File:USNO rubidium fountain.jpg
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USNO_rubidium_fountain.jpg (250 × 282 pixels, file size: 20 KB, MIME type: image/jpeg)
Summary
Rubidium (Rb) fountain atomic clock at the U.S. Naval Observatory
Licensing
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:14, 9 January 2017 | ![]() | 250 × 282 (20 KB) | 127.0.0.1 (talk) | Rubidium (Rb) fountain atomic clock at the U.S. Naval Observatory |
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