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Unformatted text preview: 26.61. Set Up: At the point where no waves reach you the interference is destructive and the path difference is The frequency of the waves is The geometry of the situation is sketched in Figure 26.61. Figure 26.61 Solve: (a) and (b) Reflect: The nature of the interference at an observation point depends on the relation between the path difference for the two sources and the wavelength of the waves. Interference occurs for all types of waves, not just for light. 26.62. Set Up: The dark fringes are located by The first dark fringes are for is the distance from the center of the screen. From the center to one minimum is 2.61 cm. Solve: and 26.63. Set Up: For the waves reflected at the top surface of the oil film there is a half-cycle reflection phase shift. For the waves reflected at the bottom surface of the oil film there is no reflection phase shift. The condition for constructive interference is The condition for destructive interference is Wavelengths that are predominant in the transmitted light are those for which there is destructive interference in the reflected light. The are predominant in the transmitted light are those for which there is destructive interference in the reflected light....
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This note was uploaded on 03/06/2009 for the course PHYS 114 taught by Professor Shoberg during the Spring '07 term at Pittsburg State Uiversity.
- Spring '07