square Metre
Picowatt per Square Meter
0.000000000001-fold of the SI derived unit watt divided by the power of the SI base unit metre with the exponent 2
Quart (UK)
Radian per Hour
"Radian per Hour" is a unit for 'Angular Velocity' expressed as $rad/h$.
Radian per Minute
Radian Per Minute (rad/min) is a unit in the category of Angular velocity. It is also known as radians per minute, radian/minute. Radian Per Minute (rad/min) has a dimension of aT-1 where $T$ is time. It can be converted to the corresponding standard SI unit rad/s by multiplying its value by a factor of 0.0166666666667.
راديان في الثانية
radián za sekundu
Radian je Sekunde
radian per second
radián por segundo
رادیان بر ثانیه
radian par seconde
radiante al secondo
ラジアン毎秒
radian per saat
radian na sekundę
radiano por segundo
radian pe secundă
радиан в секунду
radian na sekundo
radyan bölü saniye
弧度每秒
"Radian per Second" is the SI unit of rotational speed (angular velocity), and, also the unit of angular frequency. The radian per second is defined as the change in the orientation of an object, in radians, every second.
Terawatt
1,000,000,000,000-fold of the SI derived unit watt
Watt per Square Centimetre
Watt per Square Centimeter
Watt Per Square Centimeter is a unit of heat flux or thermal flux, the rate of heat energy transfer through a given surface.
Watt per Square Foot
Watt Per Square Foot is a unit of heat flux or thermal flux, the rate of heat energy transfer through a given surface.
Watt per Square Inch
Watt Per Square Inch is a unit of heat flux or thermal flux, the rate of heat energy transfer through a given surface.
Air Quality Sensor
A sensor which provides a measure of air quality
Air Temperature Sensor
Measures the temperature of air
Differential Temperature
Entering Water
Water that is entering a piece of equipment or system
Max Limit
A parameter that places an upper bound on the range of permitted values of a Setpoint.
Min Limit
A parameter that places a lower bound on the range of permitted values of a Setpoint.
Average
Booster
Circulator
Detection
Fixed
Heating
Media
Outdoor
Preheat
Relief
Stack
Surface
Target
includes
Capacitance
"Capacitance" is the ability of a body to hold an electrical charge; it is quantified as the amount of electric charge stored for a given electric potential. Capacitance is a scalar-valued quantity.
$C = Q/U$, where $Q$ is electric charge and $V$ is voltage.
Applicable units are those of quantitykind:Capacitance
Conductance
$\textit{Conductance}$, for a resistive two-terminal element or two-terminal circuit with terminals A and B, quotient of the electric current i in the element or circuit by the voltage $u_{AB}$ between the terminals: $G = \frac{1}{R}$, where the electric current is taken as positive if its direction is from A to B and negative in the opposite case. The conductance of an element or circuit is the inverse of its resistance.
$G = Re\underline{Y}$, where $\underline{Y}$ is admittance. Alternatively: $G = \frac{1}{R}$, where $R$ is resistance.
Applicable units are those of quantitykind:Conductance
Electric Charge Per Mass
"Electric Charge Per Mass" is the charge associated with a specific mass of a substance. In the SI and ISO systems this is $1 kg$.
كثافة التيار
Hustota elektrického proudu
elektrische Stromdichte
electric current density
densidad de corriente
چگالی جریان الکتریکی
densité de courant
धारा घनत्व
densità di corrente elettrica
電流密度
Ketumpatan arus elektrik
Gęstość prądu elektrycznego
densidade de corrente elétrica
Densitate de curent
плотность тока
gostota električnega toka
Akım yoğunluğu
电流密度
"Electric Current Density" is a measure of the density of flow of electric charge; it is the electric current per unit area of cross section. Electric current density is a vector-valued quantity. Electric current, $I$, through a surface $S$ is defined as $I = \int_S J \cdot e_n dA$, where $e_ndA$ is the vector surface element.
$J = \rho v$, where $\rho$ is electric current density and $v$ is volume.
Applicable units are those of quantitykind:ElectricCurrentDensity
areic electric current
keluasan arus elektrik
محتوى حراري
entalpie
Enthalpie
enthalpy
entalpía
آنتالپی
enthalpie
पूर्ण ऊष्मा
entalpia
エンタルピー
Entalpi
Entalpie
энтальпия
entalpija
In thermodynamics, $\textit{enthalpy}$ is the sum of the internal energy $U$ and the product of pressure $p$ and volume $V$ of a system. The characteristic function (also known as thermodynamic potential) $\textit{enthalpy}$ used to be called $\textit{heat content}$, which is why it is conventionally indicated by $H$. The specific enthalpy of a working mass is a property of that mass used in thermodynamics, defined as $h=u+p \cdot v$, where $u$ is the specific internal energy, $p$ is the pressure, and $v$ is specific volume. In other words, $h = H / m$ where $m$ is the mass of the system. The SI unit for $\textit{Specific Enthalpy}$ is $\textit{joules per kilogram}$
$H = U + pV$, where $U$ is internal energy, $p$ is pressure and $V$ is volume.
Expansion Ratio
المحاثة (التحريض)
Индуктивност
Indukčnost
Induktivität
inductance
inductancia
القاوری
Inductance électrique
השראות
प्रेरकत्व
induktivitás
induttanza
インダクタンス・誘導係数
inductantia
Indukstans
indukcyjność
indutância
inductanță
Индуктивность
induktivnost
İndüktans
电感
"Inductance" is an electromagentic quantity that characterizes a circuit's resistance to any change of electric current; a change in the electric current through induces an opposing electromotive force (EMF). Quantitatively, inductance is proportional to the magnetic flux per unit of electric current.
$L =\frac{\Psi}{I}$, where $I$ is an electric current in a thin conducting loop, and $\Psi$ is the linked flux caused by that electric current.
inductivity
Induktiviti
Inverse Volume
Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle.
$L_v = \frac{dI_v}{dA}$, where $dI_v$ is the luminous intensity of an element of the surface with the area $dA$ of the orthogonal projection of this element on a plane perpendicular to the given direction.
Applicable units are those of quantitykind:Luminance
التدفق المغناطيسي
Магнитен поток
Magnetický tok
magnetischer Flux
magnetic flux
flujo magnético
شار مغناطیسی
Flux d'induction magnétique
שטף מגנטי
चुम्बकीय बहाव
mágneses fluxus
flusso magnetico
磁束
fluxus magneticus
Fluks magnet
strumień magnetyczny
fluxo magnético
flux de inducție magnetică
Магнитный поток
magnetni pretok
manyetik akı
磁通量
"Magnetic Flux" is the product of the average magnetic field times the perpendicular area that it penetrates.
$\Phi = \int_S B \cdot e_n d A$, over a surface $S$, where $B$ is magnetic flux density and $e_n dA$ is the vector surface element.
Mass per Time
Applicable units are those of quantitykind:MassPerTime
Pressure Ratio
Applicable units are those of quantitykind:PressureRatio
Volume Fraction
"Volume Fraction" is the volume of a constituent divided by the volume of all constituents of the mixture prior to mixing. Volume fraction is also called volume concentration in ideal solutions where the volumes of the constituents are additive (the volume of the solution is equal to the sum of the volumes of its ingredients).
$\varphi_B = \frac{x_B V_{m,B}^*}{\sum x_i V_{m,i}^*}$, where $V_{m,i}^*$ is the molar volume of the pure substances $i$ at the same temperature and pressure, $x_i$ denotes the amount-of-substance fraction of substance $i$, and $\sum$ denotes summation over all substances $i$.
Applicable units are those of quantitykind:VolumeFraction
British thermal unit (international table) per square foot hour
British thermal unit (international table) per square foot second
BTU per Hour Square Foot
$\textit{BTU per Hour Square Foot}$ is an Imperial unit for 'Power Per Area' expressed as $Btu/(h-ft^2)$.
BTU per Second
${\bf BTU \, per \, Second}$ is an Imperial unit for 'Heat Flow Rate' expressed as $Btu/s$.
BTU per Second Square Foot
$\textit{BTU per Second Square Foot}$ is an Imperial unit for 'Power Per Area' expressed as $Btu/(s\cdot ft^2)$.
Gigahertz
The hertz (symbol Hz) is the SI unit of frequency defined as the number of cycles per second of a periodic phenomenon. A GigaHertz is $10^{9} hz$.
Joules per square centimetre day
Radiant energy per 10^-4 SI unit area over a period of one day.
Kilo British Thermal Unit (International Definition) per Hour
Kilocalorie per Minute
A $\textit{Kilocalorie per Minute}$ is a unit for $\textit{Heat Flow Rate}$ and $\textit{Power}$, expressed as $kcal/min$.
Kilocalorie per Second
A $\textit{Kilocalorie per Second}$ is a unit for $\textit{Heat Flow Rate}$ and $\textit{Power}$, expressed as $kcal/s$.
Kilohertz
"Kilohertz" is a C.G.S System unit for 'Frequency' expressed as $KHz$.
Mega British Thermal Unit (International Definition) per Hour
0.000000001-fold of the SI derived unit watt divided by the SI base unit metre to the power two
Reciprocal Kilometre
Reciprocal Kilometer
Per Kilometer Unit is a denominator unit with dimensions $/km$.
Reciprocal Micrometre
Reciprocal Micrometer
Per Micrometer Unit is a denominator unit with dimensions $/microm$.
Reciprocal Millimetre
Reciprocal Millimeter
Per Millimeter Unit is a denominator unit with dimensions $/mm$.
Reciprocal Nanometre
Reciprocal Nanometer
Per Nanometer Unit is a denominator unit with dimensions $/nm$.
Reciprocal Picometre
Reciprocal Picometer
Per Picoometer Unit is a denominator unit with dimensions $/pm$.
PicoMole
US Liquid Quart
"US Liquid Quart" is a unit for 'Liquid Volume' expressed as $qt$.
Therm US per Hour
$\textit{Therm}$ (symbol $thm$) is a non-SI unit of heat energy. It was defined in the United States in 1968 as the energy equivalent of burning 100 cubic feet of natural gas at standard temperature and pressure. Industrial processes in the U.S. use therm/h unit most often in the power, steam generation, heating, and air conditioning industries.
Electrical Equipment
Enable Command
Commands that enable functionality
Humidity Setpoint
Sets humidity
Leaving Water
Water that is leaving a piece of equipment or system
Terminal Unit
A device that regulates the volumetric flow rate and/or the temperature of the controlled medium.
Admittance
"Admittance" is a measure of how easily a circuit or device will allow a current to flow. It is defined as the inverse of the impedance ($Z$).
$Y = \frac{1}{Z}$, where $Z$ is impedance.
Applicable units are those of quantitykind:Admittance
سرعة زاوية
Úhlová rychlost
Winkelgeschwindigkeit
angular velocity
velocidad angular
سرعت زاویه‌ای
vitesse angulaire
कोणीय वेग
velocità angolare
角速度
Halaju bersudut
Prędkość kątowa
velocidade angular
Viteză unghiulară
Угловая скорость
kotna hitrost
Açısal hız
Angular Velocity refers to how fast an object rotates or revolves relative to another point.
The change of angle per unit time; specifically, in celestial mechanics, the change in angle of the radius vector per unit time.
angular speed
kelajuan bersudut
Hydraulic Permeability
Permeability is a property of porous materials that is an indication of the ability for fluids (gas or liquid) to flow through them. Fluids can more easily flow through a material with high permeability than one with low permeability. The permeability of a medium is related to the porosity, but also to the shapes of the pores in the medium and their level of connectedness.
Applicable units are those of quantitykind:HydraulicPermeability
Fluid Permeability
Mass per Length
Linear density, linear mass density or linear mass is a measure of mass per unit of length, and it is a characteristic of strings or other one-dimensional objects. The SI unit of linear density is the kilogram per metre ($kg/m$).
Applicable units are those of quantitykind:MassPerLength
Resistivity
"Resistivity" is the inverse of the conductivity when this inverse exists.
$\rho = \frac{1}{\sigma}$, if it exists, where $\sigma$ is conductivity.
Applicable units are those of quantitykind:Resistivity
Specific Entropy
"Specific Entropy" is entropy per unit of mass.
$s = S/m$, where $S$ is entropy and $m$ is mass.
Applicable units are those of quantitykind:SpecificEntropy
BTU per Hour
The $\text{BTU per Hour}$ is the amount of energy that is being produced or consumed per hour.
قنديلة
кандела
kandela
Candela
καντέλα
candela
کاندلا
קנדלה
कॅन्डेला
カンデラ
candelă
坎德拉
$\textit{Candela}$ is a unit for 'Luminous Intensity' expressed as $cd$. The candela is the SI base unit of luminous intensity; that is, power emitted by a light source in a particular direction, weighted by the luminosity function (a standardized model of the sensitivity of the human eye to different wavelengths, also known as the luminous efficiency function). A common candle emits light with a luminous intensity of roughly one candela.
جراي; غراي
грей
gray
Gray
γκρέι
گری
גריי
ग्रेय
グレイ
graium
grej
грэй
戈瑞
The SI unit of radiation dose. Radiation carries energy, and when it is absorbed by matter the matter receives this energy. The dose is the amount of energy deposited per unit of mass. One gray is defined to be the dose of one joule of energy absorbed per kilogram of matter, or 100 rad. The unit is named for the British physician L. Harold Gray (1905-1965), an authority on the use of radiation in the treatment of cancer.
Megavolt
Microvolt
0.000001-fold of the SI derived unit volt
MilliAmpere
Millimole
ويبر; فيبر
вебер
weber
Weber
βέμπερ
وبر
ובר
वैबर
ウェーバ
weberium
韦伯
The SI unit of magnetic flux. "Flux" is the rate (per unit of time) at which something crosses a surface perpendicular to the flow. The weber is a large unit, equal to $10^{8}$ maxwells, and practical fluxes are usually fractions of one weber. The weber is the magnetic flux which, linking a circuit of one turn, would produce in it an electromotive force of 1 volt if it were reduced to zero at a uniform rate in 1 second. In SI base units, the dimensions of the weber are $(kg \cdot m^2)/(s^2 \cdot A)$. The weber is commonly expressed in terms of other derived units as the Tesla-square meter ($T \cdot m^2$), volt-seconds ($V \cdot s$), or joules per ampere ($J/A$).
Exhaust Air
air that must be removed from a space due to contaminants, regardless of pressurization
Limit
A parameter that places an upper or lower bound on the range of permitted values of another point
Supply Air Flow Setpoint
Sets supply air flow rate
Supply Air Temperature Setpoint
Temperature setpoint for supply air
System
A System is a combination of equipment and auxiliary devices (e.g., controls, accessories, interconnecting means, and termi­nal elements) by which energy is transformed so it performs a specific function such as HVAC, service water heating, or lighting. (ASHRAE Dictionary).
Control
Distribution
HVAC
Lockout
Plenum
Shade
Solar
Activity
$\textit{Activity}$ is the number of decays per unit time of a radioactive sample, the term used to characterise the number of nuclei which disintegrate in a radioactive substance per unit time. Activity is usually measured in Becquerels ($Bq$), where 1 $Bq$ is 1 disintegration per second, in honor of the scientist Henri Becquerel.
$A = Z + N$, where $Z$ is the atomic number and $N$ is the neutron number. Variation $dN$ of spontaneous number of nuclei $N$ in a particular energy state, in a sample of radionuclide, due to spontaneous nuclear transitions from this state during an infinitesimal time interval, divided by its duration $dt$, thus $A = -\frac{dN}{dt}$.
Applicable units are those of quantitykind:Activity
تردد زاوى
Kreisfrequenz
angular frequency
pulsación
Pulsación
frequenza angolare
角振動数
pulsacja
frequência angular
角频率
"Angular frequency", symbol $\omega$ (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate. Angular frequency (or angular speed) is the magnitude of the vector quantity angular velocity.
$\omega = 2\pi f$, where $f$ is frequency.
نابض
Pulsatanzpulsation
pulsatance
pulsazione
角周波数
pulsação
Liquid Volume
Liquid volume is the volume of a given amount of liquid, that is, the amount of space a liquid takes up. There are a number of different units used to measure liquid volume, but most of them fall under either the metric system of measurement or the Imperial system of measurement.
Applicable units are those of quantitykind:LiquidVolume
Resistance
The electrical resistance of an object is a measure of its opposition to the passage of a steady electric current.
$R = \frac{u}{i}$, where $u$ is instantaneous voltage and $i$ is instantaneous electric current.
Applicable units are those of quantitykind:Resistance
درجة الحرارة المطلقة
Термодинамична температура
Termodynamická teplota
thermodynamische Temperatur
Απόλυτη
thermodynamic temperature
دمای ترمودینامیکی
température thermodynamique
טמפרטורה מוחלטת
ऊष्मगतिकीय तापमान
abszolút hőmérséklet
temperatura termodinamica
熱力学温度
temperatura thermodynamica absoluta
Suhu termodinamik
temperatură termodinamică
Термодинамическая температура
termodinamik sıcaklık
热力学温度
Thermodynamic temperature is the absolute measure of temperature and is one of the principal parameters of thermodynamics. Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. In thermodynamics, in a system of which the entropy is considered as an independent externally controlled variable, absolute, or thermodynamic temperature is defined as the derivative of the internal energy with respect to the entropy. This is a base quantity in the International System of Quantities, ISQ, on which the International System of Units, SI, is based.
Θερμοδυναμική Θερμοκρασία
temperatura assoluta
Attosecond
An $\textit{AttoSecond}$ is 0.000000000000000001-fold of the SI base unit $second$.
0.000000000000000001-fold of the SI base unit second
Centipoise per Bar
0.01-fold of the CGS unit of the dynamic viscosity poise divided by the unit of the pressure bar
Sidereal Day
The length of time which passes between a given fixed star in the sky crossing a given projected meridian (line of longitude). The sidereal day is $23 h 56 m 4.1 s$, slightly shorter than the solar day because the Earth 's orbital motion about the Sun means the Earth has to rotate slightly more than one turn with respect to the "fixed" stars in order to reach the same Earth-Sun orientation. Another way of thinking about the difference is that it amounts to $1/365.2425^{th}$ of a day per day, since even if the Earth did not spin on its axis at all, the Sun would appear to make one rotation around the Earth as the Earth completed a single orbit (which takes one year).
decisecond
"Decisecond" is an SI unit for 'Time' expressed as $ds$.
فاراد
фарад
farad
Farad
φαράντ
faradio
פאראד
फैराड
ファラド
faradium
фарада
法拉
The SI unit of electric capacitance. Very early in the study of electricity scientists discovered that a pair of conductors separated by an insulator can store a much larger charge than an isolated conductor can store. The better the insulator, the larger the charge that the conductors can hold. This property of a circuit is called capacitance, and it is measured in farads. One farad is defined as the ability to store one coulomb of charge per volt of potential difference between the two conductors. This is a natural definition, but the unit it defines is very large. In practical circuits, capacitance is often measured in microfarads, nanofarads, or sometimes even in picofarads (10-12 farad, or trillionths of a farad). The unit is named for the British physicist Michael Faraday (1791-1867), who was known for his work in electricity and electrochemistry.
