-----Original Message-----
From: Phys-l [mailto:phys-l-bounces@phys-l.org] On Behalf Of Bruce Sherwood
Sent: Wednesday, August 07, 2013 12:59 AM
To: Phys-L@Phys-L.org
Subject: Re: [Phys-L] Animation of motion in a potential energy well
Here's another old VPython lecture demo program in GlowScript dress. It illustrates the basics of bright-line and dark-line spectra: