Abstract
IN the course of experiments on the tracks on photographic plates due to protons set in motion by neutrons, we have made some observations of more general interest. We found that the rows of silver grains marking the tracks of swift particles only appeared after development when the plate had been treated with pinacryptol-yellow or some similar substance and when the exposure to the particles was carried out in air at reduced pressure or in nitrogen. We therefore investigated the effect of light on photographic emulsions similarly treated and exposed in air at different pressures or in different gases. Our results may be summarised thus:
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Z. wiss. Phot., 24; 1926.
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BLAU, M., WAMBACHER, H. Photographic Desensitisers and Oxygen. Nature 134, 538 (1934). https://doi.org/10.1038/134538a0
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DOI: https://doi.org/10.1038/134538a0
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