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Source pub use astro::ASTRO_CONSTANTS;
- aliases
- Common aliases for physical and astronomical constants.
- astro
- Astronomical constants from IAU 2015 resolution.
- units
- Unit conversion factors.
- Constant
- A physical constant value with its uncertainty and unit.
- ALPHA_PARTICLE_ELECTRON_MASS_RATIO
- alpha particle-electron mass ratio
Uncertainty: 0.00000017
- ALPHA_PARTICLE_MASS
- ALPHA_PARTICLE_MASS_CGS
- alpha particle mass (CGS)
- ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT
- ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_CGS
- alpha particle mass energy equivalent (CGS)
- ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_IN_MEV
- alpha particle mass energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.0000012 - ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_SI
- alpha particle mass energy equivalent
Unit: J
Uncertainty: 0.0000000019e-10
- ALPHA_PARTICLE_MASS_IN_U
- alpha particle mass in u
Unit: u
Uncertainty: 0.000000000062
- ALPHA_PARTICLE_MASS_SI
- alpha particle mass
Unit: kg
Uncertainty: 0.0000000021e-27
- ALPHA_PARTICLE_MOLAR_MASS
- ALPHA_PARTICLE_MOLAR_MASS_CGS
- alpha particle molar mass (CGS)
- ALPHA_PARTICLE_MOLAR_MASS_SI
- alpha particle molar mass
Unit: kg mol^-1
Uncertainty: 0.0000000012e-3
- ALPHA_PARTICLE_PROTON_MASS_RATIO
- alpha particle-proton mass ratio
Uncertainty: 0.000000000070
- ALPHA_PARTICLE_RELATIVE_ATOMIC_MASS
- alpha particle relative atomic mass
Uncertainty: 0.000000000062
- ALPHA_PARTICLE_RMS_CHARGE_RADIUS
- ALPHA_PARTICLE_RMS_CHARGE_RADIUS_CGS
- alpha particle rms charge radius (CGS)
- ALPHA_PARTICLE_RMS_CHARGE_RADIUS_SI
- alpha particle rms charge radius
Unit: m
Uncertainty: 0.0021e-15
- ANGSTROM_STAR
- ANGSTROM_STAR_CGS
- Angstrom star (CGS)
- ANGSTROM_STAR_SI
- Angstrom star
Unit: m
Uncertainty: 0.00000090e-10
- ATOMIC_MASS_CONSTANT
- ATOMIC_MASS_CONSTANT_CGS
- atomic mass constant (CGS)
- ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT
- ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_CGS
- atomic mass constant energy equivalent (CGS)
- ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_IN_MEV
- atomic mass constant energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.00000029 - ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_SI
- atomic mass constant energy equivalent
Unit: J
Uncertainty: 0.00000000046e-10
- ATOMIC_MASS_CONSTANT_SI
- atomic mass constant
Unit: kg
Uncertainty: 0.00000000052e-27
- ATOMIC_MASS_UNIT_ELECTRON_VOLT_RELATIONSHIP
- atomic mass unit-electron volt relationship
Unit: eV
Uncertainty: 0.0000000029e8
- ATOMIC_MASS_UNIT_HARTREE_RELATIONSHIP
- atomic mass unit-hartree relationship
Unit:
E_h
Uncertainty: 0.0000000011e7 - ATOMIC_MASS_UNIT_HERTZ_RELATIONSHIP
- atomic mass unit-hertz relationship
Unit: Hz
Uncertainty: 0.00000000070e23
- ATOMIC_MASS_UNIT_INVERSE_METER_RELATIONSHIP
- ATOMIC_MASS_UNIT_INVERSE_METER_RELATIONSHIP_CGS
- atomic mass unit-inverse meter relationship (CGS)
- ATOMIC_MASS_UNIT_INVERSE_METER_RELATIONSHIP_SI
- atomic mass unit-inverse meter relationship
Unit: m^-1
Uncertainty: 0.0000000023e14
- ATOMIC_MASS_UNIT_JOULE_RELATIONSHIP
- ATOMIC_MASS_UNIT_JOULE_RELATIONSHIP_CGS
- atomic mass unit-joule relationship (CGS)
- ATOMIC_MASS_UNIT_JOULE_RELATIONSHIP_SI
- atomic mass unit-joule relationship
Unit: J
Uncertainty: 0.00000000046e-10
- ATOMIC_MASS_UNIT_KELVIN_RELATIONSHIP
- atomic mass unit-kelvin relationship
Unit: K
Uncertainty: 0.00000000034e13
- ATOMIC_MASS_UNIT_KILOGRAM_RELATIONSHIP
- ATOMIC_MASS_UNIT_KILOGRAM_RELATIONSHIP_CGS
- atomic mass unit-kilogram relationship (CGS)
- ATOMIC_MASS_UNIT_KILOGRAM_RELATIONSHIP_SI
- atomic mass unit-kilogram relationship
Unit: kg
Uncertainty: 0.00000000052e-27
- ATOMIC_UNIT_OF_1ST_HYPERPOLARIZABILITY
- ATOMIC_UNIT_OF_1ST_HYPERPOLARIZABILITY_CGS
- atomic unit of 1st hyperpolarizability (CGS)
- ATOMIC_UNIT_OF_1ST_HYPERPOLARIZABILITY_SI
- atomic unit of 1st hyperpolarizability
Unit: C^3 m^3 J^-2
Uncertainty: 0.0000000015e-53
- ATOMIC_UNIT_OF_2ND_HYPERPOLARIZABILITY
- ATOMIC_UNIT_OF_2ND_HYPERPOLARIZABILITY_CGS
- atomic unit of 2nd hyperpolarizability (CGS)
- ATOMIC_UNIT_OF_2ND_HYPERPOLARIZABILITY_SI
- atomic unit of 2nd hyperpolarizability
Unit: C^4 m^4 J^-3
Uncertainty: 0.0000000039e-65
- ATOMIC_UNIT_OF_ACTION
- ATOMIC_UNIT_OF_ACTION_CGS
- atomic unit of action (CGS)
- ATOMIC_UNIT_OF_ACTION_SI
- atomic unit of action
Unit: J s
Uncertainty: (exact)
- ATOMIC_UNIT_OF_CHARGE
- atomic unit of charge
Unit: C
Uncertainty: (exact)
- ATOMIC_UNIT_OF_CHARGE_DENSITY
- ATOMIC_UNIT_OF_CHARGE_DENSITY_CGS
- atomic unit of charge density (CGS)
- ATOMIC_UNIT_OF_CHARGE_DENSITY_SI
- atomic unit of charge density
Unit: C m^-3
Uncertainty: 0.00000000051e12
- ATOMIC_UNIT_OF_CURRENT
- atomic unit of current
Unit: A
Uncertainty: 0.0000000000072e-3
- ATOMIC_UNIT_OF_ELECTRIC_DIPOLE_MOM
- ATOMIC_UNIT_OF_ELECTRIC_DIPOLE_MOM_CGS
- atomic unit of electric dipole mom. (CGS)
- ATOMIC_UNIT_OF_ELECTRIC_DIPOLE_MOM_SI
- atomic unit of electric dipole mom.
Unit: C m
Uncertainty: 0.0000000013e-30
- ATOMIC_UNIT_OF_ELECTRIC_FIELD
- ATOMIC_UNIT_OF_ELECTRIC_FIELD_CGS
- atomic unit of electric field (CGS)
- ATOMIC_UNIT_OF_ELECTRIC_FIELD_GRADIENT
- ATOMIC_UNIT_OF_ELECTRIC_FIELD_GRADIENT_CGS
- atomic unit of electric field gradient (CGS)
- ATOMIC_UNIT_OF_ELECTRIC_FIELD_GRADIENT_SI
- atomic unit of electric field gradient
Unit: V m^-2
Uncertainty: 0.0000000030e21
- ATOMIC_UNIT_OF_ELECTRIC_FIELD_SI
- atomic unit of electric field
Unit: V m^-1
Uncertainty: 0.00000000080e11
- ATOMIC_UNIT_OF_ELECTRIC_POLARIZABILITY
- ATOMIC_UNIT_OF_ELECTRIC_POLARIZABILITY_CGS
- atomic unit of electric polarizability (CGS)
- ATOMIC_UNIT_OF_ELECTRIC_POLARIZABILITY_SI
- atomic unit of electric polarizability
Unit: C^2 m^2 J^-1
Uncertainty: 0.00000000051e-41
- ATOMIC_UNIT_OF_ELECTRIC_POTENTIAL
- atomic unit of electric potential
Unit: V
Uncertainty: 0.000000000030
- ATOMIC_UNIT_OF_ELECTRIC_QUADRUPOLE_MOM
- ATOMIC_UNIT_OF_ELECTRIC_QUADRUPOLE_MOM_CGS
- atomic unit of electric quadrupole mom. (CGS)
- ATOMIC_UNIT_OF_ELECTRIC_QUADRUPOLE_MOM_SI
- atomic unit of electric quadrupole mom.
Unit: C m^2
Uncertainty: 0.0000000014e-40
- ATOMIC_UNIT_OF_ENERGY
- ATOMIC_UNIT_OF_ENERGY_CGS
- atomic unit of energy (CGS)
- ATOMIC_UNIT_OF_ENERGY_SI
- atomic unit of energy
Unit: J
Uncertainty: 0.0000000000048e-18
- ATOMIC_UNIT_OF_FORCE
- ATOMIC_UNIT_OF_FORCE_CGS
- atomic unit of force (CGS)
- ATOMIC_UNIT_OF_FORCE_SI
- atomic unit of force
Unit: N
Uncertainty: 0.0000000013e-8
- ATOMIC_UNIT_OF_LENGTH
- ATOMIC_UNIT_OF_LENGTH_CGS
- atomic unit of length (CGS)
- ATOMIC_UNIT_OF_LENGTH_SI
- atomic unit of length
Unit: m
Uncertainty: 0.00000000082e-11
- ATOMIC_UNIT_OF_MAGNETIZABILITY
- ATOMIC_UNIT_OF_MAGNETIZABILITY_CGS
- atomic unit of magnetizability (CGS)
- ATOMIC_UNIT_OF_MAGNETIZABILITY_SI
- atomic unit of magnetizability
Unit: J T^-2
Uncertainty: 0.0000000049e-29
- ATOMIC_UNIT_OF_MAG_DIPOLE_MOM
- ATOMIC_UNIT_OF_MAG_DIPOLE_MOM_CGS
- atomic unit of mag. dipole mom. (CGS)
- ATOMIC_UNIT_OF_MAG_DIPOLE_MOM_SI
- atomic unit of mag. dipole mom.
