Abstract
I. SPECTRUM analysis is now becoming so far-reaching, especially in inquiries having to do with the conditions of the various celestial bodies, that there are many who are anxious to know something of its teachings. To some of these, however, the terms used by men of science, a very necessary shorthand, are unfamiliar and appear hard to understand, because the opportunity of seeing the things they are intended to define, and which they generally do define in most admirable fashion, has never presented itself. I propose, therefore, to attempt to show that there is nothing recondite about these terms; that it is possible without any expensive apparatus for every one, who will take a little trouble, to observe the phenomena for himself, after which the meanings of the terms employed will present no difficulty whatever.
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LOCKYER, N. A Simple Spectroscope and its Teachings. Nature 59, 371–373 (1899). https://doi.org/10.1038/059371a0
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DOI: https://doi.org/10.1038/059371a0