Skip to content

ISQ System

Namespace: mp_units::isq

Module: mp_units.systems

Header: <mp-units/systems/isq.h>

Secondary Headers:

  • <mp-units/systems/isq/atomic_and_nuclear_physics.h>
  • <mp-units/systems/isq/base_quantities.h>
  • <mp-units/systems/isq/condensed_matter_physics.h>
  • <mp-units/systems/isq/electromagnetism.h>
  • <mp-units/systems/isq/information_science_and_technology.h>
  • <mp-units/systems/isq/light_and_radiation.h>
  • <mp-units/systems/isq/mechanics.h>
  • <mp-units/systems/isq/shared_quantities.h>
  • <mp-units/systems/isq/si_quantities.h>
  • <mp-units/systems/isq/space_and_time.h>
  • <mp-units/systems/isq/thermodynamics.h>

Dimensions

Name Symbol
dim_amount_of_substance N
dim_electric_current I
dim_length L
dim_luminous_intensity J
dim_mass M
dim_thermodynamic_temperature Θ
dim_time T
dim_traffic_intensity A

Quantities

Quantity Character Dimension Traits Kind of Parent Equation Hierarchy
Bragg_angle scalar — angular_measure angular_measure — view
Burgers_vector vector L length displacement — view
Curie_temperature scalar Θ ≥ 0 thermodynamic_temperature critical_thermodynamic_temperature — view
Debye_Waller_factor scalar — ≥ 0 dimensionless dimensionless — view
Debye_angular_frequency scalar T⁻¹ angular_frequency angular_frequency — view
Debye_angular_repetency scalar L⁻¹ ≥ 0 angular_repetency angular_repetency alias to Debye_angular_wavenumber view
Debye_angular_wavenumber scalar L⁻¹ ≥ 0 angular_repetency angular_repetency — view
Debye_temperature scalar Θ ≥ 0 thermodynamic_temperature thermodynamic_temperature — view
Fermi_angular_repetency scalar L⁻¹ ≥ 0 angular_repetency angular_repetency alias to Fermi_angular_wavenumber view
Fermi_angular_wavenumber scalar L⁻¹ ≥ 0 angular_repetency angular_repetency — view
Fermi_energy scalar L²MT⁻² energy energy — view
Fermi_temperature scalar Θ ≥ 0 thermodynamic_temperature thermodynamic_temperature — view
Gibbs_energy scalar L²MT⁻² energy enthalpy — view
Gibbs_function scalar L²MT⁻² energy enthalpy alias to Gibbs_energy view
Gruneisen_parameter scalar — dimensionless dimensionless — view
Hall_coefficient scalar L³I⁻¹T⁻¹ kind Hall_coefficient — electric_field_strength / (magnetic_flux_density * electric_current_density) view
Hamming_distance scalar — ≥ 0 dimensionless dimensionless — view
Helmholtz_energy scalar L²MT⁻² energy internal_energy — view
Helmholtz_function scalar L²MT⁻² energy internal_energy alias to Helmholtz_energy view
Joule_Thomson_coefficient scalar LΘT²M⁻¹ kind Joule_Thomson_coefficient — thermodynamic_temperature / pressure view
London_penetration_depth scalar L ≥ 0 length distance — view
Lorenz_coefficient scalar L⁴M²I⁻²Θ⁻²T⁻⁶ kind Lorenz_coefficient — thermal_conductivity / (conductivity * thermodynamic_temperature) view
Massieu_function scalar L²MΘ⁻¹T⁻² kind Massieu_function — Helmholtz_energy / thermodynamic_temperature view
Neel_temperature scalar Θ ≥ 0 thermodynamic_temperature critical_thermodynamic_temperature — view
Peltier_coefficient scalar L²MI⁻¹T⁻³ electric_potential voltage heat_flow_rate / electric_current view
Planck_function scalar L²MΘ⁻¹T⁻² kind Planck_function — Gibbs_energy / thermodynamic_temperature view
Poisson_number scalar — dimensionless dimensionless width / length view
Poynting_vector vector MT⁻³ kind Poynting_vector — electric_field_strength * magnetic_field_strength view
Richardson_constant scalar IL⁻²Θ⁻² kind Richardson_constant — electric_current_density / pow<2>(thermodynamic_temperature) view
Seebeck_coefficient scalar L²MI⁻¹Θ⁻¹T⁻³ kind Seebeck_coefficient — thermoelectric_voltage / thermodynamic_temperature view
Thomson_coefficient scalar L²MI⁻¹Θ⁻¹T⁻³ Seebeck_coefficient Seebeck_coefficient heat_flow_rate / (electric_current * thermodynamic_temperature) view
Young_modulus scalar ML⁻¹T⁻² pressure normal_stress alias to modulus_of_elasticity view
absorbed_dose scalar L²T⁻² kind
≥ 0
absorbed_dose — energy / mass view
absorptance scalar — ≥ 0 dimensionless dimensionless radiant_flux / radiant_flux view
acceleration vector LT⁻² kind acceleration — velocity / duration view
acceleration_of_free_fall vector LT⁻² acceleration acceleration — view
acceptor_density scalar L⁻³ ≥ 0 number_density number_density — view
action scalar L²MT⁻¹ kind
≥ 0
action — energy * time view
active_energy scalar L²MT⁻² energy energy instantaneous_power * time view
active_power scalar L²MT⁻³ power power inverse(period) * (instantaneous_power * time) view
activity scalar T⁻¹ kind
≥ 0
activity — inverse(duration) view
admittance complex scalar I²T³L⁻²M⁻¹ kind admittance — inverse(impedance) view
admittance_of_vacuum complex scalar I²T³L⁻²M⁻¹ admittance admittance inverse(impedance_of_vacuum) view
altitude scalar L length length possibly_negative view
amount_of_heat scalar L²MT⁻² energy internal_energy alias to heat view
amount_of_substance scalar N kind
≥ 0
amount_of_substance — — view
angular_acceleration vector T⁻² kind angular_acceleration — angular_velocity / duration view
angular_displacement scalar — angular_measure angular_measure alias to rotational_displacement view
angular_frequency scalar T⁻¹ kind angular_frequency — phase_angle / duration view