Unit: J T^-1
Uncertainty: 0.00000000058e-23
- ATOMIC_UNIT_OF_MAG_FLUX_DENSITY
- ATOMIC_UNIT_OF_MAG_FLUX_DENSITY_CGS
- atomic unit of mag. flux density (CGS)
- ATOMIC_UNIT_OF_MAG_FLUX_DENSITY_SI
- atomic unit of mag. flux density
Unit: T
Uncertainty: 0.00000000073e5
- ATOMIC_UNIT_OF_MASS
- ATOMIC_UNIT_OF_MASS_CGS
- atomic unit of mass (CGS)
- ATOMIC_UNIT_OF_MASS_SI
- atomic unit of mass
Unit: kg
Uncertainty: 0.0000000028e-31
- ATOMIC_UNIT_OF_MOMENTUM
- ATOMIC_UNIT_OF_MOMENTUM_CGS
- atomic unit of momentum (CGS)
- ATOMIC_UNIT_OF_MOMENTUM_SI
- atomic unit of momentum
Unit: kg m s^-1
Uncertainty: 0.00000000031e-24
- ATOMIC_UNIT_OF_PERMITTIVITY
- ATOMIC_UNIT_OF_PERMITTIVITY_CGS
- atomic unit of permittivity (CGS)
- ATOMIC_UNIT_OF_PERMITTIVITY_SI
- atomic unit of permittivity
Unit: F m^-1
Uncertainty: 0.00000000017e-10
- ATOMIC_UNIT_OF_TIME
- atomic unit of time
Unit: s
Uncertainty: 0.0000000000026e-17
- ATOMIC_UNIT_OF_VELOCITY
- ATOMIC_UNIT_OF_VELOCITY_CGS
- atomic unit of velocity (CGS)
- ATOMIC_UNIT_OF_VELOCITY_SI
- atomic unit of velocity
Unit: m s^-1
Uncertainty: 0.00000000034e6
- AVOGADRO_CONSTANT
- Avogadro constant
Unit: mol^-1
Uncertainty: (exact)
- BOHR_MAGNETON
- BOHR_MAGNETON_CGS
- Bohr magneton (CGS)
- BOHR_MAGNETON_IN_EV_OVER_T
- BOHR_MAGNETON_IN_EV_OVER_T_CGS
- Bohr magneton in eV/T (CGS)
- BOHR_MAGNETON_IN_EV_OVER_T_SI
- Bohr magneton in eV/T
Unit: eV T^-1
Uncertainty: 0.0000000018e-5
- BOHR_MAGNETON_IN_HZ_OVER_T
- BOHR_MAGNETON_IN_HZ_OVER_T_CGS
- Bohr magneton in Hz/T (CGS)
- BOHR_MAGNETON_IN_HZ_OVER_T_SI
- Bohr magneton in Hz/T
Unit: Hz T^-1
Uncertainty: 0.00000000044e10
- BOHR_MAGNETON_IN_INVERSE_METER_PER_TESLA
- BOHR_MAGNETON_IN_INVERSE_METER_PER_TESLA_CGS
- Bohr magneton in inverse meter per tesla (CGS)
- BOHR_MAGNETON_IN_INVERSE_METER_PER_TESLA_SI
- Bohr magneton in inverse meter per tesla
Unit: m^-1 T^-1
Uncertainty: 0.000000015
- BOHR_MAGNETON_IN_K_OVER_T
- BOHR_MAGNETON_IN_K_OVER_T_CGS
- Bohr magneton in K/T (CGS)
- BOHR_MAGNETON_IN_K_OVER_T_SI
- Bohr magneton in K/T
Unit: K T^-1
Uncertainty: 0.00000000021
- BOHR_MAGNETON_SI
- Bohr magneton
Unit: J T^-1
Uncertainty: 0.0000000029e-24
- BOHR_RADIUS
- BOHR_RADIUS_CGS
- Bohr radius (CGS)
- BOHR_RADIUS_SI
- Bohr radius
Unit: m
Uncertainty: 0.00000000082e-11
- BOLTZMANN_CONSTANT
- BOLTZMANN_CONSTANT_CGS
- Boltzmann constant (CGS)
- BOLTZMANN_CONSTANT_IN_EV_OVER_K
- Boltzmann constant in eV/K
Unit: eV K^-1
Uncertainty: (exact)
- BOLTZMANN_CONSTANT_IN_HZ_OVER_K
- Boltzmann constant in Hz/K
Unit: Hz K^-1
Uncertainty: (exact)
- BOLTZMANN_CONSTANT_IN_INVERSE_METER_PER_KELVIN
- BOLTZMANN_CONSTANT_IN_INVERSE_METER_PER_KELVIN_CGS
- Boltzmann constant in inverse meter per kelvin (CGS)
- BOLTZMANN_CONSTANT_IN_INVERSE_METER_PER_KELVIN_SI
- Boltzmann constant in inverse meter per kelvin
Unit: m^-1 K^-1
Uncertainty: (exact)
- BOLTZMANN_CONSTANT_SI
- Boltzmann constant
Unit: J K^-1
Uncertainty: (exact)
- CHARACTERISTIC_IMPEDANCE_OF_VACUUM
- characteristic impedance of vacuum
Unit: ohm
Uncertainty: 0.000000059
- CLASSICAL_ELECTRON_RADIUS
- CLASSICAL_ELECTRON_RADIUS_CGS
- classical electron radius (CGS)
- CLASSICAL_ELECTRON_RADIUS_SI
- classical electron radius
Unit: m
Uncertainty: 0.0000000013e-15
- COMPTON_WAVELENGTH
- COMPTON_WAVELENGTH_CGS
- Compton wavelength (CGS)
- COMPTON_WAVELENGTH_SI
- Compton wavelength
Unit: m
Uncertainty: 0.00000000076e-12
- CONDUCTANCE_QUANTUM
- conductance quantum
Unit: S
Uncertainty: (exact)
- CONSTANTS
- Detailed constant information including value, uncertainty, and unit.
- CONVENTIONAL_VALUE_OF_AMPERE_90
- conventional value of ampere-90
Unit: A
Uncertainty: (exact)
- CONVENTIONAL_VALUE_OF_COULOMB_90
- conventional value of coulomb-90
Unit: C
Uncertainty: (exact)
- CONVENTIONAL_VALUE_OF_FARAD_90
- conventional value of farad-90
Unit: F
Uncertainty: (exact)
- CONVENTIONAL_VALUE_OF_HENRY_90
- conventional value of henry-90
Unit: H
Uncertainty: (exact)
- CONVENTIONAL_VALUE_OF_JOSEPHSON_CONSTANT
- conventional value of Josephson constant
Unit: Hz V^-1
Uncertainty: (exact)
- CONVENTIONAL_VALUE_OF_OHM_90
- conventional value of ohm-90
Unit: ohm
Uncertainty: (exact)
- CONVENTIONAL_VALUE_OF_VOLT_90
- conventional value of volt-90
Unit: V
Uncertainty: (exact)
- CONVENTIONAL_VALUE_OF_VON_KLITZING_CONSTANT
- conventional value of von Klitzing constant
Unit: ohm
Uncertainty: (exact)
- CONVENTIONAL_VALUE_OF_WATT_90
- CONVENTIONAL_VALUE_OF_WATT_90_CGS
- conventional value of watt-90 (CGS)
- CONVENTIONAL_VALUE_OF_WATT_90_SI
- conventional value of watt-90
Unit: W
Uncertainty: (exact)
- COPPER_X_UNIT
- COPPER_X_UNIT_CGS
- Copper x unit (CGS)
- COPPER_X_UNIT_SI
- Copper x unit
Unit: m
Uncertainty: 0.00000028e-13
- DEUTERON_ELECTRON_MAG_MOM_RATIO
- deuteron-electron mag. mom. ratio
Uncertainty: 0.000000012e-4
- DEUTERON_ELECTRON_MASS_RATIO
- deuteron-electron mass ratio
Uncertainty: 0.000000063
- DEUTERON_G_FACTOR
- deuteron g factor
Uncertainty: 0.0000000022
- DEUTERON_MAG_MOM
- DEUTERON_MAG_MOM_CGS
- deuteron mag. mom. (CGS)
- DEUTERON_MAG_MOM_SI
- deuteron mag. mom.
