| Constant | Symbol | Value | Unit |
|---|---|---|---|
| Speed of light in vacuum | c0 | 299 792 458 | m/ s |
| Planck constant | h | 6.626 070 15 x10-34 | J s |
| Vacuum electric permittiity | ε0 | 8.854 187 812 8 x10-12 | F m |
| Vacuum magnetic permeability | μ0 | 1.256 637 062 12 x10-6 | N A |
| Impedance of vacuum | Z0 | 376.730 313 669 | Ω |
| Elementary charge | e | 1.602 176 634 x10-19 | C |
| Avogadro constant | NA | 6.022 141 x1023 | 1/ mol |
| Boltzmann constant | kB | 1.380 649 x10-23 | J/ K |