# SI Dimensions of Physical Quantities: Alphabetic List for NIFT

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## SI Dimensions of Physical Quantities: ‘a ‘Alphabetic List

 A: Quantity Dimension Alternatives Definition/Notes Abbé number | Constringence | V-number 1 Dimensionless VD = (nD-1)/(nF-nC) Absorbed radiation dose m2.s-2 J.kg-1, Gy (gray) [Energy]/[Mass] Absorbed dose rate m2.s-3 Gy.s-1 [Absorbed dose]/[Time] Acceleration, angular s-2 rad.s-2 [ΔAngular velocity]/[ΔTime] Acceleration | Deceleration m.s-2 [ΔVelocity]/[ΔTime] Acoustic impedance / resistance / reactance kg.m-4.s-1 Pa.s/m3, reyl/m2 [Pressure]/[Volume flow rate] Acoustic impedance, specific kg.m-2.s-1 Pa.s/m , reyl [ΔPressure]*[Velocity]. Also s.acu. resistance / reactance Acoustic conductance, specific kg-1.m2.s reyl-1 Inverse of s.acu. impedance. Also s.acu. susceptance Action kg.m2.s-1 J.s [Energy]*[Time], [Moment of motion]*[Distance] Activity of a radioactive source s-1 Bq (becquerel) [Counts]/[Time] Activity, katalytic mol.s-1 katal [ΔQuantity]/[Time]. Same as molar production rate Activity, transactions rate s-1 1/year [Transactions]/[Time period]. Economy and finance Admittance, inductive kg-1.m-2.s3.A2 S (siemens) 1/[Inductive impedance] Admittance, of a circuit kg-1.m-2.s3.A2 S (siemens) 1/[Circuit impedance] Advection velocity m.s-1 m/s In porous media; actual progress along pressure gradient Albedo, of a surface 1 Dimensionless [Reflected elmag power]/[Incident elmag power] Amplification | Attenuation (generic) 1 usually in dB [Quantity(p)]/[Quantity(p’)], with p being some parameter Angular acceleration s-2 rad.s-2 [ΔAngular velocity]/[ΔTime] Angular moment of inertia kg.m2 [Mass]*[Distance2] Angular moment of motion kg.m2.s-1 J.s [Moment of motion]*[Distance]. Like [action] Angular velocity s-1 rad.s-1 [ΔPlane angle]/[ΔTime] Annealing point K Temperature at which viscosity drops below 1012 Pa.s Area m2 [Distance]*[Distance] Area growth rate m2.s-1 [ΔArea]/[Time] Asset | Wealth cur currency Economy and finance Atomic number 1 Dimensionless Number of protons in an atomic nucleus Atomic weight | Relative atomic mass au atomic units Average over a typical isotopic composition Attenuation | Amplification (generic) 1 usually in dB [Quantity(p)]/[Quantity(p’)], with p being some parameter Attenuation / amplification over a distance m-1 dB/m [Attenuation]/[Distance]. Mostly in acoustic and electronics Attenuation / amplification over a period s-1 dB/s [Attenuation]/[Time]. Mostly in acoustic and electronics

## SI Dimensions of Physical Quantities: ‘B’Alphabetic List

 B: Quantity Dimension Alternatives Definition/Notes Bandwidth s-1 Hz [ΔFrequency] Baud rate | Information flux bit.s-1 baud [Information]/[Time] Bond duration s year Economy and finance Bulk modulus kg.m-1.s-2 N.m-2, Pa ([ΔVolume]/[Volume])/[Pressure]. Inverse of compressibility

## SI Dimensions of Physical Quantities: ‘C’ Alphabetic List

 C: Quantity Dimension Alternatives Definition/Notes Capacitance, electric kg-1.m-2.s4.A2 C.V-1, F (farad) [Charge]/[ΔPotential] Capacitive reactance kg.m2.s-3.A-2 Ω (ohm) 1/(i[Angular frequency].[Capacitance]) Capacitive susceptance kg-1.m-2.s3.A2 S (siemens) 1/[Capacitive reactance] Cash flow cur.s-1 currency/year [Value]/[ΔTime]. Economy and finance Circulation m2.s-1 J.s.kg-1 [Angular moment]/[Mass], [Velocity]*[Loop length] Characteristic impedance kg.m2.s-3.A-2 V.A-1, Ω, ohm √([Mag.Permeability]/[El.Permittivity]) Charge, electric s .A C (coulomb) [Current]*[Time] Charge, magnetic (bound) m-2.A - ∇.[Magnetization] , -Divergence of magnetization Charge, quantum 1 Dimensionless [Charge]/[Elementary charge quantum] Charge, molecular/ionic, quantum 1 Dimensionless [Charge of a molecule or ion]/[Elementary charge quantum] Charge density m-3.s.A C.m-3 [Charge]/[Volume] Charge/mass ratio | Specific charge kg-1.s.A C.kg-1 [Charge]/[Mass] Charge, molar s.A.mol-1 C.mol-1 [Charge]/[Quantity] Chemical potential, molar kg.m2.s-2.mol-1 J.mol-1 [ΔInternalEnergy]/[ΔQuantity] Circuit admittance kg-1.m-2.s3.A2 S (siemens) 1/[Circuit impedance] Circuit impedance kg.m2.s-3.A-2 Ω (ohm) Circulation / velocity of money s-1 1/year [Transactions]/[Time period]. Economy and finance Circumference | Perimeter m Collision cross section | Cross section m2 [Distance]*[Distance] Compressibility kg-1.m.s2 Pa-1 [Pressure]/([ΔVolume]/[Volume]). Inverse of bulk modulus Compression kg.m-1.s-2 N.m-2, Pa (pascal) [Force]/[Area]. Same as pressure Compression factor of a real gas 1 Dimensionless pV/(nRT). For ideal gas equals 1; temperature dependent Compressive strength kg.m-1.s-2 N.m-2, Pa [Force]/[Area]. Like pressure Concentration, molar m-3.mol [Quantity]/[Volume]. Same as molar density Concentration gradient, molar m-4.mol [Molarity]/[Distance]. Same as molarity gradient Concentration ratio, molar 1 Dimensionless [Partial quantity]/[Total quantity] Concentration ratio, by mass 1 Dimensionless [Partial mass]/[Total mass] Concentration ratio, by volume 1 Dimensionless [Partial volume]/[Total volume]. . Concentration, by weight (obsolete) 1 Dimensionless [Partial mass]/[Total mass]. Obsolete: use by mass Conductance, electric kg-1.m-2.s3.A2 A.V-1, S (siemens) 1/[Resistance] Conductivity, electric kg-1.m-3.s3.A2 S.m-1 1/[Resistivity] Conductivity, hydraulic m.s-1 m/s Used for porous media Conductivity, molar kg-1.s3.A2.mol-1 S.m2.mol-1 [El.conductivity]/[Concentration] Conductivity, thermal kg.m.s-3.K-1 W.m-1.K-1 [Heat flux]/([Distance]*[ΔTemperature]) Constringence | Abbé number | V-number 1 Dimensionless VD = (nD-1)/(nF-nC) Convergence m-1 dioptry in optics, but not only Cosmological constant Λ m-2 Present in Einstein’s equation Cosmological expansion rate s-1 km/s/Mpc [Velocity]/[Distance]. Mpc stands for Megaparsec Count of events/instances 1 This covers all kinds of enumerations Count rate s-1 [Counts]/[Time] Couple kg.m2.s-2 N.m 2*[Force]*[Distance] for two non-aligned opposing forces Critical angle of repose rad or degree Steepest angle of a slope before a slide Cross section m2 [Distance]*[Distance] Cryoscopic constant kg.mol-1.K K/(mol/kg) [ΔTemperature]/[Molality] Current, electric A A (ampere) Current density, electric m-2.A [Current]/[Area]. Same as current intensity Current intensity, electric m-2.A [Current]/[Area]. Same as current density Current noise, variance nJ2 s.A2 A2/Hz [Current]2/[Bandwidth] Curvature m-1 1/[Curvature radius] Curvature radius m of a line in plane/space or surface in space