Femtosecond
0.000000000000001-fold of the SI base unit second
هنري
хенри
henry
Henry
χένρι
henrio
هنری
הנרי
हेनरी
ヘンリー
henrium
henr
генри
亨利
The unit $\textit{Henry}$ is the SI unit of electric inductance. A changing magnetic field induces an electric current in a loop of wire (or in a coil of many loops) located in the field. Although the induced voltage depends only on the rate at which the magnetic flux changes, measured in webers per second, the amount of the current depends also on the physical properties of the coil. A coil with an inductance of one henry requires a flux of one weber for each ampere of induced current. If, on the other hand, it is the current which changes, then the induced field will generate a potential difference within the coil: if the inductance is one henry a current change of one ampere per second generates a potential difference of one volt. The henry is a large unit; inductances in practical circuits are measured in millihenrys (mH) or microhenrys (u03bc H). The unit is named for the American physicist Joseph Henry (1797-1878), one of several scientists who discovered independently how magnetic fields can be used to generate alternating currents. A $\textit{Henry}$ is defined as: $$\text{H} \; \equiv \; \text{henry}\; \equiv\; \frac{\text{Wb}}{\text{A}}\; \equiv\; \frac{\text{weber}}{\text{amp}}\; \equiv\ \frac{\text{V}\cdot\text{s}}{\text{A}}\; \equiv\; \frac{\text{volt} \cdot \text{second}}{\text{amp}}\; \equiv\ \Omega\cdot\text{s}\; \equiv\; \text{ohm.second}$$
Henry per Kiloohm
SI derived unit henry divided by the 1 000-fold of the SI derived unit ohm
Henry per Ohm
SI derived unit henry divided by the SI derived unit ohm
Sidereal Hour
Sidereal time is a time-keeping system astronomers use to keep track of the direction to point their telescopes to view a given star in the night sky. A mean sidereal day is about 23 h 56 m 4.1 s in length. However, due to variations in the rotation rate of the Earth, the rate of an ideal sidereal clock deviates from any simple multiple of a civil clock. In practice, the difference is kept track of by the difference UTC-UT1, which is measured by radio telescopes and kept on file and available to the public at the IERS and at the United States Naval Observatory. A Sidereal Hour is $1/24^{th}$ of a Sidereal Day. A mean sidereal day is 23 hours, 56 minutes, 4.0916 seconds (23.9344699 hours or 0.99726958 mean solar days), the time it takes Earth to make one rotation relative to the vernal equinox. (Due to nutation, an actual sidereal day is not quite so constant.) The vernal equinox itself precesses slowly westward relative to the fixed stars, completing one revolution in about 26,000 years, so the misnamed sidereal day ("sidereal" is derived from the Latin sidus meaning "star") is 0.0084 seconds shorter than Earth's period of rotation relative to the fixed stars.
kilosecond
"Killosecond" is an Imperial unit for 'Time' expressed as $ks$.
Sidereal Minute
Sidereal time is a time-keeping system astronomers use to keep track of the direction to point their telescopes to view a given star in the night sky. A mean sidereal day is about $23 h 56 m 4.1 s$ in length. However, due to variations in the rotation rate of the Earth, the rate of an ideal sidereal clock deviates from any simple multiple of a civil clock. In practice, the difference is kept track of by the difference UTC-UT1, which is measured by radio telescopes and kept on file and available to the public at the IERS and at the United States Naval Observatory. A Sidereal Minute is $1/60^{th}$ of a Sidereal Hour, which is $1/24^{th}$ of a Sidereal Day.
Mean Gregorian Month
Mean Julian Month
Million Years
1,000,000-fold of the derived unit year.
Mega Year
megannum
Microhenry per Kiloohm
0.000001-fold of the SI derived unit henry divided by the 1,000-fold of the SI derived unit ohm
Microhenry per Ohm
0.000001-fold of the SI derived unit henry divided by the SI derived unit ohm
Millihenry per Kiloohm
0.001-fold of the SI derived unit henry divided by the 1 000-fold of the SI derived unit ohm
Millihenry per Ohm
0.001-fold of the SI derived unit henry divided by the SI derived unit ohm
Millipascal Second per Bar
0.001-fold of the product of the SI derived unit pascal and the SI base unit second divided by the unit of the pressure bar
nanosecond
A nanosecond is a SI unit of time equal to one billionth of a second (10-9 or 1/1,000,000,000 s). One nanosecond is to one second as one second is to 31.69 years. The word nanosecond is formed by the prefix nano and the unit second.
Pascal Second per Bar
product out of the SI derived unit pascal and the SI base unit second divided by the unit bar
Reciprocal Metre
Reciprocal Meter
Per Meter Unit is a denominator unit with dimensions $/m$.
Reciprocal Second
A reciprical unit of time for $\textit{reciprocal second}$ or $\textit{inverse second}$. The $\textit{Per Second}$ is a unit of rate.
Poise
The poise is the unit of dynamic viscosity in the centimetre gram second system of units. It is named after Jean Louis Marie Poiseuille.
Poise per Bar
[CGS] unit poise divided by the SI derived unit pascal
Picosecond
0.000000000001-fold of the SI base unit second
Planck Time
In physics, the Planck time, denoted by $t_P$, is the unit of time in the system of natural units known as Planck units. It is the time required for light to travel, in a vacuum, a distance of 1 Planck length. The unit is named after Max Planck, who was the first to propose it. The formula for $\textit{PlankTime}$ is: $$ \\ t_P \equiv \sqrt{\frac{\hbar G}{c^5}} \approx 5.39106(32) \times 10^{-44} s$$ where, $c$ is the speed of light in a vacuum, $\hbar$ is the reduced Planck's constant (defined as $\hbar = \frac{h}{2 \pi}$ and $G$ is the gravitational constant. The two digits between parentheses denote the standard error of the estimated value.
Shake
A shake is an informal unit of time equal to 10 nanoseconds. It has applications in nuclear physics, helping to conveniently express the timing of various events in a nuclear explosion. The typical time required for one step in the chain reaction (i.e. the typical time for each neutron to cause a fission event which releases more neutrons) is of order 1 shake, and the chain reaction is typically complete by 50 to 100 shakes.
Ton of Refrigeration
واط في المتر المربع
watt na metr čtvereční
Watt je Quadratmeter
watt per square metre
Watt per Square Meter
vatio por metro cuadrado
وات بر مترمربع
watt par mètre carré
वाट प्रति वर्ग मीटर
watt al metro quadrato
ワット毎平方メートル
watt per meter persegi
wat na metr kwadratowy
watt por metro quadrado
watt pe metru pătrat
ватт на квадратный метр
watt na kvadratni meter
watt bölü metre kare
瓦特每平方米
"Watt per Square Meter} is a unit of irradiance defined as the power received per area. This is a unit in the category of Energy flux. It is also known as watts per square meter, watt per square metre, watts per square metre, watt/square meter, watt/square metre. This unit is commonly used in the SI unit system. Watt Per Square Meter ($W/m^2$) has a dimension of $MT^{-3"$ where $M$ is mass, and $T$ is time. This unit is the standard SI unit in this category.
Common Year
31,536,000-fold of the SI base unit second according a common year with 365 days
31,557,600-fold of the SI base unit second according to one year with 365.25 days as physical quantity in the metrology
Sidereal Year
A sidereal year is the time taken for Sun to return to the same position with respect to the stars of the celestial sphere.
Tropical Year
A tropical year (also known as a solar year), for general purposes, is the length of time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice. Because of the precession of the equinoxes, the seasonal cycle does not remain exactly synchronised with the position of the Earth in its orbit around the Sun. As a consequence, the tropical year is about 20 minutes shorter than the time it takes Earth to complete one full orbit around the Sun as measured with respect to the fixed stars. Since antiquity, astronomers have progressively refined the definition of the tropical year, and currently define it as the time required for the mean Sun's tropical longitude (longitudinal position along the ecliptic relative to its position at the vernal equinox) to increase by 360 degrees (that is, to complete one full seasonal circuit).
Fan
Any device with two or more blades or vanes attached to a rotating shaft used to produce an airflow for the purpose of comfort, ventilation, exhaust, heating, cooling, or any other gaseous transport.
Parameter
Parameter points are configuration settings used to guide the operation of equipment and control systems; for example they may provide bounds on valid setpoint values
Modulus of Elasticity
The Modulus of Elasticity is the mathematical description of an object or substance's tendency to be deformed elastically (that is, non-permanently) when a force is applied to it.
$E = \frac{\sigma}{\varepsilon}$, where $\sigma$ is the normal stress and $\varepsilon$ is the linear strain.
Applicable units are those of quantitykind:ModulusOfElasticity
Shear Modulus
The Shear Modulus or modulus of rigidity, denoted by $G$, or sometimes $S$ or $\mu$, is defined as the ratio of shear stress to the shear strain.
$G = \frac{\tau}{\gamma}$, where $\tau$ is the shear stress and $\gamma$ is the shear strain.
Applicable units are those of quantitykind:ShearModulus
Specific Volume
"Specific Volume" ($\nu$) is the volume occupied by a unit of mass of a material. It is equal to the inverse of density.
$sv = \frac{1}{\rho}$, where $\rho$ is mass density.
Temperature per Time
Decare
unit of the area which is mainly common in the agriculture and forestry: 1 da = 10 a
unit of area, defined by a circle with a diameter of one thousand mil (one inch or 25.4 mm) based on the formula: area = π·(diameter/2)²
Synodic month
A unit of time corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks and calculated as 29.53059 days.
1,000,000-fold of the SI derived unit second
Microgram per Cubic Metre
Microgram per Cubic Meter
0.000000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
microsecond
"Microsecond" is a unit for 'Time' expressed as $microsec$.
millisecond
"Millisecond" is an Imperial unit for 'Time' expressed as $ms$.
Millivolt
Planck Area
سيمنز
сименс
siemens
Siemens
ζίμενς
زیمنس
סימנס
सीमैन्स
ジーメンス
simens
西门子
$\textit{Siemens}$ is the SI unit of electric conductance, susceptance, and admittance. The most important property of a conductor is the amount of current it will carry when a voltage is applied. Current flow is opposed by resistance in all circuits, and by also by reactance and impedance in alternating current circuits. Conductance, susceptance, and admittance are the inverses of resistance, reactance, and impedance, respectively. To measure these properties, the siemens is the reciprocal of the ohm. In other words, the conductance, susceptance, or admittance, in siemens, is simply 1 divided by the resistance, reactance or impedance, respectively, in ohms. The unit is named for the German electrical engineer Werner von Siemens (1816-1892). $$\ \text{Siemens}\equiv\frac{\text{A}}{\text{V}}\equiv\frac{\text{amp}}{\text{volt}}\equiv\frac{\text{F}}{\text {s}}\equiv\frac{\text{farad}}{\text{second}}$$
Square Yard
The square yard is an imperial/US customary unit of area, formerly used in most of the English-speaking world but now generally replaced by the square metre outside of the U.S. , Canada and the U.K. It is defined as the area of a square with sides of one yard in length. (Gaj in Hindi).
Air Handling Unit
Air Quality
Measure of the air quality in a space typically based on the concentration of pollutants
Space
A part of the physical world or a virtual world whose 3D spatial extent is bounded actually or theoretically, and provides for certain functions within the zone it is contained in.
Water Temperature Sensor
Measures the temperature of water
Dewpoint
Disable
Effective
Expansion
Frequency
Natural
Relative
Start
Stop
Telecom
كمية المادة
Количество вещество
Látkové množství
Stoffmenge
Ποσότητα Ουσίας
amount of substance
cantidad de sustancia
مقدار ماده
quantité de matière
כמות חומר
पदार्थ की मात्रा
anyagmennyiség
quantità di sostanza
物質量
quantitas substantiae
Jumlah bahan
liczność materii
quantidade de substância
cantitate de substanță
Количество вещества
množina snovi
madde miktarı
物质的量
$\textit{Amount of Substance}$ is a standards-defined quantity that measures the size of an ensemble of elementary entities, such as atoms, molecules, electrons, and other particles. It is sometimes referred to as chemical amount. The International System of Units (SI) defines the amount of substance to be proportional to the number of elementary entities present. The SI unit for amount of substance is mole. It has the unit symbol $mol$. The mole is defined as the amount of substance that contains an equal number of elementary entities as there are atoms in 0.012kg of the isotope carbon-12. This number is called Avogadro's number and has the value $6.02214179(30) \times 10^{23}$. The only other unit of amount of substance in current use is the $pound-mole$ with the symbol $lb-mol$, which is sometimes used in chemical engineering in the United States. One $pound-mole$ is exactly $453.59237 mol$.
chemical amount
quantità chimica
quantità di materia
jumlah kimia
$\textit{Conductivity}$ is a scalar or tensor quantity the product of which by the electric field strength in a medium is equal to the electric current density. For an isotropic medium the conductivity is a scalar quantity; for an anisotropic medium it is a tensor quantity. $$\mathbf{J} = \sigma \mathbf{E}$$ Where $\mathbf{J}$ is electric current density, and $\mathbf{E}$ is electric field strength.
$\mathbf{J} = \sigma \mathbf{E}$, where $\mathbf{J}$ is electric current density, and $\mathbf{E}$ is electric field strength.
"Conductivity" is a scalar or tensor quantity the product of which by the electric field strength in a medium is equal to the electric current density. For an isotropic medium the conductivity is a scalar quantity; for an anisotropic medium it is a tensor quantity.
Applicable units are those of quantitykind:Conductivity
شدة المجال الكهربائي
Електрично поле
elektrické pole
elektrische Feldstärke
Ηλεκτρικό πεδίο
electric field strength
intensidad de campo eléctrico
شدت میدان الکتریکی
intensité de champ électrique
שדה חשמלי
विद्युत्-क्षेत्र
Elektromos mező
intensità di campo elettrico
電界強度
Kekuatan medan elektrik
natężenie pola elektrycznego
intensidade de campo elétrico
câmp electric
Напряженность электрического поля
jakost električnega polja
elektriksel alan kuvveti
電場
$\textit{Electric Field Strength}$ is the magnitude and direction of an electric field, expressed by the value of $E$, also referred to as $\color{indigo} {\textit{electric field intensity}}$ or simply the electric field.
$\mathbf{E} = \mathbf{F}/q$, where $\mathbf{F}$ is force and $q$ is electric charge, of a test particle at rest.
Applicable units are those of quantitykind:ElectricFieldStrength
Number Density
In physics, astronomy, and chemistry, number density (symbol: n) is a kind of quantity used to describe the degree of concentration of countable objects (atoms, molecules, dust particles, galaxies, etc.) in the three-dimensional physical space.
$n = \frac{N}{V}$, where $N$ is the number of particles and $V$ is volume.
Specific heat capacity at constant pressure
Applicable units are those of quantitykind:SpecificHeatCapacityAtConstantPressure
Specific heat capacity at constant volume
Applicable units are those of quantitykind:SpecificHeatCapacityAtConstantVolume
Specific Heat Capacity at Saturation
Applicable units are those of quantitykind:SpecificHeatCapacityAtSaturation
are
An 'are' is a unit of area equal to 0.02471 acre and 100 centare.
Byte
The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits.
Centimetre per Hour
Centimeter per Hour
0.01-fold of the SI base unit metre divided by the unit hour
Centimetres per thousand years
centimetre per second
centimeter per second
"Centimeter per Second" is a C.G.S System unit for 'Linear Velocity' expressed as $cm/s$.
Centimetres per year
Square Centimetre
Square Centimeter
A unit of area equal to that of a square, of sides 1cm
Dec
One decade is a factor of 10 difference between two numbers (an order of magnitude difference) measured on a logarithmic scale. It is especially useful when referring to frequencies and when describing frequency response of electronic systems, such as audio amplifiers and filters. The factor-of-ten in a decade can be in either direction: so one decade up from 100 Hz is 1000 Hz, and one decade down is 10 Hz. The factor-of-ten is what is important, not the unit used, so $3.14 rad/s$ is one decade down from $31.4 rad/s$.
Square Decimetre
Square Decimeter
0.1-fold of the power of the SI base unit metre with the exponent 2
Foot per Day
"Foot per Day" is an Imperial unit for 'Linear Velocity' expressed as $ft/d$.
Foot per Minute
"Foot per Minute" is an Imperial unit for 'Linear Velocity' expressed as $ft/min$.
Gigabase Pair
A gigabase (abbreviated Gb, or Gbp for gigabase pairs.) is a unit of measurement used to help designate the length of DNA. One gigabase is equal to 1 billion bases.
Heart Beat
Inch per Minute
The inch per minute is a unit of speed or velocity. It expresses the distance in inches (in) traveled or displaced, divided by time in minutes (min). The equivalent SI unit is the metre per second.
Square Inch
A square inch is a unit of area, equal to the area of a square with sides of one inch. The following symbols are used to denote square inches: square in, sq inches, sq inch, sq in inches/-2, inch/-2, in/-2, inches^2, $inch^2$, $in^2$, $inches^2$, $inch^2$, $in^2$ or in some cases $"^2$. The square inch is a common unit of measurement in the United States and the United Kingdom.
Joule per Second
SI derived unit joule divided by the SI base unit second
Kilometres per day
A change in location of a distance of one thousand metres in an elapsed time of one day (86400 seconds).
KiloYear
Metre per Day
Meter per Day
Meter Per Day (m/day) is a unit in the category of Velocity. It is also known as meter/day, meters per day, metre per day, metres per day. Meter Per Day (m/day) has a dimension of L*T-1 where L is length, and T is time. It can be converted to the corresponding standard SI unit m/s by multiplying its value by a factor of 0.00001157407407407407
Metre per Minute
Meter per Minute
Meter Per Minute (m/min) is a unit in the category of Velocity. It is also known as meter/minute, meters per minute, metre per minute, metres per minute. Meter Per Minute (m/min) has a dimension of LT-1 where $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit m/s by multiplying its value by a factor of 0.016666666666
Metre per year
A rate of change of SI standard unit length over a period of an average calendar year (365.25 days).
Mile per Minute
Miles per minute is an imperial unit of speed expressing the number of statute miles covered in one minute.
