pascal per metre
type: Concept
in scheme: unit-of-measure
notation: H42
conversion multiplier: 1.0
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
ucum code: Pa.m-1
unit symbol: Pa/m

nanogram per kilogram
type: Concept
in scheme: unit-of-measure
notation: L32
conversion multiplier: 1e-12
dimension vector: 1
rec20 quantity: mass ratio
rec20 sector: Mechanics
ucum code: ng.kg-1
unit symbol: ng/kg

torr per metre
type: Concept
definition: CGS (Centimetre-Gram-Second system) unit of the pressure divided by the SI base unit metre.
in scheme: unit-of-measure
notation: P85
conversion multiplier: 133.322
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
unit symbol: Torr/m

British thermal unit (international table) per hour square foot degree Rankine
type: Concept
in scheme: unit-of-measure
notation: A23
conversion multiplier: 5.678263341113487
dimension vector: M1 Θ-1 T-3
rec20 quantity: surface coefficient of heat transfer
rec20 sector: Heat
ucum code: [Btu_IT].h-1.[ft_i]-2.[degR]-1
unit symbol: BtuIT/(h·ft²·°R)

British thermal unit (thermochemical) per hour square foot degree Fahrenheit
type: Concept
definition: Unit of the heat transition coefficient according to the imperial system of units.
in scheme: unit-of-measure
notation: N75
conversion multiplier: 5.6744658974561
dimension vector: M1 Θ-1 T-3
rec20 quantity: surface coefficient of heat transfer
rec20 sector: Heat
ucum code: [Btu_th].h-1.[ft_i]-2.[degF]-1
unit symbol: Btuth/(h·ft²·ºF)

millipascal per metre
type: Concept
definition: 0,001-fold of the derived SI unit pascal divided by the SI base unit metre.
in scheme: unit-of-measure
notation: P80
conversion multiplier: 0.001
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
ucum code: mPa.m-1
unit symbol: mPa/m

square metre
type: Concept
in scheme: unit-of-measure
notation: MTK
conversion multiplier: 1.0
dimension vector: L2
rec20 quantity: atomic attenuation coefficient
rec20 quantity: equivalent absorption area of a surface or object
rec20 quantity: cross-section
rec20 quantity: slowing down area, diffusion area, migration area
rec20 quantity: area
rec20 quantity: nuclear quadrupole moment
rec20 sector: Atomic and Nuclear Physics
rec20 sector: Space and Time
rec20 sector: Nuclear Reactions and Ionizing Radiations
rec20 sector: Acoustics
ucum code: m2
unit symbol: m²

gigahertz metre
type: Concept
in scheme: unit-of-measure
notation: M18
conversion multiplier: 1000000000.0
dimension vector: L1 T-1
rec20 quantity: coefficient, performance characteristic
rec20 sector: Electricity and Magnetism
ucum code: GHz.m
unit symbol: GHz·m

British thermal unit (international table) per hour square foot degree Fahrenheit
type: Concept
definition: Unit of the heat transition coefficient according to the Imperial system of units.
in scheme: unit-of-measure
notation: N74
conversion multiplier: 5.678263341113487
dimension vector: M1 Θ-1 T-3
rec20 quantity: surface coefficient of heat transfer
rec20 sector: Heat
ucum code: [Btu_IT].h-1.[ft_i]-2.[degF]-1
unit symbol: BtuIT/(h·ft²·ºF)

bel
type: Concept
definition: Logarithmic relationship to base 10.
in scheme: unit-of-measure
notation: M72
dimension vector: 1
rec20 quantity: level of a field quantity, level of a power quantity
rec20 sector: Periodic and related phenomena
ucum code: B
unit symbol: B

decade (logarithmic)
type: Concept
definition: 1 Dec := log2 10 ˜ 3,32 according to the logarithm for frequency range between f1 and f2, when f2/f1 = 10.
in scheme: unit-of-measure
notation: P41
rec20 quantity: logarithmic decrement
rec20 sector: Acoustics
unit symbol: dec

