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This is a file from the Wikimedia Commons. The description on its description page there is shown below.Commons is a freely licensed media file repository. You can help.
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Description |
English: A 1-kg single-crystal silicon sphere for the Avogadro Project is shown above in the hands of Master Optician Achim Leistner at the Australian Centre for Precision Optics (ACPO), which is part of Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO). ACPO's spheres are among the roundest man-made objects in the world. If one of their Ø 93.6 mm spheres, which had an out-of-roundness of 35 nm, was scaled to the size of the Earth, its ‘continents’ would gradually rise only 2.4 meters above sea level.
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Source |
Transferred from en.wikipedia; Transfer was stated to be made by User:Avraham. (Original text : CSIRO) |
Date |
2008-01-11 (original upload date) |
Author |
Original uploader was Greg L at en.wikipedia (Original text : Greg L) |
Permission ( Reusing this image) |
CC-BY-SA-3.0,2.5,2.0,1.0; Released under the GNU Free Documentation License. (Original text : GNU Free Documentation License as detailed in an e-mail sent by the author to permissions-en AT wikimedia DOT org on Saturday, January 12, 2008 at 03:09 Zulu)
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License information
The Commonwealth Scientific and Industrial Research Organisation of Australia, the copyright holder of this work, has published or hereby publishes it under the following licenses:
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation license, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled " GNU Free Documentation license".
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Original upload log
The original description page is/was here. All following user names refer to en.wikipedia.
- 2008-01-11 22:28 Greg L 631×863×8 (462987 bytes) {{Information |Description=A 1-kg silicon sphere for the Avogadro Project in the hands of Master Optician Achim Leistner at the Australian Centre for Precision Optics (ACPO), which is part of Australia's Commonwealth Scientific and Industrial Research Org
File history
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Date/Time |
Dimensions |
User |
Comment |
current |
16:12, 7 February 2008 |
631×863 (452 KB) |
File Upload Bot (Magnus Manske) |
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