» 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/

» PhysLINK Links to physics departments, physical societies, journals, job information, and other physics related information.
http://www.physlink.com/

» PhysOrg.com Physics news, semiconductor technology news, space news and a scientific forum.
http://www.physorg.com/

» Physics Central A page on modern physics, such as quantum mechanics and black holes, and some mathematics.
http://www.physlib.com/

» Physics News Graphics Diagrams (with captions) appearing in various AIP publications, sorted by category or by date.
http://aip.org/mgr/png/

» Physics Post A tutorial and article driven community. Votes, science news and a discussion forum.
http://www.physicspost.com/

» Physics and Astronomy Classification Scheme (PACS) Hierarchical numbering scheme, developed by the American Institute of Physics, used to identify fields and sub-fields of physics.
http://publish.aps.org/PACS/

» Physics on MathPages Articles, leaning towards a mathematical description, on a wide range of topics in physics.
http://www.mathpages.com/home/iphysics.htm

» PhysicsWeb Physics news, jobs, equipment buyer's guide, and events.
http://physicsworld.com/cws/home

» Physnet: The Physics Departments and Documents Network Serves information from physics departments and institutes worldwide: departmental information, locally stored documents, authoring tools, free access journals, jobs, conferences and education material.
http://physnet.physik.uni-oldenburg.de/PhysNet/

» Scientific American - Questions That Plague Physics A conversation with Lawrence M. Krauss, chair of the physics department at Case Western Reserve University.
http://genesis1.phys.cwru.edu/~krauss/0804082.pdf

» The Net Advance of Physics MIT resource providing discussions at various levels of sophistication that cover all areas of physics.
http://web.mit.edu/redingtn/www/netadv/welcome.html

» The Physical World Answers to simple physics questions, from New Scientist.
http://www.newscientist.com/lastword.ns

» Usenet Physics FAQ sci.physics frequently asked questions with answers.
http://math.ucr.edu/home/baez/physics/

» What You Want To Know About Physics Summarizes in simple language, without advanced mathematics, the foundations of physics. The index gives direct access to selected topics.
http://kr.cs.ait.ac.th/~radok/physics/

» World Year of Physics 2005 International effort to celebrate the 100th anniversary of the Miraculous Year (1905) and raise public awareness of physics.
http://www.wyp2005.org/