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Assignment_8_08

# Assignment_8_08 - Physics 214 Assignment 8 Concepts EM...

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Physics 214 Assignment 8 Concepts: EM Waves - relations between E, B and v Polarization by reflection, Brewster's angle Plane waves Polarization Reflection, Refraction of EM waves Snell's law Total internal reflection Reading: Y&F, Vol. 2, Chapters 32 and 33 Assignment: Due in lecture on Thursday, March 27. Please turn in this sheet stapled to the top of your work. Physics Problems: 1. An EM traveling (plane) wave has an electric field given in the complex representation by [ ] ) ( 0 ) ˆ ˆ 1 ( Re t kz i e E j i i E ω + = G , where i and and are unit vectors in the x and y directions. ˆ j ˆ (a) What is the direction of propagation? (b) Find the magnetic field ) , , , ( t z y x B G . (c) Write real expressions for the x and y components of E G at the origin as functions of time. Then write expressions for the magnitude and direction (in terms of the angle θ measured from the + x axis) of at the origin as functions of time. [This is an example of circular polarization .] E G 2. An unpolarized beam of light (intensity 0 I ) is moving in the x -direction. The light

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Assignment_8_08 - Physics 214 Assignment 8 Concepts EM...

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