Optical atomic clocks poised to redefine how the world measures seconds

Time is almost up on the way we track each second of the day, with optical atomic clocks set to redefine the way the world ...
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New atomic fountain clock joins elite group that keeps the world on time

Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards and Technology (NIST) campus in Boulder, Colorado. This month, NIST ...
Optics

NIST’s ion clock claims record for ‘most accurate in the world’

Researchers at the U.S. National Institute of Standards & Technology (NIST) say they have created the most accurate atomic clock to date — one that can measure time down to the 19th decimal place.