  In the course of the analysis of the axiomatic principles underlying
statistical physics, the assumption about the limited correctness of the
postulate of equiprobability of all available microstates of a closed system
was tested. Earlier, the result of simulation modeling of the most probable
stationary state of a stochastic isolated system, inside which isotropic
monochrome radiation spontaneously acquired anisotropic polarization, was
obtained (later the presence of such an effect was confirmed by a natural
experiment). This article considers an already practically significant variant
of suchlike a system. The conditions for the appearance of polarization
anisotropy in a thermodynamically equilibrium medium initially filled with
isotropic Planck radiation are predicted. Important consistent pattern of the
applied mathematical model are noted.
