## Quantities

absolute activity, absolute lethal concentration ()absolute lethal dose ()absorbance, absorbed (spectral) photon flux densityabsorbed (spectral) radiant power densityabsorptance, absorption cross-section, acceleration of free fall, acceleration, acceptable daily intake ()acceptor number ()actinic flux activation energy (Arrhenius activation energy)activity (relative activity), activity coefficient, ,activity, affinity of reaction, amount concentration, amount fraction, ( for gaseous mixtures)amount of substance, angleangle of optical rotation, angular frequency, angular momentum, atomic mass atomic number (proton number), attenuance, bandgap energy benchmark dose () and lower effective dose ()biochemical (biological) oxygen demand ()biological exposure index ()biological tolerance values for working materials (Biologische Arbeitsstoff Toleranz Werte (BAT))bond-dissociation energy, Brewster angle, capacitance, cathodic transfer coefficient, ceiling value ()Celsius temperature, , centrifugal (centripetal) acceleration, centrifugal force, centrifugal radius, characteristic mass for integrated absorbance, characteristic mass for peak absorption, characteristic mass, charge density, charge number, charge number ,,chemical flux, chemical oxygen demand ()chemical potential, chemical shift, clearance, coherence length, collision cross-section, collision density, collision diameter, collision efficiency, collision frequency, compression factor, conductivity, ,contact anglecorrosion potential, coulomb integral, coupling constant (spin-spin), critical excitation energy, critical micelle concentrationcritical pressure, critical temperature, current densitydecadic absorbance, decay constantdegeneracydegree of reaction, density, dielectric polarization, differential capacitancediffusion coefficient, dilution rate, disintegration energy, dissociation energy, ,distribution ratio, dose equivalent, doubling time driving force (affinity) of a reaction, dynamic viscosity, efficiency of nebulization, efficiency, electric charge, electric coherence length, electric conductance, electric current density, electric current, electric dipole moment, electric displacement, electric field (strength), electric mobility, ,electric polarizability, electric potential, electric resistance, electro-osmotic hold-up time, electro-osmotic mobility, or electrode current density, electrode potential, electrokinetic potential, electromotive force, electrophoretic mobility, emission anisotropyemittance, energy storage efficiency, energy, enrichment factor, enthalpy of activation, enthalpy, entropy of activation, entropy, extent of reaction, extraction factor, flow rate of a quantityflow resistance parameter, fluence rate, fluence, ,, fluidity, force, fraction extracted, frequency, , frequency, ,friction factor, frictional coefficient, fugacity coefficient, fugacity, , functionality, valuegain, generation time, Gibbs energy (function), Gibbs energy of activation (standard free energy of activation), Gibbs film elasticityheat capacity of activation, heat capacity, heat flux, heat, ,Helmholtz energy (function), Huggins coefficient, hydrolysis ratio, illuminance, ,impact parameter, impedance, inhibitory concentration ()inhibitory dose ()inner electric potential, integral capacitanceinternal absorptance, internal energy, interparticle porosity, interparticle volume of the column, intrinsic activation energy, ionic conductivityionic strength, ionic transport number, ionization energy, irradiance (at a point of a surface), kinematic viscosity, kinetic energy, length, level width, lifetimelifetime, linear strain, , local efficiency of atomization, local fraction atomized, , local fraction desolvated, , local fraction volatilized, , luminanceluminous intensity magnetic field strength, magnetic flux density, magnetic flux, magnetic moment, , magnetic susceptibilitymagnetic susceptibility, magnetizability, magnetogyric ratio, mass concentration, , mass distribution ratio, mass distribution ratio, mass excess, mass flow rate, mass fraction, mass number, mass, mean free path, median effective concentration ()median effective dose ()median lethal concentration ()median lethal dose ()median lethal time ()median narcotic concentration ()median narcotic dose ()microscopic cross-section, migration time of micelles, migration time, minimum consumption time, minimum lethal concentration ()minimum lethal dose ()mobility (general)mobility, modulus of elasticity, molality, , molar absorption coefficient, molar refraction, moment of a force, moment of inertia, , momentum, mutual inductance, network-chain molar mass, neutron number, nominal linear flow, normal stress, number concentration, ,number density, number flow rate, number of entities, order of reaction, osmolality, osmotic coefficient, osmotic concentration, osmotic pressure, outer electric potential, overpotential, pair correlation length, partial mass density, partition constant, partition ratio, peak resolution, period, permeability, permittivity, pHphase ratio, phase ratio, photon exitance, photon exposure, photon flow, photon fluence rate, photon fluence, ,photon flux, ,photon irradiance, photon number, photon radiance, plate number, polarizabilitypolarization, polarization, potential energy, , power, pre-exponential factor, pressure, productivity, quantum yield, radiance, radiant (energy) flux, , [obsolete]radiant energy density, , radiant energy, radiant exitance, radiant exposure, radiant intensity, radiant power, radiative lifetime, rate of conversion, rate of fluid consumption, rate of reaction, reactance, reaction cross-section, reduced mass, reflectance, refractive index, relative atomic mass (atomic weight), relative density, relative molecular mass, relative permeability, relative permittivity, relative retardation, relative retention, residence time (hydraulic retention time), residual emission anisotropyresistance, resistivity, resolving power, response time, responsivity, retardation factor, retardation factor, retention factor, retention index, valuerotational correlation time, or rotational frequency, rotational relaxation time, rotational term, saturation fraction, scattering angle, sedimentation coefficient, selectivity factor, self inductance, sensitivity, separation factor, separation factor, separation number, shear modulus, shear strain, shear stress, shielding constant, solid angle, , solvophobicity parameter, specific activity, specific heat capacity, specific volume, spectral fluence rate, spectral irradiance, spectral photon exitance, spectral photon flow, spectral photon flux (photon irradiance), spectral photon radiance, spectral radiance, spectral radiant energy, spectral radiant exitance, spectral radiant intensity, spectral radiant power, spectral sensitivity, specular reflectance (reflection factor), speed, , spin-orbit coupling constant, stoichiometric number, Stokes number, substance fraction, surface amount, , surface charge density, surface concentration, surface coverage, surface density, , surface excess concentration (at an interface), surface excess, surface tension, , symmetry number, term, thermal conductance, thermal conductivity, thermal resistance, thermodynamic temperature, threshold energy, time constant, time, time, torque, total consumption time , total velocity of the analyte, transit time, transition wavenumber, transmittance, , transport number, travel time, turbidity, velocity, ,vibrational term, viscosity function, volume flow rate, volume fraction, volume of activation, volume strain, wavelength, wavenumber, , weight, work, ,yield,