Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 24
e pole star, in the direction indi-cated by the arrows inFig. 7. In a word, thewhole heavens appearto rotate once a day.from east to west,about an axis, whichis the prolongation ofthe axis of the earth.The ends of this axisare called the poles^Mj^^^^^^di^m °f tne heavens : and Fig. 7. the great… … 8 ASTRONOMY. 5. Diurnal Circles. — In this rotation of the heavens, thestars appear to describe circles which are perpendicular tothe celestial axis, and parallel with the celestial equator.These circles are called diurnal circles. The position of the poles in the heavensand the direction of…
Astronomy
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