Abstract
Using equations developed in a previous paper the properties of surface layers in silver halide crystals have been studied by measuring their low‐frequency dielectric constant. It was found that the subsurface space charge depends strongly upon the nature of the material in contact with the crystal surface. Experimental results on the variations of the dielectric constant measured at 1 kcycle/sec as a function of an applied voltage are also reported and a model for the interpretation of these results is provided.