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# Manfra3 - More Details PHYS 342 Read chapter 2 of Modern...

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More Details: PHYS 342 The course information sheet and the first few lectures are now posted on the course webpage. Meng-Lin Wu’s office hour: 10:30 to 12:00pm on Mondays Physics Rm. 105 Read chapter 2 of Modern Physics Problem set 1: From chapter 2; problems 1 through 9 and 11

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2.1 The Need for Ether 2.2 The Michelson-Morley Experiment 2.3 Einstein’s Postulates 2.4 The Lorentz Transformation 2.5 Time Dilation and Length Contraction 2.6 Addition of Velocities 2.7 Experimental Verification 2.8 Twin Paradox 2.9 Space-time 2.10 Doppler Effect 2.11 Relativistic Momentum 2.12 Relativistic Energy 2.13 Computations in Modern Physics 2.14 Electromagnetism and Relativity Special Theory of Relativity 1 It was found that there was no displacement of the interference fringes, so that the result of the experiment was negative and would, therefore, show that there is still a difficulty in the theory itself… - Albert Michelson, 1907 Albert Michelson (1852-1931)
The Michelson Interferometer Bea m- splitt er Inp ut bea m Del ay Mirr or Mirr or Fringes (in delay): [ ] [ ] { } [ ] { } { } * 1 2 0 1 0 2 2 2 1 1 2 0 0 Re exp ( 2 ) exp ( 2 ) 2 Re exp 2 ( ) ( / 2) 2 1 cos( ) out I I I c E i t kz kL E i t kz kL I I I ik L L I I I c E I k L ε ϖ = + + - - - - - = + + - ≡ = = = + ∆ since The Michelson Interferometer splits a beam into two and then recombines them at the same beam splitter. Suppose the input beam is a plane wave: L 1 where: L = 2( L 2 – L 1) L 2 Outp ut bea m I “Bright fringe” “Dark fringe” L = 2( L 2 – L 1) λ π 2 = k

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The Michelson Interferometer The Michelson Interferometer deliberately interferes two beams and so yields a sinusoidal output intensity vs.
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Manfra3 - More Details PHYS 342 Read chapter 2 of Modern...

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