Unit: J T^-1
Uncertainty: 0.000000011e-27
- DEUTERON_MAG_MOM_TO_BOHR_MAGNETON_RATIO
- deuteron mag. mom. to Bohr magneton ratio
Uncertainty: 0.000000012e-4
- DEUTERON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO
- deuteron mag. mom. to nuclear magneton ratio
Uncertainty: 0.0000000022
- DEUTERON_MASS
- DEUTERON_MASS_CGS
- deuteron mass (CGS)
- DEUTERON_MASS_ENERGY_EQUIVALENT
- DEUTERON_MASS_ENERGY_EQUIVALENT_CGS
- deuteron mass energy equivalent (CGS)
- DEUTERON_MASS_ENERGY_EQUIVALENT_IN_MEV
- deuteron mass energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.00000058 - DEUTERON_MASS_ENERGY_EQUIVALENT_SI
- deuteron mass energy equivalent
Unit: J
Uncertainty: 0.00000000094e-10
- DEUTERON_MASS_IN_U
- deuteron mass in u
Unit: u
Uncertainty: 0.000000000015
- DEUTERON_MASS_SI
- deuteron mass
Unit: kg
Uncertainty: 0.0000000010e-27
- DEUTERON_MOLAR_MASS
- DEUTERON_MOLAR_MASS_CGS
- deuteron molar mass (CGS)
- DEUTERON_MOLAR_MASS_SI
- deuteron molar mass
Unit: kg mol^-1
Uncertainty: 0.00000000063e-3
- DEUTERON_NEUTRON_MAG_MOM_RATIO
- deuteron-neutron mag. mom. ratio
Uncertainty: 0.00000011
- DEUTERON_PROTON_MAG_MOM_RATIO
- deuteron-proton mag. mom. ratio
Uncertainty: 0.00000000079
- DEUTERON_PROTON_MASS_RATIO
- deuteron-proton mass ratio
Uncertainty: 0.0000000000084
- DEUTERON_RELATIVE_ATOMIC_MASS
- deuteron relative atomic mass
Uncertainty: 0.000000000015
- DEUTERON_RMS_CHARGE_RADIUS
- DEUTERON_RMS_CHARGE_RADIUS_CGS
- deuteron rms charge radius (CGS)
- DEUTERON_RMS_CHARGE_RADIUS_SI
- deuteron rms charge radius
Unit: m
Uncertainty: 0.00027e-15
- ELECTRON_CHARGE_TO_MASS_QUOTIENT
- ELECTRON_CHARGE_TO_MASS_QUOTIENT_CGS
- electron charge to mass quotient (CGS)
- ELECTRON_CHARGE_TO_MASS_QUOTIENT_SI
- electron charge to mass quotient
Unit: C kg^-1
Uncertainty: 0.00000000055e11
- ELECTRON_DEUTERON_MAG_MOM_RATIO
- electron-deuteron mag. mom. ratio
Uncertainty: 0.0000056
- ELECTRON_DEUTERON_MASS_RATIO
- electron-deuteron mass ratio
Uncertainty: 0.000000000047e-4
- ELECTRON_GYROMAG_RATIO
- ELECTRON_GYROMAG_RATIO_CGS
- electron gyromag. ratio (CGS)
- ELECTRON_GYROMAG_RATIO_IN_MHZ_OVER_T
- ELECTRON_GYROMAG_RATIO_IN_MHZ_OVER_T_CGS
- electron gyromag. ratio in MHz/T (CGS)
- ELECTRON_GYROMAG_RATIO_IN_MHZ_OVER_T_SI
- electron gyromag. ratio in MHz/T
Unit: MHz T^-1
Uncertainty: 0.0000087
- ELECTRON_GYROMAG_RATIO_SI
- electron gyromag. ratio
Unit: s^-1 T^-1
Uncertainty: 0.00000000055e11
- ELECTRON_G_FACTOR
- electron g factor
Uncertainty: 0.00000000000036
- ELECTRON_HELION_MASS_RATIO
- electron-helion mass ratio
Uncertainty: 0.000000000053e-4
- ELECTRON_MAG_MOM
- ELECTRON_MAG_MOM_ANOMALY
- electron mag. mom. anomaly
Uncertainty: 0.00000000018e-3
- ELECTRON_MAG_MOM_CGS
- electron mag. mom. (CGS)
- ELECTRON_MAG_MOM_SI
- electron mag. mom.
Unit: J T^-1
Uncertainty: 0.0000000029e-24
- ELECTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO
- electron mag. mom. to Bohr magneton ratio
Uncertainty: 0.00000000000018
- ELECTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO
- electron mag. mom. to nuclear magneton ratio
Uncertainty: 0.000000032
- ELECTRON_MASS
- ELECTRON_MASS_CGS
- electron mass (CGS)
- ELECTRON_MASS_ENERGY_EQUIVALENT
- ELECTRON_MASS_ENERGY_EQUIVALENT_CGS
- electron mass energy equivalent (CGS)
- ELECTRON_MASS_ENERGY_EQUIVALENT_IN_MEV
- electron mass energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.00000000016 - ELECTRON_MASS_ENERGY_EQUIVALENT_SI
- electron mass energy equivalent
Unit: J
Uncertainty: 0.0000000026e-14
- ELECTRON_MASS_IN_U
- electron mass in u
Unit: u
Uncertainty: 0.000000000097e-4
- ELECTRON_MASS_SI
- electron mass
Unit: kg
Uncertainty: 0.0000000028e-31
- ELECTRON_MOLAR_MASS
- ELECTRON_MOLAR_MASS_CGS
- electron molar mass (CGS)
- ELECTRON_MOLAR_MASS_SI
- electron molar mass
Unit: kg mol^-1
Uncertainty: 0.0000000017e-7
- ELECTRON_MUON_MAG_MOM_RATIO
- electron-muon mag. mom. ratio
Uncertainty: 0.0000046
- ELECTRON_MUON_MASS_RATIO
- electron-muon mass ratio
Uncertainty: 0.00000011e-3
- ELECTRON_NEUTRON_MAG_MOM_RATIO
- electron-neutron mag. mom. ratio
Uncertainty: 0.00023
- ELECTRON_NEUTRON_MASS_RATIO
- electron-neutron mass ratio
Uncertainty: 0.0000000022e-4
- ELECTRON_PROTON_MAG_MOM_RATIO
- electron-proton mag. mom. ratio
Uncertainty: 0.00000019
- ELECTRON_PROTON_MASS_RATIO
- electron-proton mass ratio
Uncertainty: 0.000000000094e-4
- ELECTRON_RELATIVE_ATOMIC_MASS
- electron relative atomic mass
Uncertainty: 0.000000000097e-4
- ELECTRON_TAU_MASS_RATIO
- electron-tau mass ratio
Uncertainty: 0.00019e-4
- ELECTRON_TO_ALPHA_PARTICLE_MASS_RATIO
- electron to alpha particle mass ratio
Uncertainty: 0.000000000032e-4
- ELECTRON_TO_SHIELDED_HELION_MAG_MOM_RATIO
- electron to shielded helion mag. mom. ratio
Uncertainty: 0.00000070
- ELECTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO
- electron to shielded proton mag. mom. ratio
Uncertainty: 0.0000027
- ELECTRON_TRITON_MASS_RATIO
- electron-triton mass ratio
Uncertainty: 0.000000000068e-4
- ELECTRON_VOLT
- ELECTRON_VOLT_ATOMIC_MASS_UNIT_RELATIONSHIP
- electron volt-atomic mass unit relationship
Unit: u
Uncertainty: 0.00000000033e-9
- ELECTRON_VOLT_CGS
- electron volt (CGS)
- ELECTRON_VOLT_HARTREE_RELATIONSHIP
- electron volt-hartree relationship
Unit:
E_h
Uncertainty: 0.0000000000040e-2 - ELECTRON_VOLT_HERTZ_RELATIONSHIP
- electron volt-hertz relationship
Unit: Hz
Uncertainty: (exact)
- ELECTRON_VOLT_INVERSE_METER_RELATIONSHIP
- ELECTRON_VOLT_INVERSE_METER_RELATIONSHIP_CGS
- electron volt-inverse meter relationship (CGS)
- ELECTRON_VOLT_INVERSE_METER_RELATIONSHIP_SI
- electron volt-inverse meter relationship
Unit: m^-1
Uncertainty: (exact)
- ELECTRON_VOLT_JOULE_RELATIONSHIP
- ELECTRON_VOLT_JOULE_RELATIONSHIP_CGS
- electron volt-joule relationship (CGS)
- ELECTRON_VOLT_JOULE_RELATIONSHIP_SI
- electron volt-joule relationship
Unit: J
Uncertainty: (exact)
- ELECTRON_VOLT_KELVIN_RELATIONSHIP
- electron volt-kelvin relationship
Unit: K
Uncertainty: (exact)
- ELECTRON_VOLT_KILOGRAM_RELATIONSHIP
- ELECTRON_VOLT_KILOGRAM_RELATIONSHIP_CGS
- electron volt-kilogram relationship (CGS)
- ELECTRON_VOLT_KILOGRAM_RELATIONSHIP_SI
- electron volt-kilogram relationship
Unit: kg
Uncertainty: (exact)
- ELECTRON_VOLT_SI
- electron volt
Unit: J
Uncertainty: (exact)
- ELEMENTARY_CHARGE
- elementary charge
Unit: C
Uncertainty: (exact)
- ELEMENTARY_CHARGE_OVER_H_BAR
- ELEMENTARY_CHARGE_OVER_H_BAR_CGS
- elementary charge over h-bar (CGS)
- ELEMENTARY_CHARGE_OVER_H_BAR_SI
- elementary charge over h-bar
Unit: A J^-1
Uncertainty: (exact)
- FARADAY_CONSTANT
- Faraday constant
Unit: C mol^-1
Uncertainty: (exact)
- FERMI_COUPLING_CONSTANT
- Fermi coupling constant
Unit:
GeV^-2
Uncertainty: 0.0000006e-5 - FINE_STRUCTURE_CONSTANT
- fine-structure constant
Uncertainty: 0.0000000011e-3
- FIRST_RADIATION_CONSTANT
- FIRST_RADIATION_CONSTANT_CGS
- first radiation constant (CGS)
- FIRST_RADIATION_CONSTANT_FOR_SPECTRAL_RADIANCE
- FIRST_RADIATION_CONSTANT_FOR_SPECTRAL_RADIANCE_CGS
- first radiation constant for spectral radiance (CGS)
- FIRST_RADIATION_CONSTANT_FOR_SPECTRAL_RADIANCE_SI
- first radiation constant for spectral radiance
Unit: W m^2 sr^-1
Uncertainty: (exact)
- FIRST_RADIATION_CONSTANT_SI
- first radiation constant
Unit: W m^2
Uncertainty: (exact)
- HARTREE_ATOMIC_MASS_UNIT_RELATIONSHIP
- hartree-atomic mass unit relationship
Unit: u
Uncertainty: 0.00000000091e-8
- HARTREE_ELECTRON_VOLT_RELATIONSHIP
- hartree-electron volt relationship
Unit: eV
Uncertainty: 0.000000000030
- HARTREE_ENERGY
- HARTREE_ENERGY_CGS
- Hartree energy (CGS)
- HARTREE_ENERGY_IN_EV
- Hartree energy in eV
Unit: eV
Uncertainty: 0.000000000030
- HARTREE_ENERGY_SI
- Hartree energy
Unit: J
Uncertainty: 0.0000000000048e-18
- HARTREE_HERTZ_RELATIONSHIP
- hartree-hertz relationship
Unit: Hz
Uncertainty: 0.0000000000072e15
- HARTREE_INVERSE_METER_RELATIONSHIP
- HARTREE_INVERSE_METER_RELATIONSHIP_CGS
- hartree-inverse meter relationship (CGS)
- HARTREE_INVERSE_METER_RELATIONSHIP_SI
- hartree-inverse meter relationship
Unit: m^-1
Uncertainty: 0.0000000000024e7
- HARTREE_JOULE_RELATIONSHIP
- HARTREE_JOULE_RELATIONSHIP_CGS
- hartree-joule relationship (CGS)
- HARTREE_JOULE_RELATIONSHIP_SI
- hartree-joule relationship
Unit: J
Uncertainty: 0.0000000000048e-18
- HARTREE_KELVIN_RELATIONSHIP
- hartree-kelvin relationship
Unit: K
Uncertainty: 0.0000000000034e5
- HARTREE_KILOGRAM_RELATIONSHIP
- HARTREE_KILOGRAM_RELATIONSHIP_CGS
- hartree-kilogram relationship (CGS)
- HARTREE_KILOGRAM_RELATIONSHIP_SI
- hartree-kilogram relationship
Unit: kg
Uncertainty: 0.0000000000053e-35
- HELION_ELECTRON_MASS_RATIO
- helion-electron mass ratio
Uncertainty: 0.00000016
- HELION_G_FACTOR
- helion g factor
Uncertainty: 0.0000000034
- HELION_MAG_MOM
- HELION_MAG_MOM_CGS
- helion mag. mom. (CGS)
- HELION_MAG_MOM_SI
- helion mag. mom.