reciprocal second
type: Concept
in scheme: unit-of-measure
notation: C97
conversion multiplier: 1.0
dimension vector: T-1
rec20 quantity: Debye angular frequency
rec20 quantity: photon flux
rec20 quantity: circular frequency
rec20 quantity: decay constant, disintegration constant
rec20 quantity: damping coefficient
rec20 quantity: Larmor angular frequency
rec20 quantity: angular frequency, pulsatance
rec20 quantity: rotational frequency
rec20 sector: Atomic and Nuclear Physics
rec20 sector: Acoustics
rec20 sector: Solid State Physics
rec20 sector: Periodic and related phenomena
rec20 sector: Light and Related Electromagnetic Radiations
ucum code: /s
unit symbol: s⁻¹

standard atmosphere per metre
type: Concept
definition: Outdated unit of the pressure divided by the SI base unit metre.
in scheme: unit-of-measure
notation: P83
conversion multiplier: 101325.0
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
ucum code: atm.m-1
unit symbol: Atm/m

hertz metre
type: Concept
in scheme: unit-of-measure
notation: H34
conversion multiplier: 1.0
dimension vector: L1 T-1
rec20 quantity: coefficient, performance characteristic
rec20 sector: Electricity and Magnetism
ucum code: Hz.m
unit symbol: Hz·m

square metre per kilogram
type: Concept
in scheme: unit-of-measure
notation: D21
conversion multiplier: 1.0
dimension vector: L2 M-1
rec20 quantity: mass attenuation coefficient
rec20 quantity: mass energy transfer coefficient
rec20 sector: Nuclear Reactions and Ionizing Radiations
ucum code: m2.kg-1
unit symbol: m²/kg

volt per kelvin
type: Concept
in scheme: unit-of-measure
notation: D48
conversion multiplier: 1.0
dimension vector: I-1 L2 M1 Θ-1 T-3
rec20 quantity: Seebeck coefficient for substances a and b
rec20 sector: Solid State Physics
ucum code: V.K-1
unit symbol: V/K

square metre per mole
type: Concept
in scheme: unit-of-measure
notation: D22
conversion multiplier: 1.0
dimension vector: N-1 L2
rec20 quantity: molar absorption coefficient
rec20 quantity: molar attenuation coefficient
rec20 sector: Nuclear Reactions and Ionizing Radiations
rec20 sector: Light and Related Electromagnetic Radiations
ucum code: m2.mol-1
unit symbol: m²/mol

megapascal per bar
type: Concept
in scheme: unit-of-measure
notation: F05
conversion multiplier: 10.0
dimension vector: 1
rec20 quantity: pressure ratio
rec20 sector: Mechanics
ucum code: MPa.bar-1
unit symbol: MPa/bar

pascal square metre per kilogram
type: Concept
definition: 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.
in scheme: unit-of-measure
notation: P79
conversion multiplier: 1.0
dimension vector: L1 T-2
rec20 quantity: burst index
rec20 sector: Miscellaneous
ucum code: Pa.m2.kg-1
unit symbol: Pa/(kg/m²)

British thermal unit (thermochemical) per second square foot degree Fahrenheit
type: Concept
definition: Unit of the heat transition coefficient according to the imperial system of units.
in scheme: unit-of-measure
notation: N77
conversion multiplier: 20428.077230841962
dimension vector: M1 Θ-1 T-3
rec20 quantity: surface coefficient of heat transfer
rec20 sector: Heat
ucum code: [Btu_th].s-1.[ft_i]-2.[degF]-1
unit symbol: Btuth/(s·ft²·ºF)

megahertz metre
type: Concept
in scheme: unit-of-measure
notation: M27
conversion multiplier: 1000000.0
dimension vector: L1 T-1
rec20 quantity: coefficient, performance characteristic
rec20 sector: Electricity and Magnetism
ucum code: MHz.m
unit symbol: MHz·m

