11.07.2015 Views

Mathematics and Society - OS X Lion Server

Mathematics and Society - OS X Lion Server

Mathematics and Society - OS X Lion Server

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BENDING OF LIGHT?![(?!?{CrIL1N(COIVTIIVUED)(pages.A geometrical method of finding the index of refraction is shown on the studentAn alternative method will be shown here.Willebrord Snell, a Dutch mathematician,studied this phenomenon <strong>and</strong> stated the followinglaw.Snell's law:N(air) xSince N(air)N(glass)sin i = N(glass) x sin r1.00 this can be stated(1. 00) sin isin rAn example of how this is used is shown below.Step A through Con the student pagesoutline the procedureto set up the equipment<strong>and</strong> find anglesi <strong>and</strong> r.LAIR//_.~/;;;J/j'I//J/GLASS///i-r / MLr- 2.7/ / / IIIi / / 1// ~N(glass)N(glass) = 1.551.00 sin i \sin r= (1.00)(.707)(.456)(Students will need a table of sine values to use this method.368

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