Photoelectric Effect History: A Battle of Einstein vs. Lenard

Einstein won his Nobel Prize for the photoelectric effect, but why? He was more famous for relativity. It all has to do with a man named Philipp Lenard. Lenard's experiments inspired Einstein, and Lenard at first befriended Einstein but then turned and made his life a misery. This is a fascinating story of how a brilliant scientist can descend into madness.
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Hertz discovering Radio:
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History of Cathode Tubes:
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Видео Photoelectric Effect History: A Battle of Einstein vs. Lenard канала Kathy Loves Physics & History