Physical Constants

g0  … Gyromagnetic factor for electrons 2.0023193
h  … Planck’s constant 6.6260755 ×10- 34  Js
ℏ  … Reduced Planck’s constant h∕(2π)
kB  … Boltzmann’s constant 1.380662 × 10- 23  JK-1
q0  … Elementary charge             - 19
1.6021892 ×10  C
me  … Electron rest mass             - 31
9.1093897 ×10  kg
ε
 0  … Dielectric constant 8.8541878 ×10- 12  AsV- 1  m-1
μB  … Bohr magneton 9.2740092 ×10- 24  JT-1