Astronomy for schools; upon the basis of Mons. Arago's lectures at the Royal observatory of Paris .. (1841)
Arago, F. (François), 1786-1853, Haskins, Roswell William, [from old catalog] ed · New York, Robinson, Pratt & co.; · leaf 189
nal language of astrono-mers, it is always spoken of as denoting this equinox. The retrograde movement of the equinoctial pointscauses the axis of the earth to describe, by virtue of aconical movement, a small circle, of which the diame-ter is equal to twice its inclination to the ecliptick,16 186… … J vertical to N, the north pole of the earth: suppose,farther, EOQ the equator, T Z the tropick of Can-cer, and V Y3 tnat °f Capricorn: V O Z the ecliptick,and B O its axis, which should be considered as im-moveable, because the ecliptick always passes throughthe same stars. But, as the equinoctial…
Astronomy
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