- Physics Laboratory
Supports United States industry by providing measurement services and research for electronic, optical, and radiation technologies.
physics.nist.gov
- Physical Reference Data
Includes physical constants, and other data on spectroscopy, ionizing radiation and dosimetry, nuclear and condensed matter physics, and more.
physics.nist.gov/PhysRefData
- Time and Frequency Division
Maintains the standard for frequency and time interval for the United States though the NIST-F1 Cesium Fountain Atomic Clock.
www.boulder.nist.gov/timefreq
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