Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York : H. Holt and company · leaf 175
he real motion of these threebodies, we must imagine the earth performing its circuitaround the sun in one year, and carrying witli it the moon,which makes a revolution around it in 27 days, at a distanceonly about -^ that of the sun. In Fig. 55 suppose S to represent the sun, the largecircle to… … Fig. 55. imagine the latter to carry this circle with it in its an-nual course around the sun. Suppose that when the earthis at E the moon is at M. Then if the earth move, to E^ in 27^ days, the moonwin have made a completerevolution relative to thestars—that is, it will be atM„ the line E^ M^…
Astronomy
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
