History of the Atom Timeline by Brea Brown

Dalton

Feb 21, 1787

Discovered
- contributed to the Atomic Theory and discovered color blindness
Method
- Observations about atoms
Dalton, John. "John Dalton." Http://the-history-of-the-atom.wikispaces.com. N.p., 2014. Web. 24 Feb. 2014. http://the-history-of-the-atom.wikispaces.com/John+Dalton.

Rutherford

Feb 21, 1911

Discovered
- invented a dectector for electricmagnetic waves
Method
- collaborated with H. Geiger
Dalton, John. "John Dalton." Http://the-history-of-the-atom.wikispaces.com. N.p., 2014. Web. 24 Feb. 2014. http://the-history-of-the-atom.wikispaces.com/John+Dalton.

Bohr

Feb 21, 1912

Discovered
-electrons jump between energy level
Method
- used many ideas from Rutherford
"Home." Http://the-history-of-the-atom.wikispaces.com/Niels+Bohr. Tangient LLC, n.d. Web. 27 Feb. 2014.

Thomson

Feb 21, 1916

Discovered
- electrons & noticed it cant be divided
Method
- model & put his information in books
"J.J. Thomson - Biography". Nobelprize.org. 19 Nov 2010

Heisenberg & Schrodinger

Feb 21, 1926

Discovered
- Uncertainty Principle
Method
- studied and went of past ideas
"Werner Heisenberg." Wikipedia, the Free Encyclopedia. Web. 30 Nov. 2010.

Democritus (400 BC)

Feb 19, 2001

Discovered
- first to discover the Atomic Theory which stated all objects are made and cant be divided .
Mehtod
-gathered evidence from experiments "Democritus." The-History-of-the-Atom -. Creative Commons Attribution Share, 2014. Web. 20 Feb. 2014.

Aristotle (335 BC)

Feb 21, 2001

Discovered
- he discovered that all material were not made of atoms, but those of the 4 elements.
Method
- wrote books
"Aristotle." Angelfire: Welcome to Angelfire. Web. 30 Nov. 2010.