/// alpha particle-electron mass ratio (dimensionless)
pub const ALPHA_PARTICLE_ELECTRON_MASS_RATIO: f64 = 7294.29954142f64;
/// alpha particle mass (unit: kg)
pub const ALPHA_PARTICLE_MASS: f64 = 6.6446573357e-27f64;
/// alpha particle mass energy equivalent (unit: J)
pub const ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT: f64 = 5.9719201914e-10f64;
/// alpha particle mass energy equivalent in MeV (unit: MeV)
pub const ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_IN_MEV: f64 = 3727.3794066f64;
/// alpha particle mass in u (unit: u)
pub const ALPHA_PARTICLE_MASS_IN_U: f64 = 4.001506179127f64;
/// alpha particle molar mass (unit: kg⋅mol<sup>-1</sup>)
pub const ALPHA_PARTICLE_MOLAR_MASS: f64 = 4.0015061777e-3f64;
/// alpha particle-proton mass ratio (dimensionless)
pub const ALPHA_PARTICLE_PROTON_MASS_RATIO: f64 = 3.97259969009f64;
/// alpha particle relative atomic mass (dimensionless)
pub const ALPHA_PARTICLE_RELATIVE_ATOMIC_MASS: f64 = 4.001506179127f64;
/// Angstrom star (unit: m)
pub const ANGSTROM_STAR: f64 = 1.00001495e-10f64;
/// atomic mass constant (unit: kg)
pub const ATOMIC_MASS_CONSTANT: f64 = 1.66053906660e-27f64;
/// atomic mass constant energy equivalent (unit: J)
pub const ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT: f64 = 1.49241808560e-10f64;
/// atomic mass constant energy equivalent in MeV (unit: MeV)
pub const ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_IN_MEV: f64 = 931.49410242f64;
/// atomic mass unit-electron volt relationship (unit: eV)
pub const ATOMIC_MASS_UNIT_ELECTRON_VOLT_RELATIONSHIP: f64 = 9.3149410242e8f64;
/// atomic mass unit-hartree relationship (unit: E_h)
pub const ATOMIC_MASS_UNIT_HARTREE_RELATIONSHIP: f64 = 3.4231776874e7f64;
/// atomic mass unit-hertz relationship (unit: Hz)
pub const ATOMIC_MASS_UNIT_HERTZ_RELATIONSHIP: f64 = 2.25234271871e23f64;
/// atomic mass unit-inverse meter relationship (unit: m<sup>-1</sup>)
pub const ATOMIC_MASS_UNIT_INVERSE_METER_RELATIONSHIP: f64 = 7.5130066104e14f64;
/// atomic mass unit-joule relationship (unit: J)
pub const ATOMIC_MASS_UNIT_JOULE_RELATIONSHIP: f64 = 1.49241808560e-10f64;
/// atomic mass unit-kelvin relationship (unit: K)
pub const ATOMIC_MASS_UNIT_KELVIN_RELATIONSHIP: f64 = 1.08095401916e13f64;
/// atomic mass unit-kilogram relationship (unit: kg)
pub const ATOMIC_MASS_UNIT_KILOGRAM_RELATIONSHIP: f64 = 1.66053906660e-27f64;
/// atomic unit of 1st hyperpolarizability (unit: C<sup>3</sup>⋅m<sup>3</sup>⋅J<sup>-2</sup>)
pub const ATOMIC_UNIT_OF_1ST_HYPERPOLARIZABILITY: f64 = 3.2063613061e-53f64;
/// atomic unit of 2nd hyperpolarizability (unit: C<sup>4</sup>⋅m<sup>4</sup>⋅J<sup>-3</sup>)
pub const ATOMIC_UNIT_OF_2ND_HYPERPOLARIZABILITY: f64 = 6.2353799905e-65f64;
/// atomic unit of action (unit: J⋅s)
pub const ATOMIC_UNIT_OF_ACTION: f64 = 1.054571817e-34f64;
/// atomic unit of charge (unit: C)
pub const ATOMIC_UNIT_OF_CHARGE: f64 = 1.602176634e-19f64;
/// atomic unit of charge density (unit: C⋅m<sup>-3</sup>)
pub const ATOMIC_UNIT_OF_CHARGE_DENSITY: f64 = 1.08120238457e12f64;
/// atomic unit of current (unit: A)
pub const ATOMIC_UNIT_OF_CURRENT: f64 = 6.623618237510e-3f64;
/// atomic unit of electric dipole mom. (unit: C⋅m)
pub const ATOMIC_UNIT_OF_ELECTRIC_DIPOLE_MOM: f64 = 8.4783536255e-30f64;
/// atomic unit of electric field (unit: V⋅m<sup>-1</sup>)
pub const ATOMIC_UNIT_OF_ELECTRIC_FIELD: f64 = 5.14220674763e11f64;
/// atomic unit of electric field gradient (unit: V⋅m<sup>-2</sup>)
pub const ATOMIC_UNIT_OF_ELECTRIC_FIELD_GRADIENT: f64 = 9.7173624292e21f64;
/// atomic unit of electric polarizability (unit: C<sup>2</sup>⋅m<sup>2</sup>⋅J<sup>-1</sup>)
pub const ATOMIC_UNIT_OF_ELECTRIC_POLARIZABILITY: f64 = 1.64877727436e-41f64;
/// atomic unit of electric potential (unit: V)
pub const ATOMIC_UNIT_OF_ELECTRIC_POTENTIAL: f64 = 27.211386245988f64;
/// atomic unit of electric quadrupole mom. (unit: C⋅m<sup>2</sup>)
pub const ATOMIC_UNIT_OF_ELECTRIC_QUADRUPOLE_MOM: f64 = 4.4865515246e-40f64;
/// atomic unit of energy (unit: J)
pub const ATOMIC_UNIT_OF_ENERGY: f64 = 4.3597447222071e-18f64;
/// atomic unit of force (unit: N)
pub const ATOMIC_UNIT_OF_FORCE: f64 = 8.2387234983e-8f64;
/// atomic unit of length (unit: m)
pub const ATOMIC_UNIT_OF_LENGTH: f64 = 5.29177210903e-11f64;
/// atomic unit of mag. dipole mom. (unit: J⋅T<sup>-1</sup>)
pub const ATOMIC_UNIT_OF_MAG_DIPOLE_MOM: f64 = 1.85480201566e-23f64;
/// atomic unit of mag. flux density (unit: T)
pub const ATOMIC_UNIT_OF_MAG_FLUX_DENSITY: f64 = 2.35051756758e5f64;
/// atomic unit of magnetizability (unit: J⋅T<sup>-2</sup>)
pub const ATOMIC_UNIT_OF_MAGNETIZABILITY: f64 = 7.8910366008e-29f64;
/// atomic unit of mass (unit: kg)
pub const ATOMIC_UNIT_OF_MASS: f64 = 9.1093837015e-31f64;
/// atomic unit of momentum (unit: kg⋅m⋅s<sup>-1</sup>)
pub const ATOMIC_UNIT_OF_MOMENTUM: f64 = 1.99285191410e-24f64;
/// atomic unit of permittivity (unit: F⋅m<sup>-1</sup>)
pub const ATOMIC_UNIT_OF_PERMITTIVITY: f64 = 1.11265005545e-10f64;
/// atomic unit of time (unit: s)
pub const ATOMIC_UNIT_OF_TIME: f64 = 2.4188843265857e-17f64;
/// atomic unit of velocity (unit: m⋅s<sup>-1</sup>)
