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Physics 8.03 Vibrations and Waves

Physics 8.03 Vibrations and Waves. Lecture 18 Interference. Announcements. Problem set #9 is due Friday, April 30. Last time: dielectric media. Polarization and magnetization  index of refraction   modifies Maxwell’s equations  modifies wave velocity  v = c/n

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Physics 8.03 Vibrations and Waves

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  1. Physics 8.03Vibrations and Waves Lecture 18 Interference

  2. Announcements • Problem set #9 is due Friday, April 30

  3. Last time: dielectric media • Polarization and magnetization  index of refraction   modifies Maxwell’s equations modifies wave velocity  v = c/n • Laws of reflection and refraction (Snell) • Total internal reflection • Fresnel equations • Brewsters’s angle • Reflection and transmission amplitudes

  4. Today: interference • Due to phase difference between two sources • Propagation phase + intrinsic phase • Due to phase difference for single source propagating in media with different indices of refraction

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