History of the Atom TimeToast Timeline by Dannie Gates

By dannie.gates2018
  • 400

    Democritus (400 B.C.)

    Democritus (400 B.C.)
    Proposed the idea of the atom. He argued that the world consisted of an infinite amount of atoms. he thought the atom looked like a circle.
    "Democritus Atom." Universe Today. N.p., 22 Mar. 2010. Web. 23 Feb. 2015.
    "What Democritus Thought." Democritus Model. N.p., n.d. Web. 23 Feb. 2015.

  • Dalton

    Dalton
    He belived that matteer is invicible atoms. And that atoms are arranged in different nixtures and compounds. He used a method that was made up of types of "flowers". Claimed that it looked like a biillard ball.
    "John Dalton's Atomic Model." Universe Today. N.p., 01 Dec. 2014. Web. 23 Feb. 2015.

  • Thomson

    Thomson
    He discovered that eectrons are in models. And that atoms have tiny negatively charged particles inside that are electrons. Claimed it looked like Plum-Pudding.
    "GaggleTube Video - Discovery of the Electron: Cathode Ray Tube Experiment." Electron: Cathode Ray Tube Experiment. N.p., n.d. Web. 23 Feb. 2015.

  • Rutherford

    Rutherford
    Rutherford tested Thomson's hypothesis by devisinng his " Gold Foil" experiment. He wasn't sure how the protons and electrons were arranged within the atom.
    "GaggleTube Video - Discovery of the Nucleus: Rutherford's Gold Foil Experiment." GaggleTube Video - Discovery of the Nucleus: Rutherford's Gold Foil Experiment. N.p., n.d. Web. 23 Feb. 2015.

  • Bohr

    Bohr
    He belived that electrons existed in set orbits around the nucleus. He gathered evidence from plamck's Quantum theroy.
    Stanley, Matthew. "Niels Bohr." Niels Bohr. N.p.: n.p., n.d. Web. 19 Feb. 2015.

  • Heisenberg and Schrodinger

    Heisenberg and Schrodinger
    The atoms sketch out the shape of an object in an irregular motions. They used the Two-Slit experiment. Claimed that it looked like quantim mechanical model orbital.
    "Schrödinger's Atom." Schrödinger's Atom. N.p., n.d. Web. 23 Feb. 2015.