Ancient Web: Atomic Bill Wore a 75-Pound Cesium Clock as

LeapSecond.com answered the phrase ‘atomic wristwatch’ literally by strapping a Hewlett-Packard 5071A cesium frequency standard to a man’s arm.

https://switchboardtechservices.com/articles/ancient-web-atomic-bill-wore-a-75-pound-cesium-clock-as-a-wristwatch/

By Switchboard Tech Services · Originally published 2026-07-22

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