Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York : H. Holt and company · leaf 245
one half of the lunarglobe, it is evident that when one half of the moons diskappears illuminated, the triangle EMS must be right-angled at M. The angle M E S can be determined bymeasurement, being equal to the angular distance betweenthe sun and the moon. Having two of the angles, thethird can be… … Fig. 70. Then knowing the distance of the moon, which can bedetermined with comparative ease, we have the distance ofthe sun by multiplying by this ratio. Aeistaeohus con-cluded, from his supposed measures, that the angle M ESwas three degrees less than a right angle. We should then have -pr^ = sin…
Astronomy
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
