» 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/

» 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

» Physics.org
   Searchable database of physics resources from the Institute of Physics which matches a person's question, age and knowledge profile to handpicked sites. Also includes the Physics Life animation.
   http://www.physics.org

» 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

» TheTangentBundle Physics Project
   An experimental wiki-based collection of user-contributed articles on graduate level physics topics including subjects such as string theory, quantum field theory, mathematical physics and quantum mechanics.
   http://www.physics.thetangentbundle.net/wiki/

» 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/