Physics Subject Guide

A Digital Library portal for researchers in Astronomy and Physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant. The ADS maintains three bibliographic databases containing more than 10.2 million records: Astronomy and Astrophysics, Physics, and arXiv e-prints.

The Interactions Collaboration seeks to support the international science of particle physics and to set visible footprints for peaceful collaboration across all borders.

The Physical Measurement Laboratory (PML) ( view PML brochure) develops and disseminates the national standards of length, mass, force and shock, acceleration; time and frequency; electricity, temperature, humidity, pressure, and vacuum; liquid and gas flow; and electromagnetic, optical, microwave, acoustic, ultrasonic, and ionizing radiation.

The American Physical Society represents some 48,000 physicists, and most of our work centers on scientific meetings and publications-the primary ways that physicists communicate with each other. With PhysicsCentral, we communicate the excitement and importance of physics to everyone.

Comprehensive physics and astronomy online education, research and reference web site founded in 1995 by a physicist Anton Skorucak.

SkyView is a Virtual Observatory on the Net generating images of any part of the sky at wavelengths in all regimes from Radio to Gamma-Ray.