The Atomic Clock
Update: 2023-09-14
Description
How do we determine the time? Believe it or not, there is an official clock. It’s located in Boulder, Colorado at the National Institute of Standards and Technology, and we go there to visit.
LEARN MORE: NIST doesn’t give public tours. But if you want to watch the seconds go by as precisely as humanly possible, dial (303) 499-7111.
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