History of the Atom

By william.granville201
  • 400

    Democritus

    Democritus
    He claimed everything was made up of atoms. He also discovered that atoms are geometrically and indivisbly made.
    He dicovered this by observation.
    He discovered that there were infintite numbers and types of atoms.
    Coffey, Jerrry. "Democritus Atom." Universe Today. N.p., 22 Mar. 2010. Web. 19 Feb. 2015.
  • Period: 400 to

    History of the Atom

  • Dalton

    Dalton
    He discovered everything had atoms and that atoms were indivisible.
    He gathered his information from experiments.
    Williams, Matt. "John Dalton's Atomic Model." Universe Today. N.p., 01 Dec. 2014. Web. 20 Feb. 2015.

  • Thomson

    Thomson
    He discovered that protons and electrons were uniformly mixed throughout the atom. He also discovered that atoms aren't solid and indivisible.
    In order to find this out he used the Cathode Ray Tube experiment.
    DeWitt, Tyler. "GaggleTube Video - Discovery of the Electron: Cathode Ray Tube Experiment." GaggleTube Video - Discovery of the Electron: Cathode Ray Tube Experiment. N.p., n.d. Web. 23 Feb. 2015

  • Bohr

    Bohr
    He discovered revoloutionary idea that electron "jump" between many levels in a quantum fashion.
    He discovered this by observing quaantum theory.
    Rutherford and Bohr Describe Atomic Structure 1913." PBS. PBS, n.d. Web. 23 Feb. 2015.

  • Rutherford

    Rutherford
    He discovered that electrons are on the outside and a dense nucleus where the protons and nuetrons are in the middle.
    He used the gold foil experiment.
    Rutherford and Bohr Describe Atomic Structure 1913." PBS. PBS, n.d. Web. 23 Feb. 2015.

  • Heisenberg and Schrodinger

    Heisenberg and Schrodinger
    He discovered the electron sends waves of where it probably is.
    He discovered this by observing Bohrs model.
    They call this model the Schrodinger model.
    "Schrödinger's Atom." Schrödinger's Atom. N.p., n.d. Web. 25 Feb. 2015.