History of the Atom Timeline by Tara & Elliot

By catdogdragon
  • 350

    Aristotle (B.C.)

    Aristotle (B.C.)
    Aristotle said that atoms didn't exist, and his idea was widley accepted for a long time. He used scientific folts. "Timeline of the Atom." : Aristotle. N.p., n.d. Web. 27 Feb. 2014.
  • 400

    Democritus (B.C.)

    Democritus (B.C.)
    He discovered the atom by using theories from observations. He thought that the atom looked like a sphere with no subatomic particles. "Timeline of the Atom." : Democritus of Abdera. N.p., n.d. Web. 27 Feb. 2014.

  • Dalton

    Dalton
    He showed that atoms existed, and his model showed what he thought atoms looked like. "Timeline of the Atom." : John Dalton- 1803, 1805, 1808. N.p., n.d. Web. 27 Feb. 2014.

  • Thomson

    Thomson
    He discovered electrons through experiments, and he thought it looked like plum pudding. "Timeline of the Atom." : Joseph John Thomson- 1897. N.p., n.d. Web. 06 Mar. 2014.

  • Rutherford

    Rutherford
    He discovered that negatively-charged electrons scattered about in it like raisins in plum pudding. Experimental. "Timeline of the Atom." : Ernest Rutherford. N.p., n.d. Web. 27 Feb. 2014.

  • Bohr

    Bohr
    He discovered that electrons orbit in set patterns.
    Foil experiment. "Timeline of the Atom." : Niels Bohr. N.p., n.d. Web. 27 Feb. 2014.

  • Heisenburg & Schrodinger

    Heisenburg & Schrodinger
    He depicts the floating motion of the electrons, rather then them having a set path of travel; not definite. Mathematical models. "Timeline of the Atom." : Erwin Schrodinger. N.p., n.d. Web. 27 Feb. 2014.