Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 26
ASTRONOMY. … poles of the heavens are on the horizon, and the diurnalcircles are perpendicular to the horizon. When the observer is at one of the poles, as in Fig. n.the poles of the heavensare in the zenith and thenadir, and the diurnal cir-cles are parallel with thehorizon. 6. Elevation of the Poleand of the…
Astronomy
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