Elements of theoretical and descriptive astronomy, for the use of colleges and academies (1901)
White, Charles J · New York: J. Wiley & sons · leaf 98
.000041 acentury; but Leverrier, a French astronomer, has proved thatafter the eccentricity has diminished to a certain point it willbegin to increase again. THE SEASONS. 99. The change of seasons on the earth is caused by the SEASONS. 91 inequality of the days aud nights, and this inequality is a… … Fig. 40. the sun, and A BCD the orbit of the earth. Pp is the axis ofrotation of the earth, and EQ the equator. The plane of thisequator is supposed to intersect the plane of the ecliptic in theline of equinoxes AC. Since, as we have already seen, the sunappears to be on this line on the 21st of…
Astronomy
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