Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 227
heorbit, and it was actually in just this way that Kepler, fromthe observations of Tycho, showed that the planetary orbitsare ellipses, and deduced their relative distances from the sunas compared with that of the earth. His harmonic law wasthen discovered by simply comparing the periods with the… … 301. Simple Method of finding the Distance of an Inferior Planet. — In the case of DistanVenus, which has a practicallycircular orbit, the method illus-trated by Fig. 77 may be used. When the planet is at its greatestelongation, the angle SVE is sensibly a right angle, so that we need Fig. 77. ce…
Astronomy · Constellations
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