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news_040711 - Problem Q4B.2: using = hc / p 2 ( mc 2 ) K...

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Stuff for Thursday, April 7, 2011 Up front: turn in PS#3, take back 1094 sheet (PS#2 Friday) Stop at 4pm today for Quiz 2 on Q3/Q4 (no extra time!) 1094 follow-ups photoelectric effect: one photon per electron knocked out = K out = photon energy in - “ionization energy” interference from different length paths taken by waves lower speed = larger DeBroglie λ = more wave-like
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Unformatted text preview: Problem Q4B.2: using = hc / p 2 ( mc 2 ) K (units!) total diffraction when > slit size diffraction around building (Huygens + Babinets principles) Formulas for Quiz 2 (i.e., these will be given): v = f k = 2 = 2 f d sin nc = n a sin nd = n = h p = hc p 2 ( mc 2 ) K E = hf = hc = 1240 eV nm K = hf-W...
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