A new manual of the elements of astronomy, descriptive and mathematical .. (1868)
Kiddle, Henry, 1824-1891 · New York, Ivison, Phinney, Blakeman & co.; Chicago, S.C. Griggs & co. · leaf 67
face of the earth, therays of light which proceed from any body are constantly bent more and more toward a perpendicular direction ;and since we see an object in the direction in which the ray of lightstrikes the eye, the apparent altitude of the body will be increased. Questions.—fit. What other… … Fig. 43. Suppose E to represent the earth, and A B C D, portionsor strata of the atmosphere, ofdifferent densities, P, the placeof observation. Suppose a rayof light from the star S, strikethe atmosphere at a; on ac-count of refraction, instead ofproceeding in the direction SA, it describes a 6, 6…
Astronomy
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