LectureQ5

LectureQ5 - Chapter 5 Special Note: Professor Heinz will be...

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4/8/2004 H133 Spring 2004 1 Chapter 5 We have seen that light can behave like a particle and we have seen particles can act like waves. The area of physics that studies these behavior is called Quantum Mechanics. We must adjust our thinking from classical particles and waves to one where our intuition will fail us. We can often get caught up in “That can’t be!” because we are use to thinking in a “classical” sense. Moore likes to use the word “quanton”, I find it a little cumbersome and I will use “quanta” (plural) or just “particle” but understand we mean something that can exhibit both classical “particle” and classical wave like behavior. In order to investigate some of the strange features of quantum mechanics let’s create a simple “experiment” like we did with the photoelectric effect and see what observations we make. Special Note: Professor Heinz will be lecturing on this chapter. He may not necessarily follow these notes. I provide them for completeness.
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4/8/2004 H133 Spring 2004 2 Experiment Single-Quanton Interference from 2 Slits Filters setup so there is only 1/1000 chance there is a photon between the last filter and detector. So only 1 photon is moving through the experiment at once. ± γ can’t influence each other Wave Model Particle Model LASER Advanced Photon Detectors capable of detecting single photons
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4/8/2004 H133 Spring 2004 3 Interference Experiment Now the actual experiment ± Register discrete interactions of individual photons ± Many individual photons seem to form interference pattern. (Prob. of location governed by wave-like prop.) ± Interaction at detector is “particle-like” ± Trajectories of individual photons are random ±
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This note was uploaded on 06/03/2011 for the course H 133 taught by Professor Furnstahl during the Spring '11 term at Ohio State.

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LectureQ5 - Chapter 5 Special Note: Professor Heinz will be...

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