Lessons in astronomy including uranography. A brief intoductory course without mathematics (1896)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston, London, Ginn and company · leaf 342
make up the loss,so that when opposition isreached once more they areagain on time. It is easy to see fromFig. 97 that at oppositionthe planet is nearer the earth than at conjunction by just twoastronomical units. At opposition the distance between Jupi-ter and the earth is J A, while six and a… … Fig. 97. — The Equation of Light. 330 APPENDIX. L§ 432 tion and conjunction must therefore be exactly twice the timelrequired for light to come from the sun to the earth. In this waythe light-equation constant is found to be very nearly 499seconds, or 8 minutes 19 seconds, with a probable error…
Astronomy
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