angular_impulse vector L²MT⁻¹ angular_momentum angular_momentum moment_of_force * time view
angular_measure scalar — kind angular_measure dimensionless arc_length / radius view
angular_momentum vector L²MT⁻¹ kind angular_momentum — position_vector * momentum view
angular_reciprocal_lattice_vector vector L⁻¹ angular_repetency wave_vector — view
angular_repetency scalar L⁻¹ kind
≥ 0
angular_repetency — inverse(wavelength) view
angular_velocity vector T⁻¹ kind angular_velocity — angular_displacement / duration view
angular_wavenumber scalar L⁻¹ kind
≥ 0
angular_repetency — alias to angular_repetency view
apparent_admittance scalar I²T³L⁻²M⁻¹ admittance admittance — view
apparent_impedance scalar L²MI⁻²T⁻³ impedance impedance — view
apparent_power scalar L²MT⁻³ complex_power complex_power — view
arc_length scalar L ≥ 0 length length alias to path_length view
area scalar L² kind
≥ 0
area — pow<2>(length) view
areic_charge scalar ITL⁻² kind surface_density_of_electric_charge — alias to surface_density_of_electric_charge view
areic_electric_charge scalar ITL⁻² kind surface_density_of_electric_charge — alias to surface_density_of_electric_charge view
atomic_displacement_vector vector L length displacement — view
atomic_scattering_factor complex scalar — kind atomic_scattering_factor dimensionless — view
attenuation scalar L⁻¹ kind
≥ 0
attenuation — inverse(distance) view
binary_digit_rate scalar T⁻¹ ≥ 0 transfer_rate transfer_rate — view
bit_period scalar T ≥ 0 duration period_duration alias to period_of_binary_digits view
bit_rate scalar T⁻¹ ≥ 0 transfer_rate transfer_rate alias to binary_digit_rate view
breadth scalar L ≥ 0 length length alias to width view
bulk_modulus scalar ML⁻¹T⁻² pressure pressure alias to modulus_of_compression view
call_intensity scalar T⁻¹ kind
≥ 0
call_intensity — inverse(duration) view
calling_rate scalar T⁻¹ kind
≥ 0
call_intensity — alias to call_intensity view
capacitance scalar I²T⁴L⁻²M⁻¹ kind
≥ 0
capacitance — electric_current * time / electric_potential view
carrier_lifetime scalar T ≥ 0 duration time_constant — view
carrier_power scalar L²MT⁻³ ≥ 0 power power — view
catalytic_activity scalar NT⁻¹ kind
≥ 0
catalytic_activity — amount_of_substance / time view
clock_frequency scalar T⁻¹ ≥ 0 frequency frequency — view
clock_rate scalar T⁻¹ ≥ 0 frequency frequency alias to clock_frequency view
coefficient_of_heat_transfer scalar MΘ⁻¹T⁻³ kind
≥ 0
coefficient_of_heat_transfer — density_of_heat_flow_rate / thermodynamic_temperature view
coefficient_of_static_friction scalar — ≥ 0 dimensionless dimensionless alias to static_friction_coefficient view
coefficient_of_thermal_insulance scalar ΘT³M⁻¹ kind
≥ 0
thermal_insulance — alias to thermal_insulance view
coercive_field_strength scalar IL⁻¹ magnetization magnetic_field_strength alias to coercivity view
coercivity scalar IL⁻¹ magnetization magnetic_field_strength — view
coherence_length scalar L ≥ 0 length distance — view
colour_temperature scalar Θ ≥ 0 thermodynamic_temperature thermodynamic_temperature — view
completed_call_intensity scalar T⁻¹ ≥ 0 call_intensity call_intensity — view
complex_admittance complex scalar I²T³L⁻²M⁻¹ kind admittance — alias to admittance view
complex_impedance complex scalar L²MI⁻²T⁻³ kind impedance — alias to impedance view
complex_power complex scalar L²MT⁻³ kind complex_power — voltage_phasor * electric_current_phasor view
compressibility scalar LT²M⁻¹ kind compressibility — inverse(volume) * (volume / pressure) view
conductance scalar I²T³L⁻²M⁻¹ admittance admittance inverse(resistance) view
conductance_for_alternating_current scalar I²T³L⁻²M⁻¹ admittance conductance — view
conductivity scalar I²T³L⁻³M⁻¹ kind conductivity — electric_current_density / electric_field_strength view
correlated_colour_temperature scalar Θ ≥ 0 thermodynamic_temperature thermodynamic_temperature — view
coupling_factor scalar — ≥ 0 dimensionless dimensionless mutual_inductance / pow<1, 2>(pow<2>(self_inductance)) view
critical_magnetic_flux_density scalar MI⁻¹T⁻² magnetic_flux_density magnetic_flux_density — view
critical_thermodynamic_temperature scalar Θ ≥ 0 thermodynamic_temperature thermodynamic_temperature — view
cubic_expansion_coefficient scalar Θ⁻¹ kind cubic_expansion_coefficient — inverse(volume) * (volume / thermodynamic_temperature) view
curvature scalar L⁻¹ kind
≥ 0
curvature — inverse(radius_of_curvature) view
damping_coefficient scalar T⁻¹ kind
≥ 0
damping_coefficient — inverse(time_constant) view
decision_content scalar — ≥ 0 dimensionless dimensionless — view
density scalar ML⁻³ kind
≥ 0
mass_density — alias to mass_density view
density_of_heat_flow_rate scalar MT⁻³ kind
≥ 0
density_of_heat_flow_rate — heat_flow_rate / area view
density_of_vibrational_states scalar TL⁻³ kind
≥ 0
density_of_vibrational_states — number_of_vibrational_modes / (volume * angular_frequency) view
dew_point_temperature scalar Θ ≥ 0 thermodynamic_temperature thermodynamic_temperature — view
diameter scalar L ≥ 0 length width — view
dimensionless scalar 1 kind dimensionless — — —
displacement vector L length length — view
displacement_current scalar I electric_current electric_current displacement_current_density * area view
