Abstract
IN the course of the experiments referred to above, as to the nature of the Russell effect, I found that metals (pure mercury and polished speculum metal) placed in contact with a rapid plate submerged under absolute alcohol, and the whole enclosed in an air-tight desiccator over calcium chloride, afforded the photographic marks on subsequent development just as vigorously as if obtained in ordinary moist air. Is not this experiment sufficient to show that Dr. Russell's explanation, which refers these marks to the formation of hydrogen peroxide, cannot be correct? Ought we not rather to seek the explanation in the ionising properties of metals indicated by other observations?
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JOLY, J. Action of Metals on Photographic Plates. Nature 70, 395 (1904). https://doi.org/10.1038/070395e0
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DOI: https://doi.org/10.1038/070395e0
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