Square Mile
The square mile (abbreviated as sq mi and sometimes as mi) is an imperial and US unit of measure for an area equal to the area of a square of one statute mile. It should not be confused with miles square, which refers to the number of miles on each side squared. For instance, 20 miles square (20 × 20 miles) is equal to 400 square miles. One square mile is equivalent to: 4,014,489,600 square inches 27,878,400 square feet, 3,097,600 square yards, 640 acres, 258.9988110336 hectares, 2560 roods, 25,899,881,103.36 square centimetres, 2,589,988.110336 square metres, 2.589988110336 square kilometres When applied to a portion of the earth's surface, which is curved rather than flat, 'square mile' is an informal synonym for section.
Nautical Mile per Minute
The SI derived unit for speed is the meter/second. 1 meter/second is equal to 0.0323974082073 nautical mile per minute.
Square Mile US Statute
Megahertz
"Megahertz" is a C.G.S System unit for 'Frequency' expressed as $MHz$.
Square Micrometre
Square Micrometer
0.000000000001-fold of the power of the SI base unit metre with the exponent 2
millimetres per day
millimeters per day
A measure of change in depth over time for a specific area, typically used to express precipitation intensity or evaporation (the amount of liquid water evaporated per unit of time from the area)
Millimetre per Hour
Millimeter per Hour
0001-fold of the SI base unit metre divided by the unit hour
Millimetre per Minute
Millimeter per Minute
0.001-fold of the SI base unit metre divided by the unit minute
Millimetre per Second
Millimeter per Second
0.001-fold of the SI base unit metre divided by the SI base unit second
Millimetre per Year
Millimeter per Year
0.001-fold of the SI base unit metre divided by the unit year
Square Millimetre
Square Millimeter
0.000001-fold of the power of the SI base unit metre with the exponent 2
Electric Susceptibility Unit
Electric susceptibility is a dimensionless proportionality constant that indicates the degree of polarization of a dielectric material in response to an applied electric field. Here P = epsilon_0 * chi_e * E. Where epsilon_0 is the electric permittivity of free space (electric constant), P is the polarization density of the material chi_e is the electric susceptibility and E is the electric field.
\chi_{\text{e}} = \frac{{\mathbf P}}{\varepsilon_0{\mathbf E}}
Magnetic Susceptibility Unit
Magnetic susceptibility is a dimensionless proportionality constant that indicates the degree of magnetization of a material in response to an applied magnetic field. Here M = chi * H. Where M is the magnetization of the material (the magnetic dipole moment per unit volume), measured in amperes per meter, and H is the magnetic field strength, also measured in amperes per meter. Chi is therefore a dimensionless quantity.
\chi_\text{v} = \frac{\mathbf{M}}{\mathbf{H}}
Collection
A Collection can be associated with Equipments, Locations/Spaces, Points, and other Collections.
Meter
A device that measure usage or consumption of some media --- typically a form energy or power.
Outside Air
air external to a defined zone (e.g., corridors).
Return Air
air removed from a space to be recirculated or exhausted. Air extracted from a space and totally or partially returned to an air conditioner, furnace, or other heating, cooling, or ventilating system.
Amount of Substance per Mass
Applicable units are those of quantitykind:AmountOfSubstancePerMass
Electric charge per area
Linear Acceleration
Applicable units are those of quantitykind:LinearAcceleration
Square Foot
The square foot (plural square feet; abbreviated $ft^2$ or $sq \, ft$) is an imperial unit and U.S. customary unit of area, used mainly in the United States, Canada, United Kingdom, Hong Kong, Bangladesh, India, Pakistan and Afghanistan. It is defined as the area of a square with sides of 1 foot in length.
Inch per Second
The inch per second is a unit of speed or velocity. It expresses the distance in inches (in) traveled or displaced, divided by time in seconds (s, or sec). The equivalent SI unit is the metre per second. Abbreviations include in/s, in/sec, ips, and less frequently in s.
1,000,000-fold of the power of the SI base unit metre with the exponent 2
Kilovolt
Circular Mil
A circular mil is a unit of area, equal to the area of a circle with a diameter of one mil (one thousandth of an inch). It is a convenient unit for referring to the area of a wire with a circular cross section, because the area in circular mils can be calculated without reference to pi ($\pi$). The area in circular mils, A, of a circle with a diameter of d mils, is given by the formula: Electricians in Canada and the United States are familiar with the circular mil because the National Electrical Code (NEC) uses the circular mil to define wire sizes larger than 0000 AWG. In many NEC publications and uses, large wires may be expressed in thousands of circular mils, which is abbreviated in two different ways: MCM or kcmil. For example, one common wire size used in the NEC has a cross-section of 250,000 circular mils, written as 250 kcmil or 250 MCM, which is the first size larger than 0000 AWG used within the NEC.
Nautical Mile per Hour
The knot is a unit of speed equal to one nautical mile (1.852 km) per hour, approximately 1.151 mph. The abbreviation kn is preferred by the International Hydrographic Organization (IHO), which includes every major seafaring nation; but the abbreviations kt (singular) and kts (plural) are also widely used conflicting with the SI symbol for kilotonne which is also "kt". The knot is a non-SI unit accepted for use with the International System of Units (SI). Worldwide, the knot is used in meteorology, and in maritime and air navigation-for example, a vessel travelling at 1 knot along a meridian travels one minute of geographic latitude in one hour.
MilliW
Neper
The neper is a logarithmic unit for ratios of measurements of physical field and power quantities, such as gain and loss of electronic signals. It has the unit symbol Np. The unit's name is derived from the name of John Napier, the inventor of logarithms. As is the case for the decibel and bel, the neper is not a unit in the International System of Units (SI), but it is accepted for use alongside the SI. Like the decibel, the neper is a unit in a logarithmic scale. While the bel uses the decadic (base-10) logarithm to compute ratios, the neper uses the natural logarithm, based on Euler's number
Square Nanometre
Square Nanometer
A unit of area equal to that of a square, of sides 1nm
NanoMole
Oct
An octave is a doubling or halving of a frequency. One oct is the logarithmic frequency interval between $f1$ and $f2$ when $f2/f1 = 2$.
Reads per Kilobase
RPK (Reads Per Kilobases) are obtained by dividing read counts by gene lengths (expressed in kilo-nucleotides).
Chilled Water
water used as a cooling medium (particularly in air-conditioning systems or in processes) at below ambient temperature.
Hot Water
Hot water used for HVAC heating or supply to hot taps
Temperature Parameter
Parameters relevant to temperature-related systems and points
Box
Current
Electrical
Station
Usage
Voltage
Coefficient of heat transfer
"Coefficient of Heat Transfer", in thermodynamics and in mechanical and chemical engineering, is used in calculating the heat transfer, typically by convection or phase transition between a fluid and a solid. The heat transfer coefficient is the proportionality coefficient between the heat flux, that is heat flow per unit area, q/A, and the thermodynamic driving force for the flow of heat (that is, the temperature difference, (Delta T). Areic heat flow rate divided by thermodynamic temperature difference. In building technology, the "Coefficient of Heat Transfer", is often called "thermal transmittance}" with the symbol "U". It has SI units in watts per squared meter kelvin.
"Coefficient of Heat Transfer", in thermodynamics and in mechanical and chemical engineering, is used in calculating the heat transfer, typically by convection or phase transition between a fluid and a solid. The heat transfer coefficient is the proportionality coefficient between the heat flux, that is heat flow per unit area, $q/A$, and the thermodynamic driving force for the flow of heat (that is, the temperature difference, $ \bigtriangleup T $). Areic heat flow rate divided by thermodynamic temperature difference. In building technology, the $\textit{Coefficient of Heat Transfer}$, is often called $\textit{thermal transmittance}$, with the symbol $U$. $\textit{Coefficient of Heat Transfer}$, has SI units in watts per squared meter kelvin: $W/(m^2 \cdot K)$ . $K = \frac{\varphi}{T}$, where $\varphi$ is areic heat flow rate and $T$ is thermodynamic temperature difference.
In chemistry, concentration is defined as the abundance of a constituent divided by the total volume of a mixture. Furthermore, in chemistry, four types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration. The term concentration can be applied to any kind of chemical mixture, but most frequently it refers to solutes in solutions.
الزاوية النصف قطرية
Равнинен ъгъл
Rovinný úhel
ebener Winkel
Επίπεδη γωνία
plane angle
ángulo plano
زاویه مستوی
angle plan
זווית
क्षेत्र
szög
angolo piano
弧度
angulus planus
Sudut satah
kąt płaski
medida angular
unghi plan
Плоский угол
ravninski kot
düzlemsel açı
角度
The inclination to each other of two intersecting lines, measured by the arc of a circle intercepted between the two lines forming the angle, the center of the circle being the point of intersection. An acute angle is less than $90^\circ$, a right angle $90^\circ$; an obtuse angle, more than $90^\circ$ but less than $180^\circ$; a straight angle, $180^\circ$; a reflex angle, more than $180^\circ$ but less than $360^\circ$; a perigon, $360^\circ$. Any angle not a multiple of $90^\circ$ is an oblique angle. If the sum of two angles is $90^\circ$, they are complementary angles; if $180^\circ$, supplementary angles; if $360^\circ$, explementary angles.
An angle formed by two straight lines (in the same plane) angle - the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians
Static pressure
"Static Pressure" is the pressure at a nominated point in a fluid. Every point in a steadily flowing fluid, regardless of the fluid speed at that point, has its own static pressure $P$, dynamic pressure $q$, and total pressure $P_0$. The total pressure is the sum of the dynamic and static pressures, that is $P_0 = P + q$.
Acre
The acre is a unit of area in a number of different systems, including the imperial and U.S. customary systems. Its international symbol is ac. The most commonly used acres today are the international acre and, in the United States, the survey acre. The most common use of the acre is to measure tracts of land. One international acre is equal to 4046.8564224 square metres.
Barn
A barn (symbol b) is a unit of area. Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is used in all fields of high energy physics to express the cross sections of any scattering process, and is best understood as a measure of the probability of interaction between small particles. A barn is defined as $10^{-28} m^2 (100 fm^2)$ and is approximately the cross sectional area of a uranium nucleus. The barn is also the unit of area used in nuclear quadrupole resonance and nuclear magnetic resonance to quantify the interaction of a nucleus with an electric field gradient. While the barn is not an SI unit, it is accepted for use with the SI due to its continued use in particle physics.
بيكريل
бекерел
becquerel
Becquerel
μπεκερέλ
بکرل
בקרל
बैक्वेरल
ベクレル
becquerelium
bekerel
беккерель
贝克勒尔
The $\textit{Becquerel}$ is the SI derived unit of activity, usually meaning radioactivity. Radioactivity is caused when atoms disintegrate, ejecting energetic particles. One becquerel is the radiation caused by one disintegration per second; this is equivalent to about $27.0270 \text{picocuries (pCi)}$. The unit is named for a French physicist, Antoine-Henri Becquerel (1852-1908), the discoverer of radioactivity. Note: both the becquerel and the hertz are basically defined as one event per second, yet they measure different things. The hertz is used to measure the rates of events that happen periodically in a fixed and definite cycle. The becquerel is used to measure the rates of events that happen sporadically and unpredictably, not in a definite cycle.
Flight
Knot
The knot (pronounced 'not') is a unit of speed equal to one nautical mile (1.852 km) per hour, approximately 1.151 mph. The abbreviation $kn$ is preferred by the International Hydrographic Organization (IHO), which includes every major sea-faring nation; however, the abbreviations kt (singular) and kts (plural) are also widely used. However, use of the abbreviation kt for knot conflicts with the SI symbol for kilotonne. The knot is a non-SI unit accepted for use with the International System of Units (SI). Worldwide, the knot is used in meteorology, and in maritime and air navigation - for example, a vessel travelling at 1 knot along a meridian travels one minute of geographic latitude in one hour. Etymologically, the term knot derives from counting the number of knots in the line that unspooled from the reel of a chip log in a specific time.
Product of the RMS value of the voltage and the RMS value of an alternating electric current
Week
Air Temperature Setpoint
Sets temperature of air
Valve
A device that regulates, directs or controls the flow of a fluid by opening, closing or partially obstructing various passageways
Catalytic Activity Concentration
The catalytic activity of an enzyme per unit volume, where volume refers to that of the original enzyme‐containing preparation, not that of the assay system. It may be expressed in katals per litre.
Applicable units are those of quantitykind:CatalyticActivityConcentration
كمون كهربائي
Електрически потенциал
elektrický potenciál
elektrisches Potenzial
electric potential
potencial eléctrico
پتانسیل الکتریکی
potentiel électrique
מתח חשמלי (הפרש פוטנציאלים)
विद्युत विभव
elektromos feszültség , elektromos potenciálkülönbség
potenziale elettrico
電位
tensio electrica
Keupayaan elektrik
potencjał elektryczny
potencial elétrico
potențial electric
электростатический потенциал
električni potencial
elektrik potansiyeli
電勢
The Electric Potential is a scalar valued quantity associated with an electric field. The electric potential $\phi(x)$ at a point, $x$, is formally defined as the line integral of the electric field taken along a path from x to the point at infinity. If the electric field is static, that is time independent, then the choice of the path is arbitrary; however if the electric field is time dependent, taking the integral a different paths will produce different results.
$-\text{grad} \; V = E + \frac{\partial A}{\partial t}$, where $E$ is electric field strength, $A$ is magentic vector potential and $t$ is time.
Applicable units are those of quantitykind:ElectricPotential
vis electromotrix
جهد كهربائي
elektrické napětí
elektrische Spannung
electric potential difference
tensión eléctrica
ولتاژ/ اختلاف پتانسیل
tension électrique
विभवांतर
differenza di potenziale elettrico
電圧
Voltan Perbezaan keupayaan elektrik
napięcie elektryczne
tensão elétrica (diferença de potencial)
diferență de potențial electric
электрическое напряжение
električna napetost
gerilim
電壓
"Electric Potential Difference" is a scalar valued quantity associated with an electric field.
$V_{ab} = \int_{r_a(C)}^{r_b} (E +\frac{\partial A}{\partial t}) $, where $E$ is electric field strength, $A$ is magentic vector potential, $t$ is time, and $r$ is position vector along a curve C from a point $a$ to $b$.
Applicable units are those of quantitykind:ElectricPotentialDifference
tension
tensione elettrica
ketegangan
tensiune
المجال المغناطيسي
Магнитна индукция
Magnetická indukce
magnetische Flussdichte
magnetic flux density
Densidad de flujo magnético
چگالی شار مغناطیسی
Densité de flux magnétique
צפיפות שטף מגנטי
चुम्बकीय क्षेत्र
mágneses indukció
densità di flusso magnetico
磁束密度
densitas fluxus magnetici
Ketumpatan fluks magnet
indukcja magnetyczna
densidade de fluxo magnético
inducție magnetică
Магнитная индукция
gostota magnetnega pretoka
manyetik akı yoğunluğu
磁通量密度
"Magnetic Flux Density" is a vector quantity and is the magnetic flux per unit area of a magnetic field at right angles to the magnetic force. It can be defined in terms of the effects the field has, for example by $B = F/q v \sin \theta$, where $F$ is the force a moving charge $q$ would experience if it was travelling at a velocity $v$ in a direction making an angle θ with that of the field. The magnetic field strength is also a vector quantity and is related to $B$ by: $H = B/\mu$, where $\mu$ is the permeability of the medium.
$\mathbf{F} = qv \times B$, where $F$ is force and $v$ is velocity of any test particle with electric charge $q$.
magnetische Induktion
inducción magnética
Mass per Energy
Mass per Energy ($m/E$) is a physical quantity that bridges mass and energy. The SI unit is $kg/J$ or equivalently $s^2/m^2$.
Mass per Energy is a physical quantity that can be used to relate the energy of a system to its mass.
Applicable units are those of quantitykind:MassPerEnergy
Non-active Power
"Non-active Power", for a two-terminal element or a two-terminal circuit under periodic conditions, is the quantity equal to the square root of the difference of the squares of the apparent power and the active power.
$Q^{'} = \sqrt{{\left | \underline{S} \right |}^2 - P^2}$, where $\underline{S}$ is apparent power and $P$ is active power.
Applicable units are those of quantitykind:NonActivePower
Specific Heat Capacity
"Specific Heat Capacity" of a solid or liquid is defined as the heat required to raise unit mass of substance by one degree of temperature. This is $\textit{Heat Capacity}$ divided by $\textit{Mass}$. Note that there are corresponding molar quantities.
Specific Heat Capacity of a solid or liquid is defined as the heat required to raise unit mass of substance by one degree of temperature. This is Heat Capacity divided by Mass. Note that there are corresponding molar quantities.
Bit
In information theory, a bit is the amount of information that, on average, can be stored in a discrete bit. It is thus the amount of information carried by a choice between two equally likely outcomes. One bit corresponds to about 0.693 nats (ln(2)), or 0.301 hartleys (log10(2)).
Kilowatt
The unit $\textit{Kilowatt}$ is a derived unit of power in the International System of Units (SI). The unit, defined as 1,000 joule per second, measures the rate of energy conversion or transfer.
Minute Angle
A unit of time corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks. Also known as the 'Synodic Month' and calculated as 29.53059 days.
Bypass
Cooling
Enthalpy
Matter
Mixed
Particulate
Standby
Step
used only with array datatype if omitted with an array then the entire array is referenced
Energy per electric charge
Voltage is a representation of the electric potential energy per unit charge. If a unit of electrical charge were placed in a location, the voltage indicates the potential energy of it at that point. In other words, it is a measurement of the energy contained within an electric field, or an electric circuit, at a given point. Voltage is a scalar quantity. The SI unit of voltage is the volt, such that $1 volt = 1 joule/coulomb$.
حقل مغناطيسي
Magnetické pole
magnetische Feldstärke
magnetic field strength
intensidad de campo magnético
شدت میدان مغناطیسی
intensité de champ magnétique
intensità di campo magnetico
磁場
Kekuatan medan magnetik
pole magnetyczne
intensidade de campo magnético
Câmp magnetic
Магнитное поле
jakost magnetnega polja
Manyetik alan
$\textit{Magnetic Field Strength}$ is a vector quantity obtained at a given point by subtracting the magnetization $M$ from the magnetic flux density $B$ divided by the magnetic constant $\mu_0$. The magnetic field strength is related to the total current density $J_{tot}$ via: $\text{rot} H = J_{tot}$.
$\mathbf{H} = \frac{\mathbf{B} }{\mu_0} - M$, where $\mathbf{B} $ is magnetic flux density, $\mu_0$ is the magnetic constant and $M$ is magnetization.
Mass Ratio
In aerospace engineering, mass ratio is a measure of the efficiency of a rocket. It describes how much more massive the vehicle is with propellant than without; that is, it is the ratio of the rocket's wet mass (vehicle plus contents plus propellant) to its dry mass (vehicle plus contents)
Moment of Force
Moment of force (often just moment) is the tendency of a force to twist or rotate an object.
$M = r \cdot F$, where $r$ is the position vector and $F$ is the force.
