  A dielectric medium consisting of roughly polarized molecules is treated as a
3D disordered spin system (spin glass). A microscopic approach for the study of
statistical properties of this system on micrometer space scale and nanosecond
time scale of standing electromagnetic wave is developed. Using ergodic
hypothesis the initial 3D spin problem is reduced to two separate 1D problems
along external field propagation. The first problem describes the disordered
spin chain system while the second one describes a disordered N-particle
quantum system with relaxation in the framework of Langevin-Schroedinger
(L-Sch) type equation. Statistical properties of both systems are investigated
in detail. Basing on these constructions, the coefficient of polarizability,
related to collective orientational effects, is calculated. Clausius-Mossotti
formula for dielectric constant is generalized. For dielectric permittivity
function generalized equation is found taking into account Clausius-Mossotti
generalized formula.