Unit: J T^-1
Uncertainty: 0.00000000093e-26
- HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO
- helion mag. mom. to Bohr magneton ratio
Uncertainty: 0.00000000094e-3
- HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO
- helion mag. mom. to nuclear magneton ratio
Uncertainty: 0.0000000017
- HELION_MASS
- HELION_MASS_CGS
- helion mass (CGS)
- HELION_MASS_ENERGY_EQUIVALENT
- HELION_MASS_ENERGY_EQUIVALENT_CGS
- helion mass energy equivalent (CGS)
- HELION_MASS_ENERGY_EQUIVALENT_IN_MEV
- helion mass energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.00000088 - HELION_MASS_ENERGY_EQUIVALENT_SI
- helion mass energy equivalent
Unit: J
Uncertainty: 0.0000000014e-10
- HELION_MASS_IN_U
- helion mass in u
Unit: u
Uncertainty: 0.000000000074
- HELION_MASS_SI
- helion mass
Unit: kg
Uncertainty: 0.0000000016e-27
- HELION_MOLAR_MASS
- HELION_MOLAR_MASS_CGS
- helion molar mass (CGS)
- HELION_MOLAR_MASS_SI
- helion molar mass
Unit: kg mol^-1
Uncertainty: 0.00000000094e-3
- HELION_PROTON_MASS_RATIO
- helion-proton mass ratio
Uncertainty: 0.000000000070
- HELION_RELATIVE_ATOMIC_MASS
- helion relative atomic mass
Uncertainty: 0.000000000074
- HELION_SHIELDING_SHIFT
- helion shielding shift
Uncertainty: 0.0000023e-5
- HERTZ_ATOMIC_MASS_UNIT_RELATIONSHIP
- hertz-atomic mass unit relationship
Unit: u
Uncertainty: 0.0000000014e-24
- HERTZ_ELECTRON_VOLT_RELATIONSHIP
- hertz-electron volt relationship
Unit: eV
Uncertainty: (exact)
- HERTZ_HARTREE_RELATIONSHIP
- hertz-hartree relationship
Unit:
E_h
Uncertainty: 0.0000000000017e-16 - HERTZ_INVERSE_METER_RELATIONSHIP
- HERTZ_INVERSE_METER_RELATIONSHIP_CGS
- hertz-inverse meter relationship (CGS)
- HERTZ_INVERSE_METER_RELATIONSHIP_SI
- hertz-inverse meter relationship
Unit: m^-1
Uncertainty: (exact)
- HERTZ_JOULE_RELATIONSHIP
- HERTZ_JOULE_RELATIONSHIP_CGS
- hertz-joule relationship (CGS)
- HERTZ_JOULE_RELATIONSHIP_SI
- hertz-joule relationship
Unit: J
Uncertainty: (exact)
- HERTZ_KELVIN_RELATIONSHIP
- hertz-kelvin relationship
Unit: K
Uncertainty: (exact)
- HERTZ_KILOGRAM_RELATIONSHIP
- HERTZ_KILOGRAM_RELATIONSHIP_CGS
- hertz-kilogram relationship (CGS)
- HERTZ_KILOGRAM_RELATIONSHIP_SI
- hertz-kilogram relationship
Unit: kg
Uncertainty: (exact)
- HYPERFINE_TRANSITION_FREQUENCY_OF_CS_133
- hyperfine transition frequency of Cs-133
Unit: Hz
Uncertainty: (exact)
- INVERSE_FINE_STRUCTURE_CONSTANT
- inverse fine-structure constant
Uncertainty: 0.000000021
- INVERSE_METER_ATOMIC_MASS_UNIT_RELATIONSHIP
- inverse meter-atomic mass unit relationship
Unit: u
Uncertainty: 0.00000000041e-15
- INVERSE_METER_ELECTRON_VOLT_RELATIONSHIP
- inverse meter-electron volt relationship
Unit: eV
Uncertainty: (exact)
- INVERSE_METER_HARTREE_RELATIONSHIP
- inverse meter-hartree relationship
Unit:
E_h
Uncertainty: 0.0000000000050e-8 - INVERSE_METER_HERTZ_RELATIONSHIP
- inverse meter-hertz relationship
Unit: Hz
Uncertainty: (exact)
- INVERSE_METER_JOULE_RELATIONSHIP
- INVERSE_METER_JOULE_RELATIONSHIP_CGS
- inverse meter-joule relationship (CGS)
- INVERSE_METER_JOULE_RELATIONSHIP_SI
- inverse meter-joule relationship
Unit: J
Uncertainty: (exact)
- INVERSE_METER_KELVIN_RELATIONSHIP
- inverse meter-kelvin relationship
Unit: K
Uncertainty: (exact)
- INVERSE_METER_KILOGRAM_RELATIONSHIP
- INVERSE_METER_KILOGRAM_RELATIONSHIP_CGS
- inverse meter-kilogram relationship (CGS)
- INVERSE_METER_KILOGRAM_RELATIONSHIP_SI
- inverse meter-kilogram relationship
Unit: kg
Uncertainty: (exact)
- INVERSE_OF_CONDUCTANCE_QUANTUM
- inverse of conductance quantum
Unit: ohm
Uncertainty: (exact)
- JOSEPHSON_CONSTANT
- Josephson constant
Unit: Hz V^-1
Uncertainty: (exact)
- JOULE_ATOMIC_MASS_UNIT_RELATIONSHIP
- joule-atomic mass unit relationship
Unit: u
Uncertainty: 0.0000000021e9
- JOULE_ELECTRON_VOLT_RELATIONSHIP
- joule-electron volt relationship
Unit: eV
Uncertainty: (exact)
- JOULE_HARTREE_RELATIONSHIP
- joule-hartree relationship
Unit:
E_h
Uncertainty: 0.0000000000025e17 - JOULE_HERTZ_RELATIONSHIP
- joule-hertz relationship
Unit: Hz
Uncertainty: (exact)
- JOULE_INVERSE_METER_RELATIONSHIP
- JOULE_INVERSE_METER_RELATIONSHIP_CGS
- joule-inverse meter relationship (CGS)
- JOULE_INVERSE_METER_RELATIONSHIP_SI
- joule-inverse meter relationship
Unit: m^-1
Uncertainty: (exact)
- JOULE_KELVIN_RELATIONSHIP
- joule-kelvin relationship
Unit: K
Uncertainty: (exact)
- JOULE_KILOGRAM_RELATIONSHIP
- JOULE_KILOGRAM_RELATIONSHIP_CGS
- joule-kilogram relationship (CGS)
- JOULE_KILOGRAM_RELATIONSHIP_SI
- joule-kilogram relationship
Unit: kg
Uncertainty: (exact)
- KELVIN_ATOMIC_MASS_UNIT_RELATIONSHIP
- kelvin-atomic mass unit relationship
Unit: u
Uncertainty: 0.0000000029e-14
- KELVIN_ELECTRON_VOLT_RELATIONSHIP
- kelvin-electron volt relationship
Unit: eV
Uncertainty: (exact)
- KELVIN_HARTREE_RELATIONSHIP
- kelvin-hartree relationship
Unit:
E_h
Uncertainty: 0.0000000000035e-6 - KELVIN_HERTZ_RELATIONSHIP
- kelvin-hertz relationship
Unit: Hz
Uncertainty: (exact)
