Lessons in astronomy including uranography. A brief intoductory course without mathematics (1896)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston, London, Ginn and company · leaf 159
rom 236,050 to238,300. Since the mean length of the shadow is less than the meandistance from the earth (238,800 miles), it is evident that onthe average the shadow will fall short of the earth. The eccen-tricity of the moons orbit, however, is so great that she issometimes more than 30,000 miles… … To Sun Fig. 40. — The Moons Shadow on the Earth. this CLse the cross-section of the shadow, where the earthssurface cuts it (at o in Fig. 40) will be about 168 miles indiameter, which is the largest value possible. On the otherhand, when the moon is farthest from the earth, we may havethe state of…
Astronomy
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