This demonstration, performed by Dr. Susanne M. Lee from the University at Albany (State University of New York), is a visualization of the three possible nuclear fission reaction types - subcritical, critical, and supercritical - important in nuclear power plants.

Dr. Lee has designed many of these types of demonstrations. The instructions for this demonstration and many others will be included in the Instructor's Resources on the Instructor's Edition of this Online Learning Center. The Instructor's Resource Guide to accompany College Physics also includes numerous demonstration ideas.

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Nuclear Reactor Demo (15050.0K)
Nuclear Fission Demonstration Instructions (23.0K)

Feel free to use this clip within your lecture or laboratory setting.