A new manual of the elements of astronomy, descriptive and mathematical .. (1868)
Kiddle, Henry, 1824-1891 · New York, Ivison, Phinney, Blakeman & co.; Chicago, S.C. Griggs & co. · leaf 132
elatively very much greater. To understand the principle onwhich the altitude of the lunar mount-ains is found, let E (Fig. 83) repre-sent the position of the earth, C, thecentre of the moon, S, the direc-tion of a ray of the sun, falling on thetop of a mountain at M, which there-fore appears to an… … Questions.—d. Describe Copernicus, e. Height of lunar mountains ? How found V 128 THE MOON. about V\ then A M will be is of the moons diameter, or about 72 miles.Then, from the properties of the right-angled triangle, (A C)2 + (A M)* =(C M)2; that is, (1080)2 + (72)2 = (C M)2 = 1,171,534; the…
Astronomy
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