news_033111

news_033111 - 2 nx L = if m 6 = n L / 2 if m = n Q2T.2...

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Stuff for Thursday, March 31, 2011 Please turn in homework up front and pick up your 1094 sheet. Quiz tomorrow on Q1 and Q2. Some Q1T answers: 6 T; 7 B; 8 B; 9 E; 10 B; 11 F 1094 Session 1 follow-ups: Q1 standing waves answers look good (complete answers!) PhET sims available free through web page (Google ”phet”) Fourier transform coefficients A n uniquely determined f ( x ) = X n = 1 A n sin 2 π nx L » use: Z L / 2 - L / 2 sin 2 π mx L sin
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Unformatted text preview: 2 nx L = if m 6 = n L / 2 if m = n Q2T.2 answers: (a) A; (b) B; (c) C; (d) C; (e) A; (f) A Two-slit interference with slit separation d d sin n c = n = n c = sin-1 n d n d ( constructive ) Diffraction: waves spread when passing through slit of width a a sin n d = n = n d = sin-1 n a n a ( destructive)...
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