Engineering Physics Annotation << Back ON HETEROGENEITY FOURIER’S HEAT CONDUCTIVITY LAW WITH CHARACTERISTIC REGION OF DEPENDENCE TEMPERATURE S.O. GLADKOV Found solution kinetic equation in the rotating coordinate system, provided that the characteristic of spatial heterogeneity region satisfies the condition δx ≥ l, where l – the average free length of a particle (quasiparticle). In this case, the distribution function f(r, t) is found and calculated the coefficient of thermal conductivity of heterogeneous at the condition that the space region of the temperature change is subject to marked above condition δx ≥ l and the simple is rotate. It examines the decision of a problem if on the system are moving of external inhomogeneous acoustic field. It’s shown, that in the particle cases the main formulae are leading to known classical results. Keywords: heterogeneity, free path length, the coefficient of thermal conductivity. DOI: 10.25791/infizik.9.2021.1224 Pp. 03-11.