SPIRES
The Virtual Library: Physics
U.C. Berkeley Physics
Open Directory Project. Science. Physics
Google Web Directory Science Physics
ResearchIndex Physics
INFOMINE: Escholarly Internet Resource Collection
WebBrain Physics
Virtual Reference Derk
The Internet Public Library. Physics Resources
The Argus Clearinghouse
The WWW Virtual Library
Librarians' Index to the Internet
Institute of Physics
American Physical Society
PhysicsWeb
PhysLink.com
U.C. Berkeley Physics
Galaxi Directory Physics
Cordis (Servicio de Información Comunitario Sobre Investigación y Desarrollo)
Yahoo! Directory Science Physics
NASA
Physics Laboratory
Internet Scout Project

Óptica

Optical Society of America
Optics.Org The On-Line Photonics Resource
Optical Science Center
Laser Optic USA

Astrofísica-Astronomía

Institut d'Astrophysique de Paris
Observatoire de Paris
Astrored
Science@UNSW
Sociedad española de Astrofísica
Astronomía y Meteorología
Instituto de Astrofísica de Canarias
Institut d'Astrophysique Spatial
Astronomical Science
Observatorio Astronómico Nacional

Física atómica

Atomic Physics
Tripod Atomic Physics

Física teórica

Theoretical Physics
Albert Einstein Institut
Laboratory of Theoretical Physics
Sites Theoretical Physics

Meteorología

Instituto Nacional de Meteorología
Astronomía y Meteorología
InfoMet

Física Nuclear y de Partículas

CERN (European Organization for Nuclear Research)
American Nuclear Society
Particle Physics in the UK

Cristalografía

International Union of Chystallography
Laboratoire de Cristallographie

Geofísica

Geophysics
Volcano World
Exploration Geophysics Group
Geophysics Resources

Recursos Didácticos

ESA European Space Agency
American Institute of Physics