B - magnetic induction,           1 G = 10-4 T
H - magnetic field strength,     1 Oe = 80 A/m
B = μH,  μ - permeability

 e = 4.803 10-10 CGSq
 ħ = 1.055 10-27 erg s
 c = 2.998 1010 cm s-1
 k_B = 1.3807 10-16 erg K-1
 N_A = 6.022 1023 mol-1
 μ_B = 9.274 10-21 erg G-1
 μ_N = 5.051 10-24 erg G-1
 m_p = 1.673 10-24 g
 m_e = 9.109 10-28 g