Emilio Segre Visual Archives/american Institute Of Physics
Photograph - Photograph
Max Planck (1858-1947), German physicist, in his study at home in Berlin, Germany. Planck pioneered quantum mechanics, revolutionising classical physics. His 1900 paper describing black body radiation proposed that radiation must be emitted or received in energy packets (quanta), rather than continuously. Quantum theory was fully accepted after its successful prediction of the photoelectric effect (Einstein, 1905) and of the electronic structure of atoms (Bohr, 1913). Planck received the 1918 Nobel Prize in Physics for his work.
October 7th, 2018
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