"History of the Atom Timeline by Paris Barfield and Gabrielle Lillie"

By paris.barfield2018
  • 100

    Democritus (400B.C.)

    Democritus (400B.C.)
    Democritus discovered the atom. He discovered this by his curiosity of the abilty to cut a substance so small that it woud not be possible to cut it anymore. Bennett, Linda. "What Democritus Thought." Democritus Model. N.p., 2012. Web. 18 Feb. 2015. Staffman, Mark. "Atom." World Book. N.d. World Book Advanced. Web. 20 Feb. 2015. "Redirect Notice." Redirect Notice. N.p., n.d. Web. 25 Feb. 2015.

  • John Dalton

    John Dalton
    Dalton discovered that atoms of elements unite to form chemical compounds, and can't be created or destroyed in a chemical reaction, only the grouping changes. He used evidence from multiple experiments. He thought the atom looked like it was made of tiny balls arranged in individual patterns. He called his theory "Dalton's Atomic Theory."
    "Nuclear Energy." Nuclear Energy. N.p., http://www.odec.ca/projects/2009/geng9p2/scienceconcept.htm
    Bennett, Linda. "What Dalton Discovered." Dalton's Model.

  • Thompson

    Thompson
    He discovered that the electric particles have a negative charge. to discover this he used the Cathrode Ray Tube method. Picture: "Redirect Notice." Redirect Notice. N.p., n.d. Web. 25 Feb. 2015. "What Thompson Discovered." Thompson's Model. N.p., 2012. Web. 23 Feb. 2015.

  • Rutherford

    Rutherford
    Rutherford discovered the nucleus of an atom. He used gold foil to discover the nucleus. "Rutherford Model of the Atom." Rutherford Model of the Atom. N.p., n.d. Web. 23 Feb. 2015. "Rutherford Model of the Atom." Rutherford Model of the Atom. N.p., n.d. Web. 23 Feb. 2015.

  • Niels Bohr

    Niels Bohr
    Bohr discovered the features of hydrogen atoms and that electrons can only travel in certain orbits at certain distances using math models.He called his model The Bohr Model.
    PICTURE: "Questions and Answers." Jefferson Lab. Ed. S. Gagnon. N.p., n.d. Web. 24 Feb. 2015. http://education.jlab.org/qa/atom_model.htm
    EVENT: Durga Prusad, M. "Neils Bohr and the Atomic Structure." EBSCO Host. N.p., n.d. Web. 23 Feb. 2015. http://connection.ebscohost.com/c/articles/92887555/niels-bohr-atomic-structure.

  • Erwin Schrodinger

    Erwin Schrodinger
    Schrodinger discovered that electrons are waves that don't move, but carry information about where the electron probably is. He made his discovery using quantum numbers. His model is The Schrodinger Model.
    Miller, N. "The Curious Physicist." The Curious Physicist. N.p., n.d. Web. 24 Feb. 2015. https://thecuriousphysicist.wordpress.com/tag/de-excitation/
    "Schrödinger's Atom." Schrödinger's Atom. N.p., n.d. Web. 23 Feb. 2015. http://www.colorado.edu/physics/2000/quantumzone/schroedinger.html.