Computer Science – Sound
Scientific paper
Nov 1892
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1892natur..47...77g&link_type=abstract
Nature, Volume 47, Issue 1204, pp. 77 (1892).
Computer Science
Sound
Scientific paper
A FEW facts relative to this subject may be interesting. At Plymouth on August 12 about 9 o'clock, favoured with a beautifully clear horizon, the brilliancy of Mars was so great that it cast a distinctly black shadow on a piece of white paper from an ordinary walking stick held at a distance of 4½ inches; the outline of the hand, under the same conditions, was also easily perceptible. A faint, yet decided, darkening of the white cliffs of the shore was caused by a person standing upright-the slope being about 45°. The point of observation was at the extreme north-west of the Sound, and the splendour of the planet's light reflected from three or four miles of water is perhaps unrivalled.
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