Sarah Whitehead Famous Dead Guys

Timeline created by sarahw1516
  • 101

    Thales - 400 BC

    First philosopher and first person to think about what the world was made of
  • 101

    Aristotle - 500 BC

    Believed everything was made of water, fire, air, and earth.
  • 101

    Democritus - 500 BC

    First person to think of a small, undividable particle - the atom
  • Issac Newton

    First experiments, created laws of motion
  • John Dalton

    Major contributor to atomic theory
  • JJ Thompson

    Plum Pudding Model, Cathode Ray Tube
  • Robert Millikan

    Oil drop experiment, found mass of electron
  • Ernest Rutherford

    Gold foil experiment, discovered proton and the nucleus
  • Niels Bohr

    Developed Bohr model, thought electrons traveled in orbits
  • Francis Aston

    Discovered isotopes, mass spectrogram experiment
  • ErwinmSchrödinger

    Discovered Electron clouds
  • Antoine Henri Bequerel

    Uranium experiment, discovered radioactivity