An introduction to astronomy : designed as a text book for the students of Yale College (1846)
Olmsted, Denison, 1791-1859, Yale College (1718-1887) · New York : Collins, Brother & Co. · leaf 141
MF, so elevated that its summit M reaches to the solar raySOM, the point M will be enlightened. Let E be the place of theobserver on the earth, the moon being at any elongation from thesun, as measured by the angle EOS. Draw the lines EM, EO,and CM, C being the center of the moon; and let FM be… … comes known. Now 0M=- ON T»»^TVT 5 and since OENis a verycos. MON ^ small angle, EON may be considered as a right angle; conse- ONquently, MON=MOE-90. Therefore OM ON ON cos. (MOE-90) T»«/-wT^ T^^o, That is, the distance between the summit sm. MOE sm. EOS of the mountain and the illuminated part of…
Astronomy
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