Some nice treatments found on the web

Georgia State HyperPhysics

An artist's view: Kenneth Snelson's Picture

Bob Jacobs the Chemistry Coach

Randal Telfer at Johns Hopkins University Everything you wanted to know ...

Some nice applets found on the web

Vibrating charges from the University of Colorado at Boulder

de Broglie Waves from John Winn at Dartmouth Chemistry Dept.

Lasers: How do they work

From Oxford: Easy Laser Physics

From the University of Southhampton, Averil Macdonald's  Pumping applet

Mirror Box

Imagine some photons inside a mirror box, all made of mirrors.