The Photographic Emulsion: After-Ripening (Classic Reprint) - Hardcover

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Excerpt from The Photographic Emulsion: After-Ripening

These relatively coarse-grained negative emulsions are not produced from fine-grained emulsions by ripening, but the grain size is determined by the condi tions of initial precipitation. High concentration of the reactants (agn03 and kbr), low concentration of gelatin, high temperature of mixing, and retarded addition permit the process of recrystallization to take place at once, with the formation of definite, coarse-grained suspensions.

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