1. Heisenberg’s contribution to the atomic model By: Dalton Hatton Dec 05, 1901 - Feb 01, 1976

2. 1923 Heisenberg finished his formal work for a doctorate with a dissertation on hydrodynamics. Beyler, R. (14, November 11). Werner Heisenberg. Retrieved from http://www.britannica.com/EBchecked/topic/259761/Werner-Heisenberg/279994/World- War-II

3. 1925 Werner Heisenberg formulated a quantum mechanics paper based on a matrixes. Werner Heisenberg - Facts. (2014, November 30). Retrieved from http://www.nobelprize.org/nobel_prizes/physics/laureates/1932/heisenberg- facts.html

4. 1927 An early attempt of the uncertainty principle appeared in a 1927 paper by Heisenberg, a German physicist who was working at Niels Bohr's institute in Copenhagen at the time, titled "On the Perceptual Content of Quantum Theoretical Kinematics and Mechanics". Jha, A. (2013, November 30). Retrieved from http://www.theguardian.com/science/2013/nov/10/what-is- heisenbergs-uncertainty-principle

5. Note Heisenberg's uncertainty principal states that that you cannot know both the location and the momentum of particles. uncertainty principal equation Creighton, J. (2014, September 24). What is the Heisenberg Uncertainty Principle? Retrieved from http://www.fromquarkstoquasars.com/heisenberg-uncertainty- principle/

6. 1932 Werner Heisenberg concluded that charged particles bounce photons of light back and forth. This exchange of gives a way for the electromagnetic forces to act between the particles. The theory states that a proton shoots a photon at the electron, and the electron shoots a photon back at the proton. Walker, J. (2004, November 1). Atoms. Retrieved from http://www.nobeliefs.com/atom.htm

7. 1958 He proposed a unified field theory which news papers referred to as his “World Theory”. Beyler, R. (14, November 11). Werner Heisenberg. Retrieved from http://www.britannica.com/EBchecked/topic/259761/Werner- Heisenberg/279994/World-War-II