A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 310
arth, but reversed. COMBINATION OF EARTHS AND PLANETS MOTIONS. 297 The proof of this is simple. Let E, Fig. 160, be the earth, and P theplanet, their direction and distance being given by the line EP. Let E havea motion which will take it to E in a unit of time, and P a motion whichwill take it to… … Fig. 160. — The Relative Motions of Two Bodies. opposite in direction, and combine this motion with PP by drawing theparallelogram of motions, we shall get P for the resulting place of P atthe end of the unit of time; and because the line EP is parallel and equalto EP (as follows from the…
Astronomy
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