Atom

Timeline created by Whalena
  • Period: to

    History of atom

  • Antione Lavoisier

    Antione Lavoisier
    Born France 1743 Paris
    Made the distinction between elements and compounds
  • Charles-Augustin de Coulomb

    Charles-Augustin de Coulomb
    Born France 14 Jun 1736
    Made a law that the force between two electrical charges and inversly proportional to the square of the distance between them.
  • John Dalton

    John Dalton
    Born England 6 Sep 1766
    Created the atomic theory which stated that atoms are incredibley small particles that are indestructible
  • G.J Stoney

    G.J Stoney
    Born Ireland 15 Feb 1826
    Found that electricity is negatively charged eletrons
  • J.J Thomson

    J.J Thomson
    Born England 18 Dec 1856
    Found the electron and a model of the atom called the plum pudding model
  • Max Planck

    Max Planck
    Born German 28 Apr 1858
    Createdthe quantum theory explaning the behaviour of energy on the atomic level
  • Robert Millikan

    Robert Millikan
    Born America 22 Mar 1868
    Found the electrical charge of an electron
  • Ernest Rutherford

    Ernest Rutherford
    Born NZ 30 Aug 1871
    That the mass of an atom is concentrated in the centre of the atom in a positively charged ball found during his gold foil experiment
  • Neils Bohr

    Neils Bohr
    Born Denmark 7 Oct 1885
    Electrons circled the atom in large orbits. He also dicovered atoms emit or absorb radiation when jumping between moving and stationary states
  • Hans Geiger

    Hans Geiger
    Born Germany 30 Sep 1882
    Invented the geiger counter, a devise which measures radioactivity
  • James Chadwick

    James Chadwick
    Born England 20 Oct 1891
    Found the nuetraly charged particles neutrons
  • Otto Hahn

    Otto Hahn
    Born Germany 8 Mar 1871
    Created nuclear fission where a nulcleus slits into two nuclei
  • Murry Gell-Mann and George Zweig

    Murry Gell-Mann and George Zweig
    Glenn-Mann: Born America 15 Sep 1929
    Zweig: Born Russia 30 May 1937
    Came up with quarks which are little bits of matter