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Buyers guide features NIST Data product. (General Developments).

The lead article in the annual Buyer's Guide of the American Institute of Physics features five pages of values of the fundamental physical constants, such as the speed of light, the Newtonian constant of gravitation, the Planck constant, the fine-structure constant, and energy-unit conversion factors. The guide was distributed as a supplement to the August issue of Physics Today, a monthly publication with a circulation of about 123 000 worldwide. The numbers published in the tables were obtained from the 1998 CODATA least-squares adjustment of their values carried out in the Fundamental Constants Data Center at NIST in 1999. Other publications, such as the CRC Handbook of Chemistry and Physics, also quote the values obtained at NIST.

Values of the constants can be found on the Web site at http://physics.nist.gov/constants. This site averages well over 100 000 downloads per month from outside of NIST. The Fundamental Constants Data Center also distributes wallet card and page-sized tables of values of the constants. These may be obtained from NIST at (301) 975-NIST (6478).

CONTACT: Peter Mohr, (301) 975-3217; peter.mohr@nist.gov.
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Publication:Journal of Research of the National Institute of Standards and Technology
Geographic Code:1USA
Date:Sep 1, 2002
Words:184
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