Peck, William G. (William Guy), 1820-1892 · New York, Chicago, A. S. Barnes & company · leaf 149
ng it by 2. Ifthe distance ES is the mean distance, and if it is taken equal to 1, wehave the suns actual diameter equal to twice the sine of 16. From the triangle ESB, we have EB, the earths radius, denoted byr, equal to D multiplied by the sine of ESB, or, denoting the latterangle by tt, ?* = D… … THE SUN AND PLANETS. 145 The Suns Distance and the Solar Parallax. 115. It has been shown that the relative positions of thesun and planets can be found at any time, and also thattheir distances from each other can be expressed in termsof the earths mean distance from the sun as a unit. Now,if the…
Astronomy
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