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• Organization: National Institute of Standards and Technology
• Dataset Last Updated: January 01, 2014

This site, developed in the Physics Laboratory at NIST, addresses three topics: fundamental physical constants, the International System of Units (SI), which is the modern metric system, and...

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• Organization: National Institute of Standards and Technology
• Dataset Last Updated: August 01, 2005

This database collects tables and graphs of the form factors, the photoabsorption cross section, and the total attenuation coefficient for any element (Z <= 92). Version 2.1

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