No higher resolution available.
Usno-mc.jpg (600 × 357 pixels, file size: 36 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: US Naval Observatory's (USNO) Master Clock Ensemble, Washington D.C., made up of a large number of Symmetricom 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 Symmetricom (formerly Sigma-Tau) MHM-2010 active hydrogen maser. |
| Date | 20 December 2008 (original upload date) |
| Source | http://tycho.usno.navy.mil/gif/clockvaults.jpg |
| Author | US Naval Observatory |
| Permission (Reusing this file) |
Per source's Security & Privacy Policy: "All information on this site is public domain and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested." |
Licensing
|
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
|
 |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:25, 20 December 2008 | | 600 × 357 (36 KB) | Coenen | {{Information |Description={{en|1=USNO Master Clock and Clock Ensemble, Washington D.C.}} |Source=http://tycho.usno.navy.mil/gif/clockvaults.jpg |Author=US Naval Observatory |Date= |Permission= |other_versions= }} <!--{{ImageUpload|full}}--> |
File usage
The following 8 pages use this file:
Global file usage
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on azb.wikipedia.org
- Usage on es.wikipedia.org
- Usage on fa.wikipedia.org
- Usage on gl.wikipedia.org
- Usage on hr.wikipedia.org
- Usage on id.wikipedia.org
- Usage on it.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on mk.wikipedia.org
- Usage on ms.wikipedia.org
- Usage on pl.wikipedia.org
- Usage on sh.wikipedia.org
- Usage on sr.wikipedia.org
- Usage on sv.wikipedia.org
- Usage on www.wikidata.org
- Usage on zh.wikipedia.org
