History of Atomic Theory Project

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    Democritus

    Democritus
  • John Dalton

    John Dalton
    john daltonJohn Dalton was born September 6, 1766 and died on July 26, 1844. He says that all matter comes from atoms and cannot be creatred or destroyed.
  • J.J. Thomson

    J.J. Thomson
    jj thomsonJ.J. Thompson was born on December 18, 1856 and died on August 30, discovered the electron and that there were smaller particles inside of the atom.
  • Ernest Rutherford

    Ernest Rutherford
    Ernest RutherfordRutherford was born on Aug 30, 1873 and died on October 19, 1937. He discovered that an atom had a central nucleus and the electrons orbit around it.
  • Niels Bohr

    Niels Bohr
    niels bohrWas born October 7, 1885 and died November 18, 1962. He discovered that electrons orbit around the nucleus on a path that does not cross with other electrons.
  • James Chadwick

    James Chadwick
    ChadwickJames Chadwick was born on October 20, 1891.In 1932 he discovered the existence of the nucleus neutral of eletrical charge.