Lecture20 - ANNOUNCEMENTS Tycho HW #7 Due Thursday Night...

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ANNOUNCEMENTS Tycho HW #7 Due Thursday Night WebAssign HW #7 Due Friday Night Check Your Clicker Scores (Hitt02) and Report Any Problems to Me. New Survey (CSEM) Running Until Saturday May 22. Holiday Approaching: Monday May 25
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THE BIRTH OF “MODERN” PHYSICS 1894- LORD KELVIN ADVISES GRAD STUDENTS TO PURSUE OTHER FIELDS BECAUSE ALL OF THE MAJOR PHYSICS IS ALREADY UNDERSTOOD. ... BUT 1895- ROENTGEN’S X-RAYS & J.J. THOMSON’S ELECTRON AS A PARTICLE OPEN THE DOOR- 1900- BLACKBODY RADIATION AND PLANCK’S HYPOTHESIS 1905- EINSTEIN’S SPECIAL THEORY OF RELATIVITY 1905- PHOTON THEORY AND THE PHOTOELECTRIC EFFECT
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BLACKBODY RADIATION HOT OBJECTS GLOW, BUT DETAILS DEPEND ON OBJECT A BLACKBODY IS A THEORETICAL PERFECT CAVITY RADIATION CLOSELY SIMULATES A BLACKBODY CLASSICAL THEORY CANNOT EXPLAIN THE SPECTRAL INTENSITY (ATTEMPTS BY WIEN & RAYLEIGH-JEANS) PLANCK SUGGESTS A SOLUTION BASED ON QUANTIZATION OF ENERGY
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PLANCK’S QUANTA Rayleigh - Jeans Wien Wavelength 0 (to ) Intensity Frequency (to 0)
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Lecture20 - ANNOUNCEMENTS Tycho HW #7 Due Thursday Night...

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