## SI Dimensions of Physical Quantities: ‘D’ Alphabetic List

 D: Quantity Dimension Alternatives Definition/Notes D’Alembert operator | D’Alembertian m-2 (1/c2)∂2/∂t2 - ∂2/∂x2 - ∂2/∂y2 - ∂2/∂z2 Debt | Liability cur currency Economy and finance Debt/GDP ratio s year [Debt]/[Earnings]. Economy and finance Deceleration | Acceleration m.s-2 [ΔVelocity]/[ΔTime] Deceleration, angular s-2 rad.s-2 [ΔAngular velocity]/[ΔTime] Density of electric charge m-3.s.A C.m-3 [Charge]/[Volume] Density of electric current m-2.A [Current]/[Area]. Same as current intensity Density of energy kg.m-1.s-2 J.m-3 [Energy]/[Volume] Density of mass kg.m-3 [Mass]/[Volume]. Same as specific density Density of mass, gradient of kg.m-4 [Mass density]/[Distance]. Same as specific density gradient Density of particles m-3 [Count]/[Volume]. Obsolete: number density Density of substance m-3.mol [Quantity]/[Volume]. Same as molar concentration Derivative with respect to time s-1 d/dt, ∂/∂t Derivative with respect to a length m-1 d/dr, ∂/∂r, r = x | y | z Dielectric constant | Relative permittivity 1 Dimensionless [Permittivity]/[Permittivity of vacuum] Dielectric strength/rigidity | Electric strength kg.m.s-3.A-1 V.m-1 [ΔPotential]/[Distance] Diffusion coefficient m2.s-1 [Distance]2/[Time] Diffusivity, thermal m2.s-1 ([∂Temperatute]/[∂Time])/[∇2Temperature]. Dipole moment, electric m.s.A C.m [Charge]*[Distance] Dipole moment, magnetic m2.A J.T-1 [Current]*[Area] Dispersive power 1 Dimensionless Ratio of differences of refractive indices Dispersivity quotient m-1 [ΔRefractive index]/[ΔWavelength] Displacement, electric m-2.s.A C.m-2 [Charge]/[Area]. Same as electric flux density Displacement four-tensor (relativistic Dμν) m-1.A Like magnetic intensity Distance m in all Euclidean n-dimensional spaces Dose of absorbed radiation m2.s-2 J.kg-1, Gy (gray) [Energy]/[Mass] Dose rate m2.s-3 Gy.s-1 [Absorbed dose]/[Time] Drift speed m.s-1 Steady-state speed of an object. . Duration s s (second) Dynamic viscosity kg.m-1.s-1 Pa.s ([Force]/[Area])/[ΔVelocity]