pub const ATOMIC_UNIT_OF_VELOCITY: f64 = 2.18769126364e6f64;
/// Avogadro constant (unit: mol<sup>-1</sup>)
pub const AVOGADRO_CONSTANT: f64 = 6.02214076e23f64;
/// Bohr magneton (unit: J⋅T<sup>-1</sup>)
pub const BOHR_MAGNETON: f64 = 9.2740100783e-24f64;
/// Bohr magneton in eV/T (unit: eV⋅T<sup>-1</sup>)
pub const BOHR_MAGNETON_IN_EV_PER_T: f64 = 5.7883818060e-5f64;
/// Bohr magneton in Hz/T (unit: Hz⋅T<sup>-1</sup>)
pub const BOHR_MAGNETON_IN_HZ_PER_T: f64 = 1.39962449361e10f64;
/// Bohr magneton in inverse meter per tesla (unit: m<sup>-1</sup>⋅T<sup>-1</sup>)
pub const BOHR_MAGNETON_IN_INVERSE_METER_PER_TESLA: f64 = 46.686447783f64;
/// Bohr magneton in K/T (unit: K⋅T<sup>-1</sup>)
pub const BOHR_MAGNETON_IN_K_PER_T: f64 = 0.67171381563f64;
/// Bohr radius (unit: m)
pub const BOHR_RADIUS: f64 = 5.29177210903e-11f64;
/// Boltzmann constant (unit: J⋅K<sup>-1</sup>)
pub const BOLTZMANN_CONSTANT: f64 = 1.380649e-23f64;
/// Boltzmann constant in eV/K (unit: eV⋅K<sup>-1</sup>)
pub const BOLTZMANN_CONSTANT_IN_EV_PER_K: f64 = 8.617333262e-5f64;
/// Boltzmann constant in Hz/K (unit: Hz⋅K<sup>-1</sup>)
pub const BOLTZMANN_CONSTANT_IN_HZ_PER_K: f64 = 2.083661912e10f64;
/// Boltzmann constant in inverse meter per kelvin (unit: m<sup>-1</sup>⋅K<sup>-1</sup>)
pub const BOLTZMANN_CONSTANT_IN_INVERSE_METER_PER_KELVIN: f64 = 69.50348004f64;
/// characteristic impedance of vacuum (unit: ohm)
pub const CHARACTERISTIC_IMPEDANCE_OF_VACUUM: f64 = 376.730313668f64;
/// classical electron radius (unit: m)
pub const CLASSICAL_ELECTRON_RADIUS: f64 = 2.8179403262e-15f64;
/// Compton wavelength (unit: m)
pub const COMPTON_WAVELENGTH: f64 = 2.42631023867e-12f64;
/// conductance quantum (unit: S)
pub const CONDUCTANCE_QUANTUM: f64 = 7.748091729e-5f64;
/// conventional value of ampere-90 (unit: A)
pub const CONVENTIONAL_VALUE_OF_AMPERE_90: f64 = 1.00000008887f64;
/// conventional value of coulomb-90 (unit: C)
pub const CONVENTIONAL_VALUE_OF_COULOMB_90: f64 = 1.00000008887f64;
/// conventional value of farad-90 (unit: F)
pub const CONVENTIONAL_VALUE_OF_FARAD_90: f64 = 0.99999998220f64;
/// conventional value of henry-90 (unit: H)
pub const CONVENTIONAL_VALUE_OF_HENRY_90: f64 = 1.00000001779f64;
/// conventional value of Josephson constant (unit: Hz⋅V<sup>-1</sup>)
pub const CONVENTIONAL_VALUE_OF_JOSEPHSON_CONSTANT: f64 = 483597.9e9f64;
/// conventional value of ohm-90 (unit: ohm)
pub const CONVENTIONAL_VALUE_OF_OHM_90: f64 = 1.00000001779f64;
/// conventional value of volt-90 (unit: V)
pub const CONVENTIONAL_VALUE_OF_VOLT_90: f64 = 1.00000010666f64;
/// conventional value of von Klitzing constant (unit: ohm)
pub const CONVENTIONAL_VALUE_OF_VON_KLITZING_CONSTANT: f64 = 25812.807f64;
/// conventional value of watt-90 (unit: W)
pub const CONVENTIONAL_VALUE_OF_WATT_90: f64 = 1.00000019553f64;
/// Copper x unit (unit: m)
pub const COPPER_X_UNIT: f64 = 1.00207697e-13f64;
/// deuteron-electron mag. mom. ratio (dimensionless)
pub const DEUTERON_ELECTRON_MAG_MOM_RATIO: f64 = -4.664345551e-4f64;
/// deuteron-electron mass ratio (dimensionless)
pub const DEUTERON_ELECTRON_MASS_RATIO: f64 = 3670.48296788f64;
/// deuteron g factor (dimensionless)
pub const DEUTERON_G_FACTOR: f64 = 0.8574382338f64;
/// deuteron mag. mom. (unit: J⋅T<sup>-1</sup>)
pub const DEUTERON_MAG_MOM: f64 = 4.330735094e-27f64;
/// deuteron mag. mom. to Bohr magneton ratio (dimensionless)
pub const DEUTERON_MAG_MOM_TO_BOHR_MAGNETON_RATIO: f64 = 4.669754570e-4f64;
/// deuteron mag. mom. to nuclear magneton ratio (dimensionless)
pub const DEUTERON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO: f64 = 0.8574382338f64;
/// deuteron mass (unit: kg)
pub const DEUTERON_MASS: f64 = 3.3435837724e-27f64;
/// deuteron mass energy equivalent (unit: J)
pub const DEUTERON_MASS_ENERGY_EQUIVALENT: f64 = 3.00506323102e-10f64;
/// deuteron mass energy equivalent in MeV (unit: MeV)
pub const DEUTERON_MASS_ENERGY_EQUIVALENT_IN_MEV: f64 = 1875.61294257f64;
/// deuteron mass in u (unit: u)
pub const DEUTERON_MASS_IN_U: f64 = 2.013553212745f64;
/// deuteron molar mass (unit: kg⋅mol<sup>-1</sup>)
pub const DEUTERON_MOLAR_MASS: f64 = 2.01355321205e-3f64;
/// deuteron-neutron mag. mom. ratio (dimensionless)
pub const DEUTERON_NEUTRON_MAG_MOM_RATIO: f64 = -0.44820653f64;
/// deuteron-proton mag. mom. ratio (dimensionless)
pub const DEUTERON_PROTON_MAG_MOM_RATIO: f64 = 0.30701220939f64;
/// deuteron-proton mass ratio (dimensionless)
pub const DEUTERON_PROTON_MASS_RATIO: f64 = 1.99900750139f64;
/// deuteron relative atomic mass (dimensionless)
pub const DEUTERON_RELATIVE_ATOMIC_MASS: f64 = 2.013553212745f64;
/// deuteron rms charge radius (unit: m)
pub const DEUTERON_RMS_CHARGE_RADIUS: f64 = 2.12799e-15f64;
/// electron charge to mass quotient (unit: C⋅kg<sup>-1</sup>)
pub const ELECTRON_CHARGE_TO_MASS_QUOTIENT: f64 = -1.75882001076e11f64;
/// electron-deuteron mag. mom. ratio (dimensionless)
pub const ELECTRON_DEUTERON_MAG_MOM_RATIO: f64 = -2143.9234915f64;
/// electron-deuteron mass ratio (dimensionless)
pub const ELECTRON_DEUTERON_MASS_RATIO: f64 = 2.724437107462e-4f64;
/// electron g factor (dimensionless)
