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The Greeks theorized that everything was made up of particles. The word "atom" comes from the Greek word "atomos", meaning indivisible.
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Created the theory that everything is made up of atoms.
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Created theories about compound atoms/molecules.
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Discovered the electron.
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Created theories on relativity and quantum mechanics.
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Studied the electric charge of electrons.
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Discovered the nucleus and created a model of the atom.
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Created the famous Bohr model of the atom.
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Originated quantum theory.
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Discovered that atoms have wave properties.
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Discovered the neutron.
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Received a Nobel prize for creating a wave equation and explaining how electrons move around an atom.