[time-nuts] Atomic clock on a chip

Michael Poulos poulosmd at gmail.com
Sun May 15 05:33:09 UTC 2011


On 5/11/2011 9:24 PM, James Fournier wrote:
> http://www.smartertechnology.com/c/a/Technology-For-Change/Smarter-Atomic-Clock-on-a-Chip-Debuts/
>

> NIST (aka bureau of standards) invented an atomic clock movement that is the size of a grain of rice. That's almost good enough to fit in a self-setting wristwatch, if they can get the power needs down enough. A radio-controlled REAL atomic watch would be awesome, as it'll never be more than a few milliseconds off at any instant. The watch could even be designed so that the user sets in the city and it compensates for time of radio propagation. (like about 5 milliseconds from the WWVB transmitter to Chicago) An "atomic" watch is as of now is no more than a half a second off at any time, good enough for human affairs. (but not for a good time nut!)



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