pub const ELECTRON_G_FACTOR: f64 = -2.00231930436256f64;
/// electron gyromag. ratio (unit: s<sup>-1</sup>⋅T<sup>-1</sup>)
pub const ELECTRON_GYROMAG_RATIO: f64 = 1.76085963023e11f64;
/// electron gyromag. ratio in MHz/T (unit: MHz⋅T<sup>-1</sup>)
pub const ELECTRON_GYROMAG_RATIO_IN_MHZ_PER_T: f64 = 28024.9514242f64;
/// electron-helion mass ratio (dimensionless)
pub const ELECTRON_HELION_MASS_RATIO: f64 = 1.819543074573e-4f64;
/// electron mag. mom. (unit: J⋅T<sup>-1</sup>)
pub const ELECTRON_MAG_MOM: f64 = -9.2847647043e-24f64;
/// electron mag. mom. anomaly (dimensionless)
pub const ELECTRON_MAG_MOM_ANOMALY: f64 = 1.15965218128e-3f64;
/// electron mag. mom. to Bohr magneton ratio (dimensionless)
pub const ELECTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO: f64 = -1.00115965218128f64;
/// electron mag. mom. to nuclear magneton ratio (dimensionless)
pub const ELECTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO: f64 = -1838.28197188f64;
/// electron mass (unit: kg)
pub const ELECTRON_MASS: f64 = 9.1093837015e-31f64;
/// electron mass energy equivalent (unit: J)
pub const ELECTRON_MASS_ENERGY_EQUIVALENT: f64 = 8.1871057769e-14f64;
/// electron mass energy equivalent in MeV (unit: MeV)
pub const ELECTRON_MASS_ENERGY_EQUIVALENT_IN_MEV: f64 = 0.51099895000f64;
/// electron mass in u (unit: u)
pub const ELECTRON_MASS_IN_U: f64 = 5.48579909065e-4f64;
/// electron molar mass (unit: kg⋅mol<sup>-1</sup>)
pub const ELECTRON_MOLAR_MASS: f64 = 5.4857990888e-7f64;
/// electron-muon mag. mom. ratio (dimensionless)
pub const ELECTRON_MUON_MAG_MOM_RATIO: f64 = 206.7669883f64;
/// electron-muon mass ratio (dimensionless)
pub const ELECTRON_MUON_MASS_RATIO: f64 = 4.83633169e-3f64;
/// electron-neutron mag. mom. ratio (dimensionless)
pub const ELECTRON_NEUTRON_MAG_MOM_RATIO: f64 = 960.92050f64;
/// electron-neutron mass ratio (dimensionless)
pub const ELECTRON_NEUTRON_MASS_RATIO: f64 = 5.4386734424e-4f64;
/// electron-proton mag. mom. ratio (dimensionless)
pub const ELECTRON_PROTON_MAG_MOM_RATIO: f64 = -658.21068789f64;
/// electron-proton mass ratio (dimensionless)
pub const ELECTRON_PROTON_MASS_RATIO: f64 = 5.44617021487e-4f64;
/// electron relative atomic mass (dimensionless)
pub const ELECTRON_RELATIVE_ATOMIC_MASS: f64 = 5.48579909065e-4f64;
/// electron-tau mass ratio (dimensionless)
pub const ELECTRON_TAU_MASS_RATIO: f64 = 2.87585e-4f64;
/// electron to alpha particle mass ratio (dimensionless)
pub const ELECTRON_TO_ALPHA_PARTICLE_MASS_RATIO: f64 = 1.370933554787e-4f64;
/// electron to shielded helion mag. mom. ratio (dimensionless)
pub const ELECTRON_TO_SHIELDED_HELION_MAG_MOM_RATIO: f64 = 864.058257f64;
/// electron to shielded proton mag. mom. ratio (dimensionless)
pub const ELECTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO: f64 = -658.2275971f64;
/// electron-triton mass ratio (dimensionless)
pub const ELECTRON_TRITON_MASS_RATIO: f64 = 1.819200062251e-4f64;
/// electron volt (unit: J)
pub const ELECTRON_VOLT: f64 = 1.602176634e-19f64;
/// electron volt-atomic mass unit relationship (unit: u)
pub const ELECTRON_VOLT_ATOMIC_MASS_UNIT_RELATIONSHIP: f64 = 1.07354410233e-9f64;
/// electron volt-hartree relationship (unit: E_h)
pub const ELECTRON_VOLT_HARTREE_RELATIONSHIP: f64 = 3.6749322175655e-2f64;
/// electron volt-hertz relationship (unit: Hz)
pub const ELECTRON_VOLT_HERTZ_RELATIONSHIP: f64 = 2.417989242e14f64;
/// electron volt-inverse meter relationship (unit: m<sup>-1</sup>)
pub const ELECTRON_VOLT_INVERSE_METER_RELATIONSHIP: f64 = 8.065543937e5f64;
/// electron volt-joule relationship (unit: J)
pub const ELECTRON_VOLT_JOULE_RELATIONSHIP: f64 = 1.602176634e-19f64;
/// electron volt-kelvin relationship (unit: K)
pub const ELECTRON_VOLT_KELVIN_RELATIONSHIP: f64 = 1.160451812e4f64;
/// electron volt-kilogram relationship (unit: kg)
pub const ELECTRON_VOLT_KILOGRAM_RELATIONSHIP: f64 = 1.782661921e-36f64;
/// elementary charge (unit: C)
pub const ELEMENTARY_CHARGE: f64 = 1.602176634e-19f64;
/// elementary charge over h-bar (unit: A⋅J<sup>-1</sup>)
pub const ELEMENTARY_CHARGE_OVER_H_BAR: f64 = 1.519267447e15f64;
/// Faraday constant (unit: C⋅mol<sup>-1</sup>)
pub const FARADAY_CONSTANT: f64 = 96485.33212f64;
/// Fermi coupling constant (unit: GeV<sup>-2</sup>)
pub const FERMI_COUPLING_CONSTANT: f64 = 1.1663787e-5f64;
/// fine-structure constant (dimensionless)
pub const FINE_STRUCTURE_CONSTANT: f64 = 7.2973525693e-3f64;
/// first radiation constant (unit: W⋅m<sup>2</sup>)
pub const FIRST_RADIATION_CONSTANT: f64 = 3.741771852e-16f64;
/// first radiation constant for spectral radiance (unit: W⋅m<sup>2</sup>⋅sr<sup>-1</sup>)
pub const FIRST_RADIATION_CONSTANT_FOR_SPECTRAL_RADIANCE: f64 = 1.191042972e-16f64;
/// hartree-atomic mass unit relationship (unit: u)
pub const HARTREE_ATOMIC_MASS_UNIT_RELATIONSHIP: f64 = 2.92126232205e-8f64;
/// hartree-electron volt relationship (unit: eV)
pub const HARTREE_ELECTRON_VOLT_RELATIONSHIP: f64 = 27.211386245988f64;
/// Hartree energy (unit: J)
pub const HARTREE_ENERGY: f64 = 4.3597447222071e-18f64;
/// Hartree energy in eV (unit: eV)
pub const HARTREE_ENERGY_IN_EV: f64 = 27.211386245988f64;
