The scientists building a clock so accurate it could redefine the second
New type of atomic clock keeps time even more precisely | MIT News | Massachusetts Institute of Technology
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Richard Hoptroff's Atomic Wristwatch Prototype Is Big, Strangely Attractive, And Astoundingly Accurate - Hodinkee
Rock Out With Your Clock Out: We Test Atomic Watches | WIRED
First Take: The Urwerk AMC, An Atomic Clock-Controlled Take On The Breguet Sympathique (VIDEO) - Hodinkee
Amazon.com: SHARP Atomic Clock with Bright Color Display, Atomic Accuracy, Jumbo 3" Easy to Read Numbers - Indoor/Outdoor Temperature Display with Wireless Outdoor Sensor : Home & Kitchen