- KELVIN_INVERSE_METER_RELATIONSHIP
- KELVIN_INVERSE_METER_RELATIONSHIP_CGS
- kelvin-inverse meter relationship (CGS)
- KELVIN_INVERSE_METER_RELATIONSHIP_SI
- kelvin-inverse meter relationship
Unit: m^-1
Uncertainty: (exact)
- KELVIN_JOULE_RELATIONSHIP
- KELVIN_JOULE_RELATIONSHIP_CGS
- kelvin-joule relationship (CGS)
- KELVIN_JOULE_RELATIONSHIP_SI
- kelvin-joule relationship
Unit: J
Uncertainty: (exact)
- KELVIN_KILOGRAM_RELATIONSHIP
- KELVIN_KILOGRAM_RELATIONSHIP_CGS
- kelvin-kilogram relationship (CGS)
- KELVIN_KILOGRAM_RELATIONSHIP_SI
- kelvin-kilogram relationship
Unit: kg
Uncertainty: (exact)
- KILOGRAM_ATOMIC_MASS_UNIT_RELATIONSHIP
- kilogram-atomic mass unit relationship
Unit: u
Uncertainty: 0.0000000019e26
- KILOGRAM_ELECTRON_VOLT_RELATIONSHIP
- kilogram-electron volt relationship
Unit: eV
Uncertainty: (exact)
- KILOGRAM_HARTREE_RELATIONSHIP
- kilogram-hartree relationship
Unit:
E_h
Uncertainty: 0.0000000000022e34 - KILOGRAM_HERTZ_RELATIONSHIP
- kilogram-hertz relationship
Unit: Hz
Uncertainty: (exact)
- KILOGRAM_INVERSE_METER_RELATIONSHIP
- KILOGRAM_INVERSE_METER_RELATIONSHIP_CGS
- kilogram-inverse meter relationship (CGS)
- KILOGRAM_INVERSE_METER_RELATIONSHIP_SI
- kilogram-inverse meter relationship
Unit: m^-1
Uncertainty: (exact)
- KILOGRAM_JOULE_RELATIONSHIP
- KILOGRAM_JOULE_RELATIONSHIP_CGS
- kilogram-joule relationship (CGS)
- KILOGRAM_JOULE_RELATIONSHIP_SI
- kilogram-joule relationship
Unit: J
Uncertainty: (exact)
- KILOGRAM_KELVIN_RELATIONSHIP
- kilogram-kelvin relationship
Unit: K
Uncertainty: (exact)
- LATTICE_PARAMETER_OF_SILICON
- LATTICE_PARAMETER_OF_SILICON_CGS
- lattice parameter of silicon (CGS)
- LATTICE_PARAMETER_OF_SILICON_SI
- lattice parameter of silicon
Unit: m
Uncertainty: 0.000000089e-10
- LATTICE_SPACING_OF_IDEAL_SI_220
- LATTICE_SPACING_OF_IDEAL_SI_220_CGS
- lattice spacing of ideal Si (220) (CGS)
- LATTICE_SPACING_OF_IDEAL_SI_220_SI
- lattice spacing of ideal Si (220)
Unit: m
Uncertainty: 0.000000032e-10
- LOSCHMIDT_CONSTANT_273_15_K_100_KPA
- LOSCHMIDT_CONSTANT_273_15_K_100_KPA_CGS
- Loschmidt constant (273.15 K, 100 kPa) (CGS)
- LOSCHMIDT_CONSTANT_273_15_K_100_KPA_SI
- Loschmidt constant (273.15 K, 100 kPa)
Unit: m^-3
Uncertainty: (exact)
- LOSCHMIDT_CONSTANT_273_15_K_101_325_KPA
- LOSCHMIDT_CONSTANT_273_15_K_101_325_KPA_CGS
- Loschmidt constant (273.15 K, 101.325 kPa) (CGS)
- LOSCHMIDT_CONSTANT_273_15_K_101_325_KPA_SI
- Loschmidt constant (273.15 K, 101.325 kPa)
Unit: m^-3
Uncertainty: (exact)
- LUMINOUS_EFFICACY
- LUMINOUS_EFFICACY_CGS
- luminous efficacy (CGS)
- LUMINOUS_EFFICACY_SI
- luminous efficacy
Unit: lm W^-1
Uncertainty: (exact)
- MAG_FLUX_QUANTUM
- mag. flux quantum
Unit: Wb
Uncertainty: (exact)
- MOLAR_GAS_CONSTANT
- MOLAR_GAS_CONSTANT_CGS
- molar gas constant (CGS)
- MOLAR_GAS_CONSTANT_SI
- molar gas constant
Unit: J mol^-1 K^-1
Uncertainty: (exact)
- MOLAR_MASS_CONSTANT
- MOLAR_MASS_CONSTANT_CGS
- molar mass constant (CGS)
- MOLAR_MASS_CONSTANT_SI
- molar mass constant
Unit: kg mol^-1
Uncertainty: 0.00000000031e-3
- MOLAR_MASS_OF_CARBON_12
- MOLAR_MASS_OF_CARBON_12_CGS
- molar mass of carbon-12 (CGS)
- MOLAR_MASS_OF_CARBON_12_SI
- molar mass of carbon-12
Unit: kg mol^-1
Uncertainty: 0.0000000037e-3
- MOLAR_PLANCK_CONSTANT
- MOLAR_PLANCK_CONSTANT_CGS
- molar Planck constant (CGS)
- MOLAR_PLANCK_CONSTANT_SI
- molar Planck constant
Unit: J Hz^-1 mol^-1
Uncertainty: (exact)
- MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_100_KPA
- MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_100_KPA_CGS
- molar volume of ideal gas (273.15 K, 100 kPa) (CGS)
- MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_100_KPA_SI
- molar volume of ideal gas (273.15 K, 100 kPa)
Unit: m^3 mol^-1
Uncertainty: (exact)
- MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_101_325_KPA
- MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_101_325_KPA_CGS
- molar volume of ideal gas (273.15 K, 101.325 kPa) (CGS)
- MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_101_325_KPA_SI
- molar volume of ideal gas (273.15 K, 101.325 kPa)
Unit: m^3 mol^-1
Uncertainty: (exact)
- MOLAR_VOLUME_OF_SILICON
- MOLAR_VOLUME_OF_SILICON_CGS
- molar volume of silicon (CGS)
- MOLAR_VOLUME_OF_SILICON_SI
- molar volume of silicon
Unit: m^3 mol^-1
Uncertainty: 0.000000060e-5
- MOLYBDENUM_X_UNIT
- MOLYBDENUM_X_UNIT_CGS
- Molybdenum x unit (CGS)
- MOLYBDENUM_X_UNIT_SI
- Molybdenum x unit
Unit: m
Uncertainty: 0.00000053e-13
- MUON_COMPTON_WAVELENGTH
- MUON_COMPTON_WAVELENGTH_CGS
- muon Compton wavelength (CGS)
- MUON_COMPTON_WAVELENGTH_SI
- muon Compton wavelength
Unit: m
Uncertainty: 0.000000026e-14
- MUON_ELECTRON_MASS_RATIO
- muon-electron mass ratio
Uncertainty: 0.0000046
- MUON_G_FACTOR
- muon g factor
Uncertainty: 0.00000000082
- MUON_MAG_MOM
- MUON_MAG_MOM_ANOMALY
- muon mag. mom. anomaly
Uncertainty: 0.00000041e-3
- MUON_MAG_MOM_CGS
- muon mag. mom. (CGS)
- MUON_MAG_MOM_SI
- muon mag. mom.
