where ω ω is the angular frequency, and B is the magnitude of the applied magnetic field. γ γ is the gyromagnetic ratio for a particle of charge − − e , equal to − − e g 2 m , where m is the mass of the precessing system, while g is the g -factor of the system. The g -factor is the unit-less proportionality factor relating the system's angular momentum to the intrinsic magnetic moment; in classical physics it is 1 for any rigid object in which the charge and mass density are identically distributed. The Larmor frequency is independent of the angle between J → → and B → → .