J.J. Thomson (jan 1, 1856 – jan 1, 1940)
Description:
J.J. Thomson was an English philosopher that was lived from 1856-1940. During his research on atoms, he discovered electrons, noted an atom can be divided, and concluded atoms have positive cores with negative fields around them. He is famous for the Plum Pudding Model (1904), which shows a field of negatively charged particles distributed throughout a sea of positive charges. In his experiment, called the Cathode Ray Tube Experiment (1897), he aimed high-vacuum cathode rays at electrically charged plates and magnets and interpreted deflection of such rays as indication of negatively-charged bodies much smaller than atoms.
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Atomic Theory Time Line Project
By Jackson Dabagia
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