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Scientific American, Vol. 39, No. 1 (1878) (1878)
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ts from the middle of the lower the earth’s rotation, but in reality the earth and the scale movement of the earth. with it move from west to east, while the index remains end of the frame to receive an index that extends nearly to The duration of the rotary movement thus produced must stationary,… … © 1878 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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