A new manual of the elements of astronomy, descriptive and mathematical .. (1868)
Kiddle, Henry, 1824-1891 · New York, Ivison, Phinney, Blakeman & co.; Chicago, S.C. Griggs & co. · leaf 167
equa-tor, autumn within the north polar circle, and spring within the south polarcircle. Fig. 98 exhibits the planet at each of the equinoxes and solstices: To aninhabitant of the northern hemisphere of Venus, at A the sun is in the vernalequinox; B, the summer solstice; C, the autumnal equinox;… … SEASONS OP VENT/S. 227. Venus performs its sidereal revolution in about 224§days (224d 16h 49m); its synodic period is about 584± days. a. For its sidereal period is 224.7 days, and 365.25 -f- 224.7 = If ;hence If — 1 = f, is the part of a synodic revolution performed in365i days ; and 365^ -h f =…
Astronomy
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