2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/3579The relations between Einstein's coefficients for spontaneous and induced emission of radiation with account for the natural linewidth are obtained . It is shown that thermal radio emission is stimulated one . Thermal radio emission of non-uniform gas is considered .7 pagesAstrophysicsEinstein's coefficients and the nature of thermal radio emissiontext