Abstract
I SEE in the recenty-published number of Science Abstracts, No. 802, that there is every reason to think that the corona line is not represented by any dark line in the solar spectrum. I write to call attention to the way this confirms the suggestion that the corona is an aurora round the sun. In the March number of the Annalen der Physik for this year, p. 462, Herr Cantor describes experiments from which he concludes that there is no absorption corresponding to the emission of light by a gas which is caused to radiate by an electric discharge. He makes certain deductions as to the temperature of the gas which emphasise the difficulty of defining “temperature” in the case of a non-steady state; but, whatever is to be deduced from his observation, it certainly lends weight to the suggestion that the corona is due to an emission of a similar character to that of a gas transmitting an electric discharge.
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FITZGERALD, G. The Nature of the Solar Corona. Nature 62, 7 (1900). https://doi.org/10.1038/062007b0
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DOI: https://doi.org/10.1038/062007b0
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