Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York, H. Holt and Company · leaf 42
th is considered as a correspondingpoint of the celestial sphere. If for a moment we supposeboth spheres at rest, an observ^er travelling over the earthwould find his zenith to mark out a path on the celestialsphere corresponding to his path on the earth. To mi-derstand the relation, we may imagine… … // 24 ASTRONOMY, At either pole of the earth {s or n)^ the vertical linewill extend to the celestial pole, iT P or S P^ and the
Astronomy
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