/// hartree-hertz relationship (unit: Hz)
pub const HARTREE_HERTZ_RELATIONSHIP: f64 = 6.579683920502e15f64;
/// hartree-inverse meter relationship (unit: m<sup>-1</sup>)
pub const HARTREE_INVERSE_METER_RELATIONSHIP: f64 = 2.1947463136320e7f64;
/// hartree-joule relationship (unit: J)
pub const HARTREE_JOULE_RELATIONSHIP: f64 = 4.3597447222071e-18f64;
/// hartree-kelvin relationship (unit: K)
pub const HARTREE_KELVIN_RELATIONSHIP: f64 = 3.1577502480407e5f64;
/// hartree-kilogram relationship (unit: kg)
pub const HARTREE_KILOGRAM_RELATIONSHIP: f64 = 4.8508702095432e-35f64;
/// helion-electron mass ratio (dimensionless)
pub const HELION_ELECTRON_MASS_RATIO: f64 = 5495.88528007f64;
/// helion g factor (dimensionless)
pub const HELION_G_FACTOR: f64 = -4.255250615f64;
/// helion mag. mom. (unit: J⋅T<sup>-1</sup>)
pub const HELION_MAG_MOM: f64 = -1.074617532e-26f64;
/// helion mag. mom. to Bohr magneton ratio (dimensionless)
pub const HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO: f64 = -1.158740958e-3f64;
/// helion mag. mom. to nuclear magneton ratio (dimensionless)
pub const HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO: f64 = -2.127625307f64;
/// helion mass (unit: kg)
pub const HELION_MASS: f64 = 5.0064127796e-27f64;
/// helion mass energy equivalent (unit: J)
pub const HELION_MASS_ENERGY_EQUIVALENT: f64 = 4.4995394125e-10f64;
/// helion mass energy equivalent in MeV (unit: MeV)
pub const HELION_MASS_ENERGY_EQUIVALENT_IN_MEV: f64 = 2808.39160743f64;
/// helion mass in u (unit: u)
pub const HELION_MASS_IN_U: f64 = 3.014932247175f64;
/// helion molar mass (unit: kg⋅mol<sup>-1</sup>)
pub const HELION_MOLAR_MASS: f64 = 3.01493224613e-3f64;
/// helion-proton mass ratio (dimensionless)
pub const HELION_PROTON_MASS_RATIO: f64 = 2.99315267167f64;
/// helion relative atomic mass (dimensionless)
pub const HELION_RELATIVE_ATOMIC_MASS: f64 = 3.014932247175f64;
/// helion shielding shift (dimensionless)
pub const HELION_SHIELDING_SHIFT: f64 = 5.996743e-5f64;
/// hertz-atomic mass unit relationship (unit: u)
pub const HERTZ_ATOMIC_MASS_UNIT_RELATIONSHIP: f64 = 4.4398216652e-24f64;
/// hertz-electron volt relationship (unit: eV)
pub const HERTZ_ELECTRON_VOLT_RELATIONSHIP: f64 = 4.135667696e-15f64;
/// hertz-hartree relationship (unit: E_h)
pub const HERTZ_HARTREE_RELATIONSHIP: f64 = 1.5198298460570e-16f64;
/// hertz-inverse meter relationship (unit: m<sup>-1</sup>)
pub const HERTZ_INVERSE_METER_RELATIONSHIP: f64 = 3.335640951e-9f64;
/// hertz-joule relationship (unit: J)
pub const HERTZ_JOULE_RELATIONSHIP: f64 = 6.62607015e-34f64;
/// hertz-kelvin relationship (unit: K)
pub const HERTZ_KELVIN_RELATIONSHIP: f64 = 4.799243073e-11f64;
/// hertz-kilogram relationship (unit: kg)
pub const HERTZ_KILOGRAM_RELATIONSHIP: f64 = 7.372497323e-51f64;
/// hyperfine transition frequency of Cs-133 (unit: Hz)
pub const HYPERFINE_TRANSITION_FREQUENCY_OF_CS_133: f64 = 9192631770f64;
/// inverse fine-structure constant (dimensionless)
pub const INVERSE_FINE_STRUCTURE_CONSTANT: f64 = 137.035999084f64;
/// inverse meter-atomic mass unit relationship (unit: u)
pub const INVERSE_METER_ATOMIC_MASS_UNIT_RELATIONSHIP: f64 = 1.33102505010e-15f64;
/// inverse meter-electron volt relationship (unit: eV)
pub const INVERSE_METER_ELECTRON_VOLT_RELATIONSHIP: f64 = 1.239841984e-6f64;
/// inverse meter-hartree relationship (unit: E_h)
pub const INVERSE_METER_HARTREE_RELATIONSHIP: f64 = 4.5563352529120e-8f64;
/// inverse meter-hertz relationship (unit: Hz)
pub const INVERSE_METER_HERTZ_RELATIONSHIP: f64 = 299792458f64;
/// inverse meter-joule relationship (unit: J)
pub const INVERSE_METER_JOULE_RELATIONSHIP: f64 = 1.986445857e-25f64;
/// inverse meter-kelvin relationship (unit: K)
pub const INVERSE_METER_KELVIN_RELATIONSHIP: f64 = 1.438776877e-2f64;
/// inverse meter-kilogram relationship (unit: kg)
pub const INVERSE_METER_KILOGRAM_RELATIONSHIP: f64 = 2.210219094e-42f64;
/// inverse of conductance quantum (unit: ohm)
pub const INVERSE_OF_CONDUCTANCE_QUANTUM: f64 = 12906.40372f64;
/// Josephson constant (unit: Hz⋅V<sup>-1</sup>)
pub const JOSEPHSON_CONSTANT: f64 = 483597.8484e9f64;
/// joule-atomic mass unit relationship (unit: u)
pub const JOULE_ATOMIC_MASS_UNIT_RELATIONSHIP: f64 = 6.7005352565e9f64;
/// joule-electron volt relationship (unit: eV)
pub const JOULE_ELECTRON_VOLT_RELATIONSHIP: f64 = 6.241509074e18f64;
/// joule-hartree relationship (unit: E_h)
pub const JOULE_HARTREE_RELATIONSHIP: f64 = 2.2937122783963e17f64;
/// joule-hertz relationship (unit: Hz)
pub const JOULE_HERTZ_RELATIONSHIP: f64 = 1.509190179e33f64;
/// joule-inverse meter relationship (unit: m<sup>-1</sup>)
pub const JOULE_INVERSE_METER_RELATIONSHIP: f64 = 5.034116567e24f64;
/// joule-kelvin relationship (unit: K)
pub const JOULE_KELVIN_RELATIONSHIP: f64 = 7.242970516e22f64;
/// joule-kilogram relationship (unit: kg)
pub const JOULE_KILOGRAM_RELATIONSHIP: f64 = 1.112650056e-17f64;
/// kelvin-atomic mass unit relationship (unit: u)
pub const KELVIN_ATOMIC_MASS_UNIT_RELATIONSHIP: f64 = 9.2510873014e-14f64;
/// kelvin-electron volt relationship (unit: eV)
