Famous Dead Peeps

By andrew.pfender

  • Thales of Miletus

    600 B.C.
    Declared everything is made of water.

  • Democritus

    460 - 370 B.C.
    Thought everything was made of atoms.

  • Aristotle

    384 - 322 B.C.
    Thought everything was earth, water, air, and fire

  • Sir Isaac Newton

    1704
    Thought that atoms moved around and were small

  • Dalton

    1803
    Found the properties in gases and matter

  • Becquerel

    1896/1897
    Discovered radioactivity

  • J. J. Thomson

    1897
    He discovered the electron

  • Ernest Ruthaford

    1904-1911
    Atoms contain a nucleus made of protons surrounded by electrons

  • Gold Foil Experiment

    Ruthaford fired helium atoms at a gold sheet of paper but they hit the nucleus and bounced back. He didn't think they would.

  • Francis Aston

    1922
    Discovered and studied isotopes. Also did the whole number rule.

  • Bohr

    1915
    Created Bohr model and said everything was on fixed path's and couldn't be inbetween.

  • Schrodinger

    1926
    Used math equations to describe where electrons will probably be

  • James Chodwick

    1932
    Discovered evidence towrds the existance of Neutrons

  • Robert Milikan

    1908 -1917
    Determined the charge and mass of an electron