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Boyle Marotte's law is published
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Gay Lussac's Law is published
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Charles' law is published
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Dalton's Atomic Theory
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Avogadro's law is published
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J.J. Thompson discovers the electron
He used a cathode ray tube and 2 electromagnets to determine the charge of the unknown subatomic particle. -
J.J. Thompson states his Plum Puddinng atomic model
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Ernest Rutherford performs the Rutherford experiment
He discovers that the positive matter is in a very small dense nucleus and that most of the atom is empty space -
Niels Bohr states his postulate of the electron shells which explain the change in the spectra of the atoms
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Wave-particle duality by Louis de Broglie
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The Uncertainty Principle of Heisenberg