Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 429
sharp pencil. Similarly, draw another line ah about as far to the right of thecenter as cd is to the left, llemove your glass and complete the drawing asindicated in the diagram. P is the apparent position of P. As you have already learned from yourtext, the ratio of the velocities of liglit in air… … Fig. 395. Index of refraction THE NATURE OF LIGHT 378
Physics
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