Crate physical_constants [−] [src]
Provides access to the CODATA recommended values for physical constants.
Examples
use physical_constants; let epsilon_0 = physical_constants::ELECTRIC_CONSTANT; let mu_0 = physical_constants::MAG_CONSTANT; println!("speed of massless particles: {} m/s", 1f64/(epsilon_0*mu_0).sqrt()); println!("impedance of free space: {} Ω", (mu_0/epsilon_0).sqrt());
Constants
| ALPHA_PARTICLE_ELECTRON_MASS_RATIO |
alpha particle-electron mass ratio (dimensionless) |
| ALPHA_PARTICLE_MASS |
alpha particle mass (unit: kg) |
| ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT |
alpha particle mass energy equivalent (unit: J) |
| ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_IN_MEV |
alpha particle mass energy equivalent in MeV (unit: MeV) |
| ALPHA_PARTICLE_MASS_IN_U |
alpha particle mass in u (unit: u) |
| ALPHA_PARTICLE_MOLAR_MASS |
alpha particle molar mass (unit: kg mol-1) |
| ALPHA_PARTICLE_PROTON_MASS_RATIO |
alpha particle-proton mass ratio (dimensionless) |
| ANGSTROM_STAR |
Angstrom star (unit: m) |
| ATOMIC_MASS_CONSTANT |
atomic mass constant (unit: kg) |
| ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT |
atomic mass constant energy equivalent (unit: J) |
| ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_IN_MEV |
atomic mass constant energy equivalent in MeV (unit: MeV) |
| ATOMIC_MASS_UNIT_ELECTRON_VOLT_RELATIONSHIP |
atomic mass unit-electron volt relationship (unit: eV) |
| ATOMIC_MASS_UNIT_HARTREE_RELATIONSHIP |
atomic mass unit-hartree relationship (unit: E_h) |
| ATOMIC_MASS_UNIT_HERTZ_RELATIONSHIP |
atomic mass unit-hertz relationship (unit: Hz) |
| ATOMIC_MASS_UNIT_INVERSE_METER_RELATIONSHIP |
atomic mass unit-inverse meter relationship (unit: m-1) |
| ATOMIC_MASS_UNIT_JOULE_RELATIONSHIP |
atomic mass unit-joule relationship (unit: J) |
| ATOMIC_MASS_UNIT_KELVIN_RELATIONSHIP |
atomic mass unit-kelvin relationship (unit: K) |
| ATOMIC_MASS_UNIT_KILOGRAM_RELATIONSHIP |
atomic mass unit-kilogram relationship (unit: kg) |
| ATOMIC_UNIT_OF_1ST_HYPERPOLARIZABILITY |
atomic unit of 1st hyperpolarizability (unit: C3 m3 J-2) |
| ATOMIC_UNIT_OF_2ND_HYPERPOLARIZABILITY |
atomic unit of 2nd hyperpolarizability (unit: C4 m4 J-3) |
| ATOMIC_UNIT_OF_ACTION |
atomic unit of action (unit: J s) |
| ATOMIC_UNIT_OF_CHARGE |
atomic unit of charge (unit: C) |
| ATOMIC_UNIT_OF_CHARGE_DENSITY |
atomic unit of charge density (unit: C m-3) |
| ATOMIC_UNIT_OF_CURRENT |
atomic unit of current (unit: A) |
| ATOMIC_UNIT_OF_ELECTRIC_DIPOLE_MOM |
atomic unit of electric dipole mom. (unit: C m) |
| ATOMIC_UNIT_OF_ELECTRIC_FIELD |
atomic unit of electric field (unit: V m-1) |
| ATOMIC_UNIT_OF_ELECTRIC_FIELD_GRADIENT |
atomic unit of electric field gradient (unit: V m-2) |
| ATOMIC_UNIT_OF_ELECTRIC_POLARIZABILITY |
atomic unit of electric polarizability (unit: C2 m2 J-1) |
| ATOMIC_UNIT_OF_ELECTRIC_POTENTIAL |
atomic unit of electric potential (unit: V) |
| ATOMIC_UNIT_OF_ELECTRIC_QUADRUPOLE_MOM |
atomic unit of electric quadrupole mom. (unit: C m2) |
| ATOMIC_UNIT_OF_ENERGY |
atomic unit of energy (unit: J) |
| ATOMIC_UNIT_OF_FORCE |
atomic unit of force (unit: N) |
| ATOMIC_UNIT_OF_LENGTH |
atomic unit of length (unit: m) |
| ATOMIC_UNIT_OF_MAGNETIZABILITY |
atomic unit of magnetizability (unit: J T-2) |
| ATOMIC_UNIT_OF_MAG_DIPOLE_MOM |
