Abstract
IN his interesting address on spectroscopic methods, Prof. Michelson falls into a not uncommon error when he says that, in order to obtain a pure spectrum, “two important modifications must be made in Newton's arrangement. First, the light must be allowed to pass through a very narrow aperture, and, secondly, a sharp image of this aperture must be formed by a lens or mirror.”
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R. Spectroscopic Methods. Nature 88, 377 (1912). https://doi.org/10.1038/088377c0
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DOI: https://doi.org/10.1038/088377c0
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