Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York, H. Holt and Company · leaf 43
// 24 ASTRONOMY, At either pole of the earth {s or n)^ the vertical linewill extend to the celestial pole, iT P or S P^ and the … Fig. 11. Correspondence of Circles on the Celestial and Terrestrial Spheres. zenith will remain the same from day to day, becausethe position of the observer is not changed by the rota-tion of the earth. If the observer is in latitude 45°, he will in twenty-fourhours, by the rotation of the earth,…
Astronomy
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