THE most widely used chemical actinometer for ultraviolet radiation is based on the photochemical decomposition of oxalic acid in solutions of oxalic acid and urany 1 oxalate, and subsequent ...

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This article was originally published with the title “A New Actinometer” inSA Supplements Vol. 19 No. 484supp(April 1885), p. 7727doi:10.1038/scientificamerican04111885-7727csupp ...