pub const KELVIN_ELECTRON_VOLT_RELATIONSHIP: f64 = 8.617333262e-5f64;
/// kelvin-hartree relationship (unit: E_h)
pub const KELVIN_HARTREE_RELATIONSHIP: f64 = 3.1668115634556e-6f64;
/// kelvin-hertz relationship (unit: Hz)
pub const KELVIN_HERTZ_RELATIONSHIP: f64 = 2.083661912e10f64;
/// kelvin-inverse meter relationship (unit: m<sup>-1</sup>)
pub const KELVIN_INVERSE_METER_RELATIONSHIP: f64 = 69.50348004f64;
/// kelvin-joule relationship (unit: J)
pub const KELVIN_JOULE_RELATIONSHIP: f64 = 1.380649e-23f64;
/// kelvin-kilogram relationship (unit: kg)
pub const KELVIN_KILOGRAM_RELATIONSHIP: f64 = 1.536179187e-40f64;
/// kilogram-atomic mass unit relationship (unit: u)
pub const KILOGRAM_ATOMIC_MASS_UNIT_RELATIONSHIP: f64 = 6.0221407621e26f64;
/// kilogram-electron volt relationship (unit: eV)
pub const KILOGRAM_ELECTRON_VOLT_RELATIONSHIP: f64 = 5.609588603e35f64;
/// kilogram-hartree relationship (unit: E_h)
pub const KILOGRAM_HARTREE_RELATIONSHIP: f64 = 2.0614857887409e34f64;
/// kilogram-hertz relationship (unit: Hz)
pub const KILOGRAM_HERTZ_RELATIONSHIP: f64 = 1.356392489e50f64;
/// kilogram-inverse meter relationship (unit: m<sup>-1</sup>)
pub const KILOGRAM_INVERSE_METER_RELATIONSHIP: f64 = 4.524438335e41f64;
/// kilogram-joule relationship (unit: J)
pub const KILOGRAM_JOULE_RELATIONSHIP: f64 = 8.987551787e16f64;
/// kilogram-kelvin relationship (unit: K)
pub const KILOGRAM_KELVIN_RELATIONSHIP: f64 = 6.509657260e39f64;
/// lattice parameter of silicon (unit: m)
pub const LATTICE_PARAMETER_OF_SILICON: f64 = 5.431020511e-10f64;
/// lattice spacing of ideal Si (220) (unit: m)
pub const LATTICE_SPACING_OF_IDEAL_SI_220: f64 = 1.920155716e-10f64;
/// Loschmidt constant (273.15 K, 100 kPa) (unit: m<sup>-3</sup>)
pub const LOSCHMIDT_CONSTANT_27315_K_100_KPA: f64 = 2.651645804e25f64;
/// Loschmidt constant (273.15 K, 101.325 kPa) (unit: m<sup>-3</sup>)
pub const LOSCHMIDT_CONSTANT_27315_K_101325_KPA: f64 = 2.686780111e25f64;
/// luminous efficacy (unit: lm⋅W<sup>-1</sup>)
pub const LUMINOUS_EFFICACY: f64 = 683f64;
/// mag. flux quantum (unit: Wb)
pub const MAG_FLUX_QUANTUM: f64 = 2.067833848e-15f64;
/// molar gas constant (unit: J⋅mol<sup>-1</sup>⋅K<sup>-1</sup>)
pub const MOLAR_GAS_CONSTANT: f64 = 8.314462618f64;
/// molar mass constant (unit: kg⋅mol<sup>-1</sup>)
pub const MOLAR_MASS_CONSTANT: f64 = 0.99999999965e-3f64;
/// molar mass of carbon-12 (unit: kg⋅mol<sup>-1</sup>)
pub const MOLAR_MASS_OF_CARBON_12: f64 = 11.9999999958e-3f64;
/// molar Planck constant (unit: J⋅Hz<sup>-1</sup>⋅mol<sup>-1</sup>)
pub const MOLAR_PLANCK_CONSTANT: f64 = 3.990312712e-10f64;
/// molar volume of ideal gas (273.15 K, 100 kPa) (unit: m<sup>3</sup>⋅mol<sup>-1</sup>)
pub const MOLAR_VOLUME_OF_IDEAL_GAS_27315_K_100_KPA: f64 = 22.71095464e-3f64;
/// molar volume of ideal gas (273.15 K, 101.325 kPa) (unit: m<sup>3</sup>⋅mol<sup>-1</sup>)
pub const MOLAR_VOLUME_OF_IDEAL_GAS_27315_K_101325_KPA: f64 = 22.41396954e-3f64;
/// molar volume of silicon (unit: m<sup>3</sup>⋅mol<sup>-1</sup>)
pub const MOLAR_VOLUME_OF_SILICON: f64 = 1.205883199e-5f64;
/// Molybdenum x unit (unit: m)
pub const MOLYBDENUM_X_UNIT: f64 = 1.00209952e-13f64;
/// muon Compton wavelength (unit: m)
pub const MUON_COMPTON_WAVELENGTH: f64 = 1.173444110e-14f64;
/// muon-electron mass ratio (dimensionless)
pub const MUON_ELECTRON_MASS_RATIO: f64 = 206.7682830f64;
/// muon g factor (dimensionless)
pub const MUON_G_FACTOR: f64 = -2.0023318418f64;
/// muon mag. mom. (unit: J⋅T<sup>-1</sup>)
pub const MUON_MAG_MOM: f64 = -4.49044830e-26f64;
/// muon mag. mom. anomaly (dimensionless)
pub const MUON_MAG_MOM_ANOMALY: f64 = 1.16592089e-3f64;
/// muon mag. mom. to Bohr magneton ratio (dimensionless)
pub const MUON_MAG_MOM_TO_BOHR_MAGNETON_RATIO: f64 = -4.84197047e-3f64;
/// muon mag. mom. to nuclear magneton ratio (dimensionless)
pub const MUON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO: f64 = -8.89059703f64;
/// muon mass (unit: kg)
pub const MUON_MASS: f64 = 1.883531627e-28f64;
/// muon mass energy equivalent (unit: J)
pub const MUON_MASS_ENERGY_EQUIVALENT: f64 = 1.692833804e-11f64;
/// muon mass energy equivalent in MeV (unit: MeV)
pub const MUON_MASS_ENERGY_EQUIVALENT_IN_MEV: f64 = 105.6583755f64;
/// muon mass in u (unit: u)
pub const MUON_MASS_IN_U: f64 = 0.1134289259f64;
/// muon molar mass (unit: kg⋅mol<sup>-1</sup>)
pub const MUON_MOLAR_MASS: f64 = 1.134289259e-4f64;
/// muon-neutron mass ratio (dimensionless)
pub const MUON_NEUTRON_MASS_RATIO: f64 = 0.1124545170f64;
/// muon-proton mag. mom. ratio (dimensionless)
pub const MUON_PROTON_MAG_MOM_RATIO: f64 = -3.183345142f64;
/// muon-proton mass ratio (dimensionless)
pub const MUON_PROTON_MASS_RATIO: f64 = 0.1126095264f64;
/// muon-tau mass ratio (dimensionless)
pub const MUON_TAU_MASS_RATIO: f64 = 5.94635e-2f64;
/// natural unit of action (unit: J⋅s)
pub const NATURAL_UNIT_OF_ACTION: f64 = 1.054571817e-34f64;
/// natural unit of action in eV s (unit: eV⋅s)
pub const NATURAL_UNIT_OF_ACTION_IN_EV_S: f64 = 6.582119569e-16f64;
/// natural unit of energy (unit: J)
pub const NATURAL_UNIT_OF_ENERGY: f64 = 8.1871057769e-14f64;
/// natural unit of energy in MeV (unit: MeV)