atomic unit of mag. dipole mom. (unit: J T-1) |
| ATOMIC_UNIT_OF_MAG_FLUX_DENSITY |
atomic unit of mag. flux density (unit: T) |
| ATOMIC_UNIT_OF_MASS |
atomic unit of mass (unit: kg) |
| ATOMIC_UNIT_OF_MOMENTUM |
atomic unit of mom.um (unit: kg m s-1) |
| ATOMIC_UNIT_OF_PERMITTIVITY |
atomic unit of permittivity (unit: F m-1) |
| ATOMIC_UNIT_OF_TIME |
atomic unit of time (unit: s) |
| ATOMIC_UNIT_OF_VELOCITY |
atomic unit of velocity (unit: m s-1) |
| AVOGADRO_CONSTANT |
Avogadro constant (unit: mol-1) |
| BOHR_MAGNETON |
Bohr magneton (unit: J T-1) |
| BOHR_MAGNETON_IN_EV_PER_T |
Bohr magneton in eV/T (unit: eV T-1) |
| BOHR_MAGNETON_IN_HZ_PER_T |
Bohr magneton in Hz/T (unit: Hz T-1) |
| BOHR_MAGNETON_IN_INVERSE_METERS_PER_TESLA |
Bohr magneton in inverse meters per tesla (unit: m-1 T-1) |
| BOHR_MAGNETON_IN_K_PER_T |
Bohr magneton in K/T (unit: K T-1) |
| BOHR_RADIUS |
Bohr radius (unit: m) |
| BOLTZMANN_CONSTANT |
Boltzmann constant (unit: J K-1) |
| BOLTZMANN_CONSTANT_IN_EV_PER_K |
Boltzmann constant in eV/K (unit: eV K-1) |
| BOLTZMANN_CONSTANT_IN_HZ_PER_K |
Boltzmann constant in Hz/K (unit: Hz K-1) |
| BOLTZMANN_CONSTANT_IN_INVERSE_METERS_PER_KELVIN |
Boltzmann constant in inverse meters per kelvin (unit: m-1 K-1) |
| CHARACTERISTIC_IMPEDANCE_OF_VACUUM |
characteristic impedance of vacuum (unit: ohm) |
| CLASSICAL_ELECTRON_RADIUS |
classical electron radius (unit: m) |
| COMPTON_WAVELENGTH |
Compton wavelength (unit: m) |
| COMPTON_WAVELENGTH_OVER_2_PI |
Compton wavelength over 2 pi (unit: m) |
| CONDUCTANCE_QUANTUM |
conductance quantum (unit: S) |
| CONVENTIONAL_VALUE_OF_JOSEPHSON_CONSTANT |
conventional value of Josephson constant (unit: Hz V-1) |
| CONVENTIONAL_VALUE_OF_VON_KLITZING_CONSTANT |
conventional value of von Klitzing constant (unit: ohm) |
| CU_X_UNIT |
Cu x unit (unit: m) |
| DEUTERON_ELECTRON_MAG_MOM_RATIO |
deuteron-electron mag. mom. ratio (dimensionless) |
| DEUTERON_ELECTRON_MASS_RATIO |
deuteron-electron mass ratio (dimensionless) |
| DEUTERON_G_FACTOR |
deuteron g factor (dimensionless) |
| DEUTERON_MAG_MOM |
deuteron mag. mom. (unit: J T-1) |
| DEUTERON_MAG_MOM_TO_BOHR_MAGNETON_RATIO |
deuteron mag. mom. to Bohr magneton ratio (dimensionless) |
| DEUTERON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO |
deuteron mag. mom. to nuclear magneton ratio (dimensionless) |
| DEUTERON_MASS |
deuteron mass (unit: kg) |
| DEUTERON_MASS_ENERGY_EQUIVALENT |
deuteron mass energy equivalent (unit: J) |
| DEUTERON_MASS_ENERGY_EQUIVALENT_IN_MEV |
deuteron mass energy equivalent in MeV (unit: MeV) |
| DEUTERON_MASS_IN_U |
deuteron mass in u (unit: u) |
| DEUTERON_MOLAR_MASS |
deuteron molar mass (unit: kg mol-1) |
| DEUTERON_NEUTRON_MAG_MOM_RATIO |
deuteron-neutron mag. mom. ratio (dimensionless) |
| DEUTERON_PROTON_MAG_MOM_RATIO |
deuteron-proton mag. mom. ratio (dimensionless) |
| DEUTERON_PROTON_MASS_RATIO |
deuteron-proton mass ratio (dimensionless) |
| DEUTERON_RMS_CHARGE_RADIUS |
deuteron rms charge radius (unit: m) |
| ELECTRIC_CONSTANT |
electric constant (unit: F m-1) |
| ELECTRON_CHARGE_TO_MASS_QUOTIENT |
electron charge to mass quotient (unit: C kg-1) |
| ELECTRON_DEUTERON_MAG_MOM_RATIO |
electron-deuteron mag. mom. ratio (dimensionless) |
| ELECTRON_DEUTERON_MASS_RATIO |
electron-deuteron mass ratio (dimensionless) |
