History of Atomic Theory

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  • 500 BCE

    Leucippus

    The first introduction of the concept of an atom, and basically consisted of a singular, uncuttable tiny version of the original.

  • Antoine Lavoisier

    Creator of the Law of Conservation and Mass.

  • John Dalton

    Came up with the concept that atoms were "discreet pockets of matter"

  • Joseph John Thompson

    Improved cathode ray research understanding that led to the discovery of electrons.

  • Earnest Rutherford

    Discovered nucleus and electrons through light experiments.

  • Niels Henrik David Bohr

    Created Bohr model based on the mathematics achieved by great scientists/mathematicians of his time

  • Wener Karl Heisonberg

    Came up with the quantum theory, which is that atoms are all just little clouds of dense neutrons, protons, and electrons.