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Unformatted text preview: Interference of Light II Interference of Light II 37.3, 37.4, 38.1 37.3, 37.4, 38.1 Intensity of doubleslit pattern Thre e or more slits Practice: Chapter 37, problems 13, 14, 17, 19 Youngs Double Slit Experiment Youngs Double Slit Experiment Screen at Path difference zero intensity at d d sin = ( m ) , m = 0, 1, 2, r = d sin max. intensity at d sin = m , m = 0, 1, 2, Questions:what is the intensity of the doubleslit pattern at an arbitrary position?What about three slits? four? five? Find the intensity of the doubleslit interference pattern as a function of position on the screen. Two waves: E 1 = E sin( t ) E 2 = E sin( t + ) where =2 ( d sin ) / , and gives the position. Steps: Find resultant amplitude , E R ; then intensities obey 2 = E E I I R R where I is the intensity of each individual wave. Two waves: E 1 = E sin( t ) E 2 = E sin( t + ) sin 2 2 with ) ( cos 4 2 1 2 d r I I R = = =...
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This note was uploaded on 12/03/2009 for the course CHEMISTRY 1E03 taught by Professor Britz during the Spring '09 term at McMaster University.
 Spring '09
 Britz

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