| ELECTRON_GYROMAG_RATIO |
electron gyromag. ratio (unit: s-1 T-1) |
| ELECTRON_GYROMAG_RATIO_OVER_2_PI |
electron gyromag. ratio over 2 pi (unit: MHz T-1) |
| ELECTRON_G_FACTOR |
electron g factor (dimensionless) |
| ELECTRON_HELION_MASS_RATIO |
electron-helion mass ratio (dimensionless) |
| ELECTRON_MAG_MOM |
electron mag. mom. (unit: J T-1) |
| ELECTRON_MAG_MOM_ANOMALY |
electron mag. mom. anomaly (dimensionless) |
| ELECTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO |
electron mag. mom. to Bohr magneton ratio (dimensionless) |
| ELECTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO |
electron mag. mom. to nuclear magneton ratio (dimensionless) |
| ELECTRON_MASS |
electron mass (unit: kg) |
| ELECTRON_MASS_ENERGY_EQUIVALENT |
electron mass energy equivalent (unit: J) |
| ELECTRON_MASS_ENERGY_EQUIVALENT_IN_MEV |
electron mass energy equivalent in MeV (unit: MeV) |
| ELECTRON_MASS_IN_U |
electron mass in u (unit: u) |
| ELECTRON_MOLAR_MASS |
electron molar mass (unit: kg mol-1) |
| ELECTRON_MUON_MAG_MOM_RATIO |
electron-muon mag. mom. ratio (dimensionless) |
| ELECTRON_MUON_MASS_RATIO |
electron-muon mass ratio (dimensionless) |
| ELECTRON_NEUTRON_MAG_MOM_RATIO |
electron-neutron mag. mom. ratio (dimensionless) |
| ELECTRON_NEUTRON_MASS_RATIO |
electron-neutron mass ratio (dimensionless) |
| ELECTRON_PROTON_MAG_MOM_RATIO |
electron-proton mag. mom. ratio (dimensionless) |
| ELECTRON_PROTON_MASS_RATIO |
electron-proton mass ratio (dimensionless) |
| ELECTRON_TAU_MASS_RATIO |
electron-tau mass ratio (dimensionless) |
| ELECTRON_TO_ALPHA_PARTICLE_MASS_RATIO |
electron to alpha particle mass ratio (dimensionless) |
| ELECTRON_TO_SHIELDED_HELION_MAG_MOM_RATIO |
electron to shielded helion mag. mom. ratio (dimensionless) |
| ELECTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO |
electron to shielded proton mag. mom. ratio (dimensionless) |
| ELECTRON_TRITON_MASS_RATIO |
electron-triton mass ratio (dimensionless) |
| ELECTRON_VOLT |
electron volt (unit: J) |
| ELECTRON_VOLT_ATOMIC_MASS_UNIT_RELATIONSHIP |
electron volt-atomic mass unit relationship (unit: u) |
| ELECTRON_VOLT_HARTREE_RELATIONSHIP |
electron volt-hartree relationship (unit: E_h) |
| ELECTRON_VOLT_HERTZ_RELATIONSHIP |
electron volt-hertz relationship (unit: Hz) |
| ELECTRON_VOLT_INVERSE_METER_RELATIONSHIP |
electron volt-inverse meter relationship (unit: m-1) |
| ELECTRON_VOLT_JOULE_RELATIONSHIP |
electron volt-joule relationship (unit: J) |
| ELECTRON_VOLT_KELVIN_RELATIONSHIP |
electron volt-kelvin relationship (unit: K) |
| ELECTRON_VOLT_KILOGRAM_RELATIONSHIP |
electron volt-kilogram relationship (unit: kg) |
| ELEMENTARY_CHARGE |
elementary charge (unit: C) |
| ELEMENTARY_CHARGE_OVER_H |
elementary charge over h (unit: A J-1) |
| FARADAY_CONSTANT |
Faraday constant (unit: C mol-1) |
| FARADAY_CONSTANT_FOR_CONVENTIONAL_ELECTRIC_CURRENT |
Faraday constant for conventional electric current (unit: C_90 mol-1) |
| FERMI_COUPLING_CONSTANT |
Fermi coupling constant (unit: GeV-2) |
| FINE_STRUCTURE_CONSTANT |
fine-structure constant (dimensionless) |
| FIRST_RADIATION_CONSTANT |
first radiation constant (unit: W m2) |
| FIRST_RADIATION_CONSTANT_FOR_SPECTRAL_RADIANCE |
first radiation constant for spectral radiance (unit: W m2 sr-1) |
| HARTREE_ATOMIC_MASS_UNIT_RELATIONSHIP |
