Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 146
hat theentering and emerging rays are parallel toeach other, although, as Fig. 97 shows, theydo not lie in one straight line. Evidently a thick plate of glass will, otherthings being equal, set the emergent rayfarther to one side, from the line of the original ray, thana thin plate will. 133.… … Fig. 97.
Physics
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