Unformatted text preview: and t). Then substitute the numerical values. 7. An electromagnetic wave has the form E ( r ,t) = î E sin (kz  wt) + j E cos (kz  wt) where î and j are unit vectors in the x and y directions. (a) Show that the direction of the electric field rotates in the xyplane. (This is circularly polarized light.) (b) What is the intensity of this EM wave? (c) Write an equation for the magnetic field of this wave as a function of position and time ( i.e. B ( r ,t))....
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This note was uploaded on 11/16/2011 for the course PHYS 214 taught by Professor Thorne during the Summer '08 term at Cornell.
 Summer '08
 THORNE
 Physics

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