## SI Dimensions of Physical Quantities: ‘E’ Alphabetic List

 E: Quantity Dimension Alternatives Definition/Notes Earnings | Income rate cur.s-1 currency/year [Value]/[Time period]. Economy and finance Ebullioscopic constant kg.mol-1.K K/(mol/kg) [ΔTemperature]/[Molality] Electric capacitance kg-1.m-2.s4.A2 C.V-1, F (farad) [Charge]/[ΔPotential] Electric charge s .A C (coulomb) [Current]*[Time] Electric conductance kg-1.m-2.s3.A2 A.V-1, S (siemens) [Current]/[ΔPotential]. Inverse of resistance Electric conductivity kg-1.m-3.s3.A2 S.m-1 1/[Resistivity] Electric conductivity, molar kg-1.s3.A2.mol-1 S.m2.mol-1 [El.conductivity]/[Concentration] Electric current A A (ampere) Electric dipole moment m.s.A C.m [Charge]*[Distance] Electric displacement m-2.s.A C.m-2 [Charge]/[Area]. Same as electric flux density Electric field strength | Electric intensity kg.m.s-3.A-1 V.m-1 [ΔPotential]/[Distance] Electric field gradient kg.s-3.A-1 V.m-2 [ΔEl.field strength]/[Distance] Electric flux density | Electric induction m-2.s.A C.m-2 [Charge]/[Area] Electric inductance kg.m2.s-2.A-2 V.s.A-1, H (henry) [ΔPotential]/[dCurrent/dt] Electric induction m-2.s.A C.m-2 [Charge]/[Area]. More properly electric flux density Electric intensity kg.m.s-3.A-1 V.m-1 [ΔPotential]/[Distance]. More properly electric field strength Electric permittivity kg-1.m-3.s4.A2 F.m-1 [El.flux density]/[El.field strength] Electric permittivity, relative 1 Dimensionless [Permittivity]/[Permittivity of vacuum]. Same as dielectric constant Electric polarization m-2.s.A C.m-2 [Charge]/[Area]. Like electric flux density Electric potential kg.m2.s-3.A-1 W.A-1, J.C-1, V (volt) [Power]/[Current], [Energy]/[Charge] Electric quadrupole moment m2.s.A C.m2 [Electric dipole]*[Distance], [Electric charge]*[Distance2] Electric resistance kg.m2.s-3.A-2 V.A-1, Ω (ohm) [ΔPotential]/[Current] Electric resistivity kg.m3.s-3.A-2 Ω.m ([Resistance]*[Length])/[Area] Electric strength | Dielectric strength kg.m.s-3.A-1 V.m-1 [ΔPotential]/[Distance]. . Electromagnetic field tensor (relativistic Fμν) kg.s-2.A-1 T Like magnetic flux density Electromagnetic displacement (relat. Dμν) m-1.A Like magnetic intensity Electromagnetic four-current (relativistic Jα) m-2.A Like current density and [Charge]*[c] Electromagnetic four-potential (relativistic Aα) kg.m.s-2.A-1 m-1.s.V, m.T Like magnetic vector potential and [El.potential]/[c] Electromotive force (emf) kg.m2.s-3.A-1 V [ΔPotential] Electron affinity (always molar) kg.m2.s-2.mol-1 J.mol-1 Energy released binding an electron Electronegativity, Pauling χ 1 Dimensionless Relative tendency of an atom to attract electrons; χ(H)=2.20. Electrostriction coefficient kg-2.m-2.s6.A2 m2.V-2 ([ΔVolume]/[Volume])/[Electric field strength]2 Emittance, luminous cd.sr.m-2 lm.m-2, lx (lux) [Luminous flux]/[Area]. Same as luminous exitance Energy kg.m2.s-2 N.m, J (joule) [Force]*[Distance], [Power]*[Time] Energy, molar kg.m2.s-2.mol-1 J.mol-1 [Energy]/[Quantity] Energy, specific m2.s-2 J.kg-1 [Energy]/[Mass] Energy density kg.m-1.s-2 J.m-3 [Energy]/[Volume] Energy flux | Power kg.m2.s-3 J.s-1, W (watt) [ΔEnergy]/[ΔTime] Enthalpy kg.m2.s-2 J Like energy and heat Enthalpy, molar kg.m2.s-2.mol-1 J.mol-1 [Enthalpy]/[Quantity]. Like molar heat Enthalpy, specific m2.s-2 J.kg-1 [Enthalpy]/[Mass]. Like specific heat Entropy kg.m2.s-2.K-1 J.K-1 [ΔHeat]/[Temperature] Entropy, molar kg.m2.s-2.K-1.mol-1 J.K-1.mol-1 [Entropy]/[Quantity] Entropy, specific m2.s-2.K-1 J.K-1.kg-1 [Entropy]/[Mass] Evolution rate, log-scale s-1 d{ln(Q)}/dt = (dQ/dt)/Q. Same as relative evolution rate Expansion coefficient, thermal K-1 ([ΔLength]/[Length])/[Temperature] Expansion rate, cosmological s-1 km/s/Mpc [Velocity]/[Distance]. Mpc stands for Megaparsec Expectation frequency s-1 [Counts]/[Time]. Like count rate Exposure kg-1.s.A C.kg-1 [Charge]/[Mass]. Used for ionising radiations Extinction coefficient m-1 dB/m [Ratio]/m. Used mostly for radiation

## SI Dimensions of Physical Quantities: ‘F’ Alphabetic List

 F: Quantity Dimension Alternatives Definition/Notes Field tensor, electromagnetic (relativistic Fμν) kg.s-2.A-1 T Like magnetic flux density Fire point K Temperature at which ignited vapour keeps burning Flash point K Temperature at which vapour can be kept burning Flow cur.s-1 currency/year [ΔValue]/[ΔTime]. Economy and finance: time derivative Flow rate, of mass | Mass production rate kg.s-1 [ΔMass]/[Time]. For example, through a pipe Flow rate, of volume m3.s-1 [ΔVolume]/[Time]. For example, through a pipe Force kg.m.s-2 N (newton) [Mass]*[Acceleration] Force, thermodynamic kg.m.s-2.mol-1 N/mol [ΔChemical potential]/[Distance] Four-current (relativistic Jα) m-2.A Like current density and [Charge]*[c] Four-potential (relativistic Aα) kg.m.s-2.A-1 m-1.s.V, m.T Like magnetic vector potential and [El.potential]/[c] Four-tensor elmag displacement (relat. Dμν) m-1.A Like magnetic intensity Four-tensor elmag field (relativistic Fμν) kg.s-2.A-1 T Like magnetic flux density Free energy kg.m2.s-2 J Also Helmholtz function. Like energy Free energy, molar kg.m2.s-2.mol-1 J.mol-1 [Free energy]/[Quantity]. Like Helmholtz function Free energy, specific m2.s-2 J.kg-1 [Free energy]/[Mass]. Like specific Helmholtz function Free enthalpy kg.m2.s-2 J Also Gibbs function. Like energy Free enthalpy, molar kg.m2.s-2.mol-1 J.mol-1 [Free enthalpy]/[Quantity]. Like molar Gibbs function Free enthalpy, specific m2.s-2 J.kg-1 [Free enthalpy]/[Mass]. Like specific Gibbs function Frequency of events s-1 [Counts]/[Time] Frequency of waves s-1 Hz hertz Frequency drift rate s-2 Hz.s-1 [ΔFrequency]/[Time] Friction kg.m.s-2 N Tangential force between two moving surfaces Friction coefficient 1 Dimensionless [Tangential force]/[Normal force] Fugacity kg.m-1.s-2 Pa Effective pressure in real gases

## SI Dimensions of Physical Quantities: ‘G’ Alphabetic List

 G: Quantity Dimension Alternatives Definition/Notes Gain of a device 1 Dimensionless [Output]/[Input], like-quantities ratio. Often in dB GDP Gross domestic product cur.s-1 currency/year [Earnings]. Economy and financee: of an administrative region g-factor of a particle 1 Dimensionless [Magnetic moment]/([Spin].[Bohr magneton]) Gradient, of electric field kg.s-3.A-1 V.m-2 [ΔEl.field strength]/[Distance] Gradient, of magnetic field kg.m-1.s-2.A-1 T.m-1 [ΔMag.flux density]/[Distance] Gradient, of mass density kg.m-4 [Mass density]/[Distance]. Same as specific density gradient Gradient, of pressure kg.m-2.s-2 N.m-3, Pa/m [Pressure]/[Distance] Gradient, thermal K.m-1 [ΔTemperature]/[Distance]. Same as temperature gradient Gravitational constant G kg-1.m3.s-2 [Force]*[Distance]2/[Mass]2. Appears in Newton’s equation Gravitational field intensity | Gravity m.s-2 [Force]/[Mass], [Acceleration] Gravitational field potential m2.s-2 [Energy]/[Mass]. Gravity | Gravitational field intensity m.s-2 [Force]/[Mass], [Acceleration] Growth rate, relative s-1 [Relative variation]/[Time] Growth rate, linear m.s-1 [ΔLength]/[Time] Growth rate, of area/surface m2.s-1 [ΔArea]/[Time] Growth rate, of volume m3.s-1 [ΔVolume]/[Time] Gyromagnetic ratio kg-1.s.A Hz.T-1 [Mag.moment]/[Angular moment of motion]

