Abstract
THE spectrum-analytic method of examining the light from comets has only been applied hitherto to comets of weak light; yet the observations are fitted to extend considerably our knowledge of these objects. The spectra of all the comets that have been examined have consisted of a few bright lines or bands of light, and a very faint continuous spectrum. The chief part of the comet's light appears, accordingly, to be proper to it, and is probably from glowing gas, while the remaining portion is reflected sunlight.
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On the Spectra of Comets * . Nature 9, 193–194 (1874). https://doi.org/10.1038/009193a0
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DOI: https://doi.org/10.1038/009193a0