hartree-atomic mass unit relationship (unit: u) |
| HARTREE_ELECTRON_VOLT_RELATIONSHIP |
hartree-electron volt relationship (unit: eV) |
| HARTREE_ENERGY |
Hartree energy (unit: J) |
| HARTREE_ENERGY_IN_EV |
Hartree energy in eV (unit: eV) |
| HARTREE_HERTZ_RELATIONSHIP |
hartree-hertz relationship (unit: Hz) |
| HARTREE_INVERSE_METER_RELATIONSHIP |
hartree-inverse meter relationship (unit: m-1) |
| HARTREE_JOULE_RELATIONSHIP |
hartree-joule relationship (unit: J) |
| HARTREE_KELVIN_RELATIONSHIP |
hartree-kelvin relationship (unit: K) |
| HARTREE_KILOGRAM_RELATIONSHIP |
hartree-kilogram relationship (unit: kg) |
| HELION_ELECTRON_MASS_RATIO |
helion-electron mass ratio (dimensionless) |
| HELION_G_FACTOR |
helion g factor (dimensionless) |
| HELION_MAG_MOM |
helion mag. mom. (unit: J T-1) |
| HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO |
helion mag. mom. to Bohr magneton ratio (dimensionless) |
| HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO |
helion mag. mom. to nuclear magneton ratio (dimensionless) |
| HELION_MASS |
helion mass (unit: kg) |
| HELION_MASS_ENERGY_EQUIVALENT |
helion mass energy equivalent (unit: J) |
| HELION_MASS_ENERGY_EQUIVALENT_IN_MEV |
helion mass energy equivalent in MeV (unit: MeV) |
| HELION_MASS_IN_U |
helion mass in u (unit: u) |
| HELION_MOLAR_MASS |
helion molar mass (unit: kg mol-1) |
| HELION_PROTON_MASS_RATIO |
helion-proton mass ratio (dimensionless) |
| HERTZ_ATOMIC_MASS_UNIT_RELATIONSHIP |
hertz-atomic mass unit relationship (unit: u) |
| HERTZ_ELECTRON_VOLT_RELATIONSHIP |
hertz-electron volt relationship (unit: eV) |
| HERTZ_HARTREE_RELATIONSHIP |
hertz-hartree relationship (unit: E_h) |
| HERTZ_INVERSE_METER_RELATIONSHIP |
hertz-inverse meter relationship (unit: m-1) |
| HERTZ_JOULE_RELATIONSHIP |
hertz-joule relationship (unit: J) |
| HERTZ_KELVIN_RELATIONSHIP |
hertz-kelvin relationship (unit: K) |
| HERTZ_KILOGRAM_RELATIONSHIP |
hertz-kilogram relationship (unit: kg) |
| INVERSE_FINE_STRUCTURE_CONSTANT |
inverse fine-structure constant (dimensionless) |
| INVERSE_METER_ATOMIC_MASS_UNIT_RELATIONSHIP |
inverse meter-atomic mass unit relationship (unit: u) |
| INVERSE_METER_ELECTRON_VOLT_RELATIONSHIP |
inverse meter-electron volt relationship (unit: eV) |
| INVERSE_METER_HARTREE_RELATIONSHIP |
inverse meter-hartree relationship (unit: E_h) |
| INVERSE_METER_HERTZ_RELATIONSHIP |
inverse meter-hertz relationship (unit: Hz) |
| INVERSE_METER_JOULE_RELATIONSHIP |
inverse meter-joule relationship (unit: J) |
| INVERSE_METER_KELVIN_RELATIONSHIP |
inverse meter-kelvin relationship (unit: K) |
| INVERSE_METER_KILOGRAM_RELATIONSHIP |
inverse meter-kilogram relationship (unit: kg) |
| INVERSE_OF_CONDUCTANCE_QUANTUM |
inverse of conductance quantum (unit: ohm) |
| JOSEPHSON_CONSTANT |
Josephson constant (unit: Hz V-1) |
| JOULE_ATOMIC_MASS_UNIT_RELATIONSHIP |
joule-atomic mass unit relationship (unit: u) |
| JOULE_ELECTRON_VOLT_RELATIONSHIP |
joule-electron volt relationship (unit: eV) |
| JOULE_HARTREE_RELATIONSHIP |
joule-hartree relationship (unit: E_h) |
| JOULE_HERTZ_RELATIONSHIP |
joule-hertz relationship (unit: Hz) |
| JOULE_INVERSE_METER_RELATIONSHIP |
joule-inverse meter relationship (unit: m-1) |
| JOULE_KELVIN_RELATIONSHIP |
joule-kelvin relationship (unit: K) |
| JOULE_KILOGRAM_RELATIONSHIP |
joule-kilogram relationship (unit: kg) |
