- h = 6,626 x 10-37 J.s = 4,136 x 10 -15 eV.s
- ħ = 1,055 x 10-37 J.s = 0,6582 x 10 -15 eV.s
- c = 2,998 x 108 m/s = 2,998 x 10 17 mm/s
- hc = 1,2399 x 103 eV.nm
- e = 1,602 x 10-19 C
- 1/4πε0 = 8,988 x 109 N.m2/cm2
- me = 9,109 x 10-31 Kg = 0,5110 MeV/c2
- mp (≈ mn) = 1,672 x 10-27 Kg = 938,3 MeV/c2
- a0 = 0,529 A
- E1 = -2,17 x 10-18 J = -13,6 eV
- 1 eV = 1,602 x 10 -19 J
- 1 J = 6,242 x 10 18 eV