reciprocal metre
type: Concept
in scheme: unit-of-measure
notation: C92
conversion multiplier: 1.0
dimension vector: L-1
rec20 quantity: vergence, lens power
rec20 quantity: curvature
rec20 quantity: linear attenuation coefficient
rec20 quantity: angular repetency, angular wave number
rec20 quantity: angular reciprocal lattice vector, fundamental reciprocal lattice vector
rec20 quantity: wave number, attenuation coefficient, phase coefficient, propagation coefficient, repetency
rec20 quantity: wavenumber, repetency
rec20 quantity: macroscopic cross-section, volumic cross-section, volumic total cross-section, macroscopic total cross-section
rec20 quantity: linear attenuation coefficient, linear extinction coefficient,linear absorption coefficient
rec20 quantity: attenuation coefficient, phase coefficient, propagation coefficient
rec20 quantity: linear ionization by a particle, total ionization by a particle
rec20 quantity: repetency, wavenumber
rec20 quantity: Rydberg constant
rec20 sector: Atomic and Nuclear Physics
rec20 sector: Space and Time
rec20 sector: Nuclear Reactions and Ionizing Radiations
rec20 sector: Acoustics
rec20 sector: Solid State Physics
rec20 sector: Periodic and related phenomena
rec20 sector: Light and Related Electromagnetic Radiations
ucum code: /m
unit symbol: m⁻¹

millivolt per kelvin
type: Concept
in scheme: unit-of-measure
notation: D49
rec20 quantity: Thompson coefficient
rec20 sector: Solid State Physics
unit symbol: mV/K

cubic metre per cubic metre
type: Concept
in scheme: unit-of-measure
notation: H60
conversion multiplier: 1.0
dimension vector: 1
rec20 quantity: volume ratio
rec20 sector: Mechanics
ucum code: m3.m-3
unit symbol: m³/m³

kilowatt per square metre kelvin
type: Concept
definition: 1000-fold of the derived SI unit watt divided by the product of the power of the SI base unit metre by exponent 2 and the SI base unit kelvin.
in scheme: unit-of-measure
notation: N78
conversion multiplier: 1000.0
dimension vector: M1 Θ-1 T-3
rec20 quantity: surface coefficient of heat transfer
rec20 sector: Heat
ucum code: kW.m-2.K-1
unit symbol: kW/(m²·K)

bar per kelvin
type: Concept
in scheme: unit-of-measure
notation: F81
conversion multiplier: 100000.0
dimension vector: L-1 M1 Θ-1 T-2
rec20 quantity: pressure coefficient
rec20 sector: Heat
ucum code: bar.K-1
unit symbol: bar/K

pascal per kelvin
type: Concept
in scheme: unit-of-measure
notation: C64
conversion multiplier: 1.0
dimension vector: L-1 M1 Θ-1 T-2
rec20 quantity: pressure coefficient
rec20 sector: Heat
ucum code: Pa.K-1
unit symbol: Pa/K

ampere square metre per joule second
type: Concept
in scheme: unit-of-measure
notation: A10
conversion multiplier: 1.0
dimension vector: I1 M-1 T1
rec20 quantity: gyromagnetic coefficient, (gyromagnetic ratio)
rec20 sector: Atomic and Nuclear Physics
ucum code: A.m2.J-1.s-1
unit symbol: A·m²/(J·s)

pascal per bar
type: Concept
in scheme: unit-of-measure
notation: F07
conversion multiplier: 1e-05
dimension vector: 1
rec20 quantity: pressure ratio
rec20 sector: Mechanics
ucum code: Pa.bar-1
unit symbol: Pa/bar

picopascal per kilometre
type: Concept
in scheme: unit-of-measure
notation: H69
conversion multiplier: 1e-15
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
ucum code: pPa.km-1
unit symbol: pPa/km

kilogram per kilogram
type: Concept
in scheme: unit-of-measure
notation: M29
conversion multiplier: 1.0
dimension vector: 1
rec20 quantity: mass ratio
rec20 sector: Mechanics
ucum code: kg.kg-1
unit symbol: kg/kg

calorie (international table) per second square centimetre kelvin
type: Concept
deprecated: true
in scheme: unit-of-measure
notation: D72
conversion multiplier: 41868.0
dimension vector: M1 Θ-1 T-3
rec20 quantity: surface coefficient of heat transfer
rec20 sector: Heat
ucum code: cal_IT.s-1.cm-2.K-1
unit symbol: calIT/(s·cm²·K)

cubic metre per coulomb
type: Concept
in scheme: unit-of-measure
notation: A38
conversion multiplier: 1.0
dimension vector: I-1 L3 T-1
rec20 quantity: Hall coefficient
rec20 sector: Solid State Physics
ucum code: m3.C-1
unit symbol: m³/C

