John and Mike's Timeline

  • Antoine Lavoisier

    Antoine Lavoisier
    Discovery that Mass remains the same in different forms
  • Joseph Louis Proust

    Joseph Louis Proust
    Discovered matter is neither created nor destroyed.
  • John Dalton

    John Dalton
    Created the first atomic theory. Made the solid sphere model of an atom.
  • Michael Faraday

    Michael Faraday
    Discovered electrolysis, which is the splitting of molecules with electricity.
  • Henri Becquerel

    Henri Becquerel
    Discovered that some chemicals spontaneously decompose and give off very penetrating rays.
  • J.J. Thomson

    J.J. Thomson
    Detected electrons using cathodrayed tube. The inventor of the "plum pudding" model.
  • Ernest Rutherford

    Ernest Rutherford
    Discovered that the atom is made up of empty space. Also studied radiation emitted from uranium and thorium. Original inventor of the Planetary model.
  • Marie and Pierre Curie

    Marie and Pierre Curie
    Marie discovered radioactivity. Pierre discovered polynium and radium.
  • Max Planck

    Max Planck
    Used the idea of quanta to explain hot glowing matter.
  • Albert Einstein

    Albert Einstein
    Published the famous equation e=mc2.
  • Robert Milikan

    Robert Milikan
    Determined the charge and the mass of an electron. Also had interesting work on the photoelectric effect.
  • Niels Bohr

    Niels Bohr
    Discovered electrons exist in energy levels. Modified Rutherford's planetary model.
  • Louis Debroglie

    Louis Debroglie
    Discovered that electrons had a duel nature. They are similar to both particles and waves.
  • Erwin Schrodinger

    Erwin Schrodinger
    Made an atomic model based on probability. Discovered the electron cloud.
  • James Chadwick

    James Chadwick
    Discovered nuetrons.
  • Glen T. Seaborg

    Glen T. Seaborg
    Synthesized 6 transuranium elements and suggested a change in the layout of the periodic table.