Abstract
IN the latitudes of London, Paris or Washington the appearance of an aurora borealis is somewhat infrequent and finds few investigators prepared with equipment for detailed observation. Most of the work on the location and spectra of aurora has therefore been done at such places as Tromsø, which are within the main auroral belt: our knowledge of the phenomenon is mainly due to Størmer and Vegard, and their collaborators. The principal progress has been achieved in the present century, and especially in the last ten or fifteen years. It hasr only been rendered possible by the rapid general advances in physical techniques and equipment.
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CHAPMAN, S., BATES, D. The Radiations from the Earth's Atmosphere. Nature 160, 250–251 (1947). https://doi.org/10.1038/160250a0
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DOI: https://doi.org/10.1038/160250a0