Applicable units are those of quantitykind:MomentOfForce
القدرة الكهربائية الردفعلية;الردية
Jalový výkon
Blindleistung
reactive power
potencia reactiva
توان راکتیو
puissance réactive
potenza reattiva
無効電力
Kuasa reaktif
moc bierna
potência reativa
reaktif güç
无功功率
"Reactive Power", for a linear two-terminal element or two-terminal circuit, under sinusoidal conditions, is the quantity equal to the product of the apparent power $S$ and the sine of the displacement angle $\psi$. The absolute value of the reactive power is equal to the non-active power. The ISO (and SI) unit for reactive power is the voltampere. The special name $\textit{var}$ and symbol $\textit{var}$ are given in IEC 60027 1.
$Q = lm \underline{S}$, where $\underline{S}$ is complex power. Alternatively expressed as: $Q = S \cdot \sin \psi$, where $\psi$ is the displacement angle.
Applicable units are those of quantitykind:ReactivePower
Thermal Conductivity
In physics, thermal conductivity, $k$ (also denoted as $\lambda$), is the property of a material's ability to conduct heat. It appears primarily in Fourier's Law for heat conduction and is the areic heat flow rate divided by temperature gradient.
$\lambda = \frac{\varphi}{T}$, where $\varphi$ is areic heat flow rate and $T$ is temperature gradient.
Applicable units are those of quantitykind:ThermalConductivity
Foot per Hour
"Foot per Hour" is an Imperial unit for 'Linear Velocity' expressed as $ft/h$.
Foot per Second
$\textit{foot per second}$ (plural $\textit{feet per second}$) is a unit of both speed (scalar) and velocity (vector quantity, which includes direction). It expresses the distance in feet ($ft$) traveled or displaced, divided by the time in seconds ($s$, or $sec$). The corresponding unit in the International System of Units (SI) is the $\textit{metre per second}$. Abbreviations include $ft/s$, $ft/sec$ and $fps$, and the rarely used scientific notation $ft\,s$.
Kilometre per Hour
Kilometer per Hour
"Kilometer per Hour" is a C.G.S System unit for 'Linear Velocity' expressed as $km/h$.
Kilometre per Second
Kilometer per Second
"Kilometer per Second" is a C.G.S System unit for 'Linear Velocity' expressed as $km/s$.
Metre per Hour
Meter per Hour
Metre per hour is a metric unit of both speed (scalar) and velocity (Vector (geometry)). Its symbol is m/h or mu00b7h-1 (not to be confused with the imperial unit symbol mph. By definition, an object travelling at a speed of 1 m/h for an hour would move 1 metre.
Mile per Hour
Miles per hour is an imperial unit of speed expressing the number of statute miles covered in one hour. It is currently the standard unit used for speed limits, and to express speeds generally, on roads in the United Kingdom and the United States. A common abbreviation is mph or MPH.
Mile per Second
Miles per second is an imperial unit of speed expressing the number of statute miles covered in one second.
Mega Pound Force
Planck Force
Planck force is the derived unit of force resulting from the definition of the base Planck units for time, length, and mass. It is equal to the natural unit of momentum divided by the natural unit of time.
Ton Force (US Short)
unit of the force according to the American system of units
Discharge Air
the air exiting the registers (vents).
Entity
Supply Air
(1) air delivered by mechanical or natural ventilation to a space, composed of any combination of outdoor air, recirculated air, or transfer air. (2) air entering a space from an air-conditioning, heating, or ventilating apparatus for the purpose of comfort conditioning. Supply air is generally filtered, fan forced, and either heated, cooled, humidified, or dehumidified as necessary to maintain specified conditions. Only the quantity of outdoor air within the supply airflow may be used as replacement air.
التسارع
Zrychlení
Beschleunigung
Όγκος
acceleration
aceleración
شتاب
accélération
त्वरण
accelerazione
加速度
acceleratio
Pecutan
przyspieszenie
aceleração
accelerație
Ускоре́ние
pospešek
ivme
$\textit{Acceleration}$ is the (instantaneous) rate of change of velocity. Acceleration may be either linear acceleration, or angular acceleration. It is a vector quantity with dimension $length/time^{2}$ for linear acceleration, or in the case of angular acceleration, with dimension $angle/time^{2}$. $$$$ In SI units, linear acceleration is measured in $meters/second^{2}$ ($m \cdot s^{-2}$), and angular acceleration is measured in $radians/second^{2}$. $$$$ In physics, any increase or decrease in speed is referred to as acceleration and similarly, motion in a circle at constant speed is also an acceleration, since the direction component of the velocity is changing.
Inverse Length
Reciprocal length or inverse length is a measurement used in several branches of science and mathematics. As the reciprocal of length, common units used for this measurement include the reciprocal metre or inverse metre ($m^{-1}$), the reciprocal centimetre or inverse centimetre ($cm^{-1}$), and, in optics, the dioptre.
DeciNewton
Kip
product of the SI base unit kilogram and the SI base unit metre divided by the power of the SI base unit second by exponent 2
Kilopond
illegal unit of the weight, defined as mass of 1 kg which receives a weight of 1 kp through gravitation at sea level, which equates to a force of 9,806 65 newton
0.001-fold of the unit of the weight, defined as a mass of 1 kg which finds out about a weight strength from 1 kp by the gravitational force at sea level which corresponds to a strength of 9,806 65 newton
Has part
The subject is composed in part of the entity given by the object
Common
Condensing
Panel
Source
Mass per Area Time
In Physics and Engineering, mass flux is the rate of mass flow per unit area. The common symbols are $j$, $J$, $\phi$, or $\Phi$ (Greek lower or capital Phi), sometimes with subscript $m$ to indicate mass is the flowing quantity. Its SI units are $ kg s^{-1} m^{-2}$.
$j_m = \lim\limits_{A \rightarrow 0}\frac{I_m}{A}$
CentiNewton
Gram Force
"Gram Force" is a unit for 'Force' expressed as $gf$.
unit of the length according to the Anglo-American and Imperial system of units divided by the unit common year with 365 days
Meganewton
1,000,000-fold of the SI derived unit newton
micrometre per minute
Micrometer per Minute
Micrometre per minute is a derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in micronmeters divided by time in minutes.
Micron per Minute
micron per minute
micrometre per second
Micrometer per Second
Micrometre per second is anderived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds.
Micronewton
0.000001-fold of the SI derived unit newton
Millidegree Celsius
$\textit{Millidegree Celsius}$ is a scaled unit of measurement for temperature.
See NIST section SP811 section 4.2.1.1
See NIST section SP811 section 6.2.8
Imperial Ounce Force
"Ounce Force" is an Imperial unit for 'Force' expressed as $ozf$.
unit yard according to the Anglo-American and Imperial system of units divided by the unit hour
unit yard according to the Anglo-American and Imperial system of units divided by the unit minute
unit yard according to the Anglo-American and Imperial system of units divided by the SI base unit second
Active Power
An $Active Power$ is, under periodic conditions, the mean value, taken over one period $T$, of the instantaneous power $p$. In complex notation, $P = \mathbf{Re} \; \underline{S}$, where $\underline{S}$ is $\textit{complex power}$.
$P = \frac{1}{T}\int_{0}^{T} pdt$, where $T$ is the period and $p$ is instantaneous power.
Applicable units are those of quantitykind:ActivePower
Force per Length
Heat Flow Rate
The rate of heat flow between two systems is measured in watts (joules per second). The formula for rate of heat flow is $\bigtriangleup Q / \bigtriangleup t = -K \times A \times \bigtriangleup T/x$, where $\bigtriangleup Q / \bigtriangleup t$ is the rate of heat flow; $-K$ is the thermal conductivity factor; A is the surface area; $\bigtriangleup T$ is the change in temperature and $x$ is the thickness of the material. $\bigtriangleup T/ x$ is called the temperature gradient and is always negative because of the heat of flow always goes from more thermal energy to less).
Relative Humidity
$\textit{Relative Humidity}$ is the ratio of the partial pressure of water vapor in an air-water mixture to the saturated vapor pressure of water at a prescribed temperature. The relative humidity of air depends not only on temperature but also on the pressure of the system of interest. $$$$ $\textit{Relative Humidity}$ is also referred to as $\textit{Relative Partial Pressure}$. $$$$ Relative partial pressure is often referred to as $RH$ and expressed in percent.
$\varphi = p / p_{sat}$, where $p$ is partial pressure of vapour, $p_{sat}$ is thermodynamic temperature and $V$ is its partial pressure at saturation (at the same temperature). Relative partial pressure is often referred to as $RH$ and expressed in percent. $\textit{Relative Humidity}$ is also referred to as $\textit{Relative Partial Pressure}$.
Applicable units are those of quantitykind:RelativeHumidity
Viscosity
Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or extensional stress. In general terms it is the resistance of a liquid to flow, or its "thickness". Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction. [Wikipedia]. In general conversation or in non-scientific contexts, if someone refers to the viscosity of a fluid, they're likely talking about its dynamic (or absolute) viscosity. However, in engineering or scientific contexts, it's essential to clarify which type of viscosity is being discussed, as the interpretation and use of the data may differ depending on whether one is talking about dynamic or kinematic viscosity.
Applicable units are those of quantitykind:Viscosity
Millinewton
0.001-fold of the SI derived unit newton
Point
Instances of Point cannot be Substances.
Instances of Point cannot be Quantities.
Instances of Point cannot be Collections.
Instances of Point cannot be EntityProperties.
Points cannot have locations; use 'isPointOf' instead
عزم محورى
Torsionmoment
torque
par
couple
coppia
トルク
moment obrotowy
momento de torção
转矩
In physics, a torque ($\tau$) is a vector that measures the tendency of a force to rotate an object about some axis. The magnitude of a torque is defined as force times its lever arm. Just as a force is a push or a pull, a torque can be thought of as a twist. The SI unit for torque is newton meters ($N m$). In U.S. customary units, it is measured in foot pounds (ft lbf) (also known as "pounds feet"). Mathematically, the torque on a particle (which has the position r in some reference frame) can be defined as the cross product: $τ = r x F$ where, r is the particle's position vector relative to the fulcrum F is the force acting on the particles, or, more generally, torque can be defined as the rate of change of angular momentum: $τ = dL/dt$ where, L is the angular momentum vector t stands for time.
$\tau = M \cdot e_Q$, where $M$ is the momentof force and $e_Q$ is a unit vector directed along a $Q-axis$ with respect to which the torque is considered.
Drillmoment
momento de torsión
moment de torsion
momento torcente
binârio
KiloPound Force
1,000-fold of the unit of the force pound-force (lbf) according to the Anglo-American system of units
متر في الثانية
метър в секунда
metr za sekundu
Meter je Sekunde
μέτρο ανά δευτερόλεπτο
metre per second
Meter per Second
metro por segundo
متر بر ثانیه
mètre par seconde
מטרים לשנייה
मीटर प्रति सैकिण्ड
metro al secondo
メートル毎秒
metra per secundum
meter per saat
metr na sekundę
metru pe secundă
метр в секунду
meter na sekundo
metre bölü saniye
米每秒
Metre per second is an SI derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds. The official SI symbolic abbreviation is mu00b7s-1, or equivalently either m/s.
Micromole
تسلا
тесла
tesla
Tesla
τέσλα
טסלה
टैस्ला
テスラ
特斯拉
The SI unit of flux density (or field intensity) for magnetic fields (also called the magnetic induction). The intensity of a magnetic field can be measured by placing a current-carrying conductor in the field. The magnetic field exerts a force on the conductor, a force which depends on the amount of the current and on the length of the conductor. One tesla is defined as the field intensity generating one newton of force per ampere of current per meter of conductor. Equivalently, one tesla represents a magnetic flux density of one weber per square meter of area. A field of one tesla is quite strong: the strongest fields available in laboratories are about 20 teslas, and the Earth's magnetic flux density, at its surface, is about 50 microteslas. The tesla, defined in 1958, honors the Serbian-American electrical engineer Nikola Tesla (1856-1943), whose work in electromagnetic induction led to the first practical generators and motors using alternating current. $T = V\cdot s \cdot m^{-2} = N\cdot A^{-1}\cdot m^{-1} = Wb\cdot m^{-2} = kg \cdot C^{-1}\cdot s^{-1}\cdot A^{-1} = kg \cdot s^{-2}\cdot A^{-1} = N \cdot s \cdot C^{-1}\cdot m^{-1}$ where, $\\$ $A$ = ampere, $C$=coulomb, $m$ = meter, $N$ = newton, $s$ = second, $T$ = tesla, $Wb$ = weber
dynamische Viskosität
dynamic viscosity
viscosidad dinámica
گرانروی دینامیکی/ویسکوزیته دینامیکی
viscosité dynamique
viscosità dinamica
Kelikatan dinamik
lepkość dynamiczna
viscosidade dinâmica
Viscozitate dinamică
динамическую вязкость
dinamična viskoznost
dinamik akmazlık
动力粘度
A measure of the molecular frictional resistance of a fluid as calculated using Newton's law.
$\tau_{xz} = \eta\frac{dv_x}{dz}$, where $\tau_{xz}$ is shear stress in a fluid moving with a velocity gradient $\frac{dv_x}{dz}$ perpendicular to the plane of shear.
Applicable units are those of quantitykind:DynamicViscosity
viscosità di taglio
Gigahertz Metre
Gigahertz Meter
product of the 1,000,000,000-fold of the SI derived unit hertz and the SI base unit metre
product of the 1 000 000 000-fold of the SI derived unit hertz and the SI base unit metre
متر مربع
квадратен метър
čtvereční metr
Quadratmeter
τετραγωνικό μέτρο
square metre
Square Meter
metro cuadrado
mètre carré
מטר רבוע
वर्ग मीटर
négyzetméter
metro quadrato
平方メートル
metrum quadratum
meter persegi
metr kwadratowy
metro quadrado
metru pătrat
квадратный метр
kvadratni meter
metrekare
平方米
The S I unit of area is the square metre.
ستراديان
стерадиан
steradián
Steradiant
στερακτίνιο
steradian
estereorradián
استرادیان
stéradian
סטרדיאן
घन मीटर
szteradián
steradiante
ステラジアン
esterradiano
steradyan
球面度
The steradian (symbol: sr) is the SI unit of solid angle. It is used to describe two-dimensional angular spans in three-dimensional space, analogous to the way in which the radian describes angles in a plane. The radian and steradian are special names for the number one that may be used to convey information about the quantity concerned. In practice the symbols rad and sr are used where appropriate, but the symbol for the derived unit one is generally omitted in specifying the values of dimensionless quantities.
Location
A Location's parts should be always be Locations/Spaces.
Locations can be fed only by other Equipment.
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Architecture
Demand
Security
Service
Information Entropy
Information Entropy is a concept from information theory. It tells how much information there is in an event. In general, the more uncertain or random the event is, the more information it will contain. The concept of information entropy was created by a mathematician. He was named Claude Elwood Shannon. It has applications in many areas, including lossless data compression, statistical inference, cryptography and recently in other disciplines as biology, physics or machine learning.
Kerma Rate
"Kerma Rate" is the kerma per unit time.
$\dot{K} = \frac{dK}{dt}$, where $K$ is the increment of kerma during time interval with duration $t$.
Applicable units are those of quantitykind:KermaRate
Grade
the tangent of an angle of inclination multiplied by 100
Relative Permittivity
The $\textit{relative permittivity}$ of a material under given conditions reflects the extent to which it concentrates electrostatic lines of flux. In technical terms, it is the ratio of the amount of electrical energy stored in a material by an applied voltage, relative to that stored in a vacuum. Likewise, it is also the ratio of the capacitance of a capacitor using that material as a dielectric, compared to a similar capacitor that has a vacuum as its dielectric. Relative permittivity is a dimensionless number that is in general complex. The imaginary portion of the permittivity corresponds to a phase shift of the polarization $P$ relative to $E$ and leads to the attenuation of electromagnetic waves passing through the medium. $$\epsilon_r(w) = \frac{\epsilon(w)}{\epsilon_O}$$, where $\epsilon_r(w)$ is the complex frequency-dependent absolute permittivity of the material, and $\epsilon_O$ is the vacuum permittivity.
Practical Salinity Unit
Practical salinity scale 1978 (PSS-78) is used for ionic content of seawater determined by electrical conductivity. Salinities measured using PSS-78 do not have units, but are approximately scaled to parts-per-thousand for the valid range. The suffix psu or PSU (denoting practical salinity unit) is sometimes added to PSS-78 measurement values. The addition of PSU as a unit after the value is "formally incorrect and strongly discouraged".
PlanckTemperature
Setpoint
A Setpoint is an input value at which the desired property is set
Kilogram Force
"Kilogram Force" is a unit for 'Force' expressed as $kgf$.
microradian
See NIST section SP811 section7.10
Milli ArcSecond
A minute of arc, arcminute, or minute arc (MOA), is a unit of angular measurement equal to one sixtieth (1/60) of one degree (circle/21,600), or $\pi /10,800 radians$. In turn, a second of arc or arcsecond is one sixtieth (1/60) of one minute of arc. Since one degree is defined as one three hundred and sixtieth (1/360) of a rotation, one minute of arc is 1/21,600 of a rotation. the milliarcsecond, abbreviated mas, is used in astronomy.
milliradian
part per trillion
trillionth of a quantity, unit of proportion equal to 10⁻¹²
Parts per Ten Million
Dimensionless unit for concentration. Recommended practice is to use specific units such as $ug/l$.
Alarm
Alarm points are signals (either audible or visual) that alert an operator to an off-normal condition which requires some form of corrective action
Domestic
Thermal
Complex Power
$\textit{Complex Power}$, under sinusoidal conditions, is the product of the phasor $\mathbf{U}$ representing the voltage between the terminals of a linear two-terminal element, or two-terminal circuit and the complex conjugate of the phasor $I$ representing the electric current in the element or circuit.
$\underline{S} = \underline{U}\underline{I^*}$, where $\underline{U}$ is voltage phasor and $\underline{I^*}$ is the complex conjugate of the current phasor.
ArcSecond
"Arc Second" is a unit of angular measure, also called the $\textit{second of arc}$, equal to $1/60 \; arcminute$. One arcsecond is a very small angle: there are 1,296,000 in a circle. The SI recommends $\textit{double prime}$ ($''$) as the symbol for the arcsecond. The symbol has become common in astronomy, where very small angles are stated in milliarcseconds ($mas$).
Gon
"Gon" is a C.G.S System unit for 'Plane Angle' expressed as $gon$.
Grad
"Grad" is a unit for 'Plane Angle' expressed as $grad$.
Mil Angle (NATO)
The Mil unit of plane angle, as defined by NATO to be 1/6400 of a circle.
