| Speed
of light |
c |
3.00 x 108 m/s |
| Gravitational constant |
G |
6.67 x 10-11 Nm2 |
| Avogadro constant |
NA |
6.02 x 1023 mol-1 |
| Universal gas constant |
R |
8.31 J/molK |
| Mass-energy
relation |
c2 |
8.99 x 1016 J/kg
931.5 MeV/u |
| Permittivity constant |
e0 |
8.85 x 10-12 F/m |
| Permeability constant |
m0 |
1.26 x 10-6 H/m |
| Planck constant |
h |
6.63 x 10-34 J![]() s |
| Boltzmann constant |
k |
1.38 x 10-23 J/K
8.62 x 10-5 eV/K |
| Elementary charge |
e |
1.60 x 10-19 C |
| Electron mass |
me |
9.11 x 10-31 kg
5.49 x 10-4 u |
| Proton mass |
mp |
1.67 x 10-27 kg
1.0073 u |
| Bohr radius |
rB |
5.29 x 10-11 m |
| Bohr magneton |
mB |
9.27 x 10-24 J/T
5.79 x 10-5 eV/T |
| Nuclear magneton |
mN |
5.05 x 10-27 J/T |
| Ratio of proton mass to electron
mass |
mp/me |
1840 |
| Rydberg constant |
R |
1.10 x 107 m-1 |
| Electron magnetic moment |
me |
9.28 x 10-24 J/T |
| Proton magnetic moment |
mp |
1.41 x 10-26 J/T |
Astronomy
