The phenomena and order of the solar system (1843)
Nichol, J. P. (John Pringle), 1804-1859 · New York : Dayton & Newman · leaf 32
er this principle to thecase of circular motion as the accompanying diagram willshew. Suppose the great arch A B to be part of thesphere of the fixed stars, the Earth E being its centre, andlet C F D O be the proper circle or sphere of a planet, EXPLANATION OF IRREGULAR MOTION. 27 but instead of… … C F D O in the direction of the arrow. Now, whetherthe small circle has any motion around its own centre ornot, it is clear that the main or principle motion of theplanet will, in such circumstances, be around the greatcircle C F D O, or through the whole Heaven of the fixedstars in a definite time…
Solar system
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