AulaGrad-Compton Effect.pdf

AulaGrad-Compton Effect.pdf - Remarkable Questions What is...

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Remarkable Questions! What is an electron? What is electromagnetic radiation? What is light? What is a photon?
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Remarkable Questions!
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Quantization of Charge, Light and Energy 1. Quantization of Electric Charge J. J. Thompson - Discovery of the Electron ( e/m ) Millikan - Measuring the Electric Charge ( e ) 2. Black Body Radiation Stefan-Bolzmann Law Wien’s Displacement Law Rayleigh-Jeans Equation (UV Catastrophe) Planck’s Radiation Law and Constant
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Quantization of Charge, Light and Energy 3. Photoelectric Effect P. Lenard’s Experiment A. Einstein’s Explanation Millikan’s Stopping Potential Data 4. Compton Effect From the light quanta to the photon !
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Discovery of the Electron: J. J. Thomson’s Experiment (Cathodes Rays) J. J. Thomson, “Cathode Rays,” Philosophical Magazine (5), 44, 293 ( 1897 ) 1. Quantization of Electric Charge
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Measuring the Electric Charge: Millikan’s Experiment 1. Quantization of Electric Charge Millikan, R. A., Electrons, Protons, Photons, Neutrons, Mesotrons, and Cosmic Rays, 2d ed., University of Chicago Press , Chicago, 1947
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2. Black Body Radiation Radiation emitted by the object at temperature T
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2. Black Body Radiation Spectral distribution function R(λ) measured at different temperatures
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