Abstract
WILL you, or one of your spectroscopical contributors, kindly inform me in what respects (if at all) the spectrum of the electric light differs from that of the sun? At a time apparently not far distant from the almost universal application of the electric light, the question I ask is not unimportant, as it, I believe, affects the tolerance of the human eye for other than solar light. It is already well known that much work done by gas-light is by many found prejudicial to their vision, and this may, I presume, be caused by the inherent qualities of the light. It will be interesting to me therefore to learn in what respects electric light and gas-light differ from solar, as shown by spectrum analysis.
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WALTERS, J. Spectrum of the Electric Light. Nature 25, 103 (1881). https://doi.org/10.1038/025103a0
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DOI: https://doi.org/10.1038/025103a0
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