transition: Quick Facts

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Topics

selection rule electric monopole transition allowed transition superallowed transition forbidden transition oscillator strength energy level excitation optical pumping population inversion electronic configuration metastable state Franck-Hertz experiment Aufbau principle absorption edge

Key People

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Kenneth Geddes Wilson

American physicist

Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.

Physics and Natural Law