- NASA Astrophysics Data System - abstracts on astrophysics, astronomy, instrumentation, geophysics, and physics. Plus the Los Alamos preprint server, articles, and catalogs.
- Physics Forums - discuss physics, cosmology, thermodynamics, and mathematics.
- www.physik.de - information on physics, mostly German but with international links. Things of public interest are covered in detail.
- Physics in Philately - physics and physics-related topics on stamps, first day covers, postal cards, aerogrammes, special cancellations, and other postal items.
- causeeffect.org - contains articles by amateur physicist Carl R. Littmann that address the understanding of fundamental issues in physics from a conceptual and intuitive viewpoint.
- badphysics.info - offers clarification on commonly misunderstood physics principles.
- Pendulum Lab, The - virtual laboratory and lecture room introducing basic issues like harmonic oscillator and resonance as well as advanced topics like parametric resonance, nonlinear dynamics, and chaos.
- Eric Weisstein's World of Physics - definitions of terms from the world of physics.
- PhysLINK - contains jobs, reference, societies, journals, history of physics, new theories, ask experts, jokes, cartoons and more.
- Physics Of... - the physics of various topics of everyday life.
















