File:Usno-mc.jpg
Summary
US Naval Observatory's (USNO) Master Clock Ensemble, Washington D.C., made up of a large number of <a href="//commons.wikimedia.org/w/index.php?title=Symmetricom&action=edit&redlink=1" class="new" title="Symmetricom (page does not exist)">Symmetricom</a> 5071A cesium beam clocks (rack in background). This provides the time standard for the US military. The large black object in the foreground is a <a href="//commons.wikimedia.org/w/index.php?title=Symmetricom&action=edit&redlink=1" class="new" title="Symmetricom (page does not exist)">Symmetricom</a> (formerly Sigma-Tau) MHM-2010 active hydrogen maser.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:14, 3 January 2017 | | 600 × 357 (36 KB) | 127.0.0.1 (talk) | US Naval Observatory's (USNO) Master Clock Ensemble, Washington D.C., made up of a large number of <a href="//commons.wikimedia.org/w/index.php?title=Symmetricom&action=edit&redlink=1" class="new" title="Symmetricom (page does not exist)">Symmetricom</a> 5071A cesium beam clocks <i>(rack in background)</i>. This provides the time standard for the US military. The large black object in the foreground is a <a href="//commons.wikimedia.org/w/index.php?title=Symmetricom&action=edit&redlink=1" class="new" title="Symmetricom (page does not exist)">Symmetricom</a> (formerly Sigma-Tau) MHM-2010 active hydrogen maser. |
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