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Experiment he did was finding out the world is made up of empty space and tiny particles. He also contributed too knowing that matter can be broken down infinitely number of times
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all Matter is made up of smaller atoms
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Found that charged particles from cathode were negatively charged
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Gold foil experiment and he contributed by proving the existence of small matter in the center of atoms
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The discovery of electron and radioactivity and the models of atoms and he added a contribute of a proposed theory of hydrogen atom based on quantum theory
