atomic time: References & Edit History
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Article Contributors
Primary Contributors
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Jonathan D. Betts
Curator of Horology, Royal Observatory Greenwich, National Maritime Museum.
Other Encyclopedia Britannica Contributors
Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Media added. | Nov 02, 2023 | ||
| Deleted Web site: NIST Time and Frequency FAQs. | Jul 15, 2013 | ||
| Media added. | Aug 07, 2009 | ||
| Article revised and updated. | Jan 25, 2007 | ||
| Article revised. | Apr 29, 2004 | ||
| Article added to new online database. | Jul 20, 1998 |
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