Speed of light = 299,792,458 [m/s] ( ~ 2.998 x 108 [m/s])
Planck's constant = 6.626068 x 10-34 [Js]
Electric permittivity in vacuum, 8.8541878176 x 10-12 [F/m]
Magnetic permeability in vacuum, 4pi x 10-7 [H/m]
Electron charge, e = 1.602 176 487 x 10-19 [C]
Electron mass, me = 9.109 382 15 x 10-31 [kg]
Proton mass, mp = 1.672 621 637 x 10 -27 [kg]
Boltzmann constant, k = 1.380 6504 x 10-23 [J/K]
Stefan-Boltzmann constant, 5.670 400 x 10-8 [W m-2 K-4]