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Democritus was a student of Socrates, as well as how he theorized that everytjingis made up of invisible atoms.
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He discovered that atoms cannot be broken down.
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From his observations he made postulates.
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He did a sucessful tube experiment, called the cathode ray tube.
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The gold foil experiment.
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He made an electron model, called the plum pudding model.
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Made the break through saying that all atoms are mostly made up of nothing.
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Created the Bohr model.
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Organized electrons into energy levels.
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neutrons which were discovered by James Chadwick
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made of by many of scientist
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Isotopes
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uncertainty theory
