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Scientific American, Vol. 101, No. 14 (October 1909) (1909)

leaf 3

An illustration from Scientific American, Vol. 101, No. 14 (October 1909), 1909, leaf 3
seven hours behind; and the "Pacific" belt adopts the The great universal timekeeper is the earth itself. mer therefore does not rely wholly upon a single record 120th meridian time, just eight hours slower than So uniform is the earth's rotation on its axis, that the like the above, but will… … seconds of each of the first four an operation of finding the clock minutes, and the last ten seconds error is always what astronomers STANDARD TIME BELTS OE THE UNITED 8TATES. of the fifth minute; then follows understand by the expression the final stroke at exact noon. "obtaining time." The…

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