reciprocal kelvin or kelvin to the power minus one
type: Concept
in scheme: unit-of-measure
notation: C91
conversion multiplier: 1.0
dimension vector: Θ-1
rec20 quantity: linear expansion coefficient, cubic expansion coefficient, relative pressure coefficient
rec20 sector: Heat
ucum code: /K
unit symbol: K⁻¹

one
type: Concept
definition: Synonym: unit
in scheme: unit-of-measure
notation: C62
conversion multiplier: 1.0
dimension vector: 1
rec20 quantity: proton number
rec20 quantity: relative permittivity
rec20 quantity: Schmidt number
rec20 quantity: refractive index
rec20 quantity: orbital angular momentum quantum number
rec20 quantity: charge number of ion
rec20 quantity: fine structure constant
rec20 quantity: mole fraction of B, mole ratio of solute B
rec20 quantity: absolute activity
rec20 quantity: Fourier number
rec20 quantity: Reynolds number
rec20 quantity: standard absolute activity of B (in a liquid or a solid mixture)
rec20 quantity: thermal diffusion ratio, thermal diffusion factor
rec20 quantity: emissivity, spectral emissivity, emissivity at a specified wavelength, directional spectral emissivity
rec20 quantity: hyperfine structure quantum number
rec20 quantity: order of reflexion
rec20 quantity: Fourier number for mass transfer
rec20 quantity: multiplication factor, infinite medium multiplication factor, effective multiplication factor
rec20 quantity: magnetic susceptibility
rec20 quantity: Cowling number
rec20 quantity: magnetic Reynolds number
rec20 quantity: Knudsen number
rec20 quantity: poisson ratio, poisson number
rec20 quantity: Stanton number
rec20 quantity: degree of dissociation
rec20 quantity: electric susceptibility
rec20 quantity: internal conversion factor
rec20 quantity: proton number, atomic number
rec20 quantity: standard equilibrium constant
rec20 quantity: spin angular momentum quantum number
rec20 quantity: neutron number
rec20 quantity: Prandtl number
rec20 quantity: neutron yield per fission, neutron yield per absorption
rec20 quantity: Weber number
rec20 quantity: Rayleigh number
rec20 quantity: Grüneisen parameter
rec20 quantity: spectral absorption factor, spectral absorptance, spectral reflectionfactor,spectral reflectance, spectral transmission factor, spectral transmittance, spectral radiance factor
rec20 quantity: coupling coefficient, leakage coefficient
rec20 quantity: g-factor of atom or electron, g-factor of nucleus
rec20 quantity: resonance escape probability
rec20 quantity: Grashof number
rec20 quantity: optical density
rec20 quantity: transport number of ion B, current fraction of ion B
rec20 quantity: Lewis number
rec20 quantity: short-range order parameter, long-range order parameter
rec20 quantity: friction factor, coefficient of friction
rec20 quantity: Strouhal number
rec20 quantity: Peclet number
rec20 quantity: packing fraction, binding fraction
rec20 quantity: relative mass excess, relative mass defect
rec20 quantity: nucleon number, mass number
rec20 quantity: activity of solvent A, relative activity of solvent A (especially in a dilute solution), osmotic coefficient of the solvent A (especially in a dilute solution), standard absolute activity of solvent A (especially in a dilute solution)
rec20 quantity: relative density, relative mass density
rec20 quantity: microcanonical partition function, canonical partition function, grand-canonical partition function, grand partition function, molecular partition function, partition function of a molecule
rec20 quantity: Alfven number
rec20 quantity: stoichiometric number of B
rec20 quantity: activity coefficient of solute B (especially in a dilute solution),standard absolute activity of solute B (especially in a dilute solution)
rec20 quantity: nuclear spin quantum number
rec20 quantity: standard absolute activity of B (in a gaseous mixture)
rec20 quantity: Nusselt number for mass transfer
rec20 quantity: Nusselt number
rec20 quantity: ratio of the specific heat capacities, ratio of the massic heat capacity, isentropic exponent
rec20 quantity: Hartmann number
rec20 quantity: reactivity
rec20 quantity: principle quantum number
rec20 quantity: magnetic quantum number
rec20 quantity: activity coefficient of B (in a liquid as a solid mixture)
rec20 quantity: Debye-Walle factor
rec20 quantity: number of turns in a winding, number of phases, number of pairs of poles
rec20 quantity: fast fission factor
rec20 quantity: non leakage probability
rec20 quantity: luminous efficiency, spectral luminous efficiency,luminous efficiency at a specified wavelength
rec20 quantity: Froude number