## SI Dimensions of Physical Quantities: ‘H’ Alphabetic List

 H: Quantity Dimension Alternatives Definition/Notes Half life s of a non-conservative / decaying quantity Hamiltonian kg.m2.s-2 J [Force]*[Distance], [Power]*[Time]. Like energy Hardness kg.m-1.s-2 N.m-2 [Force]/[Area]. Same as pressure Heat kg.m2.s-2 J Like energy Heat, molar kg.m2.s-2.mol-1 J.mol-1 [Heat]/[Quantity] Heat, specific m2.s-2 J.kg-1 [Heat]/[Mass] Heat capacity kg.m2.s-2.K-1 J.K-1 [ΔHeat]/[ΔTemperature] Heat capacity, molar kg.m2.s-2.K-1.mol-1 J.K-1.mol-1 [Heat capacity]/[Quantity] Heat capacity, specific m2.s-2.K-1 J.K-1.kg-1 [Heat capacity]/[Mass] Heat conductivity | Thermal conductivity kg.m.s-3.K-1 W.m-1.K-1 [Heat flux]/([Distance]*[ΔTemperature]) Heat flux kg.m2.s-3 J.s, W [ΔHeat]/[ΔTime]. Like power Heat flux density kg.s-3 W.m-2 [Heat flux]/[Area]. Same as irradiance Heat of fusion/evaporation, specific m2.s-2 J.kg-1 [Energy]/[Mass] Heat of fusion | evaporation, molar kg.m2.s-2.mol-1 J.mol-1 [Energy]/[Quantity] Hydraulic conductivity m.s-1 m/s Used for porous media Hydraulic permeability m2 1 darcy = 10-12 m2 [Velocity]*[Viscosity]/[Pressure gradient], in porous media

## SI Dimensions of Physical Quantities: ‘I’ Alphabetic List

 I: Quantity Dimension Alternatives Definition/Notes Illuminance cd.sr.m-2 lm.m-2, lx (lux) [Luminous flux]/[Area] Impact resistance kg.s-2 J.m-2 [Energy]/[Area] Impedance, acoustic kg.m-4.s-1 Pa.s/m3, reyl/m2 [ΔPressure]/[Volume flow rate]. Also acu. resistance / reactance Impedance, acoustic, specific kg.m-2.s-1 Pa.s/m , reyl [ΔPressure]*[Velocity]. Also s.acu. resistance / reactance Impedance, characteristic, electric kg.m2.s-3.A-2 V.A-1, Ω, ohm √([Mag.Permeability]/[El.Permittivity]) Impedance, inductive kg.m2.s-3.A-2 Ω (ohm) i[Angular frequency].[Inductance] Impedance, of a circuit kg.m2.s-3.A-2 Ω (ohm) Impulse kg.m.s-1 [ΔMoment of motion], [Force]*[ΔTime], [Mass]*[ΔVelocity] Income rate | Earnings cur.s-1 currency/year [Value]/[Time period]. Economy and finance Inductance kg.m2.s-2.A-2 V.s.A-1, Wb.A-1, H (henry) [ΔPotential]/[dCurrent/dt], [Mag.flux]/[Current] Induction, electric m-2.s.A C.m-2 [Charge]/[Area]. Same as electric flux density Inductive admittance kg-1.m-2.s3.A2 S (siemens) 1/[Inductive impedance] Inductive impedance kg.m2.s-3.A-2 Ω (ohm) i[Angular frequency].[Inductance] Information bit-1 bit One bit is the elementary information quantum Information flux | Baud rate bit.s-1 baud [Information]/[Time] Intensity of electric current m-2.A [Current]/[Area]. Same as current density Interest 1 % [ΔWealth]/[Wealth]. Economy and finance Interest rate s-1 %/year [Interest]/[Time period]. Economy and finance Internal energy kg.m2.s-2 J Like energy and heat Internal energy, molar kg.m2.s-2.mol-1 J.mol-1 [Internal energy]/[Quantity]. Like molar heat Internal energy, specific m2.s-2 J.kg-1 [Internal energy]/[Mass]. Like specific heat Ion mobility kg-1.m-1.s2.A m2.s-1.V-1 [Velocity]/[Electric field strength] . Ionic force (strength) m-3.mol Sum([Concentration]*[Ionic quantum charge]2). Ionic quantum charge 1 Dimensionless [Ion charge]/[Elementary charge quantum] Ionic strength (force) m-3.mol Sum([Concentration]*[Ionic quantum charge]2). Ionization energy, molar kg.m2.s-2.mol-1 J.mol-1 Energy to ionize a molecule/atom Irradiance kg.s-3 W.m-2 [Heat flux]/[Area]. Same as heat flux density

## SI Dimensions of Physical Quantities: ‘J’ Alphabetic List

 J: Quantity Dimension Alternatives Definition/Notes Joule-Thomson coefficient kg-1.m.s2.K K.Pa-1 [ΔTemperature]/[ΔPressure]

## SI Dimensions of Physical Quantities: ‘K’ Alphabetic List

 K: Quantity Dimension Alternatives Definition/Notes Katalytic activity mol.s-1 katal [ΔQuantity]/[Time]. Same as molar production rate Kinematic viscosity m2.s-1 [Dynamic viscosity]/[Density] K-space vector | Reciprocal space position m-1

