On the theory of light scattering in gases
Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation
The history of development of the theory of light
scattering and dispersion in gases is outlined, from the works
of Rayleigh, Planck, and Mandelstam to those of Lorentz and
Einstein. It is shown that of central concern in these studies
was actually the problem of thermal fluctuations in a medium.
A formula for the permittivity ε(ω) taking account of radiation friction forces is derived for the case of an isotropic