displacement_current_density vector IL⁻² electric_current_density electric_current_density electric_flux_density / time view
distance scalar L ≥ 0 length path_length — view
donor_density scalar L⁻³ ≥ 0 number_density number_density — view
dose_equivalent scalar L²T⁻² kind
≥ 0
dose_equivalent — absorbed_dose * ionizing_radiation_quality_factor view
drag_coefficient scalar — ≥ 0 dimensionless dimensionless drag_force / (mass_density * pow<2>(speed) * area) view
drag_factor scalar — ≥ 0 dimensionless dimensionless alias to drag_coefficient view
drag_force vector LMT⁻² force force — view
duration scalar T kind
≥ 0
duration — — view
dynamic_friction_factor scalar — ≥ 0 dimensionless dimensionless alias to kinetic_friction_factor view
dynamic_friction_force vector LMT⁻² force force alias to kinetic_friction_force view
dynamic_viscosity scalar ML⁻¹T⁻¹ kind dynamic_viscosity — shear_stress * length / velocity view
effective_mass scalar M mass mass possibly_negative view
electric_charge scalar IT kind electric_charge — electric_current * time view
electric_charge_density scalar ITL⁻³ kind electric_charge_density — electric_charge / volume view
electric_constant scalar I²T⁴L⁻³M⁻¹ kind electric_constant — inverse(magnetic_constant * pow<2>(speed_of_light_in_vacuum)) view
electric_current scalar I kind electric_current — — view
electric_current_density vector IL⁻² kind electric_current_density — electric_charge_density * velocity view
electric_current_phasor complex scalar I electric_current electric_current — view
electric_dipole_moment vector ILT kind electric_dipole_moment — electric_charge * displacement view
electric_displacement vector ITL⁻² electric_polarization electric_polarization alias to electric_flux_density view
electric_field_strength vector LMI⁻¹T⁻³ kind electric_field_strength — force / electric_charge view
electric_flux scalar IT kind electric_flux — electric_flux_density * area view
electric_flux_density vector ITL⁻² electric_polarization electric_polarization — view
electric_polarization vector ITL⁻² kind electric_polarization — electric_dipole_moment / volume view
electric_potential scalar L²MI⁻¹T⁻³ kind electric_potential — energy / (electric_current * time) view
electric_potential_difference scalar L²MI⁻¹T⁻³ electric_potential electric_potential — view
electric_susceptibility scalar — dimensionless dimensionless electric_polarization / electric_constant / electric_field_strength view
electric_tension scalar L²MI⁻¹T⁻³ electric_potential electric_potential alias to voltage view
electric_tension_phasor complex scalar L²MI⁻¹T⁻³ electric_potential voltage alias to voltage_phasor view
electromagnetic_energy_density scalar ML⁻¹T⁻² ≥ 0 energy_density energy_density electric_field_strength * electric_flux_density view
electromagnetism_power scalar L²MT⁻³ power power voltage * electric_current view
electron_affinity scalar L²MT⁻² energy energy — view
electron_density scalar L⁻³ ≥ 0 number_density number_density — view
elementary_charge scalar IT electric_charge electric_charge — view
emissivity scalar — ≥ 0 dimensionless dimensionless radiant_exitance / radiant_exitance view
energy scalar L²MT⁻² kind energy — mass * pow<2>(length) / pow<2>(time) view
energy_density scalar ML⁻¹T⁻² kind
≥ 0
energy_density — mass / (length * pow<2>(time)) view
energy_density_of_states scalar T²L⁻⁵M⁻¹ kind
≥ 0
energy_density_of_states — number_of_states / (volume * energy) view
enthalpy scalar L²MT⁻² energy internal_energy — view
entropy scalar L²MΘ⁻¹T⁻² kind
≥ 0
entropy — kinetic_energy / thermodynamic_temperature view
equilibrium_position_vector vector L length particle_position_vector — view
equivalent_binary_digit_rate scalar T⁻¹ ≥ 0 transfer_rate binary_digit_rate — view
equivalent_binary_storage_capacity scalar — ≥ 0 storage_capacity storage_capacity — view
equivalent_bit_rate scalar — — — alias to bit_rate —
error_probability scalar — ≥ 0 dimensionless dimensionless — view
exchange_integral scalar L²MT⁻² energy energy — view
extinction scalar L⁻¹ kind
≥ 0
attenuation — alias to attenuation view
force vector LMT⁻² kind force — mass * length / pow<2>(time) view
frequency scalar T⁻¹ kind
≥ 0
frequency — inverse(period_duration) view
fundamental_lattice_vector vector L length lattice_vector — view
fundamental_reciprocal_lattice_vector vector L⁻¹ angular_repetency angular_reciprocal_lattice_vector — view
gap_energy scalar L²MT⁻² ≥ 0 energy energy — view
gauge_pressure scalar ML⁻¹T⁻² pressure pressure — view
group_speed scalar LT⁻¹ kind group_speed — angular_frequency / angular_repetency view
heat scalar L²MT⁻² energy internal_energy — view
heat_capacity scalar L²MΘ⁻¹T⁻² kind
≥ 0
heat_capacity — heat / thermodynamic_temperature view
heat_flow_rate scalar L²MT⁻³ kind
≥ 0
heat_flow_rate — heat / time view
height scalar L ≥ 0 length altitude — view
hole_density scalar L⁻³ ≥ 0 number_density number_density — view
illuminance scalar JL⁻² kind
≥ 0
per condition
illuminance — luminous_flux / area view
impedance complex scalar L²MI⁻²T⁻³ kind impedance — electric_potential / electric_current view
