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Home > AP Courses and Exams > Course Home Pages > Atomic Energy Levels Atomic Energy Levels More About Atomic and Nuclear Physics... Photons and the Photoelectric Effect Wave-Particle Duality Nuclear Physics Lecture Notes and Tutorial Atomic Spectra This lesson contains detailed explanations of background material, annotated diagrams and illustrations, and solved examples.   Atomic Models and Spectra Exploration Electron Excitation and Emission This site from Florida State University explores how photon energy is absorbed by an electron to elevate it into a higher energy level and how the energy can subsequently be released, in the form of a lower energy photon, when the electron falls back to the original ground state.   Electron Excitation and Emission See also... AP Physics Web Guide AP Physics B Course Home Page AP Physics C: Electricity and Magnetism Course Home Page AP Physics C: Mechanics Course Home Page Teachers' Resources

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