## SI Dimensions of Physical Quantities: ‘L’ Alphabetic List

 L: Quantity Dimension Alternatives Definition/Notes Lagrangian kg.m2.s-2 J [Force]*[Distance], [Power]*[Time]. Like energy Laplace operator | Laplacian m-2 ∇2 = ∂2/∂x2 + ∂2/∂y2 + ∂2/∂z2 Length m m (meter) Liability | Debt cur currency Economy and finance Linear stiffness kg.s-2 N.m-1 [Force]/[Displacement]. ... of a structure Logarithmic ratio logb(A/A’) in any base b 1 Applicable to any ratio of commensurable quantities Logarithmic ratio ln(A/A’) 1 Np Neper. Uses natural logarithm Logarithmic ratio Log(P/P’)/10 1 dB (decibel) Uses base-10 logarithm. Aplies only to power P Logarithmic ratio Log(X/X’)/20 1 dB (decibel) Aplies to voltages (X=V) and currents (X=I) Logarithmic scale differential 1 Dimensionless dQ/Q, d{ln(Q)}, for any quantity Q. Also relative differential Logarithmic scale probability density 1 1/Np [Probability]/[Natural-logarithmic ratio] Loss of a device 1 Dimensionless [Output]/[Input], like-quantities ratio. Often in dB Luminance cd.m-2 [Luminosity]/[Area] Luminosity cd cd (candle) Same as luminous intensity Luminous coefficient 1 Dimensionless [Luminous efficacy]/[683 lm/W]. Same as luminous efficiency Luminous efficacy cd.sr.kg-1.m-1.s3 lm/W [Luminous flux]/[Power] Luminous efficiency 1 Dimensionless [Luminous efficacy]/[683 lm/W]. Same as luminous coefficient Luminous emittance cd.sr.m-2 lm.m-2, lx (lux) [Luminous flux]/[Area]. Same as luminous exitance Luminous energy cd.sr.s lm.s [Luminous flux]*[Time]. Known as talbot Luminous flux cd.sr lm (lumen) [Luminosity]*[Solid angle]. Same as luminous power Luminous intensity cd cd (candle) Same as luminosity Luminous power cd.sr lm (lumen) [Luminosity]*[Solid angle]. Same as luminous flux

## SI Dimensions of Physical Quantities: ‘M’ Alphabetic List

 M: Quantity Dimension Alternatives Definition/Notes Magnetic charge (bound) m-2.A - ∇.[Magnetization] , -Divergence of magnetization Magnetic dipole moment m2.A J.T-1 [Current]*[Area]. Same as magnetic moment Magnetic field gradient kg.m-1.s-2.A-1 T.m-1 [ΔMag.flux density]/[Distance] Magnetic field strength | Magnetic intensity m-1.A [Current]/[Distance] Magnetic flux kg.m2.s-2.A-1 V.s, W.s.A-1, Wb (weber) [ΔPotential]*[Time], [Power]/[dCurrent/dt] Magnetic flux density | Magnetic induction kg.s-2.A-1 Wb.m-2, T (tesla) [Mag.flux]/[Area] Magnetic induction kg.s-2.A-1 Wb.m-2, T (tesla) [Mag.flux]/[Area]. More properly magnetic flux density Magnetic intensity m-1.A [Current]/[Distance]. More properly magnetic field strength Magnetic moment m2.A J.T-1 [Current]*[Area] Magnetic permeability kg.m.s-2.A-2 H.m-1 [Mag.flux density]/[Mag.field strength] Magnetic permeability, relative 1 Dimensionless [Permeability]/[Permeability of vacuum] Magnetic quadrupole moment m3.A m.J.T-1 [Mag.dipole]*[Distance] Magnetic susceptibility 1 Dimensionless [Relative permeability]-1 Magnetic vector potential kg.m.s-2.A-1 m-1.s.V, m.T [Mag.flux density]*[Distance], [El.field strength]*[Time] Magnetization m-1.A [Mag.moment]/[Volume]. Like magnetic field strength Magnetogyric ratio kg.s-1.A-1 T.Hz-1 [Angular moment of motion]/[Mag.moment] Magnetomotive force (mmf) A [Current]*[Number of turns] Magnitude of a star 1 Dimensionless m-m’=-100.4(S/S’), where S,S’ are the luminous fluxes of two stars Mass kg kg (kilogram) Mass density kg.m-3 [Mass]/[Volume]. Same as specific density Mass density gradient | Specific density gradient kg.m-4 [Mass density]/[Distance] Mass concentration 1 Dimensionless [Partial mass]/[Total mass] Mass flow (total) kg.s-1 kg [ΔMass]/[Time]. For example, through a device Mass production rate kg.s-1 [ΔMass]/[Time]. Same as mass flow Mass, molar kg.mol-1 [Mass]/[Quantity] Mass number of an isotope 1 Dimensionless Number of protons+neutrons in the isotope nuclide Mean anomaly 1 Dimensionless Of a body on a Kepler orbit; t.sqrt(G(M1+M2)/r3) Mean motion s-1 Of a body on a Kepler orbit; sqrt(G(M1+M2)/r3) Modulus of compression kg-1.m.s2 Pa-1 [Pressure]/([ΔVolume]/[Volume]). Same as compressibility Modulus of rigidity kg.m-1.s-2 N.m-2, Pa [Stress]/[Strain]. Same as shear modulus Mobility, ionic kg-1.m-1.s2.A m2.s-1.V-1 [Velocity]/[Electric field strength] . Molality (intended as concentration) kg-1.mol mol/kg [Quantity]/[Mass] Molar charge s.A.mol-1 C.mol-1 [Charge]/[Quantity] Molar concentration m-3.mol [Quantity]/[Volume]. Same as concentration or molarity Molar concentration gradient m-4.mol [Molarity]/[Distance]. Same as molarity gradient Molar concentration ratio 1 Dimensionless [Partial quantity]/[Total quantity] Molar conductivity, electric kg-1.m-3.s3.A2.mol-1 S.m-1.mol-1 [El.conductivity]/[Concentration] Molar density m-3.mol [Quantity]/[Volume]. Same as concentration Molar energy kg.m2.s-2.mol-1 J.mol-1 [Energy]/[Quantity] Molar enthalpy kg.m2.s-2.mol-1 J.mol-1 [Enthalpy]/[Quantity]. Like molar heat Molar entropy kg.m2.s-2.K-1.mol-1 J.K-1.mol-1 [Entropy]/[Quantity] Molar free energy kg.m2.s-2.mol-1 J.mol-1 [Free energy]/[Quantity]. Also molar Helmholtz function Molar free enthalpy kg.m2.s-2.mol-1 J.mol-1 [Free enthalpy]/[Quantity]. Also molar Gibbs function Molar heat kg.m2.s-2.mol-1 J.mol-1 [Heat]/[Quantity] Molar heat capacity kg.m2.s-2.K-1.mol-1 J.K-1.mol-1 [Heat capacity]/[Quantity] Molar internal energy kg.m2.s-2.mol-1 J.mol-1 [Internal energy]/[Quantity]. Like molar heat Molar mass kg.mol-1 [Mass]/[Quantity] Molar particle count mol-1 [Count]/[Mol]. For example, the Avogadro constant Molar production rate mol.s-1 [ΔQuantity]/[Time]. Molar refractivity m3.mol-1 [(r2-1)/(r2+2)]/[Concentration], where r is the refractive index Molar relaxivity s-1.mol-1 [Relaxation rate]/[Concentration] Molar solubility m-3.mol [Quantity]/[Volume]. Same as concentration Molar volume m3.mol-1 [Volume]/[Quantity] Molarity m-3.mol [Quantity]/[Volume]. Same as concentration or molar density Molarity gradient m-4.mol [Molarity]/[Distance]. Same as concentration gradient Molecular quantum charge 1 Dimensionless [Charge of a molecule]/[Elementary charge quantum] Moment of force kg.m2.s-2 N.m [Force]*[Distance] Moment of motion kg.m.s-1 [Mass]*[Velocity], [Mass flow]*[Distance] Multiple derivatives with respect to time s-p dp/dtp, ∂p/∂tp; for p = 1,2,3,.. Multiple derivatives with respect to a length m-p dp/drp, ∂p/∂rp; for p = 1,2,3,..., r = x | y | z Mutual inductance kg.m2.s-2.A-2 V.s.A-1, Wb.A-1, H (henry) [ΔPotential]/[dCurrent/dt], [Mag.flux]/[Current]