impedance_of_vacuum complex scalar L²MI⁻²T⁻³ impedance impedance — view
impulse vector LMT⁻¹ momentum momentum force * time view
induced_voltage scalar L²MI⁻¹T⁻³ electric_potential voltage — view
inductance scalar L²MI⁻²T⁻² kind inductance — protoflux / electric_current view
instantaneous_power scalar L²MT⁻³ power power alias to electromagnetism_power view
internal_energy scalar L²MT⁻² energy energy — view
intrinsic_carrier_density scalar L⁻³ ≥ 0 number_density number_density pow<1, 2>(electron_density * hole_density) view
ionization_energy scalar L²MT⁻² ≥ 0 energy energy — view
ionizing_radiation_quality_factor scalar — ≥ 0 dimensionless dimensionless — view
irradiance scalar MT⁻³ kind
≥ 0
irradiance — radiant_flux / area view
isentropic_compressibility scalar LT²M⁻¹ kind isentropic_compressibility compressibility inverse(volume) * (volume / pressure) view
isentropic_expansion_factor scalar — dimensionless dimensionless alias to isentropic_exponent view
isentropic_exponent scalar — dimensionless dimensionless volume / pressure * (pressure / volume) view
isothermal_compressibility scalar LT²M⁻¹ kind isothermal_compressibility compressibility inverse(volume) * (volume / pressure) view
kinematic_viscosity scalar L²T⁻¹ kind kinematic_viscosity — dynamic_viscosity / mass_density view
kinetic_energy scalar L²MT⁻² ≥ 0 energy mechanical_energy mass * pow<2>(speed) view
kinetic_friction_factor scalar — ≥ 0 dimensionless dimensionless kinetic_friction_force / force view
kinetic_friction_force vector LMT⁻² force force — view
latent_heat scalar L²MT⁻² energy heat — view
lattice_plane_spacing scalar L ≥ 0 length distance — view
lattice_vector vector L length displacement — view
leakage_factor scalar — ≥ 0 dimensionless dimensionless pow<2>(coupling_factor) view
length scalar L kind
≥ 0
length — — view
light_speed_in_vacuum scalar LT⁻¹ ≥ 0 speed speed alias to speed_of_light_in_vacuum view
line_digit_rate scalar T⁻¹ kind
≥ 0
modulation_rate — alias to modulation_rate view
linear_absorption_coefficient scalar L⁻¹ ≥ 0 linear_attenuation_coefficient linear_attenuation_coefficient — view
linear_attenuation_coefficient scalar L⁻¹ kind
≥ 0
linear_attenuation_coefficient — inverse(length) view
linear_density scalar ML⁻¹ kind
≥ 0
linear_mass_density — alias to linear_mass_density view
linear_density_of_electric_charge scalar ITL⁻¹ kind linear_density_of_electric_charge — electric_charge / length view
linear_electric_current_density vector IL⁻¹ kind linear_electric_current_density — surface_density_of_electric_charge * velocity view
linear_expansion_coefficient scalar Θ⁻¹ kind linear_expansion_coefficient — inverse(length) * (length / thermodynamic_temperature) view
linear_mass_density scalar ML⁻¹ kind
≥ 0
linear_mass_density — mass / length view
lineic_charge scalar ITL⁻¹ kind linear_density_of_electric_charge — alias to linear_density_of_electric_charge view
lineic_electric_charge scalar ITL⁻¹ kind linear_density_of_electric_charge — alias to linear_density_of_electric_charge view
linked_magnetic_flux scalar L²MI⁻¹T⁻² magnetic_flux magnetic_flux — view
logarithmic_decrement scalar — dimensionless dimensionless damping_coefficient * period_duration view
long_range_order_parameter scalar — dimensionless dimensionless — view
loss_angle scalar — kind loss_angle angular_measure — view
loss_factor scalar — dimensionless dimensionless inverse(quality_factor) view
loss_probability scalar — ≥ 0 dimensionless dimensionless — view
lower_critical_magnetic_flux_density scalar MI⁻¹T⁻² magnetic_flux_density critical_magnetic_flux_density — view
luminal_speed scalar LT⁻¹ ≥ 0 speed speed alias to speed_of_light_in_vacuum view
luminance scalar JL⁻² kind
≥ 0
per condition
luminance — luminous_intensity / area view
luminance_factor scalar — ≥ 0
per condition
dimensionless dimensionless luminance / luminance view
luminous_absorptance scalar — ≥ 0
per condition
dimensionless dimensionless luminous_flux / luminous_flux view
luminous_efficacy scalar JT³L⁻²M⁻¹ kind
≥ 0
per condition
luminous_efficacy — luminous_flux / power view
luminous_efficacy_of_radiation scalar JT³L⁻²M⁻¹ kind
≥ 0
per condition
luminous_efficacy_of_radiation luminous_efficacy luminous_flux / radiant_flux view
luminous_efficacy_of_source scalar JT³L⁻²M⁻¹ kind
≥ 0
per condition
luminous_efficacy_of_source luminous_efficacy — view
luminous_efficiency scalar — ≥ 0
per condition
dimensionless dimensionless luminous_efficacy_of_radiation / luminous_efficacy_of_radiation view
luminous_energy scalar JT kind
≥ 0
per condition
luminous_energy — luminous_flux * time view
luminous_exitance scalar JL⁻² kind
≥ 0
per condition
luminous_exitance — luminous_flux / area view
luminous_exposure scalar JTL⁻² kind
≥ 0
per condition
luminous_exposure — illuminance * time view
luminous_flux scalar J kind
≥ 0
per condition
luminous_flux — luminous_intensity * solid_angular_measure view
luminous_intensity scalar J kind
≥ 0
per condition
luminous_intensity — — view
luminous_reflectance scalar — ≥ 0
per condition
dimensionless dimensionless luminous_flux / luminous_flux view
luminous_transmittance scalar — ≥ 0
per condition
dimensionless dimensionless luminous_flux / luminous_flux view
