Atomic Theory

  • Isaac Newton

    Newton proposed a mechanical universe with small solid masses in motion
  • John Dalton

    Proposed an "atomic theory" with spherical solid atoms based upon measurable properties of mass.
  • Michael Faraday

    Studied the effect of electricity on solutions, coined term "electrolysis" as a splitting of molecules with electricity, developed laws of electrolysis. Faraday himself was not a proponent of atomism.
  • J. Plucker

    Built one of the first gas discharge tubes ("cathode ray tube").
  • James Clerk Maxwell

    Proposed electric and magnetic fields filled the void.
  • Aston

    Dscovered isotope
  • Neils Bohr

    Developed an explanation of atomic structure that underlies regularities of the periodic table of elements. His atomic model had atoms built up of sucessive orbital shells of electrons.

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