| KELVIN_ATOMIC_MASS_UNIT_RELATIONSHIP |
kelvin-atomic mass unit relationship (unit: u) |
| KELVIN_ELECTRON_VOLT_RELATIONSHIP |
kelvin-electron volt relationship (unit: eV) |
| KELVIN_HARTREE_RELATIONSHIP |
kelvin-hartree relationship (unit: E_h) |
| KELVIN_HERTZ_RELATIONSHIP |
kelvin-hertz relationship (unit: Hz) |
| KELVIN_INVERSE_METER_RELATIONSHIP |
kelvin-inverse meter relationship (unit: m-1) |
| KELVIN_JOULE_RELATIONSHIP |
kelvin-joule relationship (unit: J) |
| KELVIN_KILOGRAM_RELATIONSHIP |
kelvin-kilogram relationship (unit: kg) |
| KILOGRAM_ATOMIC_MASS_UNIT_RELATIONSHIP |
kilogram-atomic mass unit relationship (unit: u) |
| KILOGRAM_ELECTRON_VOLT_RELATIONSHIP |
kilogram-electron volt relationship (unit: eV) |
| KILOGRAM_HARTREE_RELATIONSHIP |
kilogram-hartree relationship (unit: E_h) |
| KILOGRAM_HERTZ_RELATIONSHIP |
kilogram-hertz relationship (unit: Hz) |
| KILOGRAM_INVERSE_METER_RELATIONSHIP |
kilogram-inverse meter relationship (unit: m-1) |
| KILOGRAM_JOULE_RELATIONSHIP |
kilogram-joule relationship (unit: J) |
| KILOGRAM_KELVIN_RELATIONSHIP |
kilogram-kelvin relationship (unit: K) |
| LATTICE_PARAMETER_OF_SILICON |
lattice parameter of silicon (unit: m) |
| LATTICE_SPACING_220_OF_SILICON |
{220} lattice spacing of silicon (unit: m) |
| LOSCHMIDT_CONSTANT_27315_K_100_KPA |
Loschmidt constant (273.15 K, 100 kPa) (unit: m-3) |
| LOSCHMIDT_CONSTANT_27315_K_101325_KPA |
Loschmidt constant (273.15 K, 101.325 kPa) (unit: m-3) |
| MAG_CONSTANT |
mag. constant (unit: N A-2) |
| MAG_FLUX_QUANTUM |
mag. flux quantum (unit: Wb) |
| MOLAR_GAS_CONSTANT |
molar gas constant (unit: J mol-1 K-1) |
| MOLAR_MASS_CONSTANT |
molar mass constant (unit: kg mol-1) |
| MOLAR_MASS_OF_CARBON_12 |
molar mass of carbon-12 (unit: kg mol-1) |
| MOLAR_PLANCK_CONSTANT |
molar Planck constant (unit: J s mol-1) |
| MOLAR_PLANCK_CONSTANT_TIMES_C |
molar Planck constant times c (unit: J m mol-1) |
| MOLAR_VOLUME_OF_IDEAL_GAS_27315_K_100_KPA |
molar volume of ideal gas (273.15 K, 100 kPa) (unit: m3 mol-1) |
| MOLAR_VOLUME_OF_IDEAL_GAS_27315_K_101325_KPA |
molar volume of ideal gas (273.15 K, 101.325 kPa) (unit: m3 mol-1) |
| MOLAR_VOLUME_OF_SILICON |
molar volume of silicon (unit: m3 mol-1) |
| MO_X_UNIT |
Mo x unit (unit: m) |
| MUON_COMPTON_WAVELENGTH |
muon Compton wavelength (unit: m) |
| MUON_COMPTON_WAVELENGTH_OVER_2_PI |
muon Compton wavelength over 2 pi (unit: m) |
| MUON_ELECTRON_MASS_RATIO |
muon-electron mass ratio (dimensionless) |
| MUON_G_FACTOR |
muon g factor (dimensionless) |
| MUON_MAG_MOM |
muon mag. mom. (unit: J T-1) |
| MUON_MAG_MOM_ANOMALY |
muon mag. mom. anomaly (dimensionless) |
| MUON_MAG_MOM_TO_BOHR_MAGNETON_RATIO |
muon mag. mom. to Bohr magneton ratio (dimensionless) |
| MUON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO |
muon mag. mom. to nuclear magneton ratio (dimensionless) |
| MUON_MASS |
muon mass (unit: kg) |
| MUON_MASS_ENERGY_EQUIVALENT |
muon mass energy equivalent (unit: J) |
| MUON_MASS_ENERGY_EQUIVALENT_IN_MEV |
muon mass energy equivalent in MeV (unit: MeV) |
| MUON_MASS_IN_U |
muon mass in u (unit: u) |
| MUON_MOLAR_MASS |
muon molar mass (unit: kg mol-1) |
| MUON_NEUTRON_MASS_RATIO |
muon-neutron mass ratio (dimensionless) |
| MUON_PROTON_MAG_MOM_RATIO |
muon-proton mag. mom. ratio (dimensionless) |
| MUON_PROTON_MASS_RATIO |
