PHY2061 R. D. Field Department of Physics chp39_4.doc University of Florida Law of Refraction Index of Refraction: Light travels at speed c in a vacuum. It travels at a speed v < c in a medium. The index for refraction, n, is the ratio of the speed of light in a vacuum to its speed in the medium, n = c/v, where n is greater than or equal to one. Theory of Refraction: Let tABbe the time for light to go from the point Ato the point Brefracting at the point P. Thus, tvLvLAB=+111
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This note was uploaded on 05/31/2011 for the course PHY 2061 taught by Professor Fry during the Spring '08 term at University of Florida.