Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 61
Fig. 5°- account for this they assumed that the cycles described bythe centre, around which the planets revolved, were eccen-tric ; that is to say. that the earth was not at the centreof the cycle, but some distance away from it. as shownin Fig. 51. E is the position of the earth, and C is the 44… … centre of the cycle. The lines from E are drawn so as tointercept equal arcs of the cycle. It will be seen at oncethat the angle between any pair of lines is greatest at P, and least at A; so that, were aplanet moving at the same rateat P and A, it would seem tobe moving much faster at P.The point…
Astronomy
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