2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48837It is shown that two ways of the description of the 1/2-spin precession in a circularly polarized electromagnetic wave: on the basis of the Bargmann-Michel-Telegdi equation and on the basis of the Dirac equation with Pauli term give the same result in the second order on the wave's field for arbitrary wave length.7 pagesHigh Energy Physics - PhenomenologyClassical Physicstext