Famous Dead Guys

  • 101

    Thales - 620 BC

    Was the first person to investigate the basic principle of the atom.
  • 101

    Democritus - 440 BC

    He disovered the 1st atomic theory.
  • 101

    Aristotle - 340 BC

    He didn't believe in the atomic theory.
  • Sir Isaac Newton

    He said that atoms are held together by attractions or forces.
  • John Dalton

    Did the Atomic Theory experiment. Said: 1. All matter is made up at tiny particles called atoms. 2. All atoms of a given element are alike but are different. 3. Compounds are formed when atoms of different elements combine. 4. A chemical reaction involves a rearrangment of atoms, not a change.
  • Henri Becquerel

    He discovered radioactivity.
  • J. J Thompson

    Had the Cathode Ray experiment. He discovered electrons by the plum pudding model.
  • Robert Milikan

    He had the Oil Drop experiment. He found a charge in individual electrons.
  • Gold Foil Experiment

    Helium nuclei were fired through a thin gold sheet into a zinc sulfide and it proved that part of the atom had a positive charge and that it had mass.
  • Ernest Rutherford

    His atomic model was The Nuclear Atom.
  • Niels Bohr

    Theory on electrons and that electrons are on an orbit.
  • Francis Aston

    In the Mass Spectrograph experiment he found that there was isotopes
  • Erwin Schodinger

    His experiment was the Quantum Mechanical Model of the Atom. He used math equation to find the probability on election would be in a certain position.
  • James Chadwick

    He discovered the Neutron.