Frog Pond
	("hello world" for engineers)
		   ---------  

We throw stones into a pond.
Each splash creates a circular wave front
that adds, bounces, diffracts.

Old engineers use Fortran and random numbers for stones.
Young engineers might click someplace on the pond.

Real waves are made with finite differences.

This 30 line program (frogs.rst) is in the public domain.  Enjoy.
Enjoy the .mpeg movie too (213K) at

	 http://sepwww.stanford.edu/sep/jon/frogs/

Or check out Ken Lenga's Hot Java solution at

	 http://sepwww.stanford.edu/sep/krl/FrogPond.html