Elements of theoretical and descriptive astronomy, for the use of colleges and academies (1901)
White, Charles J · New York: J. Wiley & sons · leaf 110
d not be accompanied by equal advancesin right ascension, in consequence of the obliquity of theecliptic to the meridian. The truth of this may be seen inFig. 43. Let this figure represent P the projection of the celestial sphereon the plane of the equinoctial co-lure PApH. A and H are… … drawn, meeting the equinoctial in the points b, c, &c. Now, since all great circles bisect eachother, AEH is equal to AeH, and if Pep is the projection of anhour-circle perpendicular to the circle PApH, AE and Ae arequadrants, and equal. The angle PBO is evidently greaterthan PAB, PCD is…
Astronomy
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