Parametric Properties of Photographic Emulsions; Physical Approach

Abstract

Physical origins for construction of the photoemulsion parametric properties are suggested. The represented concept accentuates that any statistical approach to the characteristic curve theory cannot be carried out consistently without due regard for some individual features of emulsion microcrystals. The formula for development probability of the averaged microcrystal is proposed. It is proved that the sensitivity (relative) and the contrast of photoemulsions are strongly determined by the mean number of sensitivity centres per microcrystal (paying attention to the law of microcrystals distribution with respect to the number of centres).