Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 41
on the other hand, will never rise to view. Since the sun and moon move among the stars in such a way thatduring half the time they are north of the equator and half the timesouth of it, they will be half the time above the horizon and halfthe time below it (at least approximately, since this… … Fig. 9. — The Oblique Sphere. It is worth noting that for an observer exactly at the north polethe definitions of meridian and azimuth break down, since there thezenith coincides with the pole. Face in what direction he will, he islooking due south. If hechanges his place a few steps,however,…
Astronomy · Constellations
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