أوم
ohm
Ohm
ohmio
اهم
אוהם
ओह्म
オーム
ohmium
欧姆
The $\textit{ohm}$ is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm. It is defined as: $$\Omega \equiv\ \frac{\text{V}}{\text{A}}\ \equiv\ \frac{\text{volt}}{\text{amp}}\ \equiv\ \frac{\text{W}}{\text {A}^{2}}\ \equiv\ \frac{\text{watt}}{\text{amp}^{2}}\ \equiv\ \frac{\text{H}}{\text {s}}\ \equiv\ \frac{\text{henry}}{\text{second}}$$
Parts per thousand
The abstract notion of angle. Narrow concepts include plane angle and solid angle. While both plane angle and solid angle are dimensionless, they are actually length/length and area/area respectively.
$\textit{Voltage}$, also referred to as $\textit{Electric Tension}$, is the difference between electrical potentials of two points. For an electric field within a medium, $U_{ab} = - \int_{r_a}^{r_b} E . {dr}$, where $E$ is electric field strength. For an irrotational electric field, the voltage is independent of the path between the two points $a$ and $b$.
$U_{ab} = V_a - V_b$, where $V_a$ and $V_b$ are electric potentials at points $a$ and $b$, respectively.
ArcMinute
A minute of arc, arcminute, or minute arc (MOA), is a unit of angular measurement equal to one sixtieth (1/60) of one degree (circle/21,600), or $\pi /10,800 radians$. In turn, a second of arc or arcsecond is one sixtieth (1/60) of one minute of arc. Since one degree is defined as one three hundred and sixtieth (1/360) of a rotation, one minute of arc is 1/21,600 of a rotation.
Dyne
In physics, the $dyne$ is a unit of force specified in the centimetre-gram-second (CGS) system of units. The $dyne$ is a unit of force specified in the centimetre-gram-second (CGS) system of units. One $dyne$ is equal to $\SI{10}{\micro\newton}$. Equivalently, the $dyne$ is defined as 'the force required to accelerate a mass of one gram at a rate of one centimetre per square second'. A $\textit{dyne per centimetre}$ is the unit traditionally used to measure surface tension.
Kilonewton
1 000-fold of the SI derived unit newton
Poundal
The poundal is a unit of force that is part of the foot-pound-second system of units, in Imperial units introduced in 1877, and is from the specialized subsystem of English absolute (a coherent system). The poundal is defined as the force necessary to accelerate 1 pound-mass to 1 foot per second per second. $1 pdl = 0.138254954376 N$ exactly.
Water
transparent, odorless, tasteless liquid; a compound of hydrogen and oxygen (H2O), containing 11.188% hydrogen and 88.812% oxygen by mass; freezing at 32°F (0°C); boiling near 212°F (100°C).
Fire
تيار كهربائي
Електрически ток
Elektrický proud
elektrische Stromstärke
Ένταση ηλεκτρικού ρεύματος
electric current
corriente eléctrica
جریان الکتریکی
intensité de courant électrique
זרם חשמלי
विद्युत धारा
elektromos áramerősség
corrente elettrica
電流
fluxio electrica
Arus elektrik
prąd elektryczny
corrente elétrica
curent electric
Сила электрического тока
električni tok
elektrik akımı
电流
The quantity kind $\textit{Electric Current}$ is the flow (movement) of electric charge. The amount of electric current through some surface, for example, a section through a copper conductor, is defined as the amount of electric charge flowing through that surface over time. Current is a scalar-valued quantity. Electric current is one of the base quantities in the International System of Quantities, ISQ, on which the International System of Units, SI, is based.
"Electric Current" is the flow (movement) of electric charge. The amount of electric current through some surface, for example, a section through a copper conductor, is defined as the amount of electric charge flowing through that surface over time. Current is a scalar-valued quantity. Electric current is one of the base quantities in the International System of Quantities, ISQ, on which the International System of Units, SI, is based.
Mass per Area
The area density (also known as areal density, surface density, or superficial density) of a two-dimensional object is calculated as the mass per unit area. The SI derived unit is: kilogram per square metre ($kg \cdot m^{-2}$).
Specific Energy
$\textit{Specific Energy}$ is defined as the energy per unit mass. Common metric units are $J/kg$. It is an intensive property. Contrast this with energy, which is an extensive property. There are two main types of specific energy: potential energy and specific kinetic energy. Others are the $\textit{gray}$ and $\textit{sievert}$, which are measures for the absorption of radiation. $$$$ The concept of specific energy applies to a particular or theoretical way of extracting useful energy from the material considered that is usually implied by context. These intensive properties are each symbolized by using the lower case letter of the symbol for the corresponding extensive property, which is symbolized by a capital letter. For example, the extensive thermodynamic property enthalpy is symbolized by $H$; specific enthalpy is symbolized by $h$.
$e = E/m$, where $E$ is energy and $m$ is mass.
1,000-fold of the SI derived unit newton divided by the square of the SI base unit metre
Absorbed Dose Rate
"Absorbed Dose Rate" is the absorbed dose of ionizing radiation imparted at a given location per unit of time (second, minute, hour, or day).
$\dot{D} = \frac{dD}{dt}$, where $dD$ is the increment of absorbed dose during time interval with duration $dt$.
Applicable units are those of quantitykind:AbsorbedDoseRate
Energy per Area
Energy per unit area is a measure of the energy either impinging upon or generated from a given unit of area. This can be a measure of the "toughness" of a material, being the amount of energy that needs to be applied per unit area of a crack to cause it to fracture. This is a constant for a given material..
Centibar
The bar is a non-SI unit of pressure, defined by the IUPAC as exactly equal to 100,000 Pa. It is about equal to the atmospheric pressure on Earth at sea level, and since 1982 the IUPAC has recommended that the standard for atmospheric pressure should be harmonized to $100,000\,Pa = 1 bar \approx 750.0616827 Torr$. Units derived from the bar are the megabar (symbol: Mbar), kilobar (symbol: kbar), decibar (symbol: dbar), centibar (symbol: cbar), and millibar (symbol: mbar or mb). They are not SI or cgs units, but they are accepted for use with the SI.
Conventional Centimetre Of Water
Conventional Centimeter Of Water
$\textit{Centimeter of Water}$ is a C.G.S System unit for 'Force Per Area' expressed as $cm_{H2O}$.
non SI conforming unit of pressure that corresponds to the static pressure generated by a water column with a height of 1 centimetre
non SI-conform unit of pressure, at which a value of 1 cmH₂O meets the static pressure, which is generated by a head of water at a temperature of 4 °C with a height of 1 centimetre
Centimetre Of Mercury
Centimeter Of Mercury
A non-SI-conforming unit of pressure, that corresponds with the static pressure generated by a mercury column with the height of 1 centimetre
non SI-conform unit of pressure, at which a value of 1 cmHg meets the static pressure, which is generated by a mercury at a temperature of 0 °C with a height of 1 centimetre
Dyne per Square Centimetre
Dyne per Square Centimeter
"Dyne per Square Centimeter" is a C.G.S System unit for 'Force Per Area' expressed as $dyn/cm^{2}$.
Fraction
Fraction is a unit for 'Dimensionless Ratio' expressed as the value of the ratio itself.
Foot of Water
"Foot of Water" is a unit for 'Force Per Area' expressed as $ftH2O$.
non SI-conform unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 ftH₂O is equivalent to the static pressure, which is generated by a head of water at a temperature 39.2°F with a height of 1 foot
Foot Of Mercury
A non-SI-conforming unit of pressure, at which 1 ftHg corresponds to the static pressure, which is excited by a mercury column with a height of 1 foot
Gram Force per Square Centimetre
Gram Force per Square Centimeter
Hectare
The customary metric unit of land area, equal to 100 ares. One hectare is a square hectometer, that is, the area of a square 100 meters on each side: exactly 10 000 square meters or approximately 107 639.1 square feet, 11 959.9 square yards, or 2.471 054 acres.
Inch of Water
Inches of water, wc, inch water column (inch WC), inAq, Aq, or inH2O is a non-SI unit for pressure. The units are by convention and due to the historical measurement of certain pressure differentials. It is used for measuring small pressure differences across an orifice, or in a pipeline or shaft. Inches of water can be converted to a pressure unit using the formula for pressure head. It is defined as the pressure exerted by a column of water of 1 inch in height at defined conditions for example $39 ^\circ F$ at the standard acceleration of gravity; 1 inAq is approximately equal to 249 pascals at $0 ^\circ C$.
non SI-conform unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 inH₂O meets the static pressure, which is generated by a head of water at a temperature of 39.2°F with a height of 1 inch
non SI-conform unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 inH₂O meets the static pressure, which is generated by a head of water at a temperature of 60°F with a height of 1 inch
Inch of Mercury
Inches of mercury, (inHg) is a unit of measurement for pressure. It is still widely used for barometric pressure in weather reports, refrigeration and aviation in the United States, but is seldom used elsewhere. It is defined as the pressure exerted by a column of mercury of 1 inch in height at $32 ^\circ F$ at the standard acceleration of gravity. 1 inHg = 3,386.389 pascals at $0 ^\circ C$.
non SI-conform unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 inHg meets the static pressure, which is generated by a mercury at a temperature of 32°F with a height of 1 inch
non SI-conform unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 inHg meets the static pressure, which is generated by a mercury at a temperature of 60°F with a height of 1 inch
Kilobar
The bar is a non-SI unit of pressure, defined by the IUPAC as exactly equal to 100,000 Pa. It is about equal to the atmospheric pressure on Earth at sea level, and since 1982 the IUPAC has recommended that the standard for atmospheric pressure should be harmonized to $100,000 Pa = 1 bar \approx 750.0616827 Torr$. Units derived from the bar are the megabar (symbol: Mbar), kilobar (symbol: kbar), decibar (symbol: dbar), centibar (symbol: cbar), and millibar (symbol: mbar or mb). They are not SI or cgs units, but they are accepted for use with the SI.
Kilogram Force per Square Centimetre
Kilogram Force per Square Centimeter
"Kilogram Force per Square Centimeter" is a unit for 'Force Per Area' expressed as $kgf/cm^{2}$.
Kilogram Force per Square Metre
Kilogram Force per Square Meter
Kilogram Force per Square Millimetre
Kilogram Force per Square Millimeter
Kilopascal Absolute
$\textit{Kilopascal Absolute}$ is a SI System unit for 'Force Per Area' expressed as $KPaA$.
Pound Force per Square Foot
Pounds or Pounds Force per Square Foot is a British (Imperial) and American pressure unit which is directly related to the psi pressure unit by a factor of 144 (1 sq ft = 12 in x 12 in = 144 sq in). 1 Pound per Square Foot equals 47.8803 Pascals. The psf pressure unit is mostly for lower pressure applications such as specifying building structures to withstand a certain wind force or rating a building floor for maximum weight load.
not SI-conform unit of pressure, whereas a value of 1 mH₂O is equivalent to the static pressure, which is produced by one metre high watercolumn
Megabar
Microatmospheres
Microbar
MicroTorr
"MicroTorr" is a unit for 'Force Per Area' expressed as $microtorr$.
Conventional Millimetre Of Water
Conventional Millimeter Of Water
unit of pressure - 1 mmH2O is the static pressure exerted by a water column with a height of 1 mm
Millimetre of Mercury - Absolute
Millimeter of Mercury - Absolute
Millimeters of Mercury inclusive of atmospheric pressure
MilliTorr
"MilliTorr" is a unit for 'Force Per Area' expressed as $utorr$.
Newton per Square Centimetre
Newton per Square Centimeter
derived SI unit newton divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Newton per Square Millimetre
Newton per Square Millimeter
SI derived unit newton divided by the 0.000001-fold of the power of the SI base unit metre with the exponent 2
Poundal per Square Foot
A $\textit{Poundal Per Square Foot}$, ($pdl/ft^2$), is a unit in the category of Pressure. It is also known as poundals per square foot, poundal/square foot. This unit is commonly used in the UK, US unit systems. A $\textit{Poundal Per Square Foot}$ has a dimension of $ML^{-1}T^{-2}$, where $M$ is mass, $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit $\textit{Pa}$ by multiplying its value by a factor of 1.488163944.
Planck Pressure
Electric
Emergency
Medium
Power
Specific Power
Specific power, also known as power-to-weight ratio, is the amount of power output per unit mass of the power source. It is generally used to measure the performance of that power source. The higher the ratio, the more power a system produces relative to its weight. It's commonly used in the automotive and aerospace industries to compare the performance of different engines. It's generally measured in watts per kilogram (W/kg) or horsepower per pound (hp/lb).
Power-to-Weight Ratio
Technical Atmosphere
The unit for $\textit{Technical Atmosphere}$, symbol: $at$, is a non-SI unit of pressure equal to one kilogram-force per square centimeter. The symbol $at$ clashes with that of the katal (symbol: $kat$), the SI unit of catalytic activity; a kilotechnical atmosphere would have the symbol $kat$, indistinguishable from the symbol for katal. It also clashes with that of the non-SI unit, the $attotonne$, but that unit would be more likely be rendered as the equivalent SI unit. Assay ton (abbreviation $AT$) is not a unit of measurement, but a standard quantity used in assaying ores of precious metals; it is $29 1D6 \,grams$ (short assay ton) or $32 2D3 \,grams$ (long assay ton), the amount which bears the same ratio to a milligram as a short or long ton bears to a troy ounce. In other words, the number of milligrams of a particular metal found in a sample of this size gives the number of troy ounces contained in a short or long ton of ore.
$1 at = 98.0665 kPa \approx 0.96784 standard atmospheres$
Barad
A barad is a dyne per square centimetre ($dyn \cdot cm^{-2}$), and is equal to $0.1 Pa $ ($1 \, micro \, bar$, $0.000014504 \, p.s.i.$). Note that this is precisely the microbar, the confusable bar being related in size to the normal atmospheric pressure, at $100\,dyn \cdot cm^{-2}$. Accordingly barad was not abbreviated, so occurs prefixed as in $cbarad = centibarad$. Despite being the coherent unit for pressure in c.g.s., barad was probably much less common than the non-coherent bar. Barad is sometimes called $barye$, a name also used for $bar$.
Barye
The barye, or sometimes barad, barrie, bary, baryd, baryed, or barie, is the centimetre-gram-second (CGS) unit of pressure. It is equal to 1 dyne per square centimetre.
Carat
The carat is a unit of mass equal to 200 mg and is used for measuring gemstones and pearls. The current definition, sometimes known as the metric carat, was adopted in 1907 at the Fourth General Conference on Weights and Measures, and soon afterward in many countries around the world. The carat is divisible into one hundred points of two milligrams each. Other subdivisions, and slightly different mass values, have been used in the past in different locations. In terms of diamonds, a paragon is a flawless stone of at least 100 carats (20 g). The ANSI X.12 EDI standard abbreviation for the carat is $CD$.
Centigram
0,000 01-fold of the SI base unit kilogram
Dram (UK)
non SI-conforming unit of mass comes from the Anglo-American Troy or Apothecaries' Weight System of units which is mainly used in England, in the Netherlands and in the USA as a commercial weight
Dram (US)
non SI-conform unit of the mass according to the avoirdupois system of units: 1 dram (av. ) = 1/16 ounce (av. ) = 1/256 pound (av.)
Decagram
Decibar
Decigram
0.0001-fold of the SI base unit kilogram
Earth mass
Earth mass ($M_{\oplus}$) is the unit of mass equal to that of the Earth. In SI Units, $1 M_{\oplus} = 5.9722 \times 10^{24} kg$. Earth mass is often used to describe masses of rocky terrestrial planets. The four terrestrial planets of the Solar System, Mercury, Venus, Earth, and Mars, have masses of 0.055, 0.815, 1.000, and 0.107 Earth masses respectively.
One Earth mass can be converted to related units: 81.3 Lunar mass (ML) 0.00315 Jupiter mass (MJ) (Jupiter has 317.83 Earth masses)[1] 0.0105 Saturn mass (Saturn has 95.16 Earth masses)[3] 0.0583 Neptune mass (Neptune has 17.147 Earth masses)[4] 0.000 003 003 Solar mass ($M_{\odot}$) (The Sun has 332946 Earth masses)
Hectobar
Pound Troy
An obsolete unit of mass; the Troy Pound has been defined as exactly 5760 grains, or 0.3732417216 kg. A Troy Ounce is 1/12th of a Troy Pound.
Lunar mass
unit momme (pearl) specifically expresses the mass of cultured pearls
unit momme (textile) specifically express the weight of one square metre of silk
Millimetre of Mercury
Millimeter of Mercury
The millimeter of mercury is defined as the pressure exerted at the base of a column of fluid exactly 1 mm high, when the density of the fluid is exactly $13.5951 g/cm^{3}$, at a place where the acceleration of gravity is exactly $9.80665 m/s^{2}$.
Ounce Troy
An obsolete unit of mass; the Troy Ounce is 1/12th of a Troy Pound. Based on the international definition of a Troy Pound as 5760 grains, the Troy Ounce is exactly 480 grains, or 0.0311034768 kg.
non SI-conform unit of the pressure according to the Imperial system of units (poundal by square inch)
Quarter (UK)
unit of the mass according to the avoirdupois system of units: 1 qr. l. = 28 lb
Revolution
"Revolution" is a unit for 'Plane Angle' expressed as $rev$.
Solar mass
The astronomical unit of mass is the solar mass.The symbol $S$ is often used in astronomy to refer to this unit, although $M_{\odot}$ is also common. The solar mass, $1.98844 \times 10^{30} kg$, is a standard way to express mass in astronomy, used to describe the masses of other stars and galaxies. It is equal to the mass of the Sun, about 333,000 times the mass of the Earth or 1,048 times the mass of Jupiter. In practice, the masses of celestial bodies appear in the dynamics of the solar system only through the products GM, where G is the constant of gravitation.
Stone (UK)
unit of the mass which is commonly used for the determination of the weight of living beings regarding to the conversion to the avoirdupois system of units: 1 st = 14 lb (av)
Assay Ton
In the United States, a unit of mass, approximately $29.167\, grams$. The number of milligrams of precious metal in one assay ton of the ore being tested is equal to the number of troy ounces of pure precious metal in one 2000-pound ton of the ore. i.e. a bead is obtained that weights 3 milligrams, thus the precious metals in the bead would equal three troy ounces to each ton of ore with the understanding that this varies considerably in the real world as the amount of precious values in each ton of ore varies considerably.
مساحة
Площ
plocha
Fläche
Ταχύτητα
área
مساحت
aire
שטח
क्षेत्रफल
面積
Keluasan
pole powierzchni
arie
Площадь
površina
alan
面积
Area is a quantity expressing the two-dimensional size of a defined part of a surface, typically a region bounded by a closed curve.
superficie
Thermal Energy
"Thermal Energy" is the portion of the thermodynamic or internal energy of a system that is responsible for the temperature of the system. From a macroscopic thermodynamic description, the thermal energy of a system is given by its constant volume specific heat capacity C(T), a temperature coefficient also called thermal capacity, at any given absolute temperature (T): $U_{thermal} = C(T) \cdot T$.
