Physics newsgroup:
News:sci.physics

Tutorials, Experts, Problems, and Message Boards

Mad Scientist Network - Online expert answers to your science questions in over twenty-five areas of science, and you get to state the level at which you are studying so the response is appropriate to your level of information. Also has archives so you can check previously asked and answered questions
http://www.madsci.org/current.html

Interactive Physics Problem Set - over 100 physics practice problems with answers
http://152.15.51.26/IPPS/Contents.html

Interactive Textbook - integrated course in chemistry, mathematics (precalculus level and above) and physics out of the University of Pennsylvania. Use of functions in science: linear, quadratic, exponentials, trigonometric; derivatives: velocity, acceleration and growth; differential equations: Newton's Laws, rocket motion, chaotic systems; forces and vectors. Numerous worked problems.
http://dept.physics.upenn.edu/courses/gladney/mathphys/java/Contents.html

Introductory Physics Problem Solving - from Journal of Modern Problem Solving
http://www2.hawaii.edu/suremath/physicsProblems.html

Physics - example problems - tremendous resource
http://www.seanet.com/~ksbrown/iphysics.htm

Laws of Physics

The Laws List - laws, rules, principles, effects, paradoxes, limits, constants, experiments, & thought-experiments in physics
http://www.alcyone.com/max/physics/laws/index.html

Table of Fundamental Physical Constants - from MIT, straightforward site
http://uwast.astro.wisc.edu/~dolan/constants.html

General Information, Glossaries, Outlines

Eric’s Treasure Trove of Physics - online encyclopedia with understandable definitions and examples
http://www.treasure-troves.com/physics/

The Internet Pilot to Physics – site that aims to be one-stop site for physicists, with chat room, an in-progress online encyclopedia, links, jobs.
http://physicsweb.org/TIPTOP/

Lexicon of Semiconductor Terms
http://rel.semi.harris.com/docs/lexicon/

Substantive Physics Sites

A Level Physics - organized student notes on wide variety of physics topics
http://www.geocities.com/SoHo/2003/syll.htm

C3P - Comprehensive Conceptual Curriculum for Physics
http://phys.udallas.edu/index.html

Eric’s Treasure Trove of Physics - online encyclopedia with understandable definitions and examples
http://www.treasure-troves.com/physics/

Fermilab- inside the famous high energy physics lab
http://www.fnal.gov

Hot Air, The Annals of Improbable Research - journal
http://www.improb.com/

Interactive Textbook - integrated course in chemistry, mathematics (precalculus level and above) and physics out of the University of Pennsylvania. Use of functions in science: linear, quadratic, exponentials, trigonometric; derivatives: velocity, acceleration and growth; differential equations: Newton's Laws, rocket motion, chaotic systems; forces and vectors. Numerous worked problems.
http://dept.physics.upenn.edu/courses/gladney/mathphys/java/Contents.html

The Laws List - laws, rules, principles, effects, paradoxes, limits, constants, experiments, & thought-experiments in physics
http://www.alcyone.com/max/physics/laws/index.html

Mathematical Physics – articles on math and physics
http://www.seanet.com/~ksbrown/iphysics.htm

The Particle Adventure – interactive tour of the inner workings of the atom and the tools for discovery. 
http://particleadventure.org/

Physics - example problems - tremendous resource
http://www.seanet.com/~ksbrown/iphysics.htm

Physics News
http://www.het.brown.edu/news/index.html

Space Physics Textbook
http://www.oulu.fi/~spaceweb/textbook/

Table of Fundamental Physical Constants - from MIT, straightforward site
http://uwast.astro.wisc.edu/~dolan/constants.html

Table of the Nuclides
http://www.dne.bnl.gov/CoN/index.html

Interactive and Visualization Sites

Interactive Physics Problem Set - over 100 physics practice problems with answers
http://152.15.51.26/IPPS/Contents.html

Interactive Textbook - integrated course in chemistry, mathematics (precalculus level and above) and physics out of the University of Pennsylvania. Use of functions in science: linear, quadratic, exponentials, trigonometric; derivatives: velocity, acceleration and growth; differential equations: Newton's Laws, rocket motion, chaotic systems; forces and vectors. Numerous worked problems.
http://dept.physics.upenn.edu/courses/gladney/mathphys/java/Contents.html

The Particle Adventure – interactive tour of the inner workings of the atom and the tools for discovery. 
http://particleadventure.org/

The Virtual Laboratory - links to online interactive and visualization sites
http://physicsweb.org/TIPTOP/VLAB/

History and Biography

Albert Einstein Online - complete Einstein site
http://www.sas.upenn.edu/~smfriedm/einstein.html

Museum of Early Instruments of Physics - with photographs, chose English version
http://hpl33.na.infn.it/Museum-old/Museum.html

Testing

AP Physics - College Board Online
http://www.collegeboard.org/ap/physics/

Links

Eric’s Treasure Trove of Physics - online encyclopedia with understandable definitions and examples
http://www.treasure-troves.com/physics/

Physics from Around the World - wide list of links by categories
http://physicsweb.org/resources/