pub const NATURAL_UNIT_OF_ENERGY_IN_MEV: f64 = 0.51099895000f64;
/// natural unit of length (unit: m)
pub const NATURAL_UNIT_OF_LENGTH: f64 = 3.8615926796e-13f64;
/// natural unit of mass (unit: kg)
pub const NATURAL_UNIT_OF_MASS: f64 = 9.1093837015e-31f64;
/// natural unit of momentum (unit: kg⋅m⋅s<sup>-1</sup>)
pub const NATURAL_UNIT_OF_MOMENTUM: f64 = 2.73092453075e-22f64;
/// natural unit of momentum in MeV/c (unit: MeV/c)
pub const NATURAL_UNIT_OF_MOMENTUM_IN_MEV_PER_C: f64 = 0.51099895000f64;
/// natural unit of time (unit: s)
pub const NATURAL_UNIT_OF_TIME: f64 = 1.28808866819e-21f64;
/// natural unit of velocity (unit: m⋅s<sup>-1</sup>)
pub const NATURAL_UNIT_OF_VELOCITY: f64 = 299792458f64;
/// neutron Compton wavelength (unit: m)
pub const NEUTRON_COMPTON_WAVELENGTH: f64 = 1.31959090581e-15f64;
/// neutron-electron mag. mom. ratio (dimensionless)
pub const NEUTRON_ELECTRON_MAG_MOM_RATIO: f64 = 1.04066882e-3f64;
/// neutron-electron mass ratio (dimensionless)
pub const NEUTRON_ELECTRON_MASS_RATIO: f64 = 1838.68366173f64;
/// neutron g factor (dimensionless)
pub const NEUTRON_G_FACTOR: f64 = -3.82608545f64;
/// neutron gyromag. ratio (unit: s<sup>-1</sup>⋅T<sup>-1</sup>)
pub const NEUTRON_GYROMAG_RATIO: f64 = 1.83247171e8f64;
/// neutron gyromag. ratio in MHz/T (unit: MHz⋅T<sup>-1</sup>)
pub const NEUTRON_GYROMAG_RATIO_IN_MHZ_PER_T: f64 = 29.1646931f64;
/// neutron mag. mom. (unit: J⋅T<sup>-1</sup>)
pub const NEUTRON_MAG_MOM: f64 = -9.6623651e-27f64;
/// neutron mag. mom. to Bohr magneton ratio (dimensionless)
pub const NEUTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO: f64 = -1.04187563e-3f64;
/// neutron mag. mom. to nuclear magneton ratio (dimensionless)
pub const NEUTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO: f64 = -1.91304273f64;
/// neutron mass (unit: kg)
pub const NEUTRON_MASS: f64 = 1.67492749804e-27f64;
/// neutron mass energy equivalent (unit: J)
pub const NEUTRON_MASS_ENERGY_EQUIVALENT: f64 = 1.50534976287e-10f64;
/// neutron mass energy equivalent in MeV (unit: MeV)
pub const NEUTRON_MASS_ENERGY_EQUIVALENT_IN_MEV: f64 = 939.56542052f64;
/// neutron mass in u (unit: u)
pub const NEUTRON_MASS_IN_U: f64 = 1.00866491595f64;
/// neutron molar mass (unit: kg⋅mol<sup>-1</sup>)
pub const NEUTRON_MOLAR_MASS: f64 = 1.00866491560e-3f64;
/// neutron-muon mass ratio (dimensionless)
pub const NEUTRON_MUON_MASS_RATIO: f64 = 8.89248406f64;
/// neutron-proton mag. mom. ratio (dimensionless)
pub const NEUTRON_PROTON_MAG_MOM_RATIO: f64 = -0.68497934f64;
/// neutron-proton mass difference (unit: kg)
pub const NEUTRON_PROTON_MASS_DIFFERENCE: f64 = 2.30557435e-30f64;
/// neutron-proton mass difference energy equivalent (unit: J)
pub const NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT: f64 = 2.07214689e-13f64;
/// neutron-proton mass difference energy equivalent in MeV (unit: MeV)
pub const NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_IN_MEV: f64 = 1.29333236f64;
/// neutron-proton mass difference in u (unit: u)
pub const NEUTRON_PROTON_MASS_DIFFERENCE_IN_U: f64 = 1.38844933e-3f64;
/// neutron-proton mass ratio (dimensionless)
pub const NEUTRON_PROTON_MASS_RATIO: f64 = 1.00137841931f64;
/// neutron relative atomic mass (dimensionless)
pub const NEUTRON_RELATIVE_ATOMIC_MASS: f64 = 1.00866491595f64;
/// neutron-tau mass ratio (dimensionless)
pub const NEUTRON_TAU_MASS_RATIO: f64 = 0.528779f64;
/// neutron to shielded proton mag. mom. ratio (dimensionless)
pub const NEUTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO: f64 = -0.68499694f64;
/// Newtonian constant of gravitation (unit: m<sup>3</sup>⋅kg<sup>-1</sup>⋅s<sup>-2</sup>)
pub const NEWTONIAN_CONSTANT_OF_GRAVITATION: f64 = 6.67430e-11f64;
/// Newtonian constant of gravitation over h-bar c (unit: (GeV/c<sup>2</sup>)<sup>-2</sup>)
pub const NEWTONIAN_CONSTANT_OF_GRAVITATION_OVER_H_BAR_C: f64 = 6.70883e-39f64;
/// nuclear magneton (unit: J⋅T<sup>-1</sup>)
pub const NUCLEAR_MAGNETON: f64 = 5.0507837461e-27f64;
/// nuclear magneton in eV/T (unit: eV⋅T<sup>-1</sup>)
pub const NUCLEAR_MAGNETON_IN_EV_PER_T: f64 = 3.15245125844e-8f64;
/// nuclear magneton in inverse meter per tesla (unit: m<sup>-1</sup>⋅T<sup>-1</sup>)
pub const NUCLEAR_MAGNETON_IN_INVERSE_METER_PER_TESLA: f64 = 2.54262341353e-2f64;
/// nuclear magneton in K/T (unit: K⋅T<sup>-1</sup>)
pub const NUCLEAR_MAGNETON_IN_K_PER_T: f64 = 3.6582677756e-4f64;
/// nuclear magneton in MHz/T (unit: MHz⋅T<sup>-1</sup>)
pub const NUCLEAR_MAGNETON_IN_MHZ_PER_T: f64 = 7.6225932291f64;
/// Planck constant (unit: J⋅Hz<sup>-1</sup>)
pub const PLANCK_CONSTANT: f64 = 6.62607015e-34f64;
/// Planck constant in eV/Hz (unit: eV⋅Hz<sup>-1</sup>)
pub const PLANCK_CONSTANT_IN_EV_PER_HZ: f64 = 4.135667696e-15f64;
/// Planck length (unit: m)
pub const PLANCK_LENGTH: f64 = 1.616255e-35f64;
/// Planck mass (unit: kg)
pub const PLANCK_MASS: f64 = 2.176434e-8f64;
/// Planck mass energy equivalent in GeV (unit: GeV)
pub const PLANCK_MASS_ENERGY_EQUIVALENT_IN_GEV: f64 = 1.220890e19f64;
/// Planck temperature (unit: K)
pub const PLANCK_TEMPERATURE: f64 = 1.416784e32f64;
/// Planck time (unit: s)
