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)
465 influence of the earths own attraction and centrifugal force, come to aproper level, and, except for the disturbing influence of the wind, re-main from age to age in a state of equilibrium, as represented by thediagram. 916. Figure 16.—A single tide-wave.—It would seem, atfirst thought, that… … the right. The three arrows represent the attraction of the moon uponthe water of the earth. If the water were thus drawn to only one sideof the earth, there could be but one flood and one ebb tide in 24 hours;whereas there are Uoo of each. 917. Figure 17.—The t-wo tide-waves. — Instead of onlyone…
Physics · Astronomy
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