Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York, H. Holt · leaf 196
pses. It will be seen that in order to have either a total or an-nular eclipse visible upon the earth, the line joining thecentres of the sun and moon, being continued, muststrike the earth. To an observer on this line, the centres RECURRENCE OF ECLIPSES. 177 of the two bodies will seem to… … Fig. 63.—comparison of shadow and penumbra op earth andmoon. a is the position of the moon during a solar, b dur-ing a lunar eclipse. § 4. THE RECURRENCE OP ECLIPSES. If the orbit of the moon around the earth were in ornear the same plane with that of the latter around the sun—that is, in or near…
Astronomy
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