pub const PLANCK_TIME: f64 = 5.391247e-44f64;
/// proton charge to mass quotient (unit: C⋅kg<sup>-1</sup>)
pub const PROTON_CHARGE_TO_MASS_QUOTIENT: f64 = 9.5788331560e7f64;
/// proton Compton wavelength (unit: m)
pub const PROTON_COMPTON_WAVELENGTH: f64 = 1.32140985539e-15f64;
/// proton-electron mass ratio (dimensionless)
pub const PROTON_ELECTRON_MASS_RATIO: f64 = 1836.15267343f64;
/// proton g factor (dimensionless)
pub const PROTON_G_FACTOR: f64 = 5.5856946893f64;
/// proton gyromag. ratio (unit: s<sup>-1</sup>⋅T<sup>-1</sup>)
pub const PROTON_GYROMAG_RATIO: f64 = 2.6752218744e8f64;
/// proton gyromag. ratio in MHz/T (unit: MHz⋅T<sup>-1</sup>)
pub const PROTON_GYROMAG_RATIO_IN_MHZ_PER_T: f64 = 42.577478518f64;
/// proton mag. mom. (unit: J⋅T<sup>-1</sup>)
pub const PROTON_MAG_MOM: f64 = 1.41060679736e-26f64;
/// proton mag. mom. to Bohr magneton ratio (dimensionless)
pub const PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO: f64 = 1.52103220230e-3f64;
/// proton mag. mom. to nuclear magneton ratio (dimensionless)
pub const PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO: f64 = 2.79284734463f64;
/// proton mag. shielding correction (dimensionless)
pub const PROTON_MAG_SHIELDING_CORRECTION: f64 = 2.5689e-5f64;
/// proton mass (unit: kg)
pub const PROTON_MASS: f64 = 1.67262192369e-27f64;
/// proton mass energy equivalent (unit: J)
pub const PROTON_MASS_ENERGY_EQUIVALENT: f64 = 1.50327761598e-10f64;
/// proton mass energy equivalent in MeV (unit: MeV)
pub const PROTON_MASS_ENERGY_EQUIVALENT_IN_MEV: f64 = 938.27208816f64;
/// proton mass in u (unit: u)
pub const PROTON_MASS_IN_U: f64 = 1.007276466621f64;
/// proton molar mass (unit: kg⋅mol<sup>-1</sup>)
pub const PROTON_MOLAR_MASS: f64 = 1.00727646627e-3f64;
/// proton-muon mass ratio (dimensionless)
pub const PROTON_MUON_MASS_RATIO: f64 = 8.88024337f64;
/// proton-neutron mag. mom. ratio (dimensionless)
pub const PROTON_NEUTRON_MAG_MOM_RATIO: f64 = -1.45989805f64;
/// proton-neutron mass ratio (dimensionless)
pub const PROTON_NEUTRON_MASS_RATIO: f64 = 0.99862347812f64;
/// proton relative atomic mass (dimensionless)
pub const PROTON_RELATIVE_ATOMIC_MASS: f64 = 1.007276466621f64;
/// proton rms charge radius (unit: m)
pub const PROTON_RMS_CHARGE_RADIUS: f64 = 8.414e-16f64;
/// proton-tau mass ratio (dimensionless)
pub const PROTON_TAU_MASS_RATIO: f64 = 0.528051f64;
/// quantum of circulation (unit: m<sup>2</sup>⋅s<sup>-1</sup>)
pub const QUANTUM_OF_CIRCULATION: f64 = 3.6369475516e-4f64;
/// quantum of circulation times 2 (unit: m<sup>2</sup>⋅s<sup>-1</sup>)
pub const QUANTUM_OF_CIRCULATION_TIMES_2: f64 = 7.2738951032e-4f64;
/// reduced Compton wavelength (unit: m)
pub const REDUCED_COMPTON_WAVELENGTH: f64 = 3.8615926796e-13f64;
/// reduced muon Compton wavelength (unit: m)
pub const REDUCED_MUON_COMPTON_WAVELENGTH: f64 = 1.867594306e-15f64;
/// reduced neutron Compton wavelength (unit: m)
pub const REDUCED_NEUTRON_COMPTON_WAVELENGTH: f64 = 2.1001941552e-16f64;
/// reduced Planck constant (unit: J⋅s)
pub const REDUCED_PLANCK_CONSTANT: f64 = 1.054571817e-34f64;
/// reduced Planck constant in eV s (unit: eV⋅s)
pub const REDUCED_PLANCK_CONSTANT_IN_EV_S: f64 = 6.582119569e-16f64;
/// reduced Planck constant times c in MeV fm (unit: MeV⋅fm)
pub const REDUCED_PLANCK_CONSTANT_TIMES_C_IN_MEV_FM: f64 = 197.3269804f64;
/// reduced proton Compton wavelength (unit: m)
pub const REDUCED_PROTON_COMPTON_WAVELENGTH: f64 = 2.10308910336e-16f64;
/// reduced tau Compton wavelength (unit: m)
pub const REDUCED_TAU_COMPTON_WAVELENGTH: f64 = 1.110538e-16f64;
/// Rydberg constant (unit: m<sup>-1</sup>)
pub const RYDBERG_CONSTANT: f64 = 10973731.568160f64;
/// Rydberg constant times c in Hz (unit: Hz)
pub const RYDBERG_CONSTANT_TIMES_C_IN_HZ: f64 = 3.2898419602508e15f64;
/// Rydberg constant times hc in eV (unit: eV)
pub const RYDBERG_CONSTANT_TIMES_HC_IN_EV: f64 = 13.605693122994f64;
/// Rydberg constant times hc in J (unit: J)
pub const RYDBERG_CONSTANT_TIMES_HC_IN_J: f64 = 2.1798723611035e-18f64;
/// Sackur-Tetrode constant (1 K, 100 kPa) (dimensionless)
pub const SACKUR_TETRODE_CONSTANT_1_K_100_KPA: f64 = -1.15170753706f64;
/// Sackur-Tetrode constant (1 K, 101.325 kPa) (dimensionless)
pub const SACKUR_TETRODE_CONSTANT_1_K_101325_KPA: f64 = -1.16487052358f64;
/// second radiation constant (unit: m⋅K)
pub const SECOND_RADIATION_CONSTANT: f64 = 1.438776877e-2f64;
/// shielded helion gyromag. ratio (unit: s<sup>-1</sup>⋅T<sup>-1</sup>)
pub const SHIELDED_HELION_GYROMAG_RATIO: f64 = 2.037894569e8f64;
/// shielded helion gyromag. ratio in MHz/T (unit: MHz⋅T<sup>-1</sup>)
pub const SHIELDED_HELION_GYROMAG_RATIO_IN_MHZ_PER_T: f64 = 32.43409942f64;
/// shielded helion mag. mom. (unit: J⋅T<sup>-1</sup>)
pub const SHIELDED_HELION_MAG_MOM: f64 = -1.074553090e-26f64;
/// shielded helion mag. mom. to Bohr magneton ratio (dimensionless)
pub const SHIELDED_HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO: f64 = -1.158671471e-3f64;
/// shielded helion mag. mom. to nuclear magneton ratio (dimensionless)
pub const SHIELDED_HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO: f64 = -2.127497719f64;
