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The elements of astronomy; a textbook (1919)

Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 211

An illustration from The elements of astronomy; a textbook, 1919, leaf 211
rt, and at the ports ofthe German Ocean. In the great oceans, there are thus three or four tide crests travel-ling simultaneously, following each other nearly in the same track,but with continual minor changes. If we take into account the tidesin rivers and sounds, the number of simultaneous tide… … 196 TIDES IN RIVERS. [§ 276 276. Tides in Rivers. — The tide wave ascends a river at a ratewhich depends upon the depth of the water, the amount of friction,and the swiftness of the stream. It may, and generally does, ascenduntil it comes to a rapid where the velocity of the current is greaterthan…

Astronomy · Constellations

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