Berry, Arthur,b. 1862 · London, J. Murray · leaf 48
kest line is the path of the pole star. [To face p. 8. $$ 9. io] 7/fce Daily Motion of the Celestial Sphere 9 same time of night. Rather more careful observation,carried out for a considerable time, is necessary in orderto see that the aspect of the sky changes in a regular wayfrom night to night,… … Fig. 3.—The circles of the celestial sphere. unknown discoverer of this fact certainly made one ofthe most important steps in early astronomy. If an observer notices soon after sunset a star somewherein the west, and looks for it again a few evenings later atabout the same time, he finds it lower…
Astronomy
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