Famous Dead Guy Project

By Brandon.bertinotti
  • 101

    Thales of Miletus

    620 B.C.E
    The 1st to think of the atom
    Did not have an atomic theory
  • 101

    Democritus

    Democritus
    440 B.C.E
    Cutting the cheese: Thought experiment
    1st atomic theory
    Thought matter was formed of soli, massy impenetrable particles
  • 101

    Aristotle

    340 B.C.E.
    Did not perform any experiments
    Did not believe in atoms

  • Isaac Newton

    Believes matter is formed of soild, massy impenetrable particles
    -discovers atoms are held toegther

  • John Dalton

    -All matter is made up of tiny particles called atoms
    -All atoms of given elements are alike, but are different from the atoms of any other element
    -A chemical reaction involves a rearrangement of atoms, not a change in the atoms themselves

  • Henry Becquerel

    Discovered radioactivity

  • J.J Thompson

    Plumb Pudding theory
    Discovered Electrons

  • Robert Andrews Milikan

    Oil drip experiment
    Discovered charge of individual electrons

  • Ernest Rutherford

    Theory-Atoms mostly empty space and that nucleus had charge and electrons are negative

  • Niels Bohr

    Primitive Hydrogen model
    -Believes electrons have specific paths that orbit the nucleus

  • Francis Aston

    Firat to study isotopes
    mass spectograph

  • Erwin Schrodinger

    Used math equations to find the probability of an electron would be in a certain position
    Quantum Mechanical Model

  • James Chadwick

    Discovered the neutron