Physics Today's Web Watch
April 98
http://www.nndc.bnl.gov/
The National Nuclear Data
Center provides information in
the fields of low- and medium-energy nuclear physics. In particular,
it includes information on neutron, charged-particle and photonuclear
reactions, nuclear structure and decay data. In addition to files
of data, the site offers analysis and utility software, and programs
for producing tables and drawings of nuclear structure and decay data
on a variety of computer platforms. The NNDC, based at Brookhaven
National Laboratory and funded by the Department
of Energy, is intended
primarily for use by researchers in the US and Canada.
A related site is the NEA Data Bank of the OECD Nuclear Energy Agency near Paris. It is intended for use by scientists in the data bank member countries (numerous European countries and also Japan, South Korea and Mexico). The International Atomic Energy Agency's nuclear data section in Vienna caters to scientists in IAEA member countries, especially developing countries. See also the Table of Isotopes home page mentioned in the November 1997 Web Watch.
http://ae-www.usc.edu/astromike/
Astronautics and spacecraft
design are the central topics
of this Web site, created by Mike Gruntman of the University of Southern
California's aerospace engineering department.
It provides a huge
array of links to sites relating to individual spacecraft, spacecraft
propulsion and communications, ground and launch systems and the history
of space exploration, as well as general space-related sites. The
site also has a large bibliography of related textbooks.
http://www.aip.org/avsguide/
The American Vacuum Society's Buyers
Guide is available on-line. Over
250 company listings can be browsed alphabetically or searched by
category. Company names, locations and descriptions are searchable
by keyword. The reference guide provides basic information on topics
of general use, such as units of measurement and conversion factors,
and also information geared toward the vacuum physicist, such as working
pressure ranges of various types of vacuum pumps and gauges. AVS's
Journal of Vacuum Science and
Technology is also on-line, and
nonmembers and nonsubscribers can browse the tables of contents of
1995-97.
