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Category Archives: General News
The mercury ion optical clock
From 2002-2005 I worked in the NIST Time and Frequency division on a next-generation atomic clock.
The clock is based on a single trapped mercury atom. The most significant result of my work on the clock was a dramatic improvement in its precision, and the report on this progress was finally published this week.
The NIST Press Release compares the accuracy of the mercury clock to the NIST-F1 cesium fountain standard: “The current version of NIST-F1—if it were operated continuously—would neither gain nor lose a second in about 70 million years. The latest version of the mercury clock would neither gain nor lose a second in about 400 million years.”
Read an article from Science News about the paper, or one from Seed Magazine.
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