Abstract
IN spectrophotograms of the auroral spectrum taken on October 18, L. Vegard has observed great enhancement of two lines coinciding with the two well-known lines of the hydrogen spectrum. This indicates the occasional presence of considerable quantities of hydrogen in the auroral region, which are due possibly to ‘hydrogen showers’ from the sun.
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Points from Foregoing Letters. Nature 144, 1094 (1939). https://doi.org/10.1038/1441094a0
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DOI: https://doi.org/10.1038/1441094a0