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Announcements 4/4/12

Announcements 4/4/12. Prayer Exam 3 ends Friday night Done with liquid helium experiments… regular office hours resume. Speed Bump. Announcement from Dr. Hart. Reading Quiz. Who theoretically derived the correct blackbody radiation formula (energy emitted at various frequencies)

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Announcements 4/4/12

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  1. Announcements 4/4/12 • Prayer • Exam 3 ends Friday night • Done with liquid helium experiments… regular office hours resume Speed Bump

  2. Announcement from Dr. Hart

  3. Reading Quiz • Who theoretically derived the correct blackbody radiation formula (energy emitted at various frequencies) • Curie & Weiss • Plank • Rayleigh & Jeans • Sommerfeldt • Stefan & Boltzmann

  4. Reading Quiz • What critical assumption did Plank make to produce the correct formula? • continuous energy • quantized energy • long wavelength limit • short wavelength limit

  5. Reading Quiz • Whose law says that the amount of emitted blackbody radiation is proportional to T4? • Curie & Weiss • Plank • Rayleigh & Jeans • Sommerfeldt • Stefan & Boltzmann

  6. Energy of all photons with freq. f

  7. Waves in a “box” • Stefan-Boltzmann law • Plank radiation law

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