Elements of astronomy: accompanied with numerous illustrations, a colored representation of the solar, stellar, and nebular spectra, and celestial charts of the northern and the southern hemisphere (1875)
Lockyer, Norman, Sir, 1836-1920 · New York, D. Appleton and company · leaf 236
, the stars appear to be higher above the horizon thanthey really are. In Fig. 88, A B represents a pencil oflight coming from a star. In its passage through our at- extent of the apparent .circular motion of the star depend ? From the actualdimensions of the circle, how fast is light found to… … Fig. 88.—Illustrating Refraction. mosphere, since each layergets denser as the surfaceof the Earth is approached,the ray is gradually re-fracted until it reaches thesurface at G; from whichpoint the star seems tolie in the direction G B. 413. The refraction oflight can be best studied by means of a…
Astronomy
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