## SI Dimensions of Physical Quantities: ‘N’ Alphabetic List

 N: Quantity Dimension Alternatives Definition/Notes Nabla ( ∇ ) | div | grad | rot | curl m-1 Any derivative-like construct with respect to a distance Notch resistance kg.s-2 J.m-2 [Energy]/[Area] Number of instances / events 1 This covers all kinds of enumerations Number density m-3 [Particles]/[Volume]. Obsolete; see particle density Number of turns 1 Often used in electric engineering

## SI Dimensions of Physical Quantities: ‘O’ Alphabetic List

 O: Quantity Dimension Alternatives Definition/Notes Osmotic pressure kg.m-1.s-2 Pa

## SI Dimensions of Physical Quantities: ‘P’ Alphabetic List

 P: Quantity Dimension Alternatives Definition/Notes Particle count, molar mol-1 [Count]/[Mol]. For example, the Avogadro constant Particle density m-3 [Count]/[Volume]. Obsolete: number density P/E Price/Earnings ratio s year [Value]/[Earnings]. Economy and finance Peltier coefficient kg.m2.s-3.A-1 W.A-1, V [Heat flux]/[Current] Perimeter | Circumference m Permeability, magnetic kg.m.s-2.A-2 H.m-1 [Mag.flux density]/[Mag.field strength] Permeability, hydraulic m2 1 darcy = 10-12 m2 [Velocity]*[Viscosity]/[Pressure gradient], in porous media Permittivity, electric kg-1.m-3.s4.A2 F.m-1 [El.flux density]/[El.field strength] Permittivity, relative 1 Dimensionless [Permittivity]/[Permittivity of vacuum]. Dielectric constant Phase | Phase angle 1 rad φ typically in exp(i(ωt+φ)) Phase drift rate s-1 rad.s-1 [Phase angle]/[Time] Pi coefficient, molar kg.m-1.s-2.mol-1 J.m-3 [ΔInternalEnergy]/[ΔVolume] Piezzoelectric coefficient kg.m.s-3.A-1 V.m-1 [Electric field strength]/([ΔLength]/[Length]) Plane angle 1 rad Poisson’s ratio 1 Dimensionless [Transversal striction]/[Londitudinal elongation] Polarization, electric m-2.s.A C.m-2 [Charge]/[Area]. Like electric flux density Porosity, superficial 1 Dimensionless [Void cross section]/[Total cross section], in porous media Porosity, volume 1 Dimensionless [Pores volume]/[Total volume], in porous media Position vector m in all Euclidean n-dimensional spaces Potential, electric kg.m2.s-3.A-1 W.A-1, J.C-1, V (volt) [Power]/[Current], [Energy]/[Charge] Power kg.m2.s-3 J.s-1, W (watt) [ΔEnergy]/[ΔTime]. Equivalent to energy flux Prandtl number 1 Dimensionless [Kinematic viscosity]/[Thermal diffusivity] Propagation loss m-1 dB/m [Ratio]/m. Generic, usable for any quantity Poynting vector kg.s-3 W.m-2 [El.field strength]/[Mag.field strength]. Like irradiance Pressure kg.m-1.s-2 N.m-2, Pa (pascal) [Force]/[Area] Pressure gradient kg.m-2.s-2 N.m-3, Pa/m [Pressure]/[Distance] Price | Value cur currency Economy and finance Probability of an event 1 Real number in a dimensionless interval [0,1] Probability density on log-scale 1 Np-1 [Probability]/[Natural-logarithmic ratio] Purchase | Transaction value cur currency Economy and finance

