Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
very day, which accounts for a flood and ebb tide everytwelve hours. On the right is represented the moon in her orbit, the three arrowsrepresenting her attraction. 918. Figure 18.—Lagging of the tide-wave behind themoon.—As the moon, which is the principal cause of the tides, is re-volving… … Besides this daily delay with the moon, the highest point of the tide-wave lags behind, or east of the moon, about 46°, so that the high tidedoes not occur till about three hours after the moon has crossed themeridian. This is because the waters do not at once yield to the im-pulse of the moons…
Physics · Astronomy
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