Website Detail Page

published by the Physics Education Technology Project
Available Languages: English, Spanish, Greek, Portuguese
This webpage contains a simulation that provides qualitative pictures of alpha radiation, fission of a Uranium 235 nucleus, and controlled and uncontrolled nuclear chain reactions. Evolution of the processes over time is shown. Variables such as the number of nuclei and the containment of reactions can be altered to demonstrate the statistical nature of the reactions.

Sample learning goals as well as a teacher's guide for the simulation are available.

This simulation is part of a large and growing collection. It has been designed using principles from physics education research and refined based on student interviews.

Please note that this resource requires at least version 1.4.2_17 of Java Applet Plug-in.
Subjects Levels Resource Types
Modern Physics
- Nuclear Physics
= Nuclear Reactions
= Radioactivity
- High School
- Lower Undergraduate
- Informal Education
- Upper Undergraduate
- Instructional Material
= Activity
= Curriculum support
= Interactive Simulation
- Audio/Visual
= Movie/Animation
Categories Intended Users Ratings
- Application
- Learners
- Educators
  • Currently 4.0/5

Rated 4.0 stars by 2 people

Want to rate this material?
Login here!

Access Rights:
Free access
This material is released under a Creative Commons Attribution-Noncommercial 3.0 license. Additional information is available.
Rights Holder:
PhET and University of Colorado
Alpha Radiation, Atom, Chain Reaction, Fission, Neutron, Nuclear Reactor, Proton, Uranium, nuclear power
Record Cloner:
Metadata instance created September 2, 2006 by Gifford Weber
Record Updated:
August 18, 2016 by Lyle Barbato
Last Update
when Cataloged:
October 1, 2008
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
(Physics Education Technology Project, Boulder, 2005), WWW Document, (
PhET Simulation: Nuclear Fission, (Physics Education Technology Project, Boulder, 2005), <>.
APA Format
PhET Simulation: Nuclear Fission. (2008, October 1). Retrieved January 20, 2017, from Physics Education Technology Project:
Chicago Format
Physics Education Technology Project. PhET Simulation: Nuclear Fission. Boulder: Physics Education Technology Project, October 1, 2008. (accessed 20 January 2017).
MLA Format
PhET Simulation: Nuclear Fission. Boulder: Physics Education Technology Project, 2005. 1 Oct. 2008. 20 Jan. 2017 <>.
BibTeX Export Format
@misc{ Title = {PhET Simulation: Nuclear Fission}, Publisher = {Physics Education Technology Project}, Volume = {2017}, Number = {20 January 2017}, Month = {October 1, 2008}, Year = {2005} }
Refer Export Format

%T PhET Simulation: Nuclear Fission
%D October 1, 2008
%I Physics Education Technology Project
%C Boulder
%O application/java

EndNote Export Format

%0 Electronic Source
%D October 1, 2008
%T PhET Simulation: Nuclear Fission
%I Physics Education Technology Project
%V 2017
%N 20 January 2017
%8 October 1, 2008
%9 application/java

Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

This resource is stored in a shared folder.

You must login to access shared folders.

Save to my folders



Similar Materials

Featured By

Physics To Go
Nov 1 - Nov 16, 2009