Abstract
THE use of selenium for the automatic registry of star transits, proposed by me in a letter which you were good enough to publish in NATURE, vol. xxiii. p. 218, leads to the idea of applying it in a somewhat similar way for photometric purposes, in order to improve the existing scale of star magnitudes, and to watch any variations therein.
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C., W. Selenium. Nature 23, 412 (1881). https://doi.org/10.1038/023412a0
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DOI: https://doi.org/10.1038/023412a0
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