Jacoby, Harold, 1865-1932 · New York, The Macmillan company · leaf 64
s to be projected on the sky very near the imaginary celestial pole ; and consequently the visible pole star partakes of the changes which we have just explained.1 In fact, the altitude, or angular elevation of the celestial pole above the horizon, is everywhere equal to the observer's terrestrial… … diurnal circles (p. 33) Fig. 10. The Right Sphere. (After Long's Astronomy, Vol. 1, p. 91. Cambridge, 1742.) are all perpendicular to the horizon, and they are all bisected or halved by the horizon. Consequently, as the celestial bodies perform their daily apparent rotation with the sphere, in…
Astronomy
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