Unit: J T^-1
Uncertainty: 0.00000010e-26
- MUON_MAG_MOM_TO_BOHR_MAGNETON_RATIO
- muon mag. mom. to Bohr magneton ratio
Uncertainty: 0.00000011e-3
- MUON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO
- muon mag. mom. to nuclear magneton ratio
Uncertainty: 0.00000020
- MUON_MASS
- MUON_MASS_CGS
- muon mass (CGS)
- MUON_MASS_ENERGY_EQUIVALENT
- MUON_MASS_ENERGY_EQUIVALENT_CGS
- muon mass energy equivalent (CGS)
- MUON_MASS_ENERGY_EQUIVALENT_IN_MEV
- muon mass energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.0000023 - MUON_MASS_ENERGY_EQUIVALENT_SI
- muon mass energy equivalent
Unit: J
Uncertainty: 0.000000038e-11
- MUON_MASS_IN_U
- muon mass in u
Unit: u
Uncertainty: 0.0000000025
- MUON_MASS_SI
- muon mass
Unit: kg
Uncertainty: 0.000000042e-28
- MUON_MOLAR_MASS
- MUON_MOLAR_MASS_CGS
- muon molar mass (CGS)
- MUON_MOLAR_MASS_SI
- muon molar mass
Unit: kg mol^-1
Uncertainty: 0.000000025e-4
- MUON_NEUTRON_MASS_RATIO
- muon-neutron mass ratio
Uncertainty: 0.0000000025
- MUON_PROTON_MAG_MOM_RATIO
- muon-proton mag. mom. ratio
Uncertainty: 0.000000071
- MUON_PROTON_MASS_RATIO
- muon-proton mass ratio
Uncertainty: 0.0000000025
- MUON_TAU_MASS_RATIO
- muon-tau mass ratio
Uncertainty: 0.00040e-2
- NATURAL_UNIT_OF_ACTION
- NATURAL_UNIT_OF_ACTION_CGS
- natural unit of action (CGS)
- NATURAL_UNIT_OF_ACTION_IN_EV_S
- natural unit of action in eV s
Unit: eV s
Uncertainty: (exact)
- NATURAL_UNIT_OF_ACTION_SI
- natural unit of action
Unit: J s
Uncertainty: (exact)
- NATURAL_UNIT_OF_ENERGY
- NATURAL_UNIT_OF_ENERGY_CGS
- natural unit of energy (CGS)
- NATURAL_UNIT_OF_ENERGY_IN_MEV
- natural unit of energy in
MeV
Unit: MeV
Uncertainty: 0.00000000016 - NATURAL_UNIT_OF_ENERGY_SI
- natural unit of energy
Unit: J
Uncertainty: 0.0000000026e-14
- NATURAL_UNIT_OF_LENGTH
- NATURAL_UNIT_OF_LENGTH_CGS
- natural unit of length (CGS)
- NATURAL_UNIT_OF_LENGTH_SI
- natural unit of length
Unit: m
Uncertainty: 0.0000000012e-13
- NATURAL_UNIT_OF_MASS
- NATURAL_UNIT_OF_MASS_CGS
- natural unit of mass (CGS)
- NATURAL_UNIT_OF_MASS_SI
- natural unit of mass
Unit: kg
Uncertainty: 0.0000000028e-31
- NATURAL_UNIT_OF_MOMENTUM
- NATURAL_UNIT_OF_MOMENTUM_CGS
- natural unit of momentum (CGS)
- NATURAL_UNIT_OF_MOMENTUM_IN_MEV_OVER_C
- natural unit of momentum in
MeV/c
Unit: MeV/c
Uncertainty: 0.00000000016 - NATURAL_UNIT_OF_MOMENTUM_SI
- natural unit of momentum
Unit: kg m s^-1
Uncertainty: 0.00000000085e-22
- NATURAL_UNIT_OF_TIME
- natural unit of time
Unit: s
Uncertainty: 0.00000000040e-21
- NATURAL_UNIT_OF_VELOCITY
- NATURAL_UNIT_OF_VELOCITY_CGS
- natural unit of velocity (CGS)
- NATURAL_UNIT_OF_VELOCITY_SI
- natural unit of velocity
Unit: m s^-1
Uncertainty: (exact)
- NEUTRON_COMPTON_WAVELENGTH
- NEUTRON_COMPTON_WAVELENGTH_CGS
- neutron Compton wavelength (CGS)
- NEUTRON_COMPTON_WAVELENGTH_SI
- neutron Compton wavelength
Unit: m
Uncertainty: 0.00000000067e-15
- NEUTRON_ELECTRON_MAG_MOM_RATIO
- neutron-electron mag. mom. ratio
Uncertainty: 0.00000024e-3
- NEUTRON_ELECTRON_MASS_RATIO
- neutron-electron mass ratio
Uncertainty: 0.00000074
- NEUTRON_GYROMAG_RATIO
- NEUTRON_GYROMAG_RATIO_CGS
- neutron gyromag. ratio (CGS)
- NEUTRON_GYROMAG_RATIO_IN_MHZ_OVER_T
- NEUTRON_GYROMAG_RATIO_IN_MHZ_OVER_T_CGS
- neutron gyromag. ratio in MHz/T (CGS)
- NEUTRON_GYROMAG_RATIO_IN_MHZ_OVER_T_SI
- neutron gyromag. ratio in MHz/T
Unit: MHz T^-1
Uncertainty: 0.0000069
- NEUTRON_GYROMAG_RATIO_SI
- neutron gyromag. ratio
Unit: s^-1 T^-1
Uncertainty: 0.00000043e8
- NEUTRON_G_FACTOR
- neutron g factor
Uncertainty: 0.00000090
- NEUTRON_MAG_MOM
- NEUTRON_MAG_MOM_CGS
- neutron mag. mom. (CGS)
- NEUTRON_MAG_MOM_SI
- neutron mag. mom.
Unit: J T^-1
Uncertainty: 0.0000023e-27
- NEUTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO
- neutron mag. mom. to Bohr magneton ratio
Uncertainty: 0.00000025e-3
- NEUTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO
- neutron mag. mom. to nuclear magneton ratio
Uncertainty: 0.00000045
- NEUTRON_MASS
- NEUTRON_MASS_CGS
- neutron mass (CGS)
- NEUTRON_MASS_ENERGY_EQUIVALENT
- NEUTRON_MASS_ENERGY_EQUIVALENT_CGS
- neutron mass energy equivalent (CGS)
- NEUTRON_MASS_ENERGY_EQUIVALENT_IN_MEV
- neutron mass energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.00000048 - NEUTRON_MASS_ENERGY_EQUIVALENT_SI
- neutron mass energy equivalent
Unit: J
Uncertainty: 0.00000000076e-10
- NEUTRON_MASS_IN_U
- neutron mass in u
Unit: u
Uncertainty: 0.00000000040
- NEUTRON_MASS_SI
- neutron mass
Unit: kg
Uncertainty: 0.00000000085e-27
- NEUTRON_MOLAR_MASS
- NEUTRON_MOLAR_MASS_CGS
- neutron molar mass (CGS)
- NEUTRON_MOLAR_MASS_SI
- neutron molar mass
Unit: kg mol^-1
Uncertainty: 0.00000000051e-3
- NEUTRON_MUON_MASS_RATIO
- neutron-muon mass ratio
Uncertainty: 0.00000020
- NEUTRON_PROTON_MAG_MOM_RATIO
- neutron-proton mag. mom. ratio
Uncertainty: 0.00000016
- NEUTRON_PROTON_MASS_DIFFERENCE
- NEUTRON_PROTON_MASS_DIFFERENCE_CGS
- neutron-proton mass difference (CGS)
- NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT
- NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_CGS
- neutron-proton mass difference energy equivalent (CGS)
- NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_IN_MEV
- neutron-proton mass difference energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.00000038 - NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_SI
- neutron-proton mass difference energy equivalent
Unit: J
Uncertainty: 0.00000060e-13
- NEUTRON_PROTON_MASS_DIFFERENCE_IN_U
- neutron-proton mass difference in u
Unit: u
Uncertainty: 0.00000040e-3
- NEUTRON_PROTON_MASS_DIFFERENCE_SI
- neutron-proton mass difference
Unit: kg
Uncertainty: 0.00000067e-30
- NEUTRON_PROTON_MASS_RATIO
- neutron-proton mass ratio
Uncertainty: 0.00000000040
- NEUTRON_RELATIVE_ATOMIC_MASS
- neutron relative atomic mass
Uncertainty: 0.00000000040
- NEUTRON_TAU_MASS_RATIO
- neutron-tau mass ratio
Uncertainty: 0.000036
- NEUTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO
- neutron to shielded proton mag. mom. ratio
Uncertainty: 0.00000016
- NEWTONIAN_CONSTANT_OF_GRAVITATION
- NEWTONIAN_CONSTANT_OF_GRAVITATION_CGS
- Newtonian constant of gravitation (CGS)
- NEWTONIAN_CONSTANT_OF_GRAVITATION_OVER_H_BAR_C
- Newtonian constant of gravitation over h-bar c
Unit: (
GeV/c^2)^-2
Uncertainty: 0.00015e-39 - NEWTONIAN_CONSTANT_OF_GRAVITATION_SI
- Newtonian constant of gravitation
Unit: m^3 kg^-1 s^-2
Uncertainty: 0.00015e-11
- NUCLEAR_MAGNETON
- NUCLEAR_MAGNETON_CGS
- nuclear magneton (CGS)
- NUCLEAR_MAGNETON_IN_EV_OVER_T
- NUCLEAR_MAGNETON_IN_EV_OVER_T_CGS
- nuclear magneton in eV/T (CGS)
- NUCLEAR_MAGNETON_IN_EV_OVER_T_SI
- nuclear magneton in eV/T
Unit: eV T^-1
Uncertainty: 0.00000000098e-8
- NUCLEAR_MAGNETON_IN_INVERSE_METER_PER_TESLA
- NUCLEAR_MAGNETON_IN_INVERSE_METER_PER_TESLA_CGS
- nuclear magneton in inverse meter per tesla (CGS)
- NUCLEAR_MAGNETON_IN_INVERSE_METER_PER_TESLA_SI
- nuclear magneton in inverse meter per tesla
Unit: m^-1 T^-1
Uncertainty: 0.00000000079e-2
- NUCLEAR_MAGNETON_IN_K_OVER_T
- NUCLEAR_MAGNETON_IN_K_OVER_T_CGS
- nuclear magneton in K/T (CGS)
- NUCLEAR_MAGNETON_IN_K_OVER_T_SI
- nuclear magneton in K/T
Unit: K T^-1
Uncertainty: 0.0000000011e-4
- NUCLEAR_MAGNETON_IN_MHZ_OVER_T
- NUCLEAR_MAGNETON_IN_MHZ_OVER_T_CGS
- nuclear magneton in MHz/T (CGS)
- NUCLEAR_MAGNETON_IN_MHZ_OVER_T_SI
- nuclear magneton in MHz/T
Unit: MHz T^-1
Uncertainty: 0.0000000024
- NUCLEAR_MAGNETON_SI
- nuclear magneton
Unit: J T^-1
Uncertainty: 0.0000000016e-27
- PLANCK_CONSTANT
- PLANCK_CONSTANT_CGS
- Planck constant (CGS)
- PLANCK_CONSTANT_IN_EV_OVER_HZ
- Planck constant in eV/Hz
Unit: eV Hz^-1
Uncertainty: (exact)
- PLANCK_CONSTANT_SI
- Planck constant
Unit: J Hz^-1
Uncertainty: (exact)
- PLANCK_LENGTH
- PLANCK_LENGTH_CGS
- Planck length (CGS)
- PLANCK_LENGTH_SI
- Planck length
Unit: m
Uncertainty: 0.000018e-35
- PLANCK_MASS
- PLANCK_MASS_CGS
- Planck mass (CGS)
- PLANCK_MASS_ENERGY_EQUIVALENT_IN_GEV
- Planck mass energy equivalent in
GeV
Unit: GeV
Uncertainty: 0.000014e19 - PLANCK_MASS_SI
- Planck mass
Unit: kg
Uncertainty: 0.000024e-8
- PLANCK_TEMPERATURE
- Planck temperature
Unit: K
Uncertainty: 0.000016e32
- PLANCK_TIME
- Planck time
Unit: s
Uncertainty: 0.000060e-44
- PROTON_CHARGE_TO_MASS_QUOTIENT
- PROTON_CHARGE_TO_MASS_QUOTIENT_CGS
- proton charge to mass quotient (CGS)
- PROTON_CHARGE_TO_MASS_QUOTIENT_SI
- proton charge to mass quotient
Unit: C kg^-1
Uncertainty: 0.0000000030e7
- PROTON_COMPTON_WAVELENGTH
- PROTON_COMPTON_WAVELENGTH_CGS
- proton Compton wavelength (CGS)
- PROTON_COMPTON_WAVELENGTH_SI
- proton Compton wavelength
Unit: m
Uncertainty: 0.00000000041e-15
- PROTON_ELECTRON_MASS_RATIO
- proton-electron mass ratio
Uncertainty: 0.000000032
- PROTON_GYROMAG_RATIO
- PROTON_GYROMAG_RATIO_CGS
- proton gyromag. ratio (CGS)
- PROTON_GYROMAG_RATIO_IN_MHZ_OVER_T
- PROTON_GYROMAG_RATIO_IN_MHZ_OVER_T_CGS
- proton gyromag. ratio in MHz/T (CGS)
- PROTON_GYROMAG_RATIO_IN_MHZ_OVER_T_SI
- proton gyromag. ratio in MHz/T
Unit: MHz T^-1
Uncertainty: 0.000000018
- PROTON_GYROMAG_RATIO_SI
- proton gyromag. ratio
Unit: s^-1 T^-1
Uncertainty: 0.0000000011e8
- PROTON_G_FACTOR
- proton g factor
Uncertainty: 0.0000000016
- PROTON_MAG_MOM
- PROTON_MAG_MOM_CGS
- proton mag. mom. (CGS)
- PROTON_MAG_MOM_SI
- proton mag. mom.
