Herschel, John F. W. (John Frederick William), Sir, 1792-1871 · London : Longman, Rees Orme · leaf 371
h, if the compound force thus produced de-crease at a slower rate than the inverse square of thedistance (t. e. be too strong in the remoter distances),too little, if the joint force decrease faster than gravity;or more rapidly than the inverse square, and be there-fore too weak at the greater… … and will therefore bring it later to an apogee. In theformer case, then, the line of apsides will retrograde; inthe latter, advance. (See jig. 1. and fig.%.) (572.) Both these cases obtain in different configur-ations of the sun and moon. In the syzigies, the effect CH. XI. PROGRESSION OF THE LUNAR…
Astronomy
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