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 54
being raised more than the upperlimb. This distortion is shown in Fig. 43. The verticaldiameter of the sun appears to be considerably less thanthe horizontal diameter. 32. Parallax. — Parallax is the displacement of anobject caused by a change in the point of view from whichit is seen. Thus in Fig.… … Fig. 44. angle a S Ik This angle is called the parallax of £. as seenfrom B instead of A. The geocentric parallax of a heavenly body is its dis-placement caused by its being seen from the surface of theearth, instead of from the centre of the earth. In Fig. 45.R is the centre of the earth, and O…
Astronomy
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