Astronomy, a handy manual for students and others (1918)
Dyson, Frank Watson, Sir, 1868-1939 · New York, E.P. Dutton & Co. · leaf 62
and Moonon the Earth, consider separately the sphere whichcan be just enclosed in the Earth, and the oblate partwhich bulges out at the equator. The attraction ofthe Sun, for example, on the spherical part producesa pull in the direction OS (Diagram XXVI), but doesnot tend to turn the Earth. The… … tion ES. But as E is nearer to S than E7, the pullalong ES is greater than that along E7S, and thereresult forces which tend to right the Earth, or bringOP nearer to OK. Butwhen the dynamical con-sequences of this rightingforce are investigated, itis found that owing to theEarths spin, the axisOP,…
Astronomy
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