Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 78
24 hours—do you feel itturning ? If the Earth turns, and the observer stays at one place (sayin New York) on its surface, does he move in space ? If the observer DIURNAL MOTION: SUN, MOON, AND STABS. 57 moves round a circle every day, will his zenith, move on the surfaceof the celestial sphere? his… … Fig. 32.—Part of a Celestial Globe: Showing the principal circles of the celestial sphere. In this figure Z is the zenith of the observer, and iVT^/Shis horizon.P is the north celestial pole, and XX, XXI. . . 0, I . . . the celes-tial equator. 0 is the vernal equinox. All stars on the hour circleof…
Astronomy
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