GSL constants

For more information about this constants see the documentation of GSL.

Constant | Description |
---|---|

c | The speed of light in vacuum |

mu0 | The permeability of free space |

e0 | The permittivity of free space |

h | The Planck constant h |

hbar | The reduced Planck constant ℏ |

na | Avogadro's number |

f | The molar charge of 1 Faraday |

k | The Boltzmann constant |

r0 | The molar gas constant |

v0 | The standard gas volume |

sigma | The Stefan–Boltzmann constant |

gauss | The magnetic field of 1 Gauss |

au | The length of 1 astronomical unit (mean earth-sun distance) |

G | The gravitational constant |

ly | The distance of 1 light-year |

pc | The distance of 1 parsec |

gg | The standard gravitational acceleration on Earth |

ms | The mass of the Sun |

ee | The charge of the electron |

eV | The energy of 1 electron volt |

amu | The unified atomic mass |

me | The mass of the electron |

mmu | The mass of the muon |

mp | The mass of the proton |

mn | The mass of the neutron |

alpha | The electromagnetic fine structure constant |

ry | The Rydberg constant |

a0 | The Bohr radius |

a | The length of 1 angstrom |

barn | The area of 1 barn |

muB | The Bohr Magneton |

mun | The Nuclear Magneton |

mue | The magnetic moment of the electron |

mup | The magnetic moment of the proton |

sigmaT | The Thomson cross section for an electron |

pD | The debye |

min | The number of seconds in 1 minute |

h | The number of seconds in 1 hour |

d | The number of seconds in 1 day |

week | The number of seconds in 1 week |

in | The length of 1 inch |

ft | The length of 1 foot |

yard | The length of 1 yard |

mil | The length of 1 mil (1/1000th of an inch) |

v_km_per_h | The speed of 1 kilometer per hour |

v_mile_per_h | The speed of 1 mile per hour |

nmile | The length of 1 nautical mile |

fathom | The length of 1 fathom |

knot | The speed of 1 knot |

pt | The length of 1 printer's point (1/72 inch) |

texpt | The length of 1 TeX point (1/72.27 inch) |

micron | The length of 1 micrometre |

hectare | The area of 1 hectare |

acre | The area of 1 acre |

liter | The volume of 1 liter |

us_gallon | The volume of 1 US gallon |

can_gallon | The volume of 1 Canadian gallon |

uk_gallon | The volume of 1 UK gallon |

quart | The volume of 1 quart |

pint | The volume of 1 pint |

pound | The mass of 1 pound |

ounce | The mass of 1 ounce |

ton | The mass of 1 ton |

mton | The mass of 1 metric ton (1000 kg) |

uk_ton | The mass of 1 UK ton |

troy_ounce | The mass of 1 troy ounce |

carat | The mass of 1 carat |

gram_force | The force of 1 gram weight |

pound_force | The force of 1 pound weight |

kilepound_force | The force of 1 kilopound weight |

poundal | The force of 1 poundal |

cal | The energy of 1 calorie |

btu | The energy of 1 British Thermal Unit |

therm | The energy of 1 Therm |

hp | The power of 1 horsepower |

bar | The pressure of 1 bar |

atm | The pressure of 1 standard atmosphere |

torr | The pressure of 1 torr |

mhg | The pressure of 1 meter of mercury |

inhg | The pressure of 1 inch of mercury |

inh2o | The pressure of 1 inch of water |

psi | The pressure of 1 pound per square inch |

poise | The dynamic viscosity of 1 poise |

stokes | The kinematic viscosity of 1 stokes |

stilb | The luminance of 1 stilb |

lumen | The luminous flux of 1 lumen |

lux | The illuminance of 1 lux |

phot | The illuminance of 1 phot |

ftcandle | The illuminance of 1 footcandle |

lambert | The luminance of 1 lambert |

ftlambert | The luminance of 1 footlambert |

curie | The activity of 1 curie |

roentgen | The exposure of 1 roentgen |

rad | The absorbed dose of 1 rad |

N | The force of 1 newton |

dyne | The force of 1 dyne |

J | The energy of 1 joule |

erg | The energy of 1 erg |