Abstract

The rebromination theory of photographic solarization attributes this phenomenon to the latent-image silver being attacked by photolytically formed bromine during great overexposure. With the purpose of testing the validity of this theory, a series of experiments was carried out on a photographic emulsion showing strong solarization. These experiments consisted of exposures at different temperatures over the range +68°C to −196°C, exposures on emulsions treated with various bromine acceptors, tests on emulsions which had been exposed and then treated with silver halide solvents, comparison tests of solarization with physical and chemical development, and experiments with different intensities of exposing radiation. All the experimental results fit in with the rebromination theory of solarization.

© 1940 Optical Society of America

Solarization at Low Intensity

A. J. Reardon and H. P. Griggs
J. Opt. Soc. Am. 24(12) 331-338 (1934)

Latent-Image Distribution*

W. F. Berg, A. Marriage, and G. W. W. Stevens
J. Opt. Soc. Am. 31(5) 385-394 (1941)

Study of the Mechanism of Sulfur Sensitization by a Development-Center Technique*

H. E. Spencer, L. E. Brady, and J. F. Hamilton
J. Opt. Soc. Am. 54(4) 492-497 (1964)

Absolute Sensitivity Measurements on Single-Grain-Layer Photographic Plates for Different Wave-Lengths*

J. H. Webb
J. Opt. Soc. Am. 38(4) 312-323 (1948)

Dependence of the Sensitivity of Unsensitized Photographic Emulsions upon Temperature*

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