Unit: J T^-1
Uncertainty: 0.00000000060e-26
- PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO
- proton mag. mom. to Bohr magneton ratio
Uncertainty: 0.00000000045e-3
- PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO
- proton mag. mom. to nuclear magneton ratio
Uncertainty: 0.00000000082
- PROTON_MAG_SHIELDING_CORRECTION
- proton mag. shielding correction
Uncertainty: 0.00041e-5
- PROTON_MASS
- PROTON_MASS_CGS
- proton mass (CGS)
- PROTON_MASS_ENERGY_EQUIVALENT
- PROTON_MASS_ENERGY_EQUIVALENT_CGS
- proton mass energy equivalent (CGS)
- PROTON_MASS_ENERGY_EQUIVALENT_IN_MEV
- proton mass energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.00000029 - PROTON_MASS_ENERGY_EQUIVALENT_SI
- proton mass energy equivalent
Unit: J
Uncertainty: 0.00000000047e-10
- PROTON_MASS_IN_U
- proton mass in u
Unit: u
Uncertainty: 0.0000000000083
- PROTON_MASS_SI
- proton mass
Unit: kg
Uncertainty: 0.00000000052e-27
- PROTON_MOLAR_MASS
- PROTON_MOLAR_MASS_CGS
- proton molar mass (CGS)
- PROTON_MOLAR_MASS_SI
- proton molar mass
Unit: kg mol^-1
Uncertainty: 0.00000000031e-3
- PROTON_MUON_MASS_RATIO
- proton-muon mass ratio
Uncertainty: 0.00000020
- PROTON_NEUTRON_MAG_MOM_RATIO
- proton-neutron mag. mom. ratio
Uncertainty: 0.00000034
- PROTON_NEUTRON_MASS_RATIO
- proton-neutron mass ratio
Uncertainty: 0.00000000040
- PROTON_RELATIVE_ATOMIC_MASS
- proton relative atomic mass
Uncertainty: 0.0000000000083
- PROTON_RMS_CHARGE_RADIUS
- PROTON_RMS_CHARGE_RADIUS_CGS
- proton rms charge radius (CGS)
- PROTON_RMS_CHARGE_RADIUS_SI
- proton rms charge radius
Unit: m
Uncertainty: 0.0064e-16
- PROTON_TAU_MASS_RATIO
- proton-tau mass ratio
Uncertainty: 0.000036
- QUANTUM_OF_CIRCULATION
- QUANTUM_OF_CIRCULATION_CGS
- quantum of circulation (CGS)
- QUANTUM_OF_CIRCULATION_SI
- quantum of circulation
Unit: m^2 s^-1
Uncertainty: 0.0000000011e-4
- QUANTUM_OF_CIRCULATION_TIMES_2
- QUANTUM_OF_CIRCULATION_TIMES_2_CGS
- quantum of circulation times 2 (CGS)
- QUANTUM_OF_CIRCULATION_TIMES_2_SI
- quantum of circulation times 2
Unit: m^2 s^-1
Uncertainty: 0.0000000023e-4
- REDUCED_COMPTON_WAVELENGTH
- REDUCED_COMPTON_WAVELENGTH_CGS
- reduced Compton wavelength (CGS)
- REDUCED_COMPTON_WAVELENGTH_SI
- reduced Compton wavelength
Unit: m
Uncertainty: 0.0000000012e-13
- REDUCED_MUON_COMPTON_WAVELENGTH
- REDUCED_MUON_COMPTON_WAVELENGTH_CGS
- reduced muon Compton wavelength (CGS)
- REDUCED_MUON_COMPTON_WAVELENGTH_SI
- reduced muon Compton wavelength
Unit: m
Uncertainty: 0.000000042e-15
- REDUCED_NEUTRON_COMPTON_WAVELENGTH
- REDUCED_NEUTRON_COMPTON_WAVELENGTH_CGS
- reduced neutron Compton wavelength (CGS)
- REDUCED_NEUTRON_COMPTON_WAVELENGTH_SI
- reduced neutron Compton wavelength
Unit: m
Uncertainty: 0.0000000011e-16
- REDUCED_PLANCK_CONSTANT
- REDUCED_PLANCK_CONSTANT_CGS
- reduced Planck constant (CGS)
- REDUCED_PLANCK_CONSTANT_IN_EV_S
- reduced Planck constant in eV s
Unit: eV s
Uncertainty: (exact)
- REDUCED_PLANCK_CONSTANT_SI
- reduced Planck constant
Unit: J s
Uncertainty: (exact)
- REDUCED_PLANCK_CONSTANT_TIMES_C_IN_MEV_FM
- reduced Planck constant times c in
MeV fm
Unit: MeV fm
Uncertainty: (exact) - REDUCED_PROTON_COMPTON_WAVELENGTH
- REDUCED_PROTON_COMPTON_WAVELENGTH_CGS
- reduced proton Compton wavelength (CGS)
- REDUCED_PROTON_COMPTON_WAVELENGTH_SI
- reduced proton Compton wavelength
Unit: m
Uncertainty: 0.00000000066e-16
- REDUCED_TAU_COMPTON_WAVELENGTH
- REDUCED_TAU_COMPTON_WAVELENGTH_CGS
- reduced tau Compton wavelength (CGS)
- REDUCED_TAU_COMPTON_WAVELENGTH_SI
- reduced tau Compton wavelength
Unit: m
Uncertainty: 0.000075e-16
- RYDBERG_CONSTANT
- RYDBERG_CONSTANT_CGS
- Rydberg constant (CGS)
- RYDBERG_CONSTANT_SI
- Rydberg constant
Unit: m^-1
Uncertainty: 0.000012
- RYDBERG_CONSTANT_TIMES_C_IN_HZ
- Rydberg constant times c in Hz
Unit: Hz
Uncertainty: 0.0000000000036e15
- RYDBERG_CONSTANT_TIMES_HC_IN_EV
- Rydberg constant times hc in eV
Unit: eV
Uncertainty: 0.000000000015
- RYDBERG_CONSTANT_TIMES_HC_IN_J
- RYDBERG_CONSTANT_TIMES_HC_IN_J_CGS
- Rydberg constant times hc in J (CGS)
- RYDBERG_CONSTANT_TIMES_HC_IN_J_SI
- Rydberg constant times hc in J
Unit: J
Uncertainty: 0.0000000000024e-18
- SACKUR_TETRODE_CONSTANT_1_K_100_KPA
- Sackur-Tetrode constant (1 K, 100 kPa)
Uncertainty: 0.00000000047
- SACKUR_TETRODE_CONSTANT_1_K_101_325_KPA
- Sackur-Tetrode constant (1 K, 101.325 kPa)
Uncertainty: 0.00000000047
- SECOND_RADIATION_CONSTANT
- SECOND_RADIATION_CONSTANT_CGS
- second radiation constant (CGS)
- SECOND_RADIATION_CONSTANT_SI
- second radiation constant
Unit: m K
Uncertainty: (exact)
- SHIELDED_HELION_GYROMAG_RATIO
- SHIELDED_HELION_GYROMAG_RATIO_CGS
- shielded helion gyromag. ratio (CGS)
- SHIELDED_HELION_GYROMAG_RATIO_IN_MHZ_OVER_T
- SHIELDED_HELION_GYROMAG_RATIO_IN_MHZ_OVER_T_CGS
- shielded helion gyromag. ratio in MHz/T (CGS)
- SHIELDED_HELION_GYROMAG_RATIO_IN_MHZ_OVER_T_SI
- shielded helion gyromag. ratio in MHz/T
Unit: MHz T^-1
Uncertainty: 0.000000028
- SHIELDED_HELION_GYROMAG_RATIO_SI
- shielded helion gyromag. ratio
Unit: s^-1 T^-1
Uncertainty: 0.0000000018e8
- SHIELDED_HELION_MAG_MOM
- SHIELDED_HELION_MAG_MOM_CGS
- shielded helion mag. mom. (CGS)
- SHIELDED_HELION_MAG_MOM_SI
- shielded helion mag. mom.
