New Evidence of the Action of Sunlight on Aurora Rays

Details New Evidence of the Action of Sunlight on Aurora Rays New Evidence of the Action of Sunlight on Aurora Rays

Jun 1929

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1929natur.123..868s&link_type=abstract

Nature, Volume 123, Issue 3110, pp. 868-869 (1929).

Physics

1

Scientific paper

ON Mar. 15 last I received information from the State Telegraphic Department that earth currents were disturbing the telegraphic service. Believing that we should have an aurora in the evening, I warned my four photographic stations, Oslo, Kongsberg, Tömte, and Oscarsborg, to be ready for action immediately after sunset. Using the excellent type of direct vision spectroscope described by Lord Rayleigh,1 I was able to localise an aurora arc in the northern sky during the twilight, long before it was possible to distinguish it visually.

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