U.S. marches to tick of new clock

By Science News Staff, 15:07 PM April 3, 2014

Guest post by Andrew Grant

The atomic clock NIST-F2 has launched as the country’s official civilian time and frequency standard, researchers from the National Institute of Standards and Technology in Boulder, Colo., announced at a press conference April 3. Now the world’s best standard-setting clock, NIST-F2 has about three times the accuracy of NIST-F1, which has helped synchronize U.S. telecommunications networks and power grids since 1999. NIST-F2 is accurate to 10 trillionths of a second p...

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