Astronomy, a handy manual for students and others (1918)
Dyson, Frank Watson, Sir, 1868-1939 · New York, E.P. Dutton & Co. · leaf 37
ly, and the accuracy of the result cannot be stated, but the method is sound and the result not far from the truth. Knowing the size of the Earth Hipparchus was able to measure the distanceof the Moon. When theMoon is partially eclipsedthe edge of the shadow ofthe Earth is seen as part ofa circle… … Diag. XIII. ANCIENT ASTRONOMY 27 distance of the Moon subtends an angle of 8o. Dia-gram XIV, in which S, E, M are the Sun, Earth and F
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
