Neap Tides

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“The elevation of the tides at c and d is produced by the causes already explained; but their elevation is not so great as normal, since the influence of the Sun acting in the direction a b, tends to counteract the Moon’s attractive influence. These small tides are called neap tides, and happen only when the Moon is in her quadartures.” —Comstock, 1850


water, sun, moon, earth, high, Tide, Neap




J. L. Comstock A System of Natural Philosophy: Principles of Mechanics (: Pratt, Woodford, and Company, 1850) 339


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