Eric Weisstein's Treasure Trove of Physics
Online encyclopedia of physics terms and formulas. Full searchable, and also browsable alphabetically and by topic. Part of Eric's Treasure Troves of Science.
http://scienceworld.wolfram.com/physics/
Physics Central
Find out how physics is part of your world. We answer your questions on how things work and keep you informed with daily updates on physics in the news. We describe the latest research and the people who are doing it and show you physics in action.
http://www.physicscentral.com
PhysicsWeb
Physics news, jobs, equipment buyer's guide, and events.
http://www.physicsweb.org/