/// shielded helion to proton mag. mom. ratio (dimensionless)
pub const SHIELDED_HELION_TO_PROTON_MAG_MOM_RATIO: f64 = -0.7617665618f64;
/// shielded helion to shielded proton mag. mom. ratio (dimensionless)
pub const SHIELDED_HELION_TO_SHIELDED_PROTON_MAG_MOM_RATIO: f64 = -0.7617861313f64;
/// shielded proton gyromag. ratio (unit: s<sup>-1</sup>⋅T<sup>-1</sup>)
pub const SHIELDED_PROTON_GYROMAG_RATIO: f64 = 2.675153151e8f64;
/// shielded proton gyromag. ratio in MHz/T (unit: MHz⋅T<sup>-1</sup>)
pub const SHIELDED_PROTON_GYROMAG_RATIO_IN_MHZ_PER_T: f64 = 42.57638474f64;
/// shielded proton mag. mom. (unit: J⋅T<sup>-1</sup>)
pub const SHIELDED_PROTON_MAG_MOM: f64 = 1.410570560e-26f64;
/// shielded proton mag. mom. to Bohr magneton ratio (dimensionless)
pub const SHIELDED_PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO: f64 = 1.520993128e-3f64;
/// shielded proton mag. mom. to nuclear magneton ratio (dimensionless)
pub const SHIELDED_PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO: f64 = 2.792775599f64;
/// shielding difference of d and p in HD (dimensionless)
pub const SHIELDING_DIFFERENCE_OF_D_AND_P_IN_HD: f64 = 2.0200e-8f64;
/// shielding difference of t and p in HT (dimensionless)
pub const SHIELDING_DIFFERENCE_OF_T_AND_P_IN_HT: f64 = 2.4140e-8f64;
/// speed of light in vacuum (unit: m⋅s<sup>-1</sup>)
pub const SPEED_OF_LIGHT_IN_VACUUM: f64 = 299792458f64;
/// standard acceleration of gravity (unit: m⋅s<sup>-2</sup>)
pub const STANDARD_ACCELERATION_OF_GRAVITY: f64 = 9.80665f64;
/// standard atmosphere (unit: Pa)
pub const STANDARD_ATMOSPHERE: f64 = 101325f64;
/// standard-state pressure (unit: Pa)
pub const STANDARD_STATE_PRESSURE: f64 = 100000f64;
/// Stefan-Boltzmann constant (unit: W⋅m<sup>-2</sup>⋅K<sup>-4</sup>)
pub const STEFAN_BOLTZMANN_CONSTANT: f64 = 5.670374419e-8f64;
/// tau Compton wavelength (unit: m)
pub const TAU_COMPTON_WAVELENGTH: f64 = 6.97771e-16f64;
/// tau-electron mass ratio (dimensionless)
pub const TAU_ELECTRON_MASS_RATIO: f64 = 3477.23f64;
/// tau energy equivalent (unit: MeV)
pub const TAU_ENERGY_EQUIVALENT: f64 = 1776.86f64;
/// tau mass (unit: kg)
pub const TAU_MASS: f64 = 3.16754e-27f64;
/// tau mass energy equivalent (unit: J)
pub const TAU_MASS_ENERGY_EQUIVALENT: f64 = 2.84684e-10f64;
/// tau mass in u (unit: u)
pub const TAU_MASS_IN_U: f64 = 1.90754f64;
/// tau molar mass (unit: kg⋅mol<sup>-1</sup>)
pub const TAU_MOLAR_MASS: f64 = 1.90754e-3f64;
/// tau-muon mass ratio (dimensionless)
pub const TAU_MUON_MASS_RATIO: f64 = 16.8170f64;
/// tau-neutron mass ratio (dimensionless)
pub const TAU_NEUTRON_MASS_RATIO: f64 = 1.89115f64;
/// tau-proton mass ratio (dimensionless)
pub const TAU_PROTON_MASS_RATIO: f64 = 1.89376f64;
/// Thomson cross section (unit: m<sup>2</sup>)
pub const THOMSON_CROSS_SECTION: f64 = 6.6524587321e-29f64;
/// triton-electron mass ratio (dimensionless)
pub const TRITON_ELECTRON_MASS_RATIO: f64 = 5496.92153573f64;
/// triton g factor (dimensionless)
pub const TRITON_G_FACTOR: f64 = 5.957924931f64;
/// triton mag. mom. (unit: J⋅T<sup>-1</sup>)
pub const TRITON_MAG_MOM: f64 = 1.5046095202e-26f64;
/// triton mag. mom. to Bohr magneton ratio (dimensionless)
pub const TRITON_MAG_MOM_TO_BOHR_MAGNETON_RATIO: f64 = 1.6223936651e-3f64;
/// triton mag. mom. to nuclear magneton ratio (dimensionless)
pub const TRITON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO: f64 = 2.9789624656f64;
/// triton mass (unit: kg)
pub const TRITON_MASS: f64 = 5.0073567446e-27f64;
/// triton mass energy equivalent (unit: J)
pub const TRITON_MASS_ENERGY_EQUIVALENT: f64 = 4.5003878060e-10f64;
/// triton mass energy equivalent in MeV (unit: MeV)
pub const TRITON_MASS_ENERGY_EQUIVALENT_IN_MEV: f64 = 2808.92113298f64;
/// triton mass in u (unit: u)
pub const TRITON_MASS_IN_U: f64 = 3.01550071621f64;
/// triton molar mass (unit: kg⋅mol<sup>-1</sup>)
pub const TRITON_MOLAR_MASS: f64 = 3.01550071517e-3f64;
/// triton-proton mass ratio (dimensionless)
pub const TRITON_PROTON_MASS_RATIO: f64 = 2.99371703414f64;
/// triton relative atomic mass (dimensionless)
pub const TRITON_RELATIVE_ATOMIC_MASS: f64 = 3.01550071621f64;
/// triton to proton mag. mom. ratio (dimensionless)
pub const TRITON_TO_PROTON_MAG_MOM_RATIO: f64 = 1.0666399191f64;
/// unified atomic mass unit (unit: kg)
pub const UNIFIED_ATOMIC_MASS_UNIT: f64 = 1.66053906660e-27f64;
/// vacuum electric permittivity (unit: F⋅m<sup>-1</sup>)
pub const VACUUM_ELECTRIC_PERMITTIVITY: f64 = 8.8541878128e-12f64;
/// vacuum mag. permeability (unit: N⋅A<sup>-2</sup>)
pub const VACUUM_MAG_PERMEABILITY: f64 = 1.25663706212e-6f64;
/// von Klitzing constant (unit: ohm)
pub const VON_KLITZING_CONSTANT: f64 = 25812.80745f64;
/// weak mixing angle (dimensionless)
pub const WEAK_MIXING_ANGLE: f64 = 0.22290f64;
/// Wien frequency displacement law constant (unit: Hz⋅K<sup>-1</sup>)
pub const WIEN_FREQUENCY_DISPLACEMENT_LAW_CONSTANT: f64 = 5.878925757e10f64;
/// Wien wavelength displacement law constant (unit: m⋅K)
pub const WIEN_WAVELENGTH_DISPLACEMENT_LAW_CONSTANT: f64 = 2.897771955e-3f64;
/// W to Z mass ratio (dimensionless)
pub const W_TO_Z_MASS_RATIO: f64 = 0.88153f64;