Abstract

Earlier attempts of various investigators to increase the sensitivity of photographic emulsions by addition of colloidal silver, silver sulfide, or gold are reviewed. Koslowsky’s discovery of the effect of certain gold complex salts as powerful sensitizers is described and a possible mechanism of the effect discussed. The importance of this effect for the manufacture of modern high speed and fine grain film as well as special x-ray emulsions is indicated.

© 1949 Optical Society of America

Dependence of the Sensitivity of Unsensitized Photographic Emulsions upon Temperature*

Martin Biltz
J. Opt. Soc. Am. 39(12) 994-1008 (1949)

Gold Sensitization of X-Ray Films*

Herman Hoerlin and F. W. H. Mueller
J. Opt. Soc. Am. 40(4) 246-251 (1950)

The Photographic Action of X-Rays in the 1.3 to 0.01A Range*

Herman Hoerlin
J. Opt. Soc. Am. 39(11) 891-897 (1949)

Sulfur Sensitization and High-Intensity Reciprocity Failure of Silver Bromide Grains*

H. E. Spencer and R. E. Atwell
J. Opt. Soc. Am. 54(4) 498-505 (1964)

Distributions of Development Centers in Reduction-Sensitized Silver Bromide Grains

H. E. Spencer, L. E. Brady, and J. F. Hamilton
J. Opt. Soc. Am. 57(8) 1020-1024 (1967)