Lecture2Notes - Chem 120A 01/20/06 Spring 2006 READING:...

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Chem 120A Probability Theory and Double-Slit Experiments 01/20/06 Spring 2006 Lecture 2 READING: Engel: Section 1.1 and Appendix A.1 (sections 1.2-1.4 offer a historical motivation for the study of quantum mechanics; you may find those sections interesting, but you will not be responsible for that material) Feynman (CPL): Chapter 6 Feynman (FL3): Chapter 1 Two rules for probabilities Recall the experimental setup from the last lecture: x y Source Detector Figure 1: An experiment for considering probability. Particles are emitted from the source with random velocities. The particles then strike the detector at some point along y . The detector counts the number of strikes at each point. We defined the total probability of finding a particle at either a point, y 1 , or another point y 2 as P ( y 1 , y 2 )= P ( y 1 )+ P ( y 2 ) . The total probability of finding a particle anywhere on the detector was then defined as the sum over the probabilities at each point, P ( { y } )= N i = 1
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This note was uploaded on 09/29/2009 for the course CHEM 120A taught by Professor Whaley during the Spring '07 term at University of California, Berkeley.

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Lecture2Notes - Chem 120A 01/20/06 Spring 2006 READING:...

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