kilopascal per millimetre
type: Concept
in scheme: unit-of-measure
notation: 34
conversion multiplier: 1000000.0
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
ucum code: kPa.mm-1
unit symbol: kPa/mm

reciprocal volt - ampere reciprocal second
type: Concept
in scheme: unit-of-measure
notation: M30
rec20 quantity: coefficient, performance characteristic
rec20 sector: Electricity and Magnetism
unit symbol: 1/(V·A·s)

reciprocal megakelvin or megakelvin to the power minus one
type: Concept
in scheme: unit-of-measure
notation: M20
dimension vector: Θ-1
rec20 quantity: linear expansion coefficient, cubic expansion coefficient, relative pressure coefficient
rec20 sector: Heat
unit symbol: 1/MK

bar per bar
type: Concept
in scheme: unit-of-measure
notation: J56
conversion multiplier: 1.0
dimension vector: 1
rec20 quantity: pressure ratio
rec20 sector: Mechanics
ucum code: bar.bar-1
unit symbol: bar/bar

microgram per kilogram
type: Concept
in scheme: unit-of-measure
notation: J33
conversion multiplier: 1e-09
dimension vector: 1
rec20 quantity: mass ratio
rec20 sector: Mechanics
ucum code: ug.kg-1
unit symbol: µg/kg

millibar per bar
type: Concept
in scheme: unit-of-measure
notation: F04
conversion multiplier: 0.001
dimension vector: 1
rec20 quantity: pressure ratio
rec20 sector: Mechanics
ucum code: mbar.bar-1
unit symbol: mbar/bar

cubic millimetre per cubic metre
type: Concept
in scheme: unit-of-measure
notation: L21
conversion multiplier: 1e-09
dimension vector: 1
rec20 quantity: volume ratio
rec20 sector: Space and Time
ucum code: mm3.m-3
unit symbol: mm³/m³

millilitre per square centimetre second
type: Concept
in scheme: unit-of-measure
notation: 35
conversion multiplier: 0.01
dimension vector: L1 T-1
rec20 quantity: porosity
rec20 sector: Miscellaneous
ucum code: mL.cm-2.s-1
unit symbol: ml/(cm²·s)

pound per pound
type: Concept
definition: 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.
in scheme: unit-of-measure
notation: M91
conversion multiplier: 1.0
dimension vector: 1
rec20 quantity: mass ratio
rec20 sector: Mechanics
ucum code: [lb_av].[lb_av]-1
unit symbol: lb/lb

neper
type: Concept
in scheme: unit-of-measure
notation: C50
dimension vector: 1
rec20 quantity: logarithmic decrement
rec20 quantity: level of a field quantity, level of a power quantity
rec20 sector: Acoustics
rec20 sector: Periodic and related phenomena
ucum code: Np
unit symbol: Np

psi per psi
type: Concept
in scheme: unit-of-measure
notation: L52
conversion multiplier: 1.0
dimension vector: 1
rec20 quantity: pressure ratio
rec20 sector: Mechanics
ucum code: [psi].[psi]-1
unit symbol: psi/psi

kilohertz metre
type: Concept
in scheme: unit-of-measure
notation: M17
conversion multiplier: 1000.0
dimension vector: L1 T-1
rec20 quantity: coefficient, performance characteristic
rec20 sector: Electricity and Magnetism
ucum code: kHz.m
unit symbol: kHz·m

kilopascal per bar
type: Concept
in scheme: unit-of-measure
notation: F03
conversion multiplier: 0.01
dimension vector: 1
rec20 quantity: pressure ratio
rec20 sector: Mechanics
ucum code: kPa.bar-1
unit symbol: kPa/bar

psi per inch
type: Concept
definition: 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 .
in scheme: unit-of-measure
notation: P86
conversion multiplier: 271447.14970547153
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
ucum code: [psi].[in_i]-1
unit symbol: psi/in