Long Hundred Weight
"Hundred Weight - Long" is a unit for 'Mass' expressed as $cwt$.
Hundred Weight - Short
"Hundred Weight - Short" is a unit for 'Mass' expressed as $cwt$.
Decapascal
DeciTonne
Metric DeciTON
Hundredweight (UK)
out of use unit of the mass according to the Imperial system of units
Hundredweight (US)
Kip per Square Inch
"Kip per Square Inch" is a unit for 'Force Per Area' expressed as $kip/in^{2}$.
Kilopound Force per Square Inch
1 000-fold of the unit for pressure psi as a compounded unit pound-force according to the Anglo-American system of units divided by the power of the unit Inch according to the Anglo-American and Imperial system of units by exponent 2
Metric KiloTON
1 000 000-fold of the SI base unit kilogram
Pound Mass
A pound of mass, based on the international standard definition of the pound of mass as exactly 0.45359237 kg.
MPSI
Megapounds of force per square inch is a unit for pressure in the Anglo-American system of units.
Micropascal
0.000001-fold of the SI derived unit pascal
Ounce Mass
An ounce of mass is 1/16th of a pound of mass, based on the international standard definition of the pound as exactly 0.45359237 kg.
Planck Mass
Band
ICT
وحدة القوة في نظام متر كيلوغرام ثانية
сила
Síla
Kraft
Δύναμη
force
fuerza
نیرو
כוח
erő
forza
vis
Daya
siła
força
forță
Сила
sila
kuvvet
"Force" is an influence that causes mass to accelerate. It may be experienced as a lift, a push, or a pull. Force is defined by Newton's Second Law as $F = m \times a $, where $F$ is force, $m$ is mass and $a$ is acceleration. Net force is mathematically equal to the time rate of change of the momentum of the body on which it acts. Since momentum is a vector quantity (has both a magnitude and direction), force also is a vector quantity.
$F = \frac{dp}{dt}$, where $F$ is the resultant force acting on a body, $p$ is momentum of a body, and $t$ is time.
भार
Standard Atmosphere
The unit for $\textit{Standard Atmosphere}$, symbol: $atm$, is an international reference pressure defined as $101.325 \,kPa$ and formerly used as unit of pressure. For practical purposes it has been replaced by the bar which is $100 kPa$. The difference of about 1% is not significant for many applications, and is within the error range of common pressure gauges.
Penny Weight
"Penny Weight" is a unit for 'Mass' expressed as $dwt$.
FemtoGram
Gigapascal
1,000,000,000-fold of the SI derived unit pascal
1 000 000 000-fold of the SI derived unit pascal
هرتز
херц
hertz
Hertz
χερτζ
hercio
הרץ
हर्ट्ज
ヘルツ
hertzium
herc
герц
赫兹
$\textit{Hertz}$ (symbol $Hz$) is the SI unit of frequency defined as the number of cycles per second of a periodic phenomenon. One of its most common uses is the description of the sine wave, particularly those used in radio and audio applications, such as the frequency of musical tones. The word $\bf{hertz}$ is named for Heinrich Rudolf Hertz, who was the first to conclusively prove the existence of electromagnetic waves.
Hectogram
Kilograms per metre square second
The SI unit of pressure. The pascal is the standard pressure unit in the MKS metric system, equal to one newton per square meter or one "kilogram per meter per second per second." The unit is named for Blaise Pascal (1623-1662), French philosopher and mathematician, who was the first person to use a barometer to measure differences in altitude.
KiloTonne
Pound Force per Square Inch
"Pound Force per Square Inch" is an Imperial unit for 'Force Per Area' expressed as $psia$.
متر مكعب
кубичен метър
metr krychlový
Kubikmeter
κυβικό μετρο
cubic metre
Cubic Meter
metro cúbico
متر مکعب
mètre cube
מטר מעוקב
metro cubo
立方メートル
metrum cubicum
meter kubik
metr sześcienny
metru cub
кубический метр
kubični meter
metreküp
立方米
The SI unit of volume, equal to 1.0e6 cm3, 1000 liters, 35.3147 ft3, or 1.30795 yd3. A cubic meter holds about 264.17 U.S. liquid gallons or 219.99 British Imperial gallons.
Newtons per Square Metre
Newtons per Square Meter
Long Ton
Long ton (weight ton or imperial ton) is the name for the unit called the "ton" in the avoirdupois or Imperial system of measurements, as used in the United Kingdom and several other Commonwealth countries. One long ton is equal to 2,240 pounds (1,016 kg), 1.12 times as much as a short ton, or 35 cubic feet (0.9911 m3) of salt water with a density of 64 lb/ft3 (1.025 g/ml). It has some limited use in the United States, most commonly in measuring the displacement of ships, and was the unit prescribed for warships by the Washington Naval Treaty 1922-for example battleships were limited to a mass of 35,000 long tons (36,000 t; 39,000 short tons).
Torr
The \textit{torr} is a non-SI unit of pressure with the ratio of 760 to 1 standard atmosphere, chosen to be roughly equal to the fluid pressure exerted by a millimeter of mercury, i.e. , a pressure of 1 torr is approximately equal to one millimeter of mercury. Note that the symbol (Torr) is spelled exactly the same as the unit (torr), but the letter case differs. The unit is written lower-case, while the symbol of the unit (Torr) is capitalized (as upper-case), as is customary in metric units derived from names. Thus, it is correctly written either way, and is only incorrect when specification is first made that the word is being used as a unit, or else a symbol of the unit, and then the incorrect letter case for the specified use is employed.
Differential Pressure
Atomic mass unit
The $\textit{Unified Atomic Mass Unit}$ (symbol: $\mu$) or $\textit{dalton}$ (symbol: Da) is a unit that is used for indicating mass on an atomic or molecular scale. It is defined as one twelfth of the rest mass of an unbound atom of carbon-12 in its nuclear and electronic ground state, and has a value of $1.660538782(83) \times 10^{-27} kg$. One $Da$ is approximately equal to the mass of one proton or one neutron. The CIPM have categorised it as a $\textit{"non-SI unit whose values in SI units must be obtained experimentally"}$.
Megagram
Ton (UK)
traditional Imperial unit for mass of cargo, especially in the shipping sector
unit of the mass according to the Imperial system of units
Unified Atomic Mass Unit
The unified atomic mass unit (symbol: $u$) or dalton (symbol: $Da$) is the standard unit that is used for indicating mass on an atomic or molecular scale (atomic mass). It is defined as one twelfth of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state,[ and has a value of $1.660538921(73) \times 10^{-27} kg$. One dalton is approximately equal to the mass of one nucleon; an equivalence of saying $1 g mol^{-1}$. The CIPM have categorised it as a 'non-SI unit' because units values in SI units must be obtained experimentally.
Energy
Integral
Mode
Storage
Power Per Area
الضغط أو الإجهاد
Налягане
Tlak
Druck
Πίεση - τάση
pressure
presión
فشار، تنش
pression
לחץ
दबाव
nyomás
pressione
圧力
pressio
Tekanan
ciśnienie
pressão
presiune
Давление
tlak
basınç
压强、压力
Pressure is an effect which occurs when a force is applied on a surface. Pressure is the amount of force acting on a unit area. Pressure is distinct from stress, as the former is the ratio of the component of force normal to a surface to the surface area. Stress is a tensor that relates the vector force to the vector area.
$p = \frac{dF}{dA}$, where $dF$ is the force component perpendicular to the surface element of area $dA$.
механично напрежение
दाब
tensione meccanica
tegasan
naprężenie
tensão
tensiune mecanică
pritisk
Millibar
PicoPascal
Ton
2,000-fold of the Imperial base unit pouund
2,000-fold of the Imperial base unit pound
Grain
A grain is a unit of measurement of mass that is nominally based upon the mass of a single seed of a cereal. The grain is the only unit of mass measure common to the three traditional English mass and weight systems; the obsolete Tower grain was, by definition, exactly /64 of a troy grain. Since 1958, the grain or troy grain measure has been defined in terms of units of mass in the International System of Units as precisely 64.79891 milligrams. Thus, $1 gram \approx 15.4323584 grains$. There are precisely 7,000 grains per avoirdupois pound in the imperial and U.S. customary units, and 5,760 grains in the Troy pound.
Picograms
10**-12 grams or one 10**-15 of the SI standard unit of mass (kilogram).
Ton (US)
A ton is a unit of mass in the US customary system, where 1 ton is equal to 2000 pounds of mass.
Room
Base class for all more specific room types.
Brick location classes are being phased out in favor of RealEstateCore classes. For a replacement, consider rec:Room
Off
Proportional
Safety
NOTE: The valid combinations of error-class and error-code are defined in Clause 18.
Other services to be added as they are defined. All choice values in this production are reserved for prototype by ASHRAE. See Clause 23.
%Enumerated values 0-63 are reserved for prototype by ASHRAE. Enumerated values 64-65535 may be used by others subject to the procedures and constraints described in Clause 23
الشحنة الكهربائية
Електрически заряд
Elektrický náboj
elektrische Ladung
Ηλεκτρικό φορτίο
electric charge
carga eléctrica
بار الکتریکی
Charge électrique
מטען חשמלי
विद्युत आवेग या विद्युत बहाव
elektromos töltés
carica elettrica
電荷
onus electricum
Cas elektrik
ładunek elektryczny
carga elétrica
sarcină electrică
Электрический заряд
električni naboj
elektrik yükü
电荷
"Electric Charge" is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interaction. Electrically charged matter is influenced by, and produces, electromagnetic fields. The electric charge on a body may be positive or negative. Two positively charged bodies experience a mutual repulsive force, as do two negatively charged bodies. A positively charged body and a negatively charged body experience an attractive force. Electric charge is carried by discrete particles and can be positive or negative. The sign convention is such that the elementary electric charge $e$, that is, the charge of the proton, is positive. The SI derived unit of electric charge is the coulomb.
$dQ = Idt$, where $I$ is electric current.
cantitate de electricitate
Linear Velocity
Linear Velocity, as the name implies deals with speed in a straight line, the units are often $km/hr$ or $m/s$ or $mph$ (miles per hour). Linear Velocity (v) = change in distance/change in time, where $v = \bigtriangleup d/\bigtriangleup t$
Applicable units are those of quantitykind:LinearVelocity
Degree Rankine
The unit $\textit{Degree Rankine}$ is a thermodynamic (absolute) temperature scale. The symbol for degrees Rankine is $^\circ R$ or $^\circ Ra$ if necessary to distinguish it from the Rømer and Réaumur scales). Zero on both the Kelvin and Rankine scales is absolute zero, but the Rankine degree is defined as equal to one degree Fahrenheit, rather than the one degree Celsius used by the Kelvin scale. A temperature of $-459.67 ^\circ F$ is exactly equal to $0 ^\circ R$.
Gallon (UK)
US Gallon
"US Gallon" is a unit for 'Liquid Volume' expressed as $galUS$.
Degree
A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by $^\circ$ (the degree symbol), is a measurement of plane angle, representing 1/360 of a full rotation; one degree is equivalent to $2\pi /360 rad$, $0.017453 rad$. It is not an SI unit, as the SI unit for angles is radian, but is an accepted SI unit.
Hartree
The $\textit{Hartree}$ (symbol: $E_h$ or $Ha$), also known as the $\text{Hartree\,Energy}$, is the atomic unit of energy. The hartree energy is equal to the absolute value of the electric potential energy of the hydrogen atom in its ground state. The energy of the electron in an H-atom in its ground state is $-E_H$, where $E_H= 2 R_\infty \cdot hc_0$. The 2006 CODATA recommended value was $E_H = 4.35974394(22) \times 10^{-18} J = 27.21138386(68) eV$. Definition: $E_H= \frac{e^2}{4\pi \epsilon_0 a_0 }$ where, $e$ is the elementary charge, $\epsilon_0$ is the electric constant, and $a_0$ is the Bohr radius.'
Foot Poundal
"Foot Poundal" is an Imperial unit for 'Energy And Work' expressed as $ft-pdl$.
Femtojoule
0,000 000 000 000 001-fold of the derived SI unit joule
0.000000000000001-fold of the derived SI unit joule
Gigawatt Hour
A $\textit{Gigawatt Hour}$ is the 1,000,000,000-fold of the product of the SI derived unit watt and the unit hour.
1 000 000 000-fold of the product of the SI derived unit watt and the unit hour
Kilopascal
Kilopascal is a unit of pressure. 1 kPa is approximately the pressure exerted by a 10-g mass resting on a 1-cm2 area. 101.3 kPa = 1 atm. There are 1,000 pascals in 1 kilopascal.
Megaton of Oil Equivalent
The tonne of oil equivalent (toe) is a unit of energy: the amount of energy released by burning one tonne of crude oil, approximately 42 GJ (as different crude oils have different calorific values, the exact value of the toe is defined by convention; unfortunately there are several slightly different definitions as discussed below). The toe is sometimes used for large amounts of energy, as it can be more intuitive to visualise, say, the energy released by burning 1000 tonnes of oil than 42,000 billion joules (the SI unit of energy). Multiples of the toe are used, in particular the megatoe (Mtoe, one million toe) and the gigatoe (Gtoe, one billion toe).
Millilitre
Planck Energy
In physics, the unit of energy in the system of natural units known as Planck units is called the Planck energy, denoted by $E_P$. $E_P$ is a derived, as opposed to basic, Planck unit. An equivalent definition is:$E_P = \hbar / T_P$ where $T_P$ is the Planck time. Also: $E_P = m_P c^2$ where $m_P$ is the Planck mass.
$E_\rho = \sqrt{\frac{ \hbar c^5}{G}} \approx 1.936 \times 10^9 J \approx 1.22 \times 10^{28} eV \approx 0.5433 MWh$, where $c$ is the speed of light in a vacuum, $\hbar$ is the reduced Planck's constant, and $G$ is the gravitational constant.
Quad
A $\textit{quad}$ is a unit of energy equal to $10 BTU$, or $1.055 \times 10\,\text{joule}$, which is $1.055 exajoule$ or $EJ$ in SI units. The unit is used by the U.S. Department of Energy in discussing world and national energy budgets. Some common types of an energy carrier approximately equal 1 quad are: 8,007,000,000 Gallons (US) of gasoline, 293,083,000,000 Kilowatt-hours (kWh), 36,000,000 Tonnes of coal, 970,434,000,000 Cubic feet of natural gas, 5,996,000,000 UK gallons of diesel oil, 25,200,000 Tonnes of oil, 252,000,000 tonnes of TNT which is five times the energy of the Tsar Bomba nuclear test.
Terawatt Hour
1,000,000,000,000-fold of the product of the SI derived unit watt and the unit hour
Ton Energy
Watt Second
product of the SI derived unit watt and SI base unit second
Command
A Command is an output point that directly determines the behavior of equipment and/or affects relevant operational points.
Attojoule
The $\textit{AttoJoule}$ is 0,000 000 000 000 000 001-fold of the derived SI unit $joule$.
0.000000000000000001-fold of the derived SI unit joule
Exajoule
1 000 000 000 000 000 000-fold of the derived SI unit joule
1,000,000,000,000,000,000-fold of the derived SI unit joule
Giga Electron Volt
"Giga Electron Volt" is a unit for 'Energy And Work' expressed as $GeV$.
Kilo Electron Volt
"Kilo Electron Volt" is a unit for 'Energy And Work' expressed as $keV$.
Mikrojoule
Micro Joule
0.000001-fold of the SI derived unit joule
Petajoule
1,000,000,000,000,000-fold of the derived SI unit joule
Ton of Oil Equivalent
Short Ton
The short ton is a unit of mass equal to 2,000 pounds (907.18474 kg). In the United States it is often called simply ton without distinguishing it from the metric ton (tonne, 1,000 kilograms / 2,204.62262 pounds) or the long ton (2,240 pounds / 1,016.0469088 kilograms); rather, the other two are specifically noted. There are, however, some U.S. applications for which unspecified tons normally means long tons.
Terajoule
1 000 000 000 000-fold of the SI derived unit joule
1,000,000,000,000-fold of the SI derived unit joule
product of the volt ampere and the unit hour
HVAC Equipment
Relationship
Super-property of all Brick relationships between entities (Equipment, Location, Point)
Hectopascal
Hectopascal is a unit of pressure. 1 Pa is approximately the pressure exerted by a 10-g mass resting on a 1-cm2 area. 1013 hPa = 1 atm. There are 100 pascals in 1 hectopascal.
Hectopascal is commonly used in meteorology to report values for atmospheric pressure. It is equivalent to millibar.
Megapascal
1,000,000-fold of the derived unit pascal
Slug
The slug is a unit of mass associated with Imperial units. It is a mass that accelerates by $1 ft/s$ when a force of one pound-force ($lbF$) is exerted on it. With standard gravity $gc = 9.80665 m/s$, the international foot of $0.3048 m$ and the avoirdupois pound of $0.45359237 kg$, one slug therefore has a mass of approximately $32.17405 lbm$ or $14.593903 kg$. At the surface of the Earth, an object with a mass of 1 slug exerts a force of about $32.17 lbF$ or $143 N$.
Enable
Foot Pound Force
"Foot Pound Force" is an Imperial unit for 'Energy And Work' expressed as $ft-lbf$.
Kilo British Thermal Unit (Thermochemical Definition)
Mega Electron Volt
$\textit{Mega Electron Volt}$ is a unit for 'Energy And Work' expressed as $MeV$.
Millijoule
Millipascal
0.001-fold of the SI derived unit pascal
unit of heat energy in commercial use, within the EU defined: 1 thm (EC) = 100 000 BtuIT
THM_EEC
devices that serve all or part of the building and may include electric power, lighting, transportation, or service water heating, including, but not limited to, furnaces, boilers, air conditioners, heat pumps, chillers, water heaters, lamps, luminaires, ballasts, elevators, escalators, or other devices or installations.
Instances of Equipment cannot be Locations.
Instances of Equipment cannot be Substances.
Instances of Equipment cannot be Quantities.
Instances of Equipment cannot be Collections.
Instances of Equipment cannot be Points.
Instances of Equipment cannot be EntityProperties.
A piece of Equipment's parts should be always other Equipment.
Equipment can be part of a Collection, System or other Equipment.
A piece of Equipment can be located only at a Location/Space
A piece of Equipment can feed a Equipment or Location/Space.
