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Time to shrink the atomic clock

点击量:   时间:2019-03-09 08:18:00

By Anil Ananthaswamy ATOMIC clocks, currently the size of fridges, could shrink to the microscale thanks to a new way of measuring the second. The technique could also see aluminium displace caesium as the standard of time. The world’s most accurate atomic clocks are at the National Institute of Standards and Technology (NIST) at Boulder, Colorado. Known as fountain clocks,