Abstract
SOMEWHAT more than half a century ago, while engaged, with the assistance of Faraday, in preparing experiments for a Friday evening discourse in this institution, Stokes observed that the spectrum of the electric light extended to five or six times the length of the visible spectrum when he employed prisms and lenses of quartz instead of glass. This extension occurs at the violet end of the spectrum, and consists of rays of high refrangibility, to which the eye is insensitive, but which can be made apparent by means of a fluorescent screen.
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The Spectroscope in Organic Chemistry 1 . Nature 91, 254–258 (1913). https://doi.org/10.1038/091254a0
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DOI: https://doi.org/10.1038/091254a0