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Re: phase vs group vel.



Tim Usher (tusher@wiley.csusb.edu) wrote:

Can anyone suggest a good source for a computer demo which depicts the
difference between group velocity and phase velocity?

Thanks
Tim Usher
Physics
CSUSB

I have a QuickTime movie (518K) on my web site that shows this distinction for
nonrelativistic quantum-mechanical waves (whicha re challenging to show in a
demonstration!). The wave shown is an equal mixture of a wave with wavenumber k
= 0.95 and one with k = 1.05. You might want to take a peek --- the URL is

http://www.physics.ucsb.edu/~airboy/movies/quantum/quantum_beats.mov

I created this using an Excel 5.0 spreadsheet. If you'd like a copy of this, let
me know.


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Roger A. Freedman
Department of Physics and College of Creative Studies
University of California, Santa Barbara

Mailing address:
Department of Physics
UCSB
Santa Barbara CA 93106-9530

E-mail: airboy@physics.ucsb.edu
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