muon-proton mass ratio (dimensionless) |
| MUON_TAU_MASS_RATIO |
muon-tau mass ratio (dimensionless) |
| NATURAL_UNIT_OF_ACTION |
natural unit of action (unit: J s) |
| NATURAL_UNIT_OF_ACTION_IN_EV_S |
natural unit of action in eV s (unit: eV s) |
| NATURAL_UNIT_OF_ENERGY |
natural unit of energy (unit: J) |
| NATURAL_UNIT_OF_ENERGY_IN_MEV |
natural unit of energy in MeV (unit: MeV) |
| NATURAL_UNIT_OF_LENGTH |
natural unit of length (unit: m) |
| NATURAL_UNIT_OF_MASS |
natural unit of mass (unit: kg) |
| NATURAL_UNIT_OF_MOMENTUM |
natural unit of mom.um (unit: kg m s-1) |
| NATURAL_UNIT_OF_MOMENTUM_IN_MEV_PER_C |
natural unit of mom.um in MeV/c (unit: MeV/c) |
| NATURAL_UNIT_OF_TIME |
natural unit of time (unit: s) |
| NATURAL_UNIT_OF_VELOCITY |
natural unit of velocity (unit: m s-1) |
| NEUTRON_COMPTON_WAVELENGTH |
neutron Compton wavelength (unit: m) |
| NEUTRON_COMPTON_WAVELENGTH_OVER_2_PI |
neutron Compton wavelength over 2 pi (unit: m) |
| NEUTRON_ELECTRON_MAG_MOM_RATIO |
neutron-electron mag. mom. ratio (dimensionless) |
| NEUTRON_ELECTRON_MASS_RATIO |
neutron-electron mass ratio (dimensionless) |
| NEUTRON_GYROMAG_RATIO |
neutron gyromag. ratio (unit: s-1 T-1) |
| NEUTRON_GYROMAG_RATIO_OVER_2_PI |
neutron gyromag. ratio over 2 pi (unit: MHz T-1) |
| NEUTRON_G_FACTOR |
neutron g factor (dimensionless) |
| NEUTRON_MAG_MOM |
neutron mag. mom. (unit: J T-1) |
| NEUTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO |
neutron mag. mom. to Bohr magneton ratio (dimensionless) |
| NEUTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO |
neutron mag. mom. to nuclear magneton ratio (dimensionless) |
| NEUTRON_MASS |
neutron mass (unit: kg) |
| NEUTRON_MASS_ENERGY_EQUIVALENT |
neutron mass energy equivalent (unit: J) |
| NEUTRON_MASS_ENERGY_EQUIVALENT_IN_MEV |
neutron mass energy equivalent in MeV (unit: MeV) |
| NEUTRON_MASS_IN_U |
neutron mass in u (unit: u) |
| NEUTRON_MOLAR_MASS |
neutron molar mass (unit: kg mol-1) |
| NEUTRON_MUON_MASS_RATIO |
neutron-muon mass ratio (dimensionless) |
| NEUTRON_PROTON_MAG_MOM_RATIO |
neutron-proton mag. mom. ratio (dimensionless) |
| NEUTRON_PROTON_MASS_DIFFERENCE |
neutron-proton mass difference (dimensionless) |
| NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT |
neutron-proton mass difference energy equivalent (dimensionless) |
| NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_IN_MEV |
neutron-proton mass difference energy equivalent in MeV (dimensionless) |
| NEUTRON_PROTON_MASS_DIFFERENCE_IN_U |
neutron-proton mass difference in u (dimensionless) |
| NEUTRON_PROTON_MASS_RATIO |
neutron-proton mass ratio (dimensionless) |
| NEUTRON_TAU_MASS_RATIO |
neutron-tau mass ratio (dimensionless) |
| NEUTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO |
neutron to shielded proton mag. mom. ratio (dimensionless) |
| NEWTONIAN_CONSTANT_OF_GRAVITATION |
Newtonian constant of gravitation (unit: m3 kg-1 s-2) |
| NEWTONIAN_CONSTANT_OF_GRAVITATION_OVER_H_BAR_C |
Newtonian constant of gravitation over h-bar c (unit: (GeV/c2)-2) |
| NUCLEAR_MAGNETON |
nuclear magneton (unit: J T-1) |
| NUCLEAR_MAGNETON_IN_EV_PER_T |
nuclear magneton in eV/T (unit: eV T-1) |
| NUCLEAR_MAGNETON_IN_INVERSE_METERS_PER_TESLA |
nuclear magneton in inverse meters per tesla (unit: m-1 T-1) |
| NUCLEAR_MAGNETON_IN_K_PER_T |
