Atomichron Explained

The Atomichron was the world's first commercial atomic clock, built by the National Company, Inc. of Malden, Massachusetts. It was also the first self-contained portable atomic clock and was a caesium standard clock. More than 50 clocks with the trademarked Atomichron name were produced.^{[1] [2] [3] [4]}

See also

• Chip-scale atomic clock
• Hoptroff London

External links

• A Brief History of the National Company, Inc
• Atomichron: The Atomic Clock from Concept to Commercial Product

Notes and References

1. Forman . P . July 1985 . Atomichron: The atomic clock from concept to commercial product . Proceedings of the IEEE . 73 . 7 . 1181–1204 . 0018-9219 . 10.1109/PROC.1985.13266 . 19716223 . https://web.archive.org/web/20071021044529/http://ieee-uffc.org/freqcontrol/atomichron/automichron.htm . 2007-10-21.
2. Web site: The Global Positioning System . pdf . 2008-04-23 . dead . https://web.archive.org/web/20100520121212/http://www.beyonddiscovery.org/includes/DBFile.asp?ID=84 . 2010-05-20 .
3. News: Science Update . The Dallas Morning News . 1989-10-02.
4. Book: The Global Positioning System: The Path from Research to Human Benefit . National Academy of Sciences . 1996 . 7 .