## SI Dimensions of Physical Quantities: ‘R’ Alphabetic List

 R: Quantity Dimension Alternatives Definition/Notes Radiance kg.s-3.sr-1 W.m-2.sr-1 ([Power]/[Area])/[Solid angle] Radiation dose m2.s-2 J.kg-1, Gy (gray) [Energy]/[Mass] Radiation dose rate m2.s-3 Gy.s-1 [Absorbed dose]/[Time] Radioactivity s-1 Bq (becquerel) [Counts]/[Time] Radius of curvature m of a line in plane/space or surface in space Rotational stiffness kg.m2.s-2.rad-1 N.m.rad-1 [Moment of force]/[Angle]. ... of a structure Ratio of commensurable quantities 1 Dimensionless Q1/Q2, with Q1 and Q2 having the same dimension Reactance, acoustic kg.m-4.s-1 Pa.s/m3, reyl/m2 [ΔPressure]/[Volume flow rate]. Also acu. impedance / resistance Reactance, acoustic, specific kg.m-2.s-1 Pa.s/m , reyl [ΔPressure]*[Velocity]. Also s.acu. impedance / resistance Reactance, capacitive kg.m2.s-3.A-2 Ω (ohm) 1/(i[Angular frequency].[Capacitance]) Reciprocal space position | K-space vector m-1 Redox potential kg.m2.s-3.A-1 V (volt) Same as reduction potential Reduction potential kg.m2.s-3.A-1 V (volt) Same as redox potential Refractive index 1 Dimensionless Light speeds ration (in a medium)/(in vacuum) Refractivity, molar m3.mol-1 [(r2-1)/(r2+2)]/[Concentration] Refractivity, specific m3.kg-1 [(r2-1)/(r2+2)]/[Specific density], Relative atomic mass | Atomic weight au atomic units Average over a typical isotopic composition Relative differential 1 Dimensionless dQ/Q, d{ln(Q)}, for any quantity Q. Also log-scale differential Relative evolution rate s-1 d{ln(Q)}/dt = (dQ/dt)/Q. Also log-scale evolution rate Relative permeability, magnetic 1 Dimensionless [Permeability]/[Permeability of vacuum] Relative permittivity, electric 1 Dimensionless [Permittivity]/[Permittivity of vacuum]. Dielectric constant Relative variation 1 Dimensionless ΔQ/Q, for any quantity Q Relativistic displacement four-tensor (Dμν) m-1.A Like magnetic intensity Relativistic electromagnetic field tensor (Fμν) kg.s-2.A-1 T Like magnetic flux density Relativistic four-current (Jα) m-2.A Like current density and [Charge]*[c] Relativistic four-potential (Aα) kg.m.s-2.A-1 m-1.s.V, m.T Like magnetic vector potential and [El.potential]/[c] Relaxation rate s-1 1/[Relaxation time]. Used for returns to equilibria Relaxation time s Used for returns to equilibria Relaxivity, molar s-1.mol-1 [Relaxation rate]/[Concentration] Reluctance, magnetic kg-1.m-1.s2.A2 m.H-1 1/[Permeability] Resistance, acoustic kg.m-4.s-1 Pa.s/m3, reyl/m2 [ΔPressure]/[Volume flow rate]. Also acu. impedance / reactance Resistance, acoustic, specific kg.m-2.s-1 Pa.s/m , reyl [ΔPressure]*[Velocity]. Also s.acu. impedance / reactance Resistance, electric kg.m2.s-3.A-2 V.A-1, Ω (ohm) [ΔPotential]/[Current] Resistance, thermal kg-1.m-2.s3K K/W of a device. [ΔT]/[Power]. Resistance to impact kg.s-2 J.m-2 [Energy]/[Area]. Like notch resistance Resistivity, electric kg.m3.s-3.A-2 Ω.m ([Resistance]*[Length])/[Area] Return on asset / equity s-1 %/year ([ΔValue]/[Value])/[Time period]. Economy and finance Reynolds number 1 Dimensionless [Velocity]*[length]/[Kinematic viscosity] RF attenuation m-1 dB/m [Ratio]/m. Used mostly for radiation

## SI Dimensions of Physical Quantities: ‘S’ Alphabetic List

 S: Quantity Dimension Alternatives Definition/Notes Sale | Transaction value cur currency Economy and finance Sales flow | Transactions volume cur.s-1 [Value]/[Time period]. Economy and Finance Seeback coefficient kg.m2.s-3.A-1.K-1 V.K-1 [ΔPotential]/[ΔTemperature]. Same as thermoelectric power Self-diffusion coefficient m2.s-1 [Distance2]/[Time] Settling rate s-1 typically dB/s [Ratio]/[ΔTime] Settling time s typically dB/s Used to describe transient phenomena Shear modulus kg.m-1.s-2 N.m-2, Pa [Stress]/[Strain]. Like Young modulus Softening point K Temperature at which hardness drops below a level Solid angle 1 sr (steradian) Solubility, molar m-3.mol [Quantity]/[Volume]. Same as concentration Sonic attenuation m-1 dB/m [Power ratio]/m. Used in acoustics Specific acoustic impedance kg.m-2.s-1 Pa.s/m , reyl [ΔPressure]*[Velocity]. Also s.acu. resistance / reactance Specific acoustic conductance kg-1.m2.s reyl-1 Also specific acoustic susceptance Specific charge kg-1.s.A C.kg-1 [Charge]/[Mass]. Charge/mass ratio Specific density kg.m-3 [Mass]/[Volume]. Same as density of mass Specific density gradient kg.m-4 [Mass density]/[Distance]. Same as mass density gradient Specific energy m2.s-2 J.kg-1 [Energy]/[Mass] Specific enthalpy m2.s-2 J.kg-1 [Enthalpy]/[Mass]. Like specific heat Specific entropy m2.s-2.K-1 J.K-1.kg-1 [Entropy]/[Mass] Specific free energy m2.s-2 J.kg-1 [Free energy]/[Mass]. Also specific Helmholtz function Specific free enthalpy m2.s-2 J.kg-1 [Free enthalpy]/[Mass]. Also specific Gibbs function Specific heat m2.s-2 J.kg-1 [Heat]/[Mass] Specific heat capacity m2.s-2.K-1 J.K-1.kg-1 [Heat capacity]/[Mass] Specific internal energy m2.s-2 J.kg-1 [Internal energy]/[Mass]. Like specific heat Specific refractivity m3.kg-1 [(r2-1)/(r2+2)]/[Specific density] Specific volume m3.kg-1 [Volume]/[Mass] Speed m.s-1 [Distance]/[Time]. Same as velocity Spin 1 Dimensionless of a quantum particle Star magnitude 1 Dimensionless m-m’ = -100.4(S/S’), where S,S’ are luminous fluxes of two stars Stiffness, linear kg.s-2 N.m-1 [Force]/[Displacement]. ... of a structure Stiffness, rotational kg.m2.s-2.rad-1 N.m.rad-1 [Moment of force]/[Angle]. ... of a structure Strain (mechanical) 1 Dimensionless [ΔLength]/[Length] Relative deformation Strain point K Temperature at which viscosity drops below 1013.5 Pa.s Strength, compressive kg.m-1.s-2 N.m-2, Pa [Force]/[Area]. Like pressure Strength, dielectric kg.m.s-3.A-1 V.m-1 [ΔPotential]/[Distance]. Same as electric strength Strength, electric field | Electric intensity kg.m.s-3.A-1 V.m-1 [ΔPotential]/[Distance] Strength, ionic m-3.mol Sum([Concentration]*[Ionic quantum charge]2). Strength, magnetic field | Magnetic intensity m-1.A [Current]/[Distance] Strength, tensile kg.m-1.s-2 N.m-2, Pa [Force]/[Area]. Same as pressure Superficial porosity 1 Dimensionless [Void cross section]/[Total cross section], in porous media Superficial velocity m.s-1 m/s In porous media; as if the space was filled only by the fluid Surface area m2 [Distance]*[Distance]. Applicable to 3D bodies Surface density of charge m-2.s.A C.m-2 [Charge]/[Area] Surface element m2 [Distance]*[Distance]. Same as area Surface energy kg.s-2 J/m2 [Energy]/[Area]. Same as surface tension Surface growth rate m2.s-1 [ΔArea]/[Time] Surface tension kg.s-2 N/m [Force]/[Length]. Same as surface energy Susceptance, acoustic, specific kg-1.m2.s reyl-1 Also specific acoustic conductance Susceptance, capacitive kg-1.m-2.s3.A2 S (siemens) 1/[Reactance] Susceptibility, magnetic 1 Dimensionless [Relative permeability]-1 Stress kg.m-1.s-2 Pa, N.m-2 [Force]/[Area]. Same as pressure

