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Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)

Johnson, Frank G., 1835- · Chicago, A.H. Andrews · leaf 449

An illustration from Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families, 1878, leaf 449
for the reason, that theearth moves much faster in its orbit than the moon in her orbit. Infact, i\\Q forward motion oi the moon is never less than 67,500 milesper hour, for the reason that her hourly motion in her oivn orbit is only2,300 miles per hour, while that of the earth is 68,000 miles per… … This arc and the cord, TS, being known, it is found that the cord, TS,must pass more than 240,000 miles within the earths orbit; hence, themoon can never reach the cord, as at E; therefore the path of themoon, TNLS, must curve toward tlie sun. 861. View of the earth from the moon.—The appearanceof…

Physics · Astronomy

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