History of the Atom Timeline by Nathan Keller and Sam Cottano

By nathan.keller2018
  • 400

    Democritus BC

    Democritus BC
    He discorvered that the atom was invisisble. He based his discovery on natural occureneces. "Democritus - Biography." Democritus. The European Graduate School, n.d. Web. 11 Feb. 2015.
  • Period: 400 to

    Timespan

  • Dalton

    Dalton
    Thing can be broken into elements on the periodic table. He used experiaments to find how things reacted. "What Dalton Discovered." Dalton's Model. Boise State, n.d. Web. 24 Feb. 2015.

  • Thomson

    Thomson
    Atoms consist of subatomic parcticles called protons and electrons and they are positivly and negativly charged. He used the Gold Foil Experiment. "What Thompson Discovered." Thompson's Model. Boise State, n.d. Web. 23 Feb. 2015.

  • Rutheford

    Rutheford
    Atoms mass is concentrated in the tiny nucleous. He used the Gold Foil Experiment and shot alpha parcticles. "Rutherford Model of the Atom." Rutherford Model of the Atom. Indiana University Northwest, n.d. Web. 19 Feb. 2015.

  • Bohr

    Bohr
    Electrons could only travel in a certain set or orbit around the nucleous. He used math. "What Bohr Discovered." Bohr's Model. Boise State, n.d. Web. 25 Feb. 2015.

  • Heisenberg and Schrodinger

    Heisenberg and Schrodinger
    Make a mathmatical equation describing the wave line behavior. He used a two-split Experiments. "Heisenberg - Quantum Mechanics, 1925-1927: The Uncertainty Principle." Heisenberg - Quantum Mechanics, 1925-1927: The Uncertainty Principle. Boise State, n.d. Web. 25 Feb. 2015.