nuclear magneton in K/T (unit: K T-1) |
| NUCLEAR_MAGNETON_IN_MHZ_PER_T |
nuclear magneton in MHz/T (unit: MHz T-1) |
| PLANCK_CONSTANT |
Planck constant (unit: J s) |
| PLANCK_CONSTANT_IN_EV_S |
Planck constant in eV s (unit: eV s) |
| PLANCK_CONSTANT_OVER_2_PI |
Planck constant over 2 pi (unit: J s) |
| PLANCK_CONSTANT_OVER_2_PI_IN_EV_S |
Planck constant over 2 pi in eV s (unit: eV s) |
| PLANCK_CONSTANT_OVER_2_PI_TIMES_C_IN_MEV_FM |
Planck constant over 2 pi times c in MeV fm (unit: MeV fm) |
| PLANCK_LENGTH |
Planck length (unit: m) |
| PLANCK_MASS |
Planck mass (unit: kg) |
| PLANCK_MASS_ENERGY_EQUIVALENT_IN_GEV |
Planck mass energy equivalent in GeV (unit: GeV) |
| PLANCK_TEMPERATURE |
Planck temperature (unit: K) |
| PLANCK_TIME |
Planck time (unit: s) |
| PROTON_CHARGE_TO_MASS_QUOTIENT |
proton charge to mass quotient (unit: C kg-1) |
| PROTON_COMPTON_WAVELENGTH |
proton Compton wavelength (unit: m) |
| PROTON_COMPTON_WAVELENGTH_OVER_2_PI |
proton Compton wavelength over 2 pi (unit: m) |
| PROTON_ELECTRON_MASS_RATIO |
proton-electron mass ratio (dimensionless) |
| PROTON_GYROMAG_RATIO |
proton gyromag. ratio (unit: s-1 T-1) |
| PROTON_GYROMAG_RATIO_OVER_2_PI |
proton gyromag. ratio over 2 pi (unit: MHz T-1) |
| PROTON_G_FACTOR |
proton g factor (dimensionless) |
| PROTON_MAG_MOM |
proton mag. mom. (unit: J T-1) |
| PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO |
proton mag. mom. to Bohr magneton ratio (dimensionless) |
| PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO |
proton mag. mom. to nuclear magneton ratio (dimensionless) |
| PROTON_MAG_SHIELDING_CORRECTION |
proton mag. shielding correction (dimensionless) |
| PROTON_MASS |
proton mass (unit: kg) |
| PROTON_MASS_ENERGY_EQUIVALENT |
proton mass energy equivalent (unit: J) |
| PROTON_MASS_ENERGY_EQUIVALENT_IN_MEV |
proton mass energy equivalent in MeV (unit: MeV) |
| PROTON_MASS_IN_U |
proton mass in u (unit: u) |
| PROTON_MOLAR_MASS |
proton molar mass (unit: kg mol-1) |
| PROTON_MUON_MASS_RATIO |
proton-muon mass ratio (dimensionless) |
| PROTON_NEUTRON_MAG_MOM_RATIO |
proton-neutron mag. mom. ratio (dimensionless) |
| PROTON_NEUTRON_MASS_RATIO |
proton-neutron mass ratio (dimensionless) |
| PROTON_RMS_CHARGE_RADIUS |
proton rms charge radius (unit: m) |
| PROTON_TAU_MASS_RATIO |
proton-tau mass ratio (dimensionless) |
| QUANTUM_OF_CIRCULATION |
quantum of circulation (unit: m2 s-1) |
| QUANTUM_OF_CIRCULATION_TIMES_2 |
quantum of circulation times 2 (unit: m2 s-1) |
| RYDBERG_CONSTANT |
Rydberg constant (unit: m-1) |
| RYDBERG_CONSTANT_TIMES_C_IN_HZ |
Rydberg constant times c in Hz (unit: Hz) |
| RYDBERG_CONSTANT_TIMES_HC_IN_EV |
Rydberg constant times hc in eV (unit: eV) |
| RYDBERG_CONSTANT_TIMES_HC_IN_J |
Rydberg constant times hc in J (unit: J) |
| SACKUR_TETRODE_CONSTANT_1_K_100_KPA |
Sackur-Tetrode constant (1 K, 100 kPa) (dimensionless) |
| SACKUR_TETRODE_CONSTANT_1_K_101325_KPA |
Sackur-Tetrode constant (1 K, 101.325 kPa) (dimensionless) |
| SECOND_RADIATION_CONSTANT |
second radiation constant (unit: m K) |
| SHIELDED_HELION_GYROMAG_RATIO |
shielded helion gyromag. ratio (unit: s-1 T-1) |
| SHIELDED_HELION_GYROMAG_RATIO_OVER_2_PI |
shielded helion gyromag. ratio over 2 pi (unit: MHz T-1) |
| SHIELDED_HELION_MAG_MOM |
shielded helion mag. mom. (unit: J T-1) |
