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The Physics Classroom - The Physics Classroom Tutorial is an online physics tutorial written for physics students. The Tutorial covers basic physics topics using informative graphics and an easy-to-understand language. Each unit is broken up into lessons and sub-lessons.
Eric Weisstein's World of Science contains budding encyclopedias of astronomy, scientific biography, chemistry, and physics.
physicsworld.com – news, views and information for the global physics community from IOP Publishing
PhysicsCentral - PhysicsCentral communicates the excitement and importance of physics to everyone. They describe the latest research and the people who are doing it and, if you want more, where to go on the web.
Online Physics Tutorials
HyperPhysics is an exploration environment for concepts in physics which employs concept maps and other linking strategies to facilitate smooth navigation.