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Contact: Laura Ost
laura.ost@nist.gov
303-497-4880
National Institute of Standards and Technology (NIST)

Steve Jefferts and Tom Heavner, National Institute of Standards and Technology

Caption: National Institute of Standards and Technology physicists Steve Jefferts (foreground) and Tom Heavner with the NIST-F2 'cesium fountain' atomic clock, a new civilian time standard for the United States.

Credit: National Institute of Standards and Technology

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Related news release: NIST launches a new US time standard: NIST-F2 atomic clock


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