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.
No takes yet. Share an insight, caveat, or question.
Bunsen et al. (1857) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: