Meltdown at Three Mile Island, a Documentary
Companion site to the PBS show of the same name. Covers "How a Nuclear Reactor Works" and "What Happened," showing the series of events that took place on March 28, 1979. Useful for a quick lesson about Three Mile Island. Also has teacher's guide to the show and a link for ordering the video. Requires Java-enabled browser.
http://www.pbs.org/wgbh/amex/three/

The Particle Adventure
An award-winning site from the Particle Data Group at Lawrence Berkeley National Labs. "A tour of the inner workings of the atom."
http://particleadventure.org

Nuclear Power
Overviews the principles of nuclear fission and its use to generate power, why uranium can be fissioned, n/p ratio and delayed neutrons, moderators, also Chernobyl and 3-Mile Island.
http://www.phy6.org/stargaze/Snuclear.htm

U.S. Fusion Energy Sciences Program
A very comprehensive U.S. Department of Energy site related to fusion research. Provides a large number of links to institutions and organizations, and there is a special fusion education section too.
http://wwwofe.er.doe.gov/

OnScreen Particle Physics
A simulation for Mac and Windows 95/98/NT that allows even beginning students to experience what real particle physics experiments are like. Demo versions available for download.
http://www.onscreen-sci.com/

Atom Builder
A shockwave application that allows the user to add up and down quarks to a hydrogen nucleus to create a carbon nucleus.
http://www.pbs.org/wgbh/aso/tryit/atom/

Contemporary (Nuclear) Physics Education Project (CPEP)
A product of teachers, educators, and physicists located around the world. Charts, brochures, web features, and classroom activities present the current understanding of cosmic rays, radiation, particle physics, fission, fusion, and similar topics. Award-winning site.
http://www.cpepweb.org/

Fusion Energy Education
Leads to several excellent resources which teach about fusion.
http://fusedweb.pppl.gov/

How Stuff Works: How Atom Smashers Work
Tutorial with 28 color illustrations and photographs.
http://www.howstuffworks.com/atom-smasher.htm

Bremsstrahlung
An overview of bremsstrahlung (or stopping radiation). From The Particle Detector BriefBook.
http://rd11.web.cern.ch/RD11/rkb/PH14pp/node16.html

The Internet Plasma Physics Education Experience (IPPEX)
The site "allows students and teachers to participate remotely in scientific research at [America's] largest fusion energy laboratory." Requires Java-capable browser and Shockwave plug-in to be able to use the excellent educational modules. Also has an "ask the expert" forum for fusion-related questions.
http://ippex.pppl.gov/

Cross Section
Introduction to cross section, an important concept in scattering.
http://www.jupiterscientific.org/sciinfo/crosssection.html

Nuclear Science and Technology and How It Influences Your Life
Covers five major application fields: food irradiation, industry, medicine, space, and electricity.
http://www.aboutnuclear.org/

General Atomics Fusion Group Educational Home Page
resources for teachers and students; links to a more technical GAT fusion site
http://fusioned.gat.com/

Nuclear Power Plant Demonstration
Java applet of a basic nuclear power plant. Try to keep the reactor running safely under various failure scenarios.
http://www.ida.liu.se/~her/npp/demo.html

ABC's of Nuclear Science
A comprehensive introduction to nuclear science-- antimatter, beta rays, cosmic radiation, radioactivity, the difference between fission and fusion, and the structure of the nucleus, for starters. Site also provides access to reference and teaching materials and experiments. From Lawrence Berkeley National Labs. Uses frames.
http://www.lbl.gov/abc/

Decays
Introductory information on particle decays produced by the Stanford Linear Accelerator.
http://www2.slac.stanford.edu/vvc/theory/decays.html

Introduction to Particle Physics
Beginners guide to particle physics.
http://blueflag.phys.yorku.ca/yhep/main.html

Leptons
Introductory information on leptons (electrons, muons, taus, and neutrinos).
http://www2.slac.stanford.edu/vvc/theory/leptons.html

Tau Decay Physics
Summary of decay modes and their probabilities.
http://www.lns.cornell.edu/public/CLEO/CLEO3/cleo3/proposal/subsection3_3_3.html

SLAC Visitor Center
Information provided by SLAC for informing the general public about particle physics.
http://www2.slac.stanford.edu/vvc/

Cherenkov Radiation
From The Particle Detector BriefBook.
http://rd11.web.cern.ch/RD11/rkb/PH14pp/node26.html

