Elements of astronomy ... with explanatory notes, and questions for examination (1855)
Brocklesby, John, 1811-1889 · New York, Farmer, Brace & co. · leaf 174
1 to PM1, whichis the distance of the moon on the horizon from a spec-tator on the surface of the earth at P. PM1 is there- 1. The difference in the distances PM1 and EM1 is only about thirtymiles. Does it make any difference in the distance of the moon from us whether she is in thezenith or upon… … MOONS APPARENT SIZE INCREASED IN THE ZENITH. than EM by PE, the radius of the earth, and is there-fore less than PM1 by about the same quantity. 320. The moon is therefore nearer the spectator whenshe is ill the zenith than when she is upon the horizon byalmost 4,000 miles. This change in distance…
Astronomy
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