Computer Science
Scientific paper
Apr 1915
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1915natur..95..204.&link_type=abstract
Nature, Volume 95, Issue 2373, pp. 204 (1915).
Computer Science
Scientific paper
PROF. A. W. PORTER, in NATURE of February 18 (vol. xciv., p. 672), seems to think that the ``green ray'' is more of a subjective phenomenon than anything else, or at least often is so; but the fact that it is seen at sunrise also shows that in this case at least it is not a result of complementary colours. Besides, if it were a subjective phenomenon, one would expect to see it on every occasion when the sun set behind a clear horizon, whereas the sight is somewhat rarer. I once saw a lovely blue flash, and I read a description recently of a sunset in Palestine where the writer speaks of the sun vanishing like a blue spark. If you hold a lens almost edgeways on between your eye and a light and move it until it is quite edgeways on a few discs of light will be seen, and at last these vanish in a green or blue flash, the effect of dispersion.
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