Electro astronomical atlas ... with explanatory notes, questions and answers (1874)
Spoor, J. W. (Joseph W.) · Albany, N.Y., Weed, Parsons and Company · leaf 73
r enlightened surface comes more andmore into view. Q. How many degrees does she pass in reach-ing her first quarter ? A. She passes just ninety degrees. Q. What is her appearance at this point ? A. Having finished just half of her coursefrom the new to the full Moon, she presents justone-half of… … KgKotation of a Sphere, We must recollect that it is the phases of theMoon which have demonstrated to us its revolu-tion round the Earth. This movement, added tothe fact that the Moon constantly presents thesame hemisphere to the Earth, proves that it turnsalso on itself, in a period of time…
Astronomy
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