XVII. Photo-chemical researches.—Part I. Measurement of the chemical action of light
Open Access
- 31 December 1857
- journal article
- Published by The Royal Society in Philosophical Transactions of the Royal Society of London
- Vol. 147, 355-380
- https://doi.org/10.1098/rstl.1857.0018
Abstract
The first and only attempt which has been made to refer the chemical action of light to a standard measure, is to be found in the researches of Draper. The description of the instrument and mode of observation employed by him was published in 1843, in volume xxiii. p. 401 of the ‘London, Edinburgh and Dublin Philosophical Magazine.’ Even with this instrument, which as we shall show is in many respects very defective, Draper has succeeded in establishing experimentally some of the most important relations of the chemical action of light.Keywords
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