The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 57
zenith towards thehorizon, and that the parallax of a body is greatest when itis on the horizon. The parallax of a heavenly body whenon the horizon is called its liorizontal parallax. A bodyin the zenith is not displaced by parallax, since it wouldbe seen in the same direction from both the centre… … ^ig- 45- distance and parallax of a body are so related, that, eitherbeing known, the other may be computed. 33. Aberration. — Aberration is a slight displacement of astar, owing to an apparent change in the direction of the raysof light which proceed from it, caused by the motion of theearth in…
Astronomy
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
