Date: Tue Oct 7 19:56:13 2008

Author: Richard Berg

Subject: Re: Nuclear Chain Reaction Model

Post:

Try,

http://www.physics.umd.edu/lecdem/services/demos/demosp4/p4-62.htm

The one on the right is best.

Dick
***********************************************************************
Dr. Richard E. Berg, Professor of the Practice
Director, Physics Lecture-Demonstration Facility
U.S. mail address:
Department of Physics
University of Maryland
College Park, MD 20742-4111
Phone: (301) 405-5994
FAX: (301) 314-9525
e-mail reberg@umd.edu
www.physics.umd.edu/lecdem
***********************************************************************