| SHIELDED_HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO |
shielded helion mag. mom. to Bohr magneton ratio (dimensionless) |
| SHIELDED_HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO |
shielded helion mag. mom. to nuclear magneton ratio (dimensionless) |
| SHIELDED_HELION_TO_PROTON_MAG_MOM_RATIO |
shielded helion to proton mag. mom. ratio (dimensionless) |
| SHIELDED_HELION_TO_SHIELDED_PROTON_MAG_MOM_RATIO |
shielded helion to shielded proton mag. mom. ratio (dimensionless) |
| SHIELDED_PROTON_GYROMAG_RATIO |
shielded proton gyromag. ratio (unit: s-1 T-1) |
| SHIELDED_PROTON_GYROMAG_RATIO_OVER_2_PI |
shielded proton gyromag. ratio over 2 pi (unit: MHz T-1) |
| SHIELDED_PROTON_MAG_MOM |
shielded proton mag. mom. (unit: J T-1) |
| SHIELDED_PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO |
shielded proton mag. mom. to Bohr magneton ratio (dimensionless) |
| SHIELDED_PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO |
shielded proton mag. mom. to nuclear magneton ratio (dimensionless) |
| SPEED_OF_LIGHT_IN_VACUUM |
speed of light in vacuum (unit: m s-1) |
| STANDARD_ACCELERATION_OF_GRAVITY |
standard acceleration of gravity (unit: m s-2) |
| STANDARD_ATMOSPHERE |
standard atmosphere (unit: Pa) |
| STANDARD_STATE_PRESSURE |
standard-state pressure (unit: Pa) |
| STEFAN_BOLTZMANN_CONSTANT |
Stefan-Boltzmann constant (unit: W m-2 K-4) |
| TAU_COMPTON_WAVELENGTH |
tau Compton wavelength (unit: m) |
| TAU_COMPTON_WAVELENGTH_OVER_2_PI |
tau Compton wavelength over 2 pi (unit: m) |
| TAU_ELECTRON_MASS_RATIO |
tau-electron mass ratio (dimensionless) |
| TAU_MASS |
tau mass (unit: kg) |
| TAU_MASS_ENERGY_EQUIVALENT |
tau mass energy equivalent (unit: J) |
| TAU_MASS_ENERGY_EQUIVALENT_IN_MEV |
tau mass energy equivalent in MeV (unit: MeV) |
| TAU_MASS_IN_U |
tau mass in u (unit: u) |
| TAU_MOLAR_MASS |
tau molar mass (unit: kg mol-1) |
| TAU_MUON_MASS_RATIO |
tau-muon mass ratio (dimensionless) |
| TAU_NEUTRON_MASS_RATIO |
tau-neutron mass ratio (dimensionless) |
| TAU_PROTON_MASS_RATIO |
tau-proton mass ratio (dimensionless) |
| THOMSON_CROSS_SECTION |
Thomson cross section (unit: m2) |
| TRITON_ELECTRON_MASS_RATIO |
triton-electron mass ratio (dimensionless) |
| TRITON_G_FACTOR |
triton g factor (dimensionless) |
| TRITON_MAG_MOM |
triton mag. mom. (unit: J T-1) |
| TRITON_MAG_MOM_TO_BOHR_MAGNETON_RATIO |
triton mag. mom. to Bohr magneton ratio (dimensionless) |
| TRITON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO |
triton mag. mom. to nuclear magneton ratio (dimensionless) |
| TRITON_MASS |
triton mass (unit: kg) |
| TRITON_MASS_ENERGY_EQUIVALENT |
triton mass energy equivalent (unit: J) |
| TRITON_MASS_ENERGY_EQUIVALENT_IN_MEV |
triton mass energy equivalent in MeV (unit: MeV) |
| TRITON_MASS_IN_U |
triton mass in u (unit: u) |
| TRITON_MOLAR_MASS |
triton molar mass (unit: kg mol-1) |
| TRITON_PROTON_MASS_RATIO |
triton-proton mass ratio (dimensionless) |
| UNIFIED_ATOMIC_MASS_UNIT |
unified atomic mass unit (unit: kg) |
| VON_KLITZING_CONSTANT |
von Klitzing constant (unit: ohm) |
| WEAK_MIXING_ANGLE |
weak mixing angle (dimensionless) |
| WIEN_FREQUENCY_DISPLACEMENT_LAW_CONSTANT |
Wien frequency displacement law constant (unit: Hz K-1) |
| WIEN_WAVELENGTH_DISPLACEMENT_LAW_CONSTANT |
Wien wavelength displacement law constant (unit: m K) |