magnetic_area_moment vector IL² kind magnetic_moment — alias to magnetic_moment view
magnetic_constant scalar LMI⁻²T⁻² kind magnetic_constant — electric_potential * time / (electric_current * length) view
magnetic_dipole_moment vector L³MI⁻¹T⁻² kind magnetic_dipole_moment — magnetic_constant * magnetic_moment view
magnetic_field_strength vector IL⁻¹ magnetization magnetization — view
magnetic_flux scalar L²MI⁻¹T⁻² kind magnetic_flux — magnetic_flux_density * area view
magnetic_flux_density vector MI⁻¹T⁻² kind magnetic_flux_density — mass / (electric_current * pow<2>(time)) view
magnetic_moment vector IL² kind magnetic_moment — electric_current * area view
magnetic_polarization vector MI⁻¹T⁻² magnetic_flux_density magnetic_flux_density magnetic_constant * magnetization view
magnetic_potential scalar I electric_current electric_current — view
magnetic_susceptibility scalar — dimensionless dimensionless magnetization / magnetic_field_strength view
magnetic_tension scalar I electric_current electric_current magnetic_field_strength * position_vector view
magnetic_vector_potential vector LMI⁻¹T⁻² kind magnetic_vector_potential — magnetic_flux_density * length view
magnetization vector IL⁻¹ kind magnetization — magnetic_moment / volume view
magnetizing_field vector IL⁻¹ magnetization magnetization alias to magnetic_field_strength view
magnetomotive_force scalar I electric_current electric_current magnetic_field_strength * position_vector view
mass scalar M kind
≥ 0
mass — — view
mass_absorption_coefficient scalar L²M⁻¹ ≥ 0 mass_attenuation_coefficient mass_attenuation_coefficient linear_absorption_coefficient / mass_density view
mass_attenuation_coefficient scalar L²M⁻¹ kind
≥ 0
mass_attenuation_coefficient — linear_attenuation_coefficient / mass_density view
mass_change_rate scalar MT⁻¹ kind
≥ 0
mass_change_rate — mass / time view
mass_concentration_of_water scalar ML⁻³ kind
≥ 0
mass_concentration_of_water mass_density mass / volume view
mass_concentration_of_water_vapour scalar ML⁻³ kind
≥ 0
mass_concentration_of_water_vapour mass_density mass / volume view
mass_density scalar ML⁻³ kind
≥ 0
mass_density — mass / volume view
mass_flow vector ML⁻²T⁻¹ kind mass_flow — mass_density * velocity view
mass_flow_rate scalar MT⁻¹ kind mass_flow_rate — mass_flow * area view
mass_fraction_of_dry_matter scalar — ≥ 0 dimensionless mass_fraction_of_water — view
mass_fraction_of_water scalar — ≥ 0 dimensionless dimensionless mass_ratio_of_water_to_dry_matter / mass_ratio_of_water_to_dry_matter view
mass_ratio_of_water_to_dry_matter scalar — ≥ 0 dimensionless dimensionless mass / mass view
mass_ratio_of_water_vapour_to_dry_gas scalar — ≥ 0 dimensionless dimensionless mass / mass view
maximum_efficiency scalar — ≥ 0 dimensionless dimensionless thermodynamic_temperature / thermodynamic_temperature view
maximum_luminous_efficacy scalar JT³L⁻²M⁻¹ ≥ 0
per condition
luminous_efficacy_of_radiation luminous_efficacy_of_radiation — view
mean_free_path scalar L ≥ 0 length distance — view
mean_free_path_of_electrons scalar L ≥ 0 length mean_free_path — view
mean_free_path_of_phonons scalar L ≥ 0 length mean_free_path — view
mean_queue_length scalar — ≥ 0 dimensionless dimensionless — view
mechanical_efficiency scalar — ≥ 0 dimensionless dimensionless mechanical_power / mechanical_power view
mechanical_energy scalar L²MT⁻² energy mechanical_work mass * pow<2>(length) / pow<2>(time) view
mechanical_power scalar L²MT⁻³ power power force * velocity view
mechanical_work scalar L²MT⁻² energy energy force * displacement view
modulation_rate scalar T⁻¹ kind
≥ 0
modulation_rate — inverse(duration) view
modulus_of_compression scalar ML⁻¹T⁻² pressure pressure pressure / relative_volume_strain view
modulus_of_elasticity scalar ML⁻¹T⁻² pressure normal_stress normal_stress / relative_linear_strain view
modulus_of_rigidity scalar ML⁻¹T⁻² pressure shear_stress shear_stress / shear_strain view
molar_absorption_coefficient scalar L²N⁻¹ kind
≥ 0
molar_absorption_coefficient — linear_absorption_coefficient * volume / amount_of_substance view
moment_of_force vector L²MT⁻² kind moment_of_force — position_vector * force view
moment_of_inertia tensor L²M kind moment_of_inertia — angular_momentum / angular_velocity view
momentum vector LMT⁻¹ kind momentum — mass * velocity view
mutual_inductance scalar L²MI⁻²T⁻² inductance inductance protoflux / electric_current view
non_active_power scalar L²MT⁻³ complex_power apparent_power pow<1, 2>(pow<2>(apparent_power)) view
normal_stress scalar ML⁻¹T⁻² pressure stress — view
number_density scalar L⁻³ kind
≥ 0
number_density — number_of_entities / volume view
number_of_entities scalar — kind
≥ 0
number_of_entities dimensionless — view
number_of_states scalar — kind
≥ 0
number_of_states number_of_entities — view
number_of_turns_in_a_winding scalar — ≥ 0 dimensionless dimensionless — view
number_of_vibrational_modes scalar — kind
≥ 0
number_of_vibrational_modes number_of_entities — view
particle_position_vector vector L length position_vector — view
path_length scalar L ≥ 0 length length — view
period scalar T ≥ 0 duration duration alias to period_duration view
