Expand description
Provides access to the CODATA recommended 2018 values for physical constants.
§Examples
use physical_constants;
let epsilon_0 = physical_constants::VACUUM_ELECTRIC_PERMITTIVITY;
let mu_0 = physical_constants::VACUUM_MAG_PERMEABILITY;
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)
- ALPHA_
PARTICLE_ RELATIVE_ ATOMIC_ MASS - alpha particle relative atomic mass (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 momentum (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_ METER_ PER_ TESLA - Bohr magneton in inverse meter 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_ METER_ PER_ KELVIN - Boltzmann constant in inverse meter 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)
- CONDUCTANCE_
QUANTUM - conductance quantum (unit: S)
- CONVENTIONAL_
VALUE_ OF_ AMPERE_ 90 - conventional value of ampere-90 (unit: A)
- CONVENTIONAL_
VALUE_ OF_ COULOMB_ 90 - conventional value of coulomb-90 (unit: C)
- CONVENTIONAL_
VALUE_ OF_ FARAD_ 90 - conventional value of farad-90 (unit: F)
- CONVENTIONAL_
VALUE_ OF_ HENRY_ 90 - conventional value of henry-90 (unit: H)
- CONVENTIONAL_
VALUE_ OF_ JOSEPHSON_ CONSTANT - conventional value of Josephson constant (unit: Hz⋅V-1)
- CONVENTIONAL_
VALUE_ OF_ OHM_ 90 - conventional value of ohm-90 (unit: ohm)
- CONVENTIONAL_
VALUE_ OF_ VOLT_ 90 - conventional value of volt-90 (unit: V)
- CONVENTIONAL_
VALUE_ OF_ VON_ KLITZING_ CONSTANT - conventional value of von Klitzing constant (unit: ohm)
- CONVENTIONAL_
VALUE_ OF_ WATT_ 90 - conventional value of watt-90 (unit: W)
- COPPER_
X_ UNIT - Copper 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_
RELATIVE_ ATOMIC_ MASS - deuteron relative atomic mass (dimensionless)
- DEUTERON_
RMS_ CHARGE_ RADIUS - deuteron rms charge radius (unit: m)
- 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_ IN_ MHZ_ PER_ T - electron gyromag. ratio in MHz/T (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_
RELATIVE_ ATOMIC_ MASS - electron relative atomic mass (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_ BAR - elementary charge over h-bar (unit: A⋅J-1)
- FARADAY_
CONSTANT - Faraday constant (unit: C⋅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)
- HELION_
RELATIVE_ ATOMIC_ MASS - helion relative atomic mass (dimensionless)
- HELION_
SHIELDING_ SHIFT - helion shielding shift (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)
- HYPERFINE_
TRANSITION_ FREQUENCY_ OF_ CS_ 133 - hyperfine transition frequency of Cs-133 (unit: Hz)
- 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_ OF_ IDEAL_ SI_ 220 - lattice spacing of ideal Si (220) (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)
- LUMINOUS_
EFFICACY - luminous efficacy (unit: lm⋅W-1)
- 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⋅Hz-1⋅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)
- MOLYBDENUM_
X_ UNIT - Molybdenum x unit (unit: m)
- MUON_
COMPTON_ WAVELENGTH - muon Compton wavelength (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 momentum (unit: kg⋅m⋅s-1)
- NATURAL_
UNIT_ OF_ MOMENTUM_ IN_ MEV_ PER_ C - natural unit of momentum 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_
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_ IN_ MHZ_ PER_ T - neutron gyromag. ratio in MHz/T (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 (unit: kg)
- NEUTRON_
PROTON_ MASS_ DIFFERENCE_ ENERGY_ EQUIVALENT - neutron-proton mass difference energy equivalent (unit: J)
- NEUTRON_
PROTON_ MASS_ DIFFERENCE_ ENERGY_ EQUIVALENT_ IN_ MEV - neutron-proton mass difference energy equivalent in MeV (unit: MeV)
- NEUTRON_
PROTON_ MASS_ DIFFERENCE_ IN_ U - neutron-proton mass difference in u (unit: u)
- NEUTRON_
PROTON_ MASS_ RATIO - neutron-proton mass ratio (dimensionless)
- NEUTRON_
RELATIVE_ ATOMIC_ MASS - neutron relative atomic mass (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_ METER_ PER_ TESLA - nuclear magneton in inverse meter 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⋅Hz-1)
- PLANCK_
CONSTANT_ IN_ EV_ PER_ HZ - Planck constant in eV/Hz (unit: eV⋅Hz-1)
- 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_
ELECTRON_ MASS_ RATIO - proton-electron mass ratio (dimensionless)
- PROTON_
GYROMAG_ RATIO - proton gyromag. ratio (unit: s-1⋅T-1)
- PROTON_
GYROMAG_ RATIO_ IN_ MHZ_ PER_ T - proton gyromag. ratio in MHz/T (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_
RELATIVE_ ATOMIC_ MASS - proton relative atomic mass (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)
- REDUCED_
COMPTON_ WAVELENGTH - reduced Compton wavelength (unit: m)
- REDUCED_
MUON_ COMPTON_ WAVELENGTH - reduced muon Compton wavelength (unit: m)
- REDUCED_
NEUTRON_ COMPTON_ WAVELENGTH - reduced neutron Compton wavelength (unit: m)
- REDUCED_
PLANCK_ CONSTANT - reduced Planck constant (unit: J⋅s)
- REDUCED_
PLANCK_ CONSTANT_ IN_ EV_ S - reduced Planck constant in eV s (unit: eV⋅s)
- REDUCED_
PLANCK_ CONSTANT_ TIMES_ C_ IN_ MEV_ FM - reduced Planck constant times c in MeV fm (unit: MeV⋅fm)
- REDUCED_
PROTON_ COMPTON_ WAVELENGTH - reduced proton Compton wavelength (unit: m)
- REDUCED_
TAU_ COMPTON_ WAVELENGTH - reduced tau Compton wavelength (unit: m)
- 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_ IN_ MHZ_ PER_ T - shielded helion gyromag. ratio in MHz/T (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_ IN_ MHZ_ PER_ T - shielded proton gyromag. ratio in MHz/T (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)
- SHIELDING_
DIFFERENCE_ OF_ D_ AND_ P_ IN_ HD - shielding difference of d and p in HD (dimensionless)
- SHIELDING_
DIFFERENCE_ OF_ T_ AND_ P_ IN_ HT - shielding difference of t and p in HT (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_
ELECTRON_ MASS_ RATIO - tau-electron mass ratio (dimensionless)
- TAU_
ENERGY_ EQUIVALENT - tau energy equivalent (unit: MeV)
- TAU_
MASS - tau mass (unit: kg)
- TAU_
MASS_ ENERGY_ EQUIVALENT - tau mass energy equivalent (unit: J)
- 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)
- TRITON_
RELATIVE_ ATOMIC_ MASS - triton relative atomic mass (dimensionless)
- TRITON_
TO_ PROTON_ MAG_ MOM_ RATIO - triton to proton mag. mom. ratio (dimensionless)
- UNIFIED_
ATOMIC_ MASS_ UNIT - unified atomic mass unit (unit: kg)
- VACUUM_
ELECTRIC_ PERMITTIVITY - vacuum electric permittivity (unit: F⋅m-1)
- VACUUM_
MAG_ PERMEABILITY - vacuum mag. permeability (unit: N⋅A-2)
- 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)
- W_
TO_ Z_ MASS_ RATIO - W to Z mass ratio (dimensionless)