| Plank's Constant | h = 6.6260755 x 10-34 J s |
|---|---|
h-bar (h/2*pi) = 1.05457266 x 10-34 J s | |
| Boltzmann's Constant | kB = 1.380658 x 10-23 J/K |
| Electron Charge | e = 1.60217733 x 10-19 C |
| Avogadro's Number | NA = 6.0221367 x 1023 particles/mole |
| Speed of Light | c = 2.99792458 x 108 m/s |
| Permeability of Free Space | mu0 = 4*pi x 10-7 |
mu0 = 12.566370614 x 10-7 T2 m3 / J | |
| Permittivity of Free Space | epsilon0 = 1 / mu0*c2 |
epsilon0 = 8.854187817 x 10-12 C2 / J m | |
| Fine Structure Constant | 1/alpha = 137.0359895 |
| Electron Rest Mass | me = 9.1093897 x 10-31 kg |
me = 0.511 MeV/c2 | |
| Proton Rest Mass | mp = 1.6726231 x 10-27 kg |
mp = 938.26 MeV/c2 | |
| Neutron Rest Mass | mn = 1.6749286 x 10-27 kg |
mn = 939.55 MeV/c2 | |
| Atomic Mass Unit | u = 1.66057 x 10-27 kg |
u = 931.43 MeV/c2 | |
| Bohr Radius | a0 = 5.29177 x 10-11 m |
| Electron Radius | re = 2.81792 x 10-15 m |
| Gas Constant | R = 8.3143 m2 kg / s2 K mol |
| Molar Volume | Vmol = 22.41383 m3/kmol |
| Gravitational Constant | G = 6.6732 x 10-11 m3 / kg s2 |
| Acceleration due to gravity | g = 9.81 m / s2 |
| Compton Electron Wavelength | lambdac = h / me c |
lambdac = 2.42631 x 10-12 m |
(Table adapted from a table by Burkhard Kirste)
More, and more standard, constants may be found here
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