Strong Fluctuation Theory for Moist Granular Media

The equations of the bilocal approximation in strong fluctuation theory are shown to require modification when applied to granular media containing particles which are covered by a thin film of water. It is demonstrated that the effect of the film may be accounted for by changing the equation for the random second-rank susceptibility tensor arising in the theory if the particles are not too large compared to a wavelength. An example shows that the manner in which water is distributed in a moist medium has a major influence on the effective dielectric constant of the medium.