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PHYSICS 002C Lecture 09

# PHYSICS 002C Lecture 09 - PHYSICS 002C Lecture 09 Serway...

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Lecture 09 April 17, 2009 Serway and Jewett Chapter 24 – Electromagnetic Waves DEMO : Faraday’s law means a changing magnetic field generates electric fields in free space! The induced electric field is picked up by a long coil and a large diameter coil far from the physical magnets. The field causes a current that lights a bulb. Q: Which one is a wave equation? a) 0 ) , ( 1 ) , ( 2 2 2 2 2 = - t t x y v x t x y ; b) 0 ) , ( ) , ( 2 2 2 2 2 = - t t x y v x t x y ; c) 0 ) , ( ) , ( 2 2 2 2 = - z t x y x t x y ; d) 0 ) , ( 1 ) , ( = - t t x y v x t x y ; e) 0 ) , ( ) , ( 2 2 2 2 = - t t x y x t x y ζ ξ μ η New Material - Chap 24.1 Displacement current The amazing thing is that Faraday’s law is non-local ! At first it appears that there is “Action at a distance” , but where are the little sticks that are pushing things? 1

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PHYSICS 002C Lecture 09 - PHYSICS 002C Lecture 09 Serway...

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