Shuler, Molton Ancrum. [from old catalog] · New York, Broadway publishing company · leaf 78
anet soars out into space,again attaining its medium rate, to be followed later 60 THE FAMILY CELESTIAL by its least velocity, when it reaches the position fromwhence we first began to observe it. By an application of Keplers second law of plan-etary motion—Every planet moves round the sunwith such… … KEPLERS SECOND LAW planet to vary from the uniform rate. If, in our littlefigure, the two shaded sections of the ellipse are equalin area, then, according to the second law of Kepler,the planet must take just as long to travel over the arc,H K, as it does to traverse the much greater arc, M…
Astronomy
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