Physics
Scientific paper
Dec 1939
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1939natur.144..944g&link_type=abstract
Nature, Volume 144, Issue 3657, pp. 944 (1939).
Physics
Scientific paper
ADVANTAGE has been taken of the recent very favourable opposition of Mars to make a close examination of the surface features. The 9 in. Cooke photo-visual refractor has been employed, usually with a magnification of 250. A fortnight of reasonably clear weather at the end of July assisted considerably, and nearly one hundred drawings of the disk have been made. The following is a summary of the chief points of interest revealed by these:
Geddes M.
Thomsen Ivan L.
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