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Planck's Hypothesis
In order to explain the frequency distribution of radiation from a hot cavity (blackbody radiation) Planck proposed the ad hoc assumption that the radiant energy could exist only in discrete quanta ...
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Max Karl Ernst Ludwig Planck
Max Karl Ernst Ludwig Planck (1858 - 1947) received the Nobel Prize for Physics in 1918 for his investigations into the quantum theory. His revolutionary idea was that the energy emitted by a ...
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Franck-Hertz Experiment
In 1914, James Franck and Gustav Hertz performed an experiment which demonstrated the existence of excited states in mercury atoms, helping to confirm the quantum theory which predicted that ...
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