## SI Dimensions of Physical Quantities: ‘T’ Alphabetic List

 T: Quantity Dimension Alternatives Definition/Notes Temperature K K (kelvin) Temperature gradient K.m-1 [ΔTemperature]/[Distance]. Same as thermal gradient Tensile strength kg.m-1.s-2 N.m-2, Pa [Force]/[Area]. Same as pressure Tension kg.m-1.s-2 Pa, N.m-2 [Force]/[Area]. Like pressure Thermal conductivity kg.m.s-3.K-1 W.m-1.K-1 [Heat flux]/([Distance]*[ΔTemperature]). Same as heat conductivity Thermal diffusivity m2.s-1 ([∂Temperatute]/[∂Time])/[∇2Temperature]. Thermal expansion coefficient K-1 ([ΔLength]/[Length])/[Temperature] Thermal gradient K.m-1 [ΔTemperature]/[Distance]. Same as temperature gradient Thermal resistance kg-1.m-2.s3K K/W of a device. [ΔT]/[Power]. Thermodynamic force kg.m.s-2.mol-1 N/mol [ΔChemical potential]/[Distance] Thermoelectric power | Thermopower kg.m2.s-3.A-1.K-1 V.K-1 [ΔPotential]/[ΔTemperature]. Same as Seeback coefficient Thickness m usually referred to planar structures Thomson coefficient kg.m2.s-3.A-1.K-1 W.K-1.A-1 [Heat flux]/([ΔTemperature]*[Current]) Time s s (second) Torque | Moment of force kg.m2.s-2 N.m [Force]*[Distance] Traction kg.m.s-2 N (newton) Maximum tangential force before slipping Traction coefficient 1 Dimensionless [Traction]/[Weight] Transaction value | Sale | Purchase cur currency Economy and finance Transactions count 1 Dimensionless Economy and finance Transactions rate | Activity s-1 1/year [Transactions]/[Time period]. Economy and finance Transactions volume | Sales flow cur.s-1 [Value]/[Time period]. Economy and Finance Transmission loss m-1 dB/m [Ratio]/m. Generic, usable for any quantity

## SI Dimensions of Physical Quantities: ‘V’ Alphabetic List

 V: Quantity Dimension Alternatives Definition/Notes V-number | Abbé number | Constringence 1 Dimensionless VD = (nD-1)/(nF-nC) Value | Price cur currency Economy and finance van der Waals constant: a kg.m5.s-2.mol-2 Pa.m6 a in (p+a/V2)(V-b)=RT, where V is molar volume van der Waals constant: b m3.mol-1 b in (p+a/V2)(V-b)=RT, where V is molar volume Variance of current noise nJ2 s.A2 A2/Hz [Current]2/[Bandwidth] Variance of voltage noise nV2 kg2.m4.s-5.A-2 V2/Hz [Voltage]2/[Bandwidth] Vector potential, magnetic kg.m.s-2.A-1 m-1.s.V, m.T [Mag.flux density]*[Distance], [El.field strength]*[Time] Velocity m.s-1 m/s [Distance]/[Time]. Same as speed Velocity, advection m.s-1 m/s In porous media; actual progress along pressure gradient Velocity, of money (circulation) s-1 1/year [Transactions]/[Time period]. Economy and finance Velocity, superficial m.s-1 m/s In porous media; as if the space was filled only by the fluid Verdet constant kg-1.m-1.s2.A1 rad.m-1.T-1 ([Angle]/[Length])/[Magnetic flux density] Virial coefficient: second m3.mol-1 B in pV/(nRT)=1+B(n/V)+C(n/V)2+D(n/V)3+... Virial coefficient: third m6.mol-2 C in pV/(nRT)=1+B(n/V)+C(n/V)2+D(n/V)3+... Virial coefficient: fourth m9.mol-3 C in pV/(nRT)=1+B(n/V)+C(n/V)2+D(n/V)3+... Viscosity, dynamic kg.m-1.s-1 Pa.s ([Force]/[Area])/[ΔVelocity] Viscosity, kinematic m2.s-1 [Dynamic viscosity]/[Density] Voltage | Electromotive force kg.m2.s-3.A-1 V [ΔPotential] Voltage noise, variance nV2 kg2.m4.s-5.A-2 V2/Hz [Voltage]2/[Bandwidth] Volume m3 [Area]*[Distance] Volume concentration 1 Dimensionless [Partial volume]/[Total volume] Volume flow m3.s-1 [Volume]/[Time]. For example, through a device Volume growth rate m3.s-1 [Volume]/[Time]. For example, of a crystal Volume porosity 1 Dimensionless [Pores volume]/[Total volume], in porous media

## SI Dimensions of Physical Quantities: ‘W’ Alphabetic List

 W: Quantity Dimension Alternatives Definition/Notes Wave function for N particles (quantum) m-3N/2 tentative |ψ|2dτN is a dimensionless probability element. Wavelength m [Wave velocity]/[Frequency] Wavenumber m-1 [Number of waves]/[Distance] Wealth | Asset cur currency Economy and finance Work function kg.m2.s-2 J, eV [Energy] needed to remove an electron

## SI Dimensions of Physical Quantities: ‘Y’ Alphabetic List

 Y: Quantity Dimension Alternatives Definition/Notes Young modulus kg.m-1.s-2 N.m-2, Pa [Stress]/[Strain]. Like shear modulus

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