Unit: J T^-1
Uncertainty: 0.00000000093e-26
- SHIELDED_HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO
- shielded helion mag. mom. to Bohr magneton ratio
Uncertainty: 0.00000000094e-3
- SHIELDED_HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO
- shielded helion mag. mom. to nuclear magneton ratio
Uncertainty: 0.0000000017
- SHIELDED_HELION_TO_PROTON_MAG_MOM_RATIO
- shielded helion to proton mag. mom. ratio
Uncertainty: 0.00000000066
- SHIELDED_HELION_TO_SHIELDED_PROTON_MAG_MOM_RATIO
- shielded helion to shielded proton mag. mom. ratio
Uncertainty: 0.0000000031
- SHIELDED_PROTON_GYROMAG_RATIO
- SHIELDED_PROTON_GYROMAG_RATIO_CGS
- shielded proton gyromag. ratio (CGS)
- SHIELDED_PROTON_GYROMAG_RATIO_IN_MHZ_OVER_T
- SHIELDED_PROTON_GYROMAG_RATIO_IN_MHZ_OVER_T_CGS
- shielded proton gyromag. ratio in MHz/T (CGS)
- SHIELDED_PROTON_GYROMAG_RATIO_IN_MHZ_OVER_T_SI
- shielded proton gyromag. ratio in MHz/T
Unit: MHz T^-1
Uncertainty: 0.00000017
- SHIELDED_PROTON_GYROMAG_RATIO_SI
- shielded proton gyromag. ratio
Unit: s^-1 T^-1
Uncertainty: 0.000000011e8
- SHIELDED_PROTON_MAG_MOM
- SHIELDED_PROTON_MAG_MOM_CGS
- shielded proton mag. mom. (CGS)
- SHIELDED_PROTON_MAG_MOM_SI
- shielded proton mag. mom.
Unit: J T^-1
Uncertainty: 0.0000000058e-26
- SHIELDED_PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO
- shielded proton mag. mom. to Bohr magneton ratio
Uncertainty: 0.0000000062e-3
- SHIELDED_PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO
- shielded proton mag. mom. to nuclear magneton ratio
Uncertainty: 0.000000011
- SHIELDING_DIFFERENCE_OF_D_AND_P_IN_HD
- shielding difference of d and p in HD
Uncertainty: 0.00010e-8
- SHIELDING_DIFFERENCE_OF_T_AND_P_IN_HT
- shielding difference of t and p in HT
Uncertainty: 0.00020e-8
- SPEED_OF_LIGHT_IN_VACUUM
- SPEED_OF_LIGHT_IN_VACUUM_CGS
- speed of light in vacuum (CGS)
- SPEED_OF_LIGHT_IN_VACUUM_SI
- speed of light in vacuum
Unit: m s^-1
Uncertainty: (exact)
- STANDARD_ACCELERATION_OF_GRAVITY
- STANDARD_ACCELERATION_OF_GRAVITY_CGS
- standard acceleration of gravity (CGS)
- STANDARD_ACCELERATION_OF_GRAVITY_SI
- standard acceleration of gravity
Unit: m s^-2
Uncertainty: (exact)
- STANDARD_ATMOSPHERE
- STANDARD_ATMOSPHERE_CGS
- standard atmosphere (CGS)
- STANDARD_ATMOSPHERE_SI
- standard atmosphere
Unit: Pa
Uncertainty: (exact)
- STANDARD_STATE_PRESSURE
- STANDARD_STATE_PRESSURE_CGS
- standard-state pressure (CGS)
- STANDARD_STATE_PRESSURE_SI
- standard-state pressure
Unit: Pa
Uncertainty: (exact)
- STEFAN_BOLTZMANN_CONSTANT
- STEFAN_BOLTZMANN_CONSTANT_CGS
- Stefan-Boltzmann constant (CGS)
- STEFAN_BOLTZMANN_CONSTANT_SI
- Stefan-Boltzmann constant
Unit: W m^-2 K^-4
Uncertainty: (exact)
- TAU_COMPTON_WAVELENGTH
- TAU_COMPTON_WAVELENGTH_CGS
- tau Compton wavelength (CGS)
- TAU_COMPTON_WAVELENGTH_SI
- tau Compton wavelength
Unit: m
Uncertainty: 0.00047e-16
- TAU_ELECTRON_MASS_RATIO
- tau-electron mass ratio
Uncertainty: 0.23
- TAU_ENERGY_EQUIVALENT
- tau energy equivalent
Unit:
MeV
Uncertainty: 0.12 - TAU_MASS
- TAU_MASS_CGS
- tau mass (CGS)
- TAU_MASS_ENERGY_EQUIVALENT
- TAU_MASS_ENERGY_EQUIVALENT_CGS
- tau mass energy equivalent (CGS)
- TAU_MASS_ENERGY_EQUIVALENT_SI
- tau mass energy equivalent
Unit: J
Uncertainty: 0.00019e-10
- TAU_MASS_IN_U
- tau mass in u
Unit: u
Uncertainty: 0.00013
- TAU_MASS_SI
- tau mass
Unit: kg
Uncertainty: 0.00021e-27
- TAU_MOLAR_MASS
- TAU_MOLAR_MASS_CGS
- tau molar mass (CGS)
- TAU_MOLAR_MASS_SI
- tau molar mass
Unit: kg mol^-1
Uncertainty: 0.00013e-3
- TAU_MUON_MASS_RATIO
- tau-muon mass ratio
Uncertainty: 0.0011
- TAU_NEUTRON_MASS_RATIO
- tau-neutron mass ratio
Uncertainty: 0.00013
- TAU_PROTON_MASS_RATIO
- tau-proton mass ratio
Uncertainty: 0.00013
- THOMSON_CROSS_SECTION
- THOMSON_CROSS_SECTION_CGS
- Thomson cross section (CGS)
- THOMSON_CROSS_SECTION_SI
- Thomson cross section
Unit: m^2
Uncertainty: 0.0000000062e-29
- TRITON_ELECTRON_MASS_RATIO
- triton-electron mass ratio
Uncertainty: 0.00000021
- TRITON_G_FACTOR
- triton g factor
Uncertainty: 0.000000012
- TRITON_MAG_MOM
- TRITON_MAG_MOM_CGS
- triton mag. mom. (CGS)
- TRITON_MAG_MOM_SI
- triton mag. mom.
Unit: J T^-1
Uncertainty: 0.0000000030e-26
- TRITON_MAG_MOM_TO_BOHR_MAGNETON_RATIO
- triton mag. mom. to Bohr magneton ratio
Uncertainty: 0.0000000032e-3
- TRITON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO
- triton mag. mom. to nuclear magneton ratio
Uncertainty: 0.0000000059
- TRITON_MASS
- TRITON_MASS_CGS
- triton mass (CGS)
- TRITON_MASS_ENERGY_EQUIVALENT
- TRITON_MASS_ENERGY_EQUIVALENT_CGS
- triton mass energy equivalent (CGS)
- TRITON_MASS_ENERGY_EQUIVALENT_IN_MEV
- triton mass energy equivalent in
MeV
Unit: MeV
Uncertainty: 0.00000088 - TRITON_MASS_ENERGY_EQUIVALENT_SI
- triton mass energy equivalent
Unit: J
Uncertainty: 0.0000000014e-10
- TRITON_MASS_IN_U
- triton mass in u
Unit: u
Uncertainty: 0.00000000010
- TRITON_MASS_SI
- triton mass
Unit: kg
Uncertainty: 0.0000000016e-27
- TRITON_MOLAR_MASS
- TRITON_MOLAR_MASS_CGS
- triton molar mass (CGS)
- TRITON_MOLAR_MASS_SI
- triton molar mass
Unit: kg mol^-1
Uncertainty: 0.00000000094e-3
- TRITON_PROTON_MASS_RATIO
- triton-proton mass ratio
Uncertainty: 0.00000000010
- TRITON_RELATIVE_ATOMIC_MASS
- triton relative atomic mass
Uncertainty: 0.00000000010
- TRITON_TO_PROTON_MAG_MOM_RATIO
- triton to proton mag. mom. ratio
Uncertainty: 0.0000000021
- UNIFIED_ATOMIC_MASS_UNIT
- UNIFIED_ATOMIC_MASS_UNIT_CGS
- unified atomic mass unit (CGS)
- UNIFIED_ATOMIC_MASS_UNIT_SI
- unified atomic mass unit
Unit: kg
Uncertainty: 0.00000000052e-27
- VACUUM_ELECTRIC_PERMITTIVITY
- VACUUM_ELECTRIC_PERMITTIVITY_CGS
- vacuum electric permittivity (CGS)
- VACUUM_ELECTRIC_PERMITTIVITY_SI
- vacuum electric permittivity
Unit: F m^-1
Uncertainty: 0.0000000014e-12
- VACUUM_MAG_PERMEABILITY
- VACUUM_MAG_PERMEABILITY_CGS
- vacuum mag. permeability (CGS)
- VACUUM_MAG_PERMEABILITY_SI
- vacuum mag. permeability
Unit: N A^-2
Uncertainty: 0.00000000020e-6
- VON_KLITZING_CONSTANT
- von Klitzing constant
Unit: ohm
Uncertainty: (exact)
- WEAK_MIXING_ANGLE
- weak mixing angle
Uncertainty: 0.00023
- WIEN_FREQUENCY_DISPLACEMENT_LAW_CONSTANT
- Wien frequency displacement law constant
Unit: Hz K^-1
Uncertainty: (exact)
- WIEN_WAVELENGTH_DISPLACEMENT_LAW_CONSTANT
- WIEN_WAVELENGTH_DISPLACEMENT_LAW_CONSTANT_CGS
- Wien wavelength displacement law constant (CGS)
- WIEN_WAVELENGTH_DISPLACEMENT_LAW_CONSTANT_SI
- Wien wavelength displacement law constant
Unit: m K
Uncertainty: (exact)
- W_TO_Z_MASS_RATIO
- W to Z mass ratio
Uncertainty: 0.00013
- find
- Find a constant by its official name.