Magnitude of magnetogyric ratio of Frequency, cis 1 v 1e electron v Subscript denoting value in 1-c/s inter- 4 1 val = P, ogee/2m= 2n X 3. 5218 X 10 seC (amp/m)-1 Total bandwidth to half-power, cis Vb 0 Dielectric loss angle = arc tan (E" / E') Collision frequency, cis Vc Cyclotron frequency = eBo/2nm Skin depth in a metal = VT2/wp, p, a)m Ve Os o 2 LI v Half-width of spectral line (from centre Plasma frequency= (in) V(N e/mEiJ cis vp 3 to half-power), cis Volume charge density=N e coulombs/m e Relative permittivity = E' - j c" Reflection factor 8 e 2 2 Electric space constant = (P, ct1 a Scattering cross section, m o EO 12 "'" 8. 85416 X 10- farad/m u Conductivity = a' - j a" mhos/m Efficiency Relaxation time T rJ Efficiency of antenna = Ae/A Transmission factor rJA {} Relative temperature, deg K Spin-lattice relaxation time, sec .1 q, ){ Absorption index=ocit/2n Magnetic flux, webers o Wavelength, m Gravitational potential it t1J Wavelength in waveguide, m Susceptibility = X' - j X" Ag X Free-space wavelength, m w Angular frequency = 2n v rad/sec Ao Relative permeability = p, ' - jp," Angular velocity, rad/sec w Jl 2 p, Drift mobility of carriers, m/volt-sec Cyclotron angular frequency we BOHR'S magneton=p, eh/2m P, B o o = e Bo/m rad/sec 29 =1. 16529 X 10- weber-m 0 Subscript denoting d. c., static, or steady I. General principles. a) Electromagnetic radiation."