period_duration scalar T ≥ 0 duration duration — view
period_of_binary_digits scalar T ≥ 0 duration period_duration inverse(binary_digit_rate) view
period_of_data_elements scalar T ≥ 0 duration period_duration inverse(transfer_rate) view
permeability scalar LMI⁻²T⁻² kind permeability — magnetic_flux_density / magnetic_field_strength view
permeability_of_vacuum scalar LMI⁻²T⁻² kind magnetic_constant — alias to magnetic_constant view
permeance scalar L²MI⁻²T⁻² kind permeance — inverse(reluctance) view
permittivity scalar I²T⁴L⁻³M⁻¹ kind permittivity — electric_flux_density / electric_field_strength view
permittivity_of_vacuum scalar I²T⁴L⁻³M⁻¹ kind electric_constant — alias to electric_constant view
phase_angle scalar — kind phase_angle angular_measure — view
phase_coefficient scalar L⁻¹ kind phase_coefficient — phase_angle / path_length view
phase_difference scalar — phase_angle phase_angle — view
phase_speed scalar LT⁻¹ kind phase_speed — angular_frequency / angular_repetency view
phase_speed_of_electromagnetic_waves scalar LT⁻¹ kind phase_speed_of_electromagnetic_waves — angular_frequency / angular_wavenumber view
photon_energy scalar L²MT⁻² ≥ 0 energy energy — view
photon_exitance scalar L⁻²T⁻¹ kind
≥ 0
photon_exitance — photon_flux / area view
photon_exposure scalar L⁻² kind
≥ 0
photon_exposure — photon_number / area view
photon_flux scalar T⁻¹ kind
≥ 0
photon_flux — photon_number / duration view
photon_intensity scalar T⁻¹ kind
≥ 0
photon_intensity — photon_flux / solid_angular_measure view
photon_irradiance scalar L⁻²T⁻¹ kind
≥ 0
photon_irradiance — photon_flux / area view
photon_number scalar — kind
≥ 0
photon_number number_of_entities radiant_energy / photon_energy view
photon_radiance scalar L⁻²T⁻¹ kind
≥ 0
photon_radiance — photon_intensity / area view
position_vector vector L length displacement — view
potential_energy scalar L²MT⁻² energy mechanical_energy — view
power scalar L²MT⁻³ kind power — mass * pow<2>(length) / pow<3>(time) view
power_factor scalar — dimensionless dimensionless active_power / apparent_power view
pressure scalar ML⁻¹T⁻² kind pressure — force / area view
pressure_coefficient scalar ML⁻¹Θ⁻¹T⁻² kind pressure_coefficient — pressure / thermodynamic_temperature view
propagation_coefficient scalar L⁻¹ kind
≥ 0
propagation_coefficient — inverse(length) view
protoflux scalar L²MI⁻¹T⁻² kind protoflux — magnetic_vector_potential * displacement view
quality_factor scalar — dimensionless dimensionless reactance / resistance view
quantizing_distortion_power scalar L²MT⁻³ ≥ 0 power power — view
radial_distance scalar L ≥ 0 length distance — view
radiance scalar MT⁻³ kind
≥ 0
radiance — radiant_intensity / area view
radiance_factor scalar — ≥ 0 dimensionless dimensionless radiance / radiance view
radiant_energy scalar L²MT⁻² ≥ 0 energy energy — view
radiant_energy_density scalar ML⁻¹T⁻² ≥ 0 energy_density energy_density radiant_energy / volume view
radiant_exitance scalar MT⁻³ kind
≥ 0
radiant_exitance — radiant_flux / area view
radiant_exposure scalar MT⁻² kind
≥ 0
radiant_exposure — radiant_energy / area view
radiant_flux scalar L²MT⁻³ ≥ 0 power power radiant_energy / time view
radiant_intensity scalar L²MT⁻³ kind
≥ 0
radiant_intensity — radiant_flux / solid_angular_measure view
radiant_power scalar L²MT⁻³ ≥ 0 power power alias to radiant_flux view
radius scalar L ≥ 0 length width — view
radius_of_curvature scalar L ≥ 0 length radius — view
ratio_of_specific_heat_capacities scalar — ≥ 0 dimensionless dimensionless specific_heat_capacity_at_constant_pressure / specific_heat_capacity_at_constant_volume view
reactance scalar L²MI⁻²T⁻³ impedance impedance — view
reactive_power scalar L²MT⁻³ kind reactive_power — mass * pow<2>(length) / pow<3>(duration) view
reflectance scalar — ≥ 0 dimensionless dimensionless radiant_flux / radiant_flux view
reflectance_factor scalar — ≥ 0 dimensionless dimensionless radiant_flux / radiant_flux view
refractive_index scalar — dimensionless dimensionless speed_of_light_in_vacuum / speed_of_light_in_a_medium view
relative_density scalar — ≥ 0 dimensionless dimensionless alias to relative_mass_density view
relative_humidity scalar — dimensionless dimensionless pressure / pressure view
relative_linear_strain scalar — dimensionless dimensionless length / length view
relative_mass_concentration_of_vapour scalar — ≥ 0 dimensionless dimensionless mass_concentration_of_water_vapour / mass_concentration_of_water_vapour view
relative_mass_density scalar — ≥ 0 dimensionless dimensionless mass_density / mass_density view
relative_mass_ratio_of_vapour scalar — ≥ 0 dimensionless dimensionless mass_ratio_of_water_vapour_to_dry_gas / mass_ratio_of_water_vapour_to_dry_gas view
relative_permeability scalar — dimensionless dimensionless permeability / magnetic_constant view
relative_permittivity scalar — dimensionless dimensionless permittivity / electric_constant view
relative_pressure_coefficient scalar Θ⁻¹ kind relative_pressure_coefficient — inverse(pressure) * (pressure / thermodynamic_temperature) view
relative_volume_strain scalar — dimensionless dimensionless volume / volume view
