Abstract
HITHERTO, when observations have been made of the lines visible in the sun's chromosphere, by means of the method introduced by Janssen and myself in 1868, the idea has been that we witness in solar storms the ejection of vapours of metallic elements with which we are familiar from the photosphere.
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Preliminary Note on the Substances which Produce the Chromospheric Lines 1 . Nature 19, 292 (1879). https://doi.org/10.1038/019292a0
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DOI: https://doi.org/10.1038/019292a0