Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 395
255). — Eegardingthe moons orbit as a circle, we can easily compute how muchshe falls toward the earth ina second. In Fig. 132 let AE be thedistance the moon travels ina second, then DE, or itsequal (sensibly) AB, is thevirtual fall of the moontowards the earth in one sec-ond; i.e., the amount… … Fig. 132. Verification of the Hypothesis of Gravitationby Means of the Motion of the Moon. AB:AE::AE:AF, or AB = (AE)~2R~ R being the radius of the orbit. Now AE is found by divid-ing the circumference of the circle 2ttR by T, the number ofseconds in a sidereal month; 376 APPENDIX. [§ 505 A 2Z?2…
Astronomy · Constellations
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