Antimatter: Mirror of the Universe
A thorough discussion covering all aspects of antimatter.
http://livefromcern.web.cern.ch/livefromcern/antimatter/

Classical & Statistical Thermodynamics & Mechanics Educational Sites
A collection of resources gathered by the Thermodynamics Research Laboratory at the University of Illinois at Chicago.
http://tigger.uic.edu/~mansoori/Thermodynamics.Educational.Sites_html

The Science of Particle Physics
Overview of elementary particle physics experiments and research at Fermilab.
http://www.fnal.gov/pub/inquiring/physics/

Virtual Radioactivity Lab
Explore radioactive decay and half-life with radioactive sources, screens and a geiger detector.
http://home.earthlink.net/~mmc1919/halflife.html

ATLAS Educational Information
The ATLAS Experiment is to be carried out at the Large Hadron Collider (LHC), a particle accelerator facility of the CERN Laboratory in Geneva, Switzerland. Website is intended for people of all ages who are curious about fundamental particles and forces as well as about particle research.
http://atlasexperiment.org/

FusEdWeb
Fusion Energy Educational Web Site at LLNL
http://fusedweb.llnl.gov/

Fusion FAQ Glossary
USENET FAQ glossary on fusion energy.
http://fusedweb.pppl.gov/Glossary/glossary.html

Perspective on Plasmas
Educational information on plasma applications including controlled fusion.
http://www.plasmas.org

Introduction to High Energy Physics and ATLAS
Describes the work of the Hampton University Particle Physics group in the ATLAS project as well as material and links for particle physics and general physics education.
http://www.jlab.org/~cecire/hepathu.html

Reflections on Matter
Atoms to quarks, quantum physics, the big bang, and newer theories about matter.
http://molaire1.club.fr/e_plan.html

CHESS X-ray Visions
Celebration of 100 years since the discovery of X-rays. Elaborates on uses of x-rays and details the research conducted with the CHESS synchrotron located below the Cornell campus.
http://www.chess.cornell.edu/pubs/xrybrchr/

Visual Quantum Mechanics
Instructional units that introduce quantum physics to high school and college students who do not have a background in modern physics or higher level math using interactive computer programs and digital multimedia in an activity based environment.
http://phys.educ.ksu.edu/

Timeline of the Nuclear Age
A chronological record of the nuclear age: links to people, documents and educational units. Explore political and ethical dilemmas of the Nuclear Age.
http://www.nuclearfiles.org/menu/timeline/

Learning Science with Computer Assistance: Physics Topics
A set of simulations to illustrate the historical models of atomic structure and the behavior of light.
http://home.alphalink.com.au/~vmck/

Quantum Universe
Extensive content on 21st century particle physics and the role of particle colliders.
http://www.interactions.org/quantumuniverse/

Fermilab Education
For students, educators, visitors.
http://ed.fnal.gov/

Fermilabyrinth
A collection of Web-based games and activities to develop an understanding of the operations and experiments that take place in the Fermilab accelerator and detector halls and the scientific ideas they explore. Has a special section for teachers.
http://ed.fnal.gov/projects/labyrinth/

Nuclear Physics
A free E-Learning course on nuclear physics, covering the grammar school curriculum of atomic and nuclear physics. It features a glossary. Also, has practice examinations and forum board, which require free registration.
http://www.online-academy.org/virtualclassroom/nphysics/

FAQ about Fusion Research
The FAQ (from Princeton Plasma Physics Lab) is not very extensive, but it has an impressive Glossary.
http://fusedweb.pppl.gov/faq.html

Fusion: Physics of a Fundamental Energy Source:
An introduction to the principles of fusion geared towards high school students. Posters in various languages also available for download or ordering.
http://fusedweb.llnl.gov/CPEP/

Big Bang Science
Site seeks to explain the origins of matter and current high-energy research regarding the conditions of the early universe. The information presented here is published in booklet form by the Particle Physics and Astronomy Research Council (PPARC).
http://hepwww.rl.ac.uk/public/bigbang/part1.html

What is Antimatter?
From Scientific American: Ask the Experts: Physics.
http://www.sciam.com/physics/article/id/what-is-antimatter/catID/3

What is the Higgs Boson?
From Scientific American: Ask the Experts: Physics.
http://www.sciam.com/physics/article/id/what-exactly-is-the-higgs