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Dalton was an English chemist and teacher who formulated the atomic theory of matter based off of experimental evidence.
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J.J. Thomson was an English physicist whose atomic model was based around the discovery and identification of the electron.
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Ernest Rutherford was physicist from New Zealand whose experiments led him to the discovery of alpha and beta radiation, and earned the title Father of Nuclear Physics.
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Niels Bohr was a Danish physicist whose atomic model was based on an expansion of Rutherford's atomic model.
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Erwin Schrodinger was an Austrian physicist whose atomic model states that electrons don't move in any set path.