Research paves the way to next generation of atomic clocks
Three of the worlds premier measurement laboratories - including the Commerce Departments National Institute of Standards and Technology (NIST) - have lined up the "hash marks" from four of the worlds best optical frequency rulers and declared that they match. The experiments, reported in the March 19, 2004, issue of the journal Science, are a significant step toward next-generation "atomic clocks" based on optical rather than microwave frequencies. Such clocks are expected to be as much as 100 times more accurate than todays best timekeeping systems.
Applications for ultra-precise timekeeping include navigation, telecommunications and basic scientific research.
Laura Ost | EurekAlert!
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