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Time and Frequency Portal

Programs and Projects
Precision Measurement Grants Program

Since 1970, the National Institute of Standards and Technology (NIST) has awarded Precision Measurement Grants to faculty members of U.S. … more

CODATA values of the fundamental constants

Every four years, the Committee on Data for Science and Technology (CODATA) issues recommended values of the fundamental physical constants. The … more

Cold-Atom Devices

The cooling of atoms to microkelvin temperatures using lasers is currently enabling a new generation of precision instruments that take advantage … more

Vapor Cell Devices

We are developing microfabricated high-performance atomic magnetometers for magnetic anomaly detection, nuclear magnetic resonance and biomagnetics. more

Optical and Microwave Waveform Synthesis

We use femtosecond-laser frequency combs to generate optical and microwave waveforms with unprecedented noise performance.     more

Calcium Optical Beam Clock

A simple, compact alternative to the highest performing optical standards, the Ca clock uses a thermal beam of neutral atoms with one or two … more

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Contact

General Information:
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inquiries@nist.gov

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