Dimensionless quantity units
type: Collection
definition: Units of measure grouped by quantity kind: dimensionless quantity.
member: cubic millimetre per cubic metre
member: ampere square metre per joule second
member: kilogram per kilogram
member: megapascal per bar
member: standard atmosphere per metre
member: square metre per second
member: metre
member: kilopascal square metre per gram
member: millibar per bar
member: nanogram per kilogram
member: millipascal per metre
member: cubic metre per cubic metre
member: kilohertz metre
member: pascal square metre per kilogram
member: pH (potential of Hydrogen)
member: volt per kelvin
member: British thermal unit (international table) per second square foot degree Rankine
member: millilitre per litre
member: reciprocal volt - ampere reciprocal second
member: hectopascal per metre
member: microgram per kilogram
member: cubic metre per second
member: microlitre per litre
member: calorie (thermochemical) per second square centimetre kelvin
member: bar per bar
member: square metre per kilogram
member: kilowatt per square metre kelvin
member: watt per square metre kelvin
member: milligram per kilogram
member: millivolt per kelvin
member: pound per pound
member: British thermal unit (thermochemical) per hour square foot degree Fahrenheit
member: neper
member: calorie (international table) per second square centimetre kelvin
member: psi per psi
member: decade (logarithmic)
member: square metre per mole
member: pascal per metre
member: reciprocal megakelvin or megakelvin to the power minus one
member: kilopascal per millimetre
member: megahertz metre
member: pascal per bar
member: British thermal unit (thermochemical) per second square foot degree Fahrenheit
member: technical atmosphere per metre
member: bel
member: torr per metre
member: reciprocal kilovolt - ampere reciprocal hour
member: bar per kelvin
member: picopascal per kilometre
member: reciprocal joule
member: megahertz kilometre
member: cubic foot per minute per square foot
member: hertz metre
member: decibel
member: British thermal unit (international table) per hour square foot degree Rankine
member: millilitre per square centimetre second
member: cubic centimetre per cubic metre
member: neper per second
member: microgram per hectogram
member: hectopascal per bar
member: litre per litre
member: kilopascal per bar
member: kilopascal per metre
member: one
member: British thermal unit (international table) per hour square foot degree Fahrenheit
member: cubic decimetre per cubic metre
member: square metre
member: cubic metre per second square metre
member: psi per inch
member: reciprocal second
member: gigahertz metre
member: British thermal unit (international table) per second square foot degree Fahrenheit
member: pascal per kelvin
member: cubic metre per coulomb
member: reciprocal kelvin or kelvin to the power minus one
member: reciprocal metre

watt per square metre kelvin
type: Concept
in scheme: unit-of-measure
notation: D55
conversion multiplier: 1.0
dimension vector: M1 Θ-1 T-3
rec20 quantity: coefficient of heat transfer
rec20 sector: Heat
ucum code: W.m-2.K-1
unit symbol: W/(m²·K)

decibel
type: Concept
in scheme: unit-of-measure
notation: 2N
dimension vector: 1
rec20 quantity: level of a field quantity, level of a power quantity
rec20 quantity: sound pressure level, sound power level
rec20 quantity: sound reduction index
rec20 sector: Acoustics
rec20 sector: Periodic and related phenomena
ucum code: dB
unit symbol: dB

microlitre per litre
type: Concept
in scheme: unit-of-measure
notation: J36
conversion multiplier: 1e-06
dimension vector: 1
rec20 quantity: volume ratio
rec20 sector: Space and Time
ucum code: uL.L-1
unit symbol: µl/l

millilitre per litre
type: Concept
in scheme: unit-of-measure
notation: L19
conversion multiplier: 0.001
dimension vector: 1
rec20 quantity: volume ratio
rec20 sector: Space and Time
ucum code: mL.L-1
unit symbol: ml/l

megahertz kilometre
type: Concept
in scheme: unit-of-measure
notation: H39
conversion multiplier: 1000000.0
dimension vector: L1 T-1
rec20 quantity: coefficient, performance characteristic
rec20 sector: Electricity and Magnetism
ucum code: MHz.m
unit symbol: MHz·km

kilopascal per metre
type: Concept
definition: 1000-fold of the derived SI unit pascal divided by the SI base unit metre.
in scheme: unit-of-measure
notation: P81
conversion multiplier: 1000.0
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
ucum code: kPa.m-1
unit symbol: kPa/m

