The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 26
f their number called the 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 polesof the heavens; andthe 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
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
