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First person to think of the atom.
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He was the first to think of the atomic theory.
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He believed in the Four Elements
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He believed that matte is formed fo solid, massy particles and contributed to the idea of the atomic theory.
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His contribution was Dalton's Atomic Theory.
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Figured out elements could be radioactive.
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Thomson discovered the electron.
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His Oil Drip experiment found the charge of individual electrons.
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He created the Gold Foil Experiment.
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This proved that a portion of the atom was positively charged and relatively heavy.
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Found that the electron has a certain orbit around the nucleus.
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He is the man that found isotopes.
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He used math equations to find the probability an electron would be in a certain position.
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He discovered the neutron.