reciprocal joule
type: Concept
definition: Reciprocal of the derived SI unit joule.
in scheme: unit-of-measure
notation: N91
conversion multiplier: 1.0
dimension vector: L-2 M-1 T2
rec20 quantity: coefficient, performance characteristic
rec20 sector: Electricity and Magnetism
ucum code: /J
unit symbol: 1/J

metre
type: Concept
in scheme: unit-of-measure
notation: MTR
conversion multiplier: 1.0
dimension vector: L1
rec20 quantity: wavelength
rec20 quantity: mean free path of phonons or electrons, London penetration depth, coherence length, diffusion length
rec20 quantity: nuclear radius, electron radius, Compton wavelength
rec20 quantity: mean linear range, mean free path
rec20 quantity: slowing-down length, diffusion length, migration length
rec20 quantity: particle position vector, equilibrium position vector of ion or atom, displacement vector of ion or atom
rec20 quantity: object distance, image distance, focal distance
rec20 quantity: Bohr radius
rec20 quantity: (instantaneous) sound particle displacement
rec20 quantity: diffusion coefficient for neutron fluence rate, (diffusion coefficient for neutron flux density)
rec20 quantity: lattice vector, fundamental lattice vector
rec20 quantity: mean free path
rec20 quantity: half-thickness, half-value thickness
rec20 quantity: length, breadth, height, thickness, radius, radius of curvature, cartesian coordinates, diameter, length of path, distance
rec20 sector: Nuclear Reactions and Ionizing Radiations
rec20 sector: Acoustics
rec20 sector: Solid State Physics
rec20 sector: Periodic and related phenomena
rec20 sector: Light and Related Electromagnetic Radiations
rec20 sector: Physical Chemistry and Molecular Physics
rec20 sector: Atomic and Nuclear Physics
rec20 sector: Space and Time
ucum code: m
unit symbol: m

British thermal unit (international table) per second square foot degree Rankine
type: Concept
in scheme: unit-of-measure
notation: A20
conversion multiplier: 20441.748028008555
dimension vector: M1 Θ-1 T-3
rec20 quantity: surface coefficient of heat transfer
rec20 sector: Heat
ucum code: [Btu_IT].s-1.[ft_i]-2.[degR]-1
unit symbol: BtuIT/(s·ft²·°R)

cubic centimetre per cubic metre
type: Concept
in scheme: unit-of-measure
notation: J87
conversion multiplier: 1e-06
dimension vector: 1
rec20 quantity: volume ratio
rec20 sector: Space and Time
ucum code: cm3.m-3
unit symbol: cm³/m³

cubic decimetre per cubic metre
type: Concept
in scheme: unit-of-measure
notation: J91
conversion multiplier: 0.001
dimension vector: 1
rec20 quantity: volume ratio
rec20 sector: Space and Time
ucum code: dm3.m-3
unit symbol: dm³/m³

British thermal unit (international table) per second square foot degree Fahrenheit
type: Concept
definition: Unit of the heat transition coefficient according to the imperial system of units.
in scheme: unit-of-measure
notation: N76
conversion multiplier: 20441.748028008555
dimension vector: M1 Θ-1 T-3
rec20 quantity: surface coefficient of heat transfer
rec20 sector: Heat
ucum code: [Btu_IT].s-1.[ft_i]-2.[degF]-1
unit symbol: BtuIT/(s·ft²·ºF)

cubic foot per minute per square foot
type: Concept
deprecated: true
definition: Conversion factor required
in scheme: unit-of-measure
notation: 36
conversion multiplier: 0.00508
dimension vector: L1 T-1
rec20 quantity: porosity
rec20 sector: Miscellaneous
ucum code: [cft_i].min-1.[sft_i]-1
unit symbol: ft³/(min/ft²)

kilopascal square metre per gram
type: Concept
in scheme: unit-of-measure
notation: 33
conversion multiplier: 1000000.0
dimension vector: L1 T-2
rec20 quantity: burst index
rec20 sector: Miscellaneous
ucum code: kPa.m2.g-1
unit symbol: kPa·m²/g

