A compendium of astronomy; containing the elements of the science, familiarly explained and illustrated, with the latest discoveries. Adapted to the use of schools and academies, and of the general reader (1850)
Olmsted, Denison, 1791-1859 · New York, R. B. Collins · leaf 283
WORLD. while the smaller circle whose center was always in theperiphery of the deferent, was called the epicycle. Themotion in each was supposed to be uniform. Lastly, itwas conceived that the motion of the center of the epi-cycle in the circumference of the deferent, and of theplanet in that of… … Let dbc represent the epicycle, having its center at v, onthe periphery of the deferent. Conceive the circumfer-ence of the deferent to be carried about the earth everytwenty four hours in the order of the letters ; and at the 333. Explain the Ptolemaic System by figure 53. THE PTOLEMAIC SYSTEM.…
Astronomy
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