A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1853)
Mattison, Hiram, 1811-1868 · New York, F. J. Huntingdon [etc.] · leaf 137
ssed the meridian. 285. As both the sun and moon are concerned in theproduction of tides, and yet are constantly changingtheir positions with respect to the earth and to eachother, it follows that they sometimes act against eachother, and measurably neutralize each others influence ;while at other… … %i^jj ^4A.^V 1. Here the sun and moon, being in conjunction, unite their forces to produce an ex-traordinary tide. The same effect follows when they are in opposition ; so that we havetwo spring tides every month—namely, at new and full moon. 2. If the tide-waves at A and B are one-third higher at…
Astronomy
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