Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 48
e parallel of latitude. In the figurethe parallels of latitude are represented by straight lines. SPACE—THE CELESTIAL SPHERE-DEFINITIONS 27 All places having the same longitude are situated on thesame meridian. We shall give the astronomical definitionsof these terms further on. It is found… … Fig. 9.—Latitude and Longitude of Places on the Earths Surface. ical purposes it is found more convenient to count thelongitude of a place from the first meridian always towardsthe west. Thus Sydney is 209° west of Greenwich (360°- 151° = 209°). The Earth turns on its axis once in 24 hours. In a…
Astronomy
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