The elements of theoretical and descriptive astronomy, for the use of colleges and academies (1872)
White, Charles J. (Charles Joyce), 1839-1917 · Philadelphia, Claxton, Remsen & Haffelfinger · leaf 97
acentury; but Le Verrier, 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 and nights, and this inequality is a result… … Fig. 40. the sun, and ABCD 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 A C. Since, as we have already seen, the sunappears to be on this line on the 21st of…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-331-222.webp)
