Appendix 9: Physical Constants
Devendra K. Misra · 2004
Permittivity of free space, ε 0 8.8542 × 10 -12 F/m Permeability of free space, µ 0 4π × 10 -7 H/m Impedance of free space, η 0 376.7 Velocity of light in free space, c 2.997925 × 10 8 m/s Charge of electron, q e 1.60210 × 10 -19 C Mass of electron, m e 9.1091 × 10 -31 kg Boltzmann's constant, k 1.38 × 10 -23 J/K Planck's constant, h 6.