Status
A Status is input point that reports the current operating mode, state, position, or condition of an item. Statuses are observations and should be considered 'read-only'
التردد لدى نظام الوحدات الدولي
Честота
Frekvence
Frequenz
Συχνότητα
frequency
frecuencia
بسامد
fréquence
תדירות
आवृत्ति
frekvencia
frequenza
周波数
frequentia
Frekuensi
częstotliwość
frequência
frecvență
Частота
frekvenca
frekans
频率
"Frequency" is the number of occurrences of a repeating event per unit time. The repetition of the events may be periodic (that is. the length of time between event repetitions is fixed) or aperiodic (i.e. the length of time between event repetitions varies). Therefore, we distinguish between periodic and aperiodic frequencies. In the SI system, periodic frequency is measured in hertz (Hz) or multiples of hertz, while aperiodic frequency is measured in becquerel (Bq). In spectroscopy, $\nu$ is mostly used. Light passing through different media keeps its frequency, but not its wavelength or wavenumber.
$f = 1/T$, where $T$ is a period. Alternatively, $\nu = 1/T$
Kilo British Thermal Unit (International Definition)
Kilowatthour
The kilowatt hour, or kilowatt-hour, (symbol $kW \cdot h$, $kW h$ or $kWh$) is a unit of energy equal to 1000 watt hours or 3.6 megajoules. For constant power, energy in watt hours is the product of power in watts and time in hours. The kilowatt hour is most commonly known as a billing unit for energy delivered to consumers by electric utilities.
Megawatt Hour
1,000,000-fold of the product of the SI derived unit watt and the unit hour
1 000 000-fold of the product of the SI derived unit watt and the unit hour
Nanogram
10**-9 grams or one 10**-12 of the SI standard unit of mass (kilogram).
Therm US
$\textit{Therm}$ (symbol $thm$) is a non-SI unit of heat energy. It was defined in the United States in 1968 as the energy equivalent of burning 100 cubic feet of natural gas at standard temperature and pressure. In the US gas industry its SI equivalent is defined as exactly $100,000 BTU59^{\circ}{F}$ or $105.4804 megajoules$. Public utilities in the U.S. use the therm unit for measuring customer usage of gas and calculating the monthly bills.
Watthour
The watt hour is a unit of energy, equal to 3,600 joule.
Deadband
Time
Unit
Gigajoule
1,000,000,000-fold of the SI derived unit joule
1 000 000 000-fold of the SI derived unit joule
Year
A year is any of the various periods equated with one passage of Earth about the Sun, and hence of roughly 365 days. The familiar calendar has a mixture of 365- and 366-day years, reflecting the fact that the time for one complete passage takes about 365¼ days; the precise value for this figure depends on the manner of defining the year.
value
Mass Flow Rate
"Mass Flow Rate" is a measure of Mass flux. The common symbol is $\dot{m}$ (pronounced $m-dot$), although sometimes $\mu$ is used. The SI units are $kg s-1$.
$q_m = \frac{dm}{dt}$, where $m$ is mass and $t$ is time.
Applicable units are those of quantitykind:MassFlowRate
International Table calorie
Exhaust
High
Max
Min
Megajoule
1,000,000-fold of the derived unit joule
راديان
радиан
radián
ακτίνιο
radian
رادیان
רדיאן
radiante
ラジアン
radiano
radyan
The radian is the standard unit of angular measure, used in many areas of mathematics. It describes the plane angle subtended by a circular arc as the length of the arc divided by the radius of the arc. In the absence of any symbol radians are assumed, and when degrees are meant the symbol $^{\ circ}$ is used.
The radian is the standard unit of angular measure, used in many areas of mathematics. It describes the plane angle subtended by a circular arc as the length of the arc divided by the radius of the arc. The unit was formerly a SI supplementary unit, but this category was abolished in 1995 and the radian is now considered a SI derived unit. The SI unit of solid angle measurement is the steradian. The radian is represented by the symbol "rad" or, more rarely, by the superscript c (for "circular measure"). For example, an angle of 1.2 radians would be written as "1.2 rad" or "1.2c" (the second symbol is often mistaken for a degree: "1.2u00b0"). As the ratio of two lengths, the radian is a "pure number" that needs no unit symbol, and in mathematical writing the symbol "rad" is almost always omitted. In the absence of any symbol radians are assumed, and when degrees are meant the symbol u00b0 is used. [Wikipedia]
The radian and steradian are special names for the number one that may be used to convey information about the quantity concerned. In practice the symbols rad and sr are used where appropriate, but the symbol for the derived unit one is generally omitted in specifying the values of dimensionless quantities.
Air
the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen.
Low
Occupied
Unoccupied
السرعة
Rychlost
Geschwindigkeit
Επιφάνεια
velocity
velocidad
سرعت/تندی
vitesse
מהירות
गति
velocità
速力
velocitas
Halaju
prędkość
velocidade
viteză
Ско́рость
hitrost
hız
速度
In kinematics, velocity is the speed of an object and a specification of its direction of motion. Speed describes only how fast an object is moving, whereas velocity gives both how fast and in what direction the object is moving.
rapidez
वेग
Kilojoule
Erg
An erg is the unit of energy and mechanical work in the centimetre-gram-second (CGS) system of units, symbol 'erg'. Its name is derived from the Greek ergon, meaning 'work'. An erg is the amount of work done by a force of one dyne exerted for a distance of one centimeter. In the CGS base units, it is equal to one gram centimeter-squared per second-squared ($g \cdot cm^2/s^2$). It is thus equal to $10^{-7}$ joules or 100 nanojoules in SI units. $1 erg = 10^{-7} J = 100 nJ$, $1 erg = 624.15 GeV = 6.2415 \times 10^{11} eV$, $1 erg = 1 dyne\cdot cm = 1 g \cdot cm^2/s^2$.
Microgram
0.000000001-fold of the SI base unit kilogram
Shed
Dimensionless
In dimensional analysis, a dimensionless quantity or quantity of dimension one is a quantity without an associated physical dimension. It is thus a "pure" number, and as such always has a dimension of 1. Dimensionless quantities are widely used in mathematics, physics, engineering, economics, and in everyday life (such as in counting). Numerous well-known quantities, such as $\pi$, $\epsilon$, and $\psi$, are dimensionless. By contrast, non-dimensionless quantities are measured in units of length, area, time, etc. Dimensionless quantities are often defined as products or ratios of quantities that are not dimensionless, but whose dimensions cancel out when their powers are multiplied.
Kilocalorie
A $\textit{Kilocalorie}$ is a unit for $\textit{Energy And Work}$ expressed as $kcal$.
Parts per billion
Metric Ton
The tonne (SI unit symbol: t) is a metric system unit of mass equal to 1,000 kilograms (2,204.6 pounds). It is a non-SI unit accepted for use with SI. To avoid confusion with the ton, it is also known as the metric tonne and metric ton in the United States[3] and occasionally in the United Kingdom. In SI units and prefixes, the tonne is a megagram (Mg), a rarely-used symbol, easily confused with mg, for milligram.
Electron Volt
An electron volt (eV) is the energy that an electron gains when it travels through a potential of one volt. You can imagine that the electron starts at the negative plate of a parallel plate capacitor and accelerates to the positive plate, which is at one volt higher potential. Numerically $1 eV$ approximates $1.6x10^{-19} joules$, where $1 joule$ is $6.2x10^{18} eV$. For example, it would take $6.2x10^{20} eV/sec$ to light a 100 watt light bulb.
Parts per million
Sensor
A Sensor is an input point that represents the value of a device or instrument designed to detect and measure a variable (ASHRAE Dictionary).
Return
Thermochemical Calorie
The energy needed to increase the temperature of a given mass of water by $1 ^\circ C$ at atmospheric pressure depends on the starting temperature and is difficult to measure precisely. Accordingly, there have been several definitions of the calorie. The two perhaps most popular definitions used in older literature are the $15 ^\circ C$ calorie and the thermochemical calorie.
Last known value
The last known value of the Point entity
Condenser
astronomical-unit
An $\textit{astronomical unit}$, abbreviated as $AU$, $au$, $a.u.$, or $ua$ is a unit of length equal to $149,597,870,700\, metres$ ($92,955,807.273\, mi$) or approximately the mean Earth Sun distance.
An astronomical unit (abbreviated as AU, au, a.u., or ua) is a unit of length equal to 149,597,870,700 metres (92,955,807.273 mi) or approximately the mean Earth Sun distance. The symbol ua is recommended by the International Bureau of Weights and Measures, and the international standard ISO 80000, while au is recommended by the International Astronomical Union, and is more common in Anglosphere countries. In general, the International System of Units only uses capital letters for the symbols of units which are named after individual scientists, while au or a.u. can also mean atomic unit or even arbitrary unit. However, the use of AU to refer to the astronomical unit is widespread. The astronomical constant whose value is one astronomical unit is referred to as unit distance and is given the symbol A. [Wikipedia]
British Thermal Unit (international Table) per Pound of Force
Unit of heat energy according to the Imperial system of units divided by the unit avoirdupois pound of force according to the avoirdupois system of units
chain
A chain is a unit of length. It measures 66 feet, or 22 yards, or 100 links, or 4 rods. There are 10 chains in a furlong, and 80 chains in one statute mile. An acre is the area of 10 square chains (that is, an area of one chain by one furlong). The chain has been used for several centuries in Britain and in some other countries influenced by British practice.
unit of the length according the Anglo-American system of units
Fathom
A fathom = 1.8288 meters, is a unit of length in the imperial and the U.S. customary systems, used especially for measuring the depth of water. There are two yards in an imperial or U.S. fathom. Originally based on the distance between the man's outstretched arms, the size of a fathom has varied slightly depending on whether it was defined as a thousandth of an (Admiralty) nautical mile or as a multiple of the imperial yard. Abbreviations: f, fath, fm, fth, fthm.
Furlong
A furlong is a measure of distance in imperial units and U.S. customary units equal to one-eighth of a mile, equivalent to 220 yards, 660 feet, 40 rods, or 10 chains. The exact value of the furlong varies slightly among English-speaking countries. Five furlongs are approximately 1 kilometre (1.0058 km is a closer approximation). Since the original definition of the metre was one-quarter of one ten-millionth of the circumference of the Earth (along the great circle coincident with the meridian of longitude passing through Paris), the circumference of the Earth is about 40,000 km or about 200,000 furlongs.
Check if this is US-Survey or International Customary definition (multiplier)
Long Furlong
French Gauge
unit for the diameter of thin tubes in the medical technology (e.g. catheter) and telecommunications engineering (e.g. fiberglasses).
unit for the diameter of urological instruments and catheters for different purposes corresponding to: 1 Ch = 0,333 333 333 10 ⁻ ³ m
Hectometre
Hectometer
Light Year
A unit of length defining the distance, in meters, that light travels in a vacuum in one year.
Mil Length
"Mil Length" is a C.G.S System unit for 'Length' expressed as $mil$.
Milli-inch
0.001-fold of the unit inch according to the Anglo-American and Imperial system of units
thou
mil
Parsec
The parsec (parallax of one arcsecond; symbol: pc) is a unit of length, equal to just under 31 trillion ($31 \times 10^{12}$) kilometres (about 19 trillion miles), 206265 AU, or about 3.26 light-years. The parsec measurement unit is used in astronomy. It is defined as the length of the adjacent side of an imaginary right triangle in space. The two dimensions that specify this triangle are the parallax angle (defined as 1 arcsecond) and the opposite side (defined as 1 astronomical unit (AU), the distance from the Earth to the Sun). Given these two measurements, along with the rules of trigonometry, the length of the adjacent side (the parsec) can be found.
Pica
A pica is a typographic unit of measure corresponding to 1/72 of its respective foot, and therefore to 1/6 of an inch. The pica contains 12 point units of measure. Notably, Adobe PostScript promoted the pica unit of measure that is the standard in contemporary printing, as in home computers and printers. Usually, pica measurements are represented with an upper-case 'P' with an upper-right-to-lower-left virgule (slash) starting in the upper right portion of the 'P' and ending at the lower left of the upright portion of the 'P'; essentially drawing a virgule (/) through a 'P'. Note that these definitions are different from a typewriter's pica setting, which denotes a type size of ten characters per horizontal inch.
In typography, a point is the smallest unit of measure, being a subdivision of the larger pica. It is commonly abbreviated as pt. The point has long been the usual unit for measuring font size and leading and other minute items on a printed page.
Planck Length
In physics, the Planck length, denoted $\ell_P$, is a unit of length, equal to $1.616199(97)×10^{-35}$ metres. It is a base unit in the system of Planck units. The Planck length can be defined from three fundamental physical constants: the speed of light in a vacuum, Planck's constant, and the gravitational constant.
$\ell_P = \sqrt{\frac{ \hbar G}{c^3}} \approx 1.616199(97)) \times 10^{-35} m$, where $c$ is the speed of light in a vacuum, $\hbar$ is the reduced Planck's constant, and $G$ is the gravitational constant. The two digits enclosed by parentheses are the estimated standard error associated with the reported numerical value.
Rod
A unit of distance equal to 5.5 yards (16 feet 6 inches).
فولت
волт
volt
Volt
βολτ
voltio
ولت
וולט
वोल्ट
ボルト
voltium
wolt
вольт
伏特
$\textit{Volt}$ is the SI unit of electric potential. Separating electric charges creates potential energy, which can be measured in energy units such as joules. Electric potential is defined as the amount of potential energy present per unit of charge. Electric potential is measured in volts, with one volt representing a potential of one joule per coulomb of charge. The name of the unit honors the Italian scientist Count Alessandro Volta (1745-1827), the inventor of the first battery. The volt also may be expressed with a variety of other units. For example, a volt is also equal to one watt per ampere ($W/A$) and one joule per ampere per second ($J/A/s$).
$\textit{V}\ \equiv\ \text{volt}\ \equiv\ \frac{\text{J}}{\text{C}}\ \equiv\ \frac{\text{joule}}{\text{coulomb}}\ \equiv\ \frac{\text{W.s}}{\text{C}}\ \equiv\ \frac{\text{watt.second}}{\text{coulomb}}\ \equiv\ \frac{\text{W}}{\text{A}}\ \equiv\ \frac{\text{watt}}{\text{amp}}$
length measure corresponding to the imperial unit "inch"
Has unit
The QUDT unit associated with this Brick entity (usually a Brick Point instance or Entity Property)
Humidity
Decametre
Decameter
fermi
The $\textit{fermi}$, or $\textit{femtometer}$ (other spelling $femtometre$, symbol $fm$) is an SI unit of length equal to $10^{-15} metre$. This distance is often encountered in nuclear physics as a characteristic of this scale. The symbol for the fermi is also $fm$.
US Survey Foot
The U.S. Survey Foot was officially deprecated on December 31, 2022. For more information see Federal Register (October 5, 2020, 85 FR 62698, p. 62698)
Picometre
Picometer
0.000000000001-fold of the SI base unit metre
Femtometre
Femtometer
The $\textit{femtometre}$ is an SI unit of length equal to $10^{-15} meter$. This distance can also be called $\textit{fermi}$ and was so named in honour of Enrico Fermi. It is often encountered in nuclear physics as a characteristic of this scale. The symbol for the fermi is also $fm$.
Mile US Statute
The exact length of the land mile varied slightly among English-speaking countries until the international yard and pound agreement in 1959 established the yard as exactly 0.9144 metres, giving a mile of exactly 1,609.344 metres. The United States adopted this international mile for most purposes, but retained the pre-1959 mile for some land-survey data, terming it the US survey mile. In the US, statute mile formally refers to the survey mile, about 3.219 mm (1/8 inch) longer than the international mile (the international mile is exactly 0.0002\% less than the US survey mile).
Microinch
"Microinch" is an Imperial unit for 'Length' expressed as $in^{-6}$.
Quantity
Reset
The volume of a solid object is the three-dimensional concept of how much space it occupies, often quantified numerically. One-dimensional figures (such as lines) and two-dimensional shapes (such as squares) are assigned zero volume in the three-dimensional space.
Angstrom
The $Angstr\ddot{o}m$ is an internationally recognized unit of length equal to $0.1 \,nanometre$ or $1 \times 10^{-10}\,metres$. Although accepted for use, it is not formally defined within the International System of Units(SI). The angstrom is often used in the natural sciences to express the sizes of atoms, lengths of chemical bonds and the wavelengths of electromagnetic radiation, and in technology for the dimensions of parts of integrated circuits. It is also commonly used in structural biology.
Nautical Mile
A unit of distance used primarily at sea and in aviation. The nautical mile is defined to be the average distance on the Earth's surface represented by one minute of latitude. In 1929 an international conference in Monaco redefined the nautical mile to be exactly 1852 meters or 6076.115 49 feet, a distance known as the international nautical mile. The international nautical mile equals about 1.1508 statute miles. There are usually 3 nautical miles in a league. The unit is designed to equal 1/60 degree, although actual degrees of latitude vary from about 59.7 to 60.3 nautical miles. (Note: using data from the Geodetic Reference System 1980, the "true" length of a nautical mile would be 1852.216 meters.)
PSI
Pounds of force per square inch, the unit for pressure as a compounded unit pound-force according to the Anglo-American system of units divided by the power of the unit Inch according to the Anglo-American and Imperial system of units by exponent 2
Tonne
الكثافة
hustota
Massendichte
mass density
densidad
چگالی
densité
घनत्व
densità
密度
Ketumpatan jisim
gęstość
densidade
densitate
плотность
Gostôta
The mass density or density of a material is its mass per unit volume.
$\rho = \frac{dm}{dV}$, where $m$ is mass and $V$ is volume.
volumenbezogene Masse
volumic mass
भार घनत्व
massa volumica
jisim isipadu
Load
Vapor Pressure
A pressure that is the one exerted by a substance vapor in thermodynamic equilibrium with either its solid or liquid phase at a given temperature in a closed system.
Applicable units are those of quantitykind:VaporPressure
واط
ват
watt
Watt
βατ
vatio
وات
ואט
वाट
ワット
wattium
wat
ватт
瓦特
The SI unit of power. Power is the rate at which work is done, or (equivalently) the rate at which energy is expended. One watt is equal to a power rate of one joule of work per second of time. This unit is used both in mechanics and in electricity, so it links the mechanical and electrical units to one another. In mechanical terms, one watt equals about 0.001 341 02 horsepower (hp) or 0.737 562 foot-pound per second (lbf/s). In electrical terms, one watt is the power produced by a current of one ampere flowing through an electric potential of one volt. The name of the unit honors James Watt (1736-1819), the British engineer whose improvements to the steam engine are often credited with igniting the Industrial Revolution.
$\textit{W}\ \equiv\ \text{watt}\ \equiv\ \frac{\text{J}}{\text{s}}\ \equiv\ \frac{\text{joule}}{\text{second}}\ \equiv\ \frac{\text{N.m}}{\text{s}}\ \equiv\ \frac{\text{newton.metre}}{\text{second}}\ \equiv\ \text{V.A}\ \equiv\ \text{volt.amp}\ \equiv\ \Omega\text{.A}^{2}\ \equiv\ \text{ohm.amp}^{2}$
value is limited to primitve datatypes and BACnetDateTime
Pound Force
"Pound Force" is an Imperial unit for 'Force' expressed as $lbf$.
