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 96
globe floating, just half immersed, on a sheet of still water, and soweighted that its poles dip at an angle of 23J°, while it swims in acircle around the sun, a much larger globe, also floating on the samesurface. The sheet of water corresponds to the ecliptic, while theplane of the equator is a… … 124. Effects on Temperature.—The changes in the dura-tion of insolation (exposure to sunshine) at any place involvechanges of temperature, thus producing the seasons. It isclear that the surface of the soil at any place in the northernhemisphere will receive daily from the sun more than theaverage…
Astronomy
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