Letter | Published:

Intensification of the Photographic Image

Naturevolume 180page1275 (1957) | Download Citation



THE overall quantum yield for the production of developable silver in the silver halide grains of a fast photographic emulsion struck by light is of the order of 109. I have found that the catalytic effect of the exposed silver halide grain can be increased by a factor of one million by utilizing the amplification available in chain polymerizations.

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  1. 1

    Michaelis, M., Chem. Rev., 16, 243 (1935). Michaelis, M., and Granick, S., J. Amer. Chem. Soc., 65, 1747 (1943).

  2. 2

    LuValle, J. E., Glass, D. B., and Weissberger, A., J. Amer. Chem. Soc., 70, 2223 (1948).

  3. 3

    Kharasch, M. S., Kawahara, F., and Nudenberg, W., J. Org. Chem. 19, 1977 (1954).

  4. 4

    See, for example, Oster, G., Chem. Rev., 43, 319 (1948).

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  1. Polymer Research institute, Polytechnic Institute of Brooklyn, Brooklyn, New York



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