relaxation_time scalar T ≥ 0 duration time_constant — view
reluctance scalar I²T²L⁻²M⁻¹ kind reluctance — magnetic_tension / magnetic_flux view
repetency scalar L⁻¹ kind
≥ 0
repetency — inverse(wavelength) view
residual_resistivity scalar L³MI⁻²T⁻³ resistivity resistivity — view
resistance scalar L²MI⁻²T⁻³ impedance impedance voltage / electric_current view
resistance_to_alternating_current scalar L²MI⁻²T⁻³ impedance impedance — view
resistivity scalar L³MI⁻²T⁻³ kind resistivity — inverse(conductivity) view
rolling_drag vector LMT⁻² force force alias to rolling_resistance view
rolling_friction_force vector LMT⁻² force force alias to rolling_resistance view
rolling_resistance vector LMT⁻² force force — view
rolling_resistance_factor scalar — dimensionless dimensionless force / force view
rotation scalar — dimensionless dimensionless — view
rotational_displacement scalar — angular_measure angular_measure path_length / radius view
rotational_frequency scalar T⁻¹ kind rotational_frequency — rotation / duration view
second_axial_moment_of_area scalar L⁴ kind
≥ 0
second_axial_moment_of_area — pow<2>(radial_distance) * area view
second_polar_moment_of_area scalar L⁴ kind
≥ 0
second_polar_moment_of_area — pow<2>(radial_distance) * area view
section_modulus scalar L³ kind
≥ 0
section_modulus — second_axial_moment_of_area / radial_distance view
self_inductance scalar L²MI⁻²T⁻² kind inductance — alias to inductance view
shear_modulus scalar ML⁻¹T⁻² pressure shear_stress alias to modulus_of_rigidity view
shear_strain scalar — dimensionless dimensionless displacement / thickness view
shear_stress scalar ML⁻¹T⁻² pressure stress — view
short_range_order_parameter scalar — dimensionless dimensionless — view
signal_energy_per_binary_digit scalar L²MT⁻² ≥ 0 energy energy carrier_power * period_of_binary_digits view
solid_angular_measure scalar — kind
≥ 0
solid_angular_measure dimensionless area / pow<2>(radius) view
source_tension scalar L²MI⁻¹T⁻³ electric_potential voltage alias to source_voltage view
source_voltage scalar L²MI⁻¹T⁻³ electric_potential voltage — view
specific_Gibbs_energy scalar L²T⁻² ≥ 0 specific_energy specific_enthalpy Gibbs_energy / mass view
specific_Gibbs_function scalar L²T⁻² ≥ 0 specific_energy specific_enthalpy alias to specific_Gibbs_energy view
specific_Helmholtz_energy scalar L²T⁻² ≥ 0 specific_energy specific_internal_energy Helmholtz_energy / mass view
specific_Helmholtz_function scalar L²T⁻² ≥ 0 specific_energy specific_internal_energy alias to specific_Helmholtz_energy view
specific_energy scalar L²T⁻² kind
≥ 0
specific_energy — energy / mass view
specific_enthalpy scalar L²T⁻² ≥ 0 specific_energy specific_internal_energy enthalpy / mass view
specific_entropy scalar L²Θ⁻¹T⁻² kind
≥ 0
specific_entropy — entropy / mass view
specific_gas_constant scalar L²Θ⁻¹T⁻² kind
≥ 0
specific_gas_constant — entropy / mass view
specific_heat_capacity scalar L²Θ⁻¹T⁻² kind
≥ 0
specific_heat_capacity — heat_capacity / mass view
specific_heat_capacity_at_constant_pressure scalar L²Θ⁻¹T⁻² ≥ 0 specific_heat_capacity specific_heat_capacity — view
specific_heat_capacity_at_constant_volume scalar L²Θ⁻¹T⁻² ≥ 0 specific_heat_capacity specific_heat_capacity — view
specific_heat_capacity_at_saturated_vapour_pressure scalar L²Θ⁻¹T⁻² ≥ 0 specific_heat_capacity specific_heat_capacity — view
specific_internal_energy scalar L²T⁻² ≥ 0 specific_energy specific_energy internal_energy / mass view
specific_thermodynamic_energy scalar L²T⁻² ≥ 0 specific_energy specific_energy alias to specific_internal_energy view
specific_volume scalar L³M⁻¹ kind
≥ 0
specific_volume — inverse(mass_density) view
spectral_emissivity scalar — ≥ 0 dimensionless emissivity — view
spectral_irradiance scalar ML⁻¹T⁻³ kind
≥ 0
spectral_irradiance — irradiance / wavelength view
spectral_luminous_efficacy scalar JT³L⁻²M⁻¹ ≥ 0
per condition
luminous_efficacy_of_radiation luminous_efficacy_of_radiation — view
spectral_luminous_efficiency scalar — ≥ 0
per condition
dimensionless luminous_efficiency — view
spectral_radiance scalar ML⁻¹T⁻³ kind
≥ 0
spectral_radiance — radiance / wavelength view
spectral_radiant_energy scalar LMT⁻² kind
≥ 0
spectral_radiant_energy — radiant_energy / wavelength view
spectral_radiant_energy_density_in_terms_of_wavelength scalar ML⁻²T⁻² kind
≥ 0
spectral_radiant_energy_density_in_terms_of_wavelength — radiant_energy_density / wavelength view
spectral_radiant_energy_density_in_terms_of_wavenumber scalar MT⁻² kind
≥ 0
spectral_radiant_energy_density_in_terms_of_wavenumber — radiant_energy_density / wavenumber view
spectral_radiant_exitance scalar ML⁻¹T⁻³ kind
≥ 0
spectral_radiant_exitance — radiant_exitance / wavelength view
spectral_radiant_exposure scalar ML⁻¹T⁻² kind
≥ 0
spectral_radiant_exposure — radiant_exposure / wavelength view
spectral_radiant_flux scalar LMT⁻³ kind
≥ 0
spectral_radiant_flux — radiant_flux / wavelength view
spectral_radiant_intensity scalar LMT⁻³ kind
≥ 0
spectral_radiant_intensity — radiant_intensity / wavelength view
spectral_radiant_power scalar LMT⁻³ kind
≥ 0
spectral_radiant_flux — alias to spectral_radiant_flux view
speed scalar LT⁻¹ kind
≥ 0
speed — length / time view
