Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York : H. Holt and company · leaf 48
e ; there will be no east andwest line, and no direction but south, The sphere in thiscase is called a parallel ipfiere. DIURNAL MOTION IN DIFFERENT LATITUDES. 27 If instead of travelling to tlie north the observer shouldgo toward the er[uator, the north pole would seem to ap-proach his horizon.… … Fig. 11.—THE EIGHT SPHERE. The sphere in this ease is called a right sphere, becausethe diurnal motion is at right angles to the horizon. If nowthe observer travels southward from the equator, the southpole will become elevated above his horizon, and in thesouthern hemisphere appearances will be…
Astronomy
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