Abstract
III. THESE last experiments were remarkable in another point of view, as they opened out the question as to whether the salts of silver might not prove sensitive to rays to which they had been supposed hitherto to be insensitive. Silver iodide, for instance, when exposed to the spectrum in a solution of potassium sulphite proved sensitive as far as “a”of the spectrum instead of stopping short at the point indicated in Fig. 2 (p. 529); and silver bromide in the molecular grouping which absorbed the red proved sensitive to a wave-length of somewhere near 11,000, whereas in its normal state 9,600 was its limit.
Article PDF
References
Photographic News, December 5, 1873.
Rights and permissions
About this article
Cite this article
DE WIVELESLIE ABNEY, W. Physics in Photography 1 . Nature 18, 543–546 (1878). https://doi.org/10.1038/018543b0
Issue Date:
DOI: https://doi.org/10.1038/018543b0