square metre per second
type: Concept
definition: Synonym: metre squared per second (square metres/second US)
in scheme: unit-of-measure
notation: S4
conversion multiplier: 1.0
dimension vector: L2 T-1
rec20 quantity: thermal diffusivity
rec20 quantity: diffusion coefficient, diffusion coefficient for neutron number density
rec20 quantity: kinematic viscosity
rec20 quantity: diffusion coefficient
rec20 quantity: thermal diffusion coefficient
rec20 sector: Nuclear Reactions and Ionizing Radiations
rec20 sector: Heat
rec20 sector: Mechanics
rec20 sector: Physical Chemistry and Molecular Physics
ucum code: m2.s-1
unit symbol: m²/s

hectopascal per bar
type: Concept
in scheme: unit-of-measure
notation: E99
conversion multiplier: 0.001
dimension vector: 1
rec20 quantity: pressure ratio
rec20 sector: Mechanics
ucum code: hPa.bar-1
unit symbol: hPa/bar

calorie (thermochemical) per second square centimetre kelvin
type: Concept
deprecated: true
in scheme: unit-of-measure
notation: D39
conversion multiplier: 41840.0
dimension vector: M1 Θ-1 T-3
rec20 quantity: surface coefficient of heat transfer
rec20 sector: Heat
ucum code: cal_th.s-1.cm-2.K-1
unit symbol: calth/(s·cm²·K)

cubic metre per second
type: Concept
in scheme: unit-of-measure
notation: MQS
conversion multiplier: 1.0
dimension vector: L3 T-1
rec20 quantity: recombination coefficient
rec20 quantity: volume flow rate
rec20 quantity: (instantaneous) volume flow rate
rec20 sector: Mechanics
rec20 sector: Nuclear Reactions and Ionizing Radiations
rec20 sector: Acoustics
ucum code: m3.s-1
unit symbol: m³/s

litre per litre
type: Concept
in scheme: unit-of-measure
notation: K62
conversion multiplier: 1.0
dimension vector: 1
rec20 quantity: volume ratio
rec20 sector: Space and Time
ucum code: L.L-1
unit symbol: l/l

neper per second
type: Concept
in scheme: unit-of-measure
notation: C51
conversion multiplier: 1.0
dimension vector: T-1
rec20 quantity: damping coefficient
rec20 sector: Periodic and related phenomena
rec20 sector: Acoustics
ucum code: Np.s-1
unit symbol: Np/s

hectopascal per metre
type: Concept
definition: 100-fold of the derived SI unit pascal divided by the SI base unit metre.
in scheme: unit-of-measure
notation: P82
conversion multiplier: 100.0
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
ucum code: hPa.m-1
unit symbol: hPa/m

microgram per hectogram
type: Concept
definition: Microgram per hectogram.
in scheme: unit-of-measure
notation: Q29
rec20 quantity: mass ratio
rec20 sector: Mechanics
unit symbol: µg/hg

technical atmosphere per metre
type: Concept
definition: Obsolete and non-legal unit of the pressure which is generated by a 10 metre water column divided by the SI base unit metre.
in scheme: unit-of-measure
notation: P84
conversion multiplier: 98066.5
dimension vector: L-2 M1 T-2
rec20 quantity: hardness index
rec20 sector: Miscellaneous
ucum code: att.m-1
unit symbol: at/m

milligram per kilogram
type: Concept
in scheme: unit-of-measure
notation: NA
conversion multiplier: 1e-06
dimension vector: 1
rec20 quantity: mass ratio
rec20 sector: Mechanics
ucum code: mg.kg-1
unit symbol: mg/kg

cubic metre per second square metre
type: Concept
definition: Unit of volume flow cubic meters by second related to the transmission surface in square metres.
in scheme: unit-of-measure
notation: P87
conversion multiplier: 1.0
dimension vector: L1 T-1
rec20 quantity: porosity
rec20 sector: Miscellaneous
ucum code: m3.s-1.m-2
unit symbol: (m³/s)/m²

pH (potential of Hydrogen)
type: Concept
definition: The activity of the (solvated) hydrogen ion (a logarithmic measure used to state the acidity or alkalinity of a chemical solution).
in scheme: unit-of-measure
notation: Q30
rec20 quantity: acidity and alkalinity
rec20 sector: Physical Chemistry and Molecular Physics
unit symbol: pH

reciprocal kilovolt - ampere reciprocal hour
type: Concept
in scheme: unit-of-measure
notation: M21
rec20 quantity: coefficient, performance characteristic
rec20 sector: Electricity and Magnetism
unit symbol: 1/kVAh