Density
The mass density or density of a material is defined as its mass per unit volume. The symbol most often used for density is $\rho$. Mathematically, density is defined as mass divided by volume: $\rho = m/V$, where $\rho$ is the density, $m$ is the mass, and $V$ is the volume. In some cases, density is also defined as its weight per unit volume, although this quantity is more properly called specific weight.
$\rho = m/V$, where $\rho$ is the density, $m$ is the mass, and $V$ is the volume.
British Thermal Unit (Thermochemical Definition)
The $\textit{British Thermal Unit (thermochemical definition)}$ ($BTU_{th}$), is a traditional unit of energy equal to about $1.0543502645 kilojoule$. It is approximately the amount of energy needed to heat 1 pound (0.454 kg) of water from $39^{\circ}\text{F}$ ($3.9^{\circ}\text{C}$) to $40^{\circ}\text{F}$ ($4.4^{\circ}\text{C}$). The unit is most often used in the power, steam generation, heating and air conditioning industries. In scientific contexts the BTU has largely been replaced by the SI unit of energy, the $joule$.
International Mile
The exact length of the land mile varied slightly among English-speaking countries until the international yard and pound agreement in 1959 established the yard as exactly 0.9144 metres, giving a mile of exactly 1,609.344 metres. The United States adopted this international mile for most purposes, but retained the pre-1959 mile for some land-survey data, terming it the US survey mile. In the US, statute mile formally refers to the survey mile, about 3.219 mm (1/8 inch) longer than the international mile (the international mile is exactly 0.0002% less than the US survey mile).
description
The content of the description field of the BACnet object.
زمن
Време
Čas
Zeit
Χρόνος
time
tiempo
زمان
temps
זמן
समय
idő
tempo
時間
tempus
Masa
czas
timp
Время
čas
zaman
时间
Time is a basic component of the measuring system used to sequence events, to compare the durations of events and the intervals between them, and to quantify the motions of objects.
درجة مئوية
градус Целзий
stupně celsia
Grad Celsius
βαθμός Κελσίου
degree Celsius
grado celsius
درجه سانتی گراد/سلسیوس
degré celsius
सेल्सियस
Celsius-fok
セルシウス度
gradus celsii
darjah celsius
stopień celsjusza
grau celsius
grad celsius
градус Цельсия
stopinja Celzija
celsius
摄氏度
The unit $\textit{Celsius}$, also known as centigrade, is a scale and unit of measurement for temperature. It can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature interval, a difference between two temperatures or an uncertainty. This definition fixes the magnitude of both the degree Celsius and the kelvin as precisely 1 part in 273.16 (approximately 0.00366) of the difference between absolute zero and the triple point of water. Thus, it sets the magnitude of one degree Celsius and that of one kelvin as exactly the same. Additionally, it establishes the difference between the two scales' null points as being precisely $273.15^{\circ}\text{C}$.
مول
мол
mol
Mol
μολ
mole
מול
मोल (इकाई)
mól
モル
moles
моль
摩尔
The $\textit{mole}$ is a unit of measurement used in chemistry to express amounts of a chemical substance. The official definition, adopted as part of the SI system in 1971, is that one mole of a substance contains just as many elementary entities (atoms, molecules, ions, or other kinds of particles) as there are atoms in 12 grams of carbon-12 (carbon-12 is the most common atomic form of carbon, consisting of atoms having 6 protons and 6 neutrons). This corresponds to a value of $6.02214179(30) \times 10^{23}$ elementary entities of the substance. It is one of the base units in the International System of Units, and has the unit symbol $mol$. A Mole is the SI base unit of the amount of a substance (as distinct from its mass or weight). Moles measure the actual number of atoms or molecules in an object. An earlier name is gram molecular weight, because one mole of a chemical compound is the same number of grams as the molecular weight of a molecule of that compound measured in atomic mass units.
Static
object-name
The content of the name field of the BACnet object.
Force Per Area
The force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)
كولوم
кулон
coulomb
Coulomb
κουλόμπ
culombio
کولمب/کولن
קולון
कूलम्ब
クーロン
coulombium
kulomb
库伦
The SI unit of electric charge. One coulomb is the amount of charge accumulated in one second by a current of one ampere. Electricity is actually a flow of charged particles, such as electrons, protons, or ions. The charge on one of these particles is a whole-number multiple of the charge e on a single electron, and one coulomb represents a charge of approximately 6.241 506 x 1018 e. The coulomb is named for a French physicist, Charles-Augustin de Coulomb (1736-1806), who was the first to measure accurately the forces exerted between electric charges.
Nanometre
Nanometer
0.000000001-fold of the SI base unit metre
Substance
Entering
Dimensionless Ratio
Micrometre
Micrometer
"Micrometer" is a unit for 'Length' expressed as $microm$.
Leaving
نيوتن
нютон
newton
Newton
νιούτον
نیوتن
ניוטון
न्यूटन
ニュートン
newtonium
niuton
ньютон
牛顿
The "Newton" is the SI unit of force. A force of one newton will accelerate a mass of one kilogram at the rate of one meter per second per second. The newton is named for Isaac Newton (1642-1727), the British mathematician, physicist, and natural philosopher. He was the first person to understand clearly the relationship between force (F), mass (m), and acceleration (a) expressed by the formula $F = m \cdot a$.
EntityPropertyValue
Value
Cool
Decimetre
Decimeter
PID
Kilometre
Kilometer
A common metric unit of length or distance. One kilometer equals exactly 1000 meters, about 0.621 371 19 mile, 1093.6133 yards, or 3280.8399 feet. Oddly, higher multiples of the meter are rarely used; even the distances to the farthest galaxies are usually measured in kilometers.
أمبير
ампер
ampér
Ampere
αμπέρ
ampere
amperio
آمپر
ampère
אמפר
एम्पीयर
amper
アンペア
amperium
安培
$\textit{Ampere}$, often shortened to $\text{amp}$, is the SI unit of electric current and is one of the seven SI base units defined as: $$\text{A} \equiv \frac{\textit{C}}{\textit{s}} \equiv \frac{\textit{coulomb}}{\textit{second}} \equiv \frac{\text{joule}}{\text{weber}}$$ Note that SI supports only the use of symbols and deprecates the use of any abbreviations for units.
British Thermal Unit (International Definition)
$\textit{British Thermal Unit}$ (BTU or Btu) is a traditional unit of energy equal to about $1.0550558526 \textit{ kilojoule}$. It is approximately the amount of energy needed to heat 1 pound (0.454 kg) of water from $39^{\circ}{F}$ to $40^{\circ}{F}$ . The unit is most often used in the power, steam generation, heating and air conditioning industries. In scientific contexts the BTU has largely been replaced by the SI unit of energy, the $joule$, though it may be used as a measure of agricultural energy production (BTU/kg). It is still used unofficially in metric English-speaking countries (such as Canada), and remains the standard unit of classification for air conditioning units manufactured and sold in many non-English-speaking metric countries.
Chilled
Degree Fahrenheit
The unit $\textit{Degree Fahrenheit}$ is an Imperial unit for 'Thermodynamic Temperature' expressed as $\circ\text{F}$
كتلة
Маса
Hmotnost
Masse
Μάζα
mass
masa
جرم
masse
מסה
tömeg
massa
質量
Jisim
masă
Масса
kütle
质量
In physics, mass, more specifically inertial mass, can be defined as a quantitative measure of an object's resistance to acceleration. The SI unit of mass is the kilogram ($kg$)
القدرة
Мощност
Výkon
Leistung
Ισχύς
power
potencia
توان، نرخ جریان گرما
puissance
הספק
शक्ति
teljesítmény , hőáramlás
potenza
電力・仕事率
potentia
Kuasa
moc
potência
putere
Мощность
moč
güç
功率、热流
Power is the rate at which work is performed or energy is transmitted, or the amount of energy required or expended for a given unit of time. As a rate of change of work done or the energy of a subsystem, power is: $P = W/t$, where $P$ is power, $W$ is work and {t} is time.
$P = F \cdot v$, where $F$ is force and $v$ is velocity.
विकिरणी बहाव
strumień promieniowania
flux energetic
ısı akış oranı
Number
"Number" is a unit for 'Dimensionless' expressed as (\#$.
طول
Дължина
Délka
Länge
Μήκος
length
longitud
longueur
אורך
लम्बाई
hossz
lunghezza
長さ
longitudo
Panjang
długość
comprimento
lungime
Длина
dolžina
uzunluk
长度
In geometric measurements, length most commonly refers to the est dimension of an object. In some contexts, the term "length" is reserved for a certain dimension of an object along which the length is measured.
Volume per Time
Applicable units are those of quantitykind:VolumePerTime
الطاقة
Енергия
Energie
Έργο - Ενέργεια
energy
energia
انرژی
énergie
אנרגיה ועבודה
ऊर्जा
energia , munka , hő
エネルギー
Tenaga
energie
Энергия
energija
enerji
能量
Energy is the quantity characterizing the ability of a system to do work.
Milligram
0.000001-fold of the SI base unit kilogram
Millimetre
Millimeter
The millimetre (International spelling as used by the International Bureau of Weights and Measures) or millimeter (American spelling) (SI unit symbol mm) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. It is equal to 1000 micrometres or 1000000 nanometres. A millimetre is equal to exactly 5/127 (approximately 0.039370) of an inch.
Yard
A yard is a unit of length in several different systems including United States customary units, Imperial units and the former English units. It is equal to 3 feet or 36 inches. Under an agreement in 1959 between Australia, Canada, New Zealand, South Africa, the United Kingdom and the United States, the yard (known as the "international yard" in the United States) was legally defined to be exactly 0.9144 metres.
Day
باسكال
паскал
pascal
Pascal
πασκάλ
پاسگال
פסקל
पास्कल
パスカル
pascalium
paskal
паскаль
帕斯卡
Percent
"Percent" is a unit for 'Dimensionless Ratio' expressed as $\%$.
джаул
joule
Joule
τζάουλ
julio
ژول
जूल
ジュール
joulium
dżul
джоуль
焦耳
$\textit{Joule}$ is the SI unit of work or energy, defined to be the work done by a force of one newton acting to move an object through a distance of one meter in the direction in which the force is applied. Equivalently, since kinetic energy is one half the mass times the square of the velocity, one joule is the kinetic energy of a mass of two kilograms moving at a velocity of $1 m/s$.
$$\text{J}\ \equiv\ \text{joule}\ \equiv\ \text{CV}\ \equiv\ \text{coulomb.volt}\ \equiv\ \frac{\text{eV}}{1.602\ 10^{-19}}\ \equiv\ \frac{\text{electron.volt}}{1.602\ 10^{-19}}$$
The SI unit of work or energy, defined to be the work done by a force of one newton acting to move an object through a distance of one meter in the direction in which the force is applied. Equivalently, since kinetic energy is one half the mass times the square of the velocity, one joule is the kinetic energy of a mass of two kilograms moving at a velocity of 1 m/s. This is the same as 107 ergs in the CGS system, or approximately 0.737 562 foot-pound in the traditional English system. In other energy units, one joule equals about 9.478 170 x 10-4 Btu, 0.238 846 (small) calories, or 2.777 778 x 10-4 watt hour. The joule is named for the British physicist James Prescott Joule (1818-1889), who demonstrated the equivalence of mechanical and thermal energy in a famous experiment in 1843.
Litre
Liter
The $litre$ (American spelling: $\textit{liter}$; SI symbol $l$ or $L$) is a non-SI metric system unit of volume equal to $1 \textit{cubic decimetre}$ ($dm^3$), 1,000 cubic centimetres ($cm^3$) or $1/1000 \textit{cubic metre}$. If the lower case "L" is used as the symbol, it is sometimes rendered as a cursive "l" to help distinguish it from the capital "I", although this usage has no official approval by any international bureau.
Heat
Unitless
An explicit unit to say something has no units.
Bar
The $\textit{bar}$ is a non-SI unit of pressure, defined by the IUPAC as exactly equal to $100,000\,Pa$. It is about equal to the atmospheric pressure on Earth at sea level, and since 1982 the IUPAC has recommended that the standard for atmospheric pressure should be harmonized to $100,000\,Pa = 1 \,bar \approx 750.0616827\, Torr$. Units derived from the bar are the megabar (symbol: $Mbar$), kilobar (symbol: $kbar$), decibar (symbol: $dbar$), centibar (symbol: $cbar$), and millibar (symbol: $mbar$ or $mb$). They are not SI or cgs units, but they are accepted for use with the SI.
Discharge
Supply
Volume Flow Rate
Volumetric Flow Rate, (also known as volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which passes through a given surface per unit time.
$q_V = \frac{dV}{dt}$, where $V$ is volume and $t$ is time.
Minute
A minute is a unit of measurement of time. The minute is a unit of time equal to 1/60 (the first sexagesimal fraction of an hour or 60 seconds. In the UTC time scale, a minute on rare occasions has 59 or 61 seconds; see leap second. The minute is not an SI unit; however, it is accepted for use with SI units. The SI symbol for minute or minutes is min (for time measurement) or the prime symbol after a number, e.g. 5' (for angle measurement, even if it is informally used for time).
Differential
Hot
Gram
A unit of mass in the metric system. The name comes from the Greek gramma, a small weight identified in later Roman and Byzantine times with the Latin scripulum or scruple (the English scruple is equal to about 1.3 grams). The gram was originally defined to be the mass of one cubic centimeter of pure water, but to provide precise standards it was necessary to construct physical objects of specified mass. One gram is now defined to be 1/1000 of the mass of the standard kilogram, a platinum-iridium bar carefully guarded by the International Bureau of Weights and Measures in Paris for more than a century. (The kilogram, rather than the gram, is considered the base unit of mass in the SI.) The gram is a small mass, equal to about 15.432 grains or 0.035 273 966 ounce.
Flow
Temperature
Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. Objects of low temperature are cold, while various degrees of higher temperatures are referred to as warm or hot. Heat spontaneously flows from bodies of a higher temperature to bodies of lower temperature, at a rate that increases with the temperature difference and the thermal conductivity.
Currency
In economics, currency is a generally accepted medium of exchange. These are usually the coins and banknotes of a particular government, which comprise the physical aspects of a nation's money supply. The other part of a nation's money supply consists of bank deposits (sometimes called deposit money), ownership of which can be transferred by means of cheques, debit cards, or other forms of money transfer. Deposit money and currency are money in the sense that both are acceptable as a means of payment.
Applicable units are those of quantitykind:Currency
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot. Corresponding units of area and volume are the square inch and the cubic inch.
كيلوغرام
килограм
kilogram
Kilogramm
χιλιόγραμμο
kilogramo
کیلوگرم
kilogramme
קילוגרם
किलोग्राम
kilogramm*
chilogrammo
キログラム
chiliogramma
quilograma
килограмм
公斤
The kilogram or kilogramme (SI symbol: kg), also known as the kilo, is the base unit of mass in the International System of Units and is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water. The avoirdupois (or international) pound, used in both the Imperial system and U.S. customary units, is defined as exactly 0.45359237 kg, making one kilogram approximately equal to 2.2046 avoirdupois pounds.
Centimetre
Centimeter
A centimetre is a unit of length in the metric system, equal to one hundredth of a metre, which is the SI base unit of length. Centi is the SI prefix for a factor of $10^{-2}$. The centimetre is the base unit of length in the now deprecated centimetre-gram-second (CGS) system of units.
كلفن
келвин
kelvin
Kelvin
κέλβιν
کلوین
קלווין
कैल्विन
ケルビン
kelwin
кельвин
开尔文
The unit $\textit{Kelvin}$ is the SI base unit of temperature, previously called the degree Kelvin. One kelvin represents the same temperature difference as one degree Celsius. In 1967 the General Conference on Weights and Measures defined the temperature of the triple point of water (the temperature at which water exists simultaneously in the gaseous, liquid, and solid states) to be exactly 273.16 kelvins. Since this temperature is also equal to 0.01 u00b0C, the temperature in kelvins is always equal to 273.15 plus the temperature in degrees Celsius. The kelvin equals exactly 1.8 degrees Fahrenheit. The unit is named for the British mathematician and physicist William Thomson (1824-1907), later known as Lord Kelvin after he was named Baron Kelvin of Largs.
Foot
A foot is a unit of length defined as being 0.3048 m exactly and used in the imperial system of units and United States customary units. It is subdivided into 12 inches. The foot is still officially used in Canada and still commonly used in the United Kingdom, although the latter has partially metricated its units of measurement.
Pressure
Hour
The hour (common symbol: h or h) is a unit of measurement of time. In modern usage, an hour comprises 60 minutes, or 3,600 seconds. It is approximately 1/24 of a mean solar day. An hour in the Universal Coordinated Time (UTC) time standard can include a negative or positive leap second, and may therefore have a duration of 3,599 or 3,601 seconds for adjustment purposes. Although it is not a standard defined by the International System of Units, the hour is a unit accepted for use with SI, represented by the symbol h.
ثانية
секунда
sekunda
Sekunde
δευτερόλεπτο
second
segundo
ثانیه
seconde
שנייה
सैकण्ड
másodperc
secondo
secundum
saat
secundă
saniye
The $Second$ (symbol: $s$) is the base unit of time in the International System of Units (SI) and is also a unit of time in other systems of measurement. Between the years1000 (when al-Biruni used seconds) and 1960 the second was defined as $1/86400$ of a mean solar day (that definition still applies in some astronomical and legal contexts). Between 1960 and 1967, it was defined in terms of the period of the Earth's orbit around the Sun in 1900, but it is now defined more precisely in atomic terms. Under the International System of Units (via the International Committee for Weights and Measures, or CIPM), since 1967 the second has been defined as the duration of ${9192631770}$ periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.In 1997 CIPM added that the periods would be defined for a caesium atom at rest, and approaching the theoretical temperature of absolute zero, and in 1999, it included corrections from ambient radiation.
Placeholder value used for reference from units where it is not clear what a given unit is a measure of.
Applicable units are those of quantitykind:Unknown
Tag
Equipment
متر
метър
metr
μέτρο
metre
metro
mètre
מטר
मीटर
méter
メートル
metrum
meter
metru
метр
The metric and SI base unit of distance. The 17th General Conference on Weights and Measures in 1983 defined the meter as that distance that makes the speed of light in a vacuum equal to exactly 299 792 458 meters per second. The speed of light in a vacuum, $c$, is one of the fundamental constants of nature. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches.
The metric and SI base unit of distance. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches.
QUDT Quantity Kind Vocabulary Version 3.1.0
QUDT VOCAB Units of Measure Release 3.1.0
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The subject has the given tag