An introduction to astronomy : designed as a text book for the students of Yale College (1846)
Olmsted, Denison, 1791-1859, Yale College (1718-1887) · New York : Collins, Brother & Co. · leaf 302
he periphery of the deferent. Con-ceive the circumference of the deferent to be carried about theearth every twenty-four hours in the order of the letters; and atthe same time, let the center v of the epicycle abed, have a slowmotion in the opposite direction, and let a body revolve in this cir- *… … appear stationary at I and m, and at n and o; that its motionwould be direct from k to I, and then retrograde from I io m; di-rect again from m to n, and retrograde from n to o. 445. Such a deferent and epicycle may be devised for eachplanet as will fully explain all its ordinary motions; but it is…
Astronomy
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