National Institute of Standards and Technology's (NIST) Physical Reference Data Web site (last mentioned in the August 16, 1996 Scout Report) provides data on physical constants, ionization, x-ray and gamma-ray, radiation dosimetry, nuclear and condensed matter physics, atomic and molecular spectroscopic data, and more. For example, within the searchable physical constants page, visitors can find...

The NASA Astrophysics Data System (ADS) Web site, which is hosted by the Harvard-Smithsonian Center for Astrophysics, is described as a Digital Library for Physics, Astrophysics, and Instrumentation. ADS maintains four bibliographic databases containing more than 3.2 million records that can be searched or browsed by various interfaces including a Journal/ Volume/ Page Service, Table of Contents...