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18/12/1856 Electron discoverer is born

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Discovery of the Electron: Cathode Ray Tube Experiment

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J.J.Thompson - Cambridge, England

English physicist Joseph John Thomson is best known for his discovery and identification of the electron. It was the first subatomic particle known to humanity. Thompson also researched the composition of cosmic rays. He was the first person who performed what is now called the mass spectrometry.
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