speed_of_light_in_a_medium scalar LT⁻¹ ≥ 0 speed speed — view
speed_of_light_in_vacuum scalar LT⁻¹ ≥ 0 speed speed — view
static_friction vector LMT⁻² force force alias to static_friction_force view
static_friction_coefficient scalar — ≥ 0 dimensionless dimensionless static_friction_force / force view
static_friction_factor scalar — ≥ 0 dimensionless dimensionless alias to static_friction_coefficient view
static_friction_force vector LMT⁻² force force — view
storage_capacity scalar — kind
≥ 0
storage_capacity dimensionless — view
storage_size scalar — kind
≥ 0
storage_capacity dimensionless alias to storage_capacity view
strain tensor — dimensionless dimensionless — view
stress tensor ML⁻¹T⁻² pressure pressure — view
structure_factor complex scalar — atomic_scattering_factor atomic_scattering_factor — view
superconduction_transition_temperature scalar Θ ≥ 0 thermodynamic_temperature critical_thermodynamic_temperature — view
superconductor_energy_gap scalar L²MT⁻² ≥ 0 energy gap_energy — view
surface_coefficient_of_heat_transfer scalar MΘ⁻¹T⁻³ kind
≥ 0
surface_coefficient_of_heat_transfer — density_of_heat_flow_rate / thermodynamic_temperature view
surface_density scalar ML⁻² kind
≥ 0
surface_mass_density — alias to surface_mass_density view
surface_density_of_electric_charge scalar ITL⁻² kind surface_density_of_electric_charge — electric_charge / area view
surface_mass_density scalar ML⁻² kind
≥ 0
surface_mass_density — mass / area view
surface_tension scalar MT⁻² kind surface_tension — force / length view
susceptance scalar I²T³L⁻²M⁻¹ admittance admittance — view
thermal_conductance scalar L²MΘ⁻¹T⁻³ kind
≥ 0
thermal_conductance — inverse(thermal_resistance) view
thermal_conductivity scalar LMΘ⁻¹T⁻³ kind
≥ 0
thermal_conductivity — density_of_heat_flow_rate *(length / thermodynamic_temperature) view
thermal_diffusivity scalar L²T⁻¹ kind
≥ 0
thermal_diffusivity — thermal_conductivity / (mass_density * specific_heat_capacity_at_constant_pressure) view
thermal_insulance scalar ΘT³M⁻¹ kind
≥ 0
thermal_insulance — inverse(coefficient_of_heat_transfer) view
thermal_resistance scalar ΘT³L⁻²M⁻¹ kind
≥ 0
thermal_resistance — thermodynamic_temperature / heat_flow_rate view
thermodynamic_Gruneisen_parameter scalar — dimensionless dimensionless cubic_expansion_coefficient /
(isothermal_compressibility * specific_heat_capacity_at_constant_volume * mass_density) view
thermodynamic_critical_magnetic_flux_density scalar MI⁻¹T⁻² magnetic_flux_density critical_magnetic_flux_density pow<1, 2>(magnetic_constant * Gibbs_energy / volume) view
thermodynamic_efficiency scalar — dimensionless dimensionless work / heat view
thermodynamic_energy scalar L²MT⁻² energy energy alias to internal_energy view
thermodynamic_temperature scalar Θ kind
≥ 0
thermodynamic_temperature — — view
thermoelectric_power scalar L²MI⁻¹Θ⁻¹T⁻³ kind Seebeck_coefficient — alias to Seebeck_coefficient view
thermoelectric_voltage scalar L²MI⁻¹T⁻³ electric_potential voltage — view
thickness scalar L ≥ 0 length width — view
time scalar T kind
≥ 0
duration — alias to duration view
time_constant scalar T ≥ 0 duration duration — view
torque scalar L²MT⁻² moment_of_force moment_of_force — view
total_current scalar I electric_current electric_current — view
total_current_density vector IL⁻² electric_current_density electric_current_density — view
total_magnetic_flux scalar L²MI⁻¹T⁻² magnetic_flux magnetic_flux — view
traffic_carried_intensity scalar A ≥ 0 traffic_intensity traffic_intensity — view
traffic_intensity scalar A kind
≥ 0
traffic_intensity — — view
traffic_load scalar A ≥ 0 traffic_intensity traffic_intensity alias to traffic_carried_intensity view
traffic_offered_intensity scalar A ≥ 0 traffic_intensity traffic_intensity — view
transfer_rate scalar T⁻¹ kind
≥ 0
transfer_rate — storage_capacity / duration view
transmittance scalar — ≥ 0 dimensionless dimensionless radiant_flux / radiant_flux view
upper_critical_magnetic_flux_density scalar MI⁻¹T⁻² magnetic_flux_density critical_magnetic_flux_density — view
velocity vector LT⁻¹ speed speed displacement / duration view
voltage scalar L²MI⁻¹T⁻³ electric_potential electric_potential — view
voltage_phasor complex scalar L²MI⁻¹T⁻³ electric_potential voltage — view
volume scalar L³ kind
≥ 0
volume — pow<3>(length) view
volume_electric_charge scalar ITL⁻³ kind electric_charge_density — alias to electric_charge_density view
volume_flow_rate scalar L³T⁻¹ kind volume_flow_rate — velocity * area view
volumic_charge scalar ITL⁻³ kind electric_charge_density — alias to electric_charge_density view
waiting_probability scalar — ≥ 0 dimensionless dimensionless — view
wave_impedance_in_vacuum complex scalar L²MI⁻²T⁻³ impedance impedance alias to impedance_of_vacuum view
wave_vector vector L⁻¹ angular_repetency angular_repetency — view
wavelength scalar L ≥ 0 length length — view
wavenumber scalar L⁻¹ kind
≥ 0
repetency — alias to repetency view
weight vector LMT⁻² force force mass * acceleration_of_free_fall view
width scalar L ≥ 0 length length — view
work scalar L²MT⁻² energy energy alias to mechanical_work view
work_function scalar L²MT⁻² ≥ 0 energy energy — view