File:USNO rubidium fountain.jpg
USNO_rubidium_fountain.jpg (250 × 282 pixels, file size: 20 KB, MIME type: image/jpeg)
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Date/Time | Dimensions | User | Comment | |
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current | 23:54, 3 September 2010 | 250 × 282 (20 KB) | Coenen | {{Information |Description={{en|1=Rubidium (Rb) fountain atomic clock at the U.S. Naval Observatory}} |Source=U.S. Naval Observatory |Author=U.S. Naval Observatory |Date= |Permission= |other_versions= }} For description, see http://www.skyandtelescope.com |
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