Other
Scientific paper
Sep 1918
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1918natur.102q..25c&link_type=abstract
Nature, Volume 102, Issue 2550, pp. 25 (1918).
Other
Scientific paper
ELECTRICAL phenomena resembling aurora have hitherto been observed in the laboratory only at very low atmospheric pressures, and the recent determinations of the altitude of aurora by Prof. Störmer and others have given few heights so low as 50 km. Thus reported observations of aurora below the summits of mountains are naturally viewed with suspicion by physicists. The explanations given by Dr. Simpson of the three cases he describes-the only ones apparently observed during the Scott Antarctic Expedition of 1911-12-are ingenious. But in two cases it is not explicitly stated whether the original observer accepted the proffered explanation, and in the remaining case it appears that, with Dr. Simpson's explanation before them, the majority of the observers remained of their original opinion. Sir Douglas Mawson's list included a greater number of apparent cases of aurora at low altitudes, but whether the observers possessed the exact shade of scepticism desirable in observers in such a case I am unable to say.
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