IX. On a failure of the law in photography that when the products of the intensity of the light acting and of the time of exposure are equal, equal amounts of chemical action will be produced
- 31 December 1894
- journal article
- Published by The Royal Society in Proceedings of the Royal Society of London
- Vol. 54 (326-330), 143-147
- https://doi.org/10.1098/rspl.1893.0060