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Library - constants

constants is a library which defines physical constants in SI units (meter, kilogram, second, ampere, kelvin, candela, mole).

The following statement makes available constants defined in constants:

use constants;

The following constants are defined:

NameValueUnit
avogadro_number6.0221367e231/mole
boltzmann_constant1.380658e-23J/K
earth_mass5.97370e24kg
earth_radius6.378140e6m
electron_charge1.60217733e-19C
electron_mass9.1093897e-31kg
faraday_constant9.6485309e4C/mole
gravitational_constant6.672659e-11N m^2/kg^2
gravity_acceleration9.80655m/s^2
hubble_constant3.2e-181/s
ice_point273.15K
induction_constant1.256e-6V s/A m
molar_gaz_constant8.314510J/K mole
molar_volume22.41410e-3m^3/mole
muon_mass1.8835327e-28kg
neutron_mass1.6749286e-27kg
plank_constant6.6260755e-34J s
plank_constant_reduced1.0545727e-34J s
plank_mass2.17671e-8kg
proton_mass1.6726231e-27kg
solar_radius6.9599e8m
speed_of_light299792458m/s
speed_of_sound340.29205m/s
stefan_boltzmann_constant5.67051e-8W/m^2 K^-4
vacuum_permittivity8.854187817e-12A s/V m