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How to Find the Energy Level of a Harmonic Oscillator: An Example

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2016-03-26 14:07:13
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Your quantum physics instructor may ask you to find the energy level of a harmonic oscillator. The best way to learn how is through an example. Say that you have a proton undergoing harmonic oscillation with

image0.png

as shown in the figure.

A proton undergoing harmonic oscillation.
A proton undergoing harmonic oscillation.

What are the energies of the various energy levels of the proton? You know that in general,

image2.png

So here are the energies of the proton, in megaelectron volts (MeV):

image3.png

And so on.

Now what about the wave functions? The general form of

image4.png

Convert all length measurements into femtometers

image5.png

where x is measured in femtometers:

image6.png

Here are a couple more wave functions:

image7.png

About This Article

This article is from the book: 

About the book author:

Dr. Steven Holzner has written more than 40 books about physics and programming. He was a contributing editor at PC Magazine and was on the faculty at both MIT and Cornell. He has authored Dummies titles including Physics For Dummies and Physics Essentials For Dummies. Dr. Holzner received his PhD at Cornell.