Lecture19

Lecture19 - Major Concepts in Physics Lecture 19. Prof...

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PHY102 1 Major Concepts in Physics Lecture 19. Prof Simon Catterall Office 309 Physics, x 5978 smc@physics.syr.edu http://physics/courses/PHY102.08Spring
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PHY102 Announcements ± Exam 3 – Monday April 14 in class ± Material: ² everything since exam 2. eg temperature, heat, work, laws of thermodynamics. ² Photon. Photoelectric effect. Wave-particle duality. Electron volts. Bohr model of H atom – basic ideas. ² Electron as a wave. Diffraction, interference. Uncertainty principle. Pauli exclusion principle Lasers, chemical bonding
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PHY102 Recap ± At atomic level classical distinctions of wave and particle blur ² Light as photons E=hf, electron as wave λ =h/p ² Uncertainty principle Δ x Δ p>h important for reconciling these differing concepts ² Understand discrete energy levels/spectra using ideas of wave theory ² Wave function tells us where the particle is most likely to be found – quantum mechanics predicts not definite outcomes but only probabilties ….
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PHY102 Iron atoms confine electron (waves)
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PHY102 Java simulations of quantum systems ± Electron in potential well. Represented by spread out wave packet which oscillates back and forth ± Motion of wave packet determined by the Schrodinger equation ± www.falstad.com/mathphysics.html
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PHY102 Atomic structure ± For a H atom at low temperature electron occupies lowest allowed energy state – ground state ±
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This note was uploaded on 05/18/2008 for the course PHY 102 taught by Professor Simoncatterall during the Spring '08 term at Syracuse.

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Lecture19 - Major Concepts in Physics Lecture 19. Prof...

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