File:Silicon sphere for Avogadro project.jpg
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Dimension de ci prevision: 438 × 599 pixeles. Altri resolutiones: 175 × 240 pixeles | 631 × 863 pixeles.
Original file (631 × 863 pixeles, dimension del file: 452 KB, tip MIME: image/jpeg)
Descrition
| Descrition |
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 on Earth. (The gyroscopes of Gravity Probe B are equally round but are in orbit, not "on Earth".) 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. Italiano: All'Australian Centre for Precision Optics (ACPO), parte del Commonwealth Scientific and Industrial Research Organisation (CSIRO) australiano, il Maestro ottico Achim Leistner tiene in mano una sfera da 1 kg per il Progetto avogadro costituita da un singolo cristallo di silicio.
Le sfere del centro ACPO sono gli oggetti più perfettamente rotondi al mondo mai prodotti dall'uomo. Se una delle sfere (dal diametro di 93.6 mm e aventi deviazione dalla sfericità di soli 35 nm) fosse ingrandita fino alla grandezza della Terra, le sue rugosità raggiungerebbero solamente i 2.4 metri dal livello del mare. 中文：图为澳洲精密光学中心的一名光学仪器专家，他手持的是国际阿伏伽德罗协作组织的一千克单晶体硅制球体。 |
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| Date | |||
| Fonte | CSIRO | ||
| Autor | The Commonwealth Scientific and Industrial Research Organisation of Australia | ||
| Permission: (Reusant ti-ci file) |
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| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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Autorisation
CSIRO, the copyright holder of this work, hereby publishes it under the following licenses:
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Permission es concedet por copiar, distribuer e/o modificar ti document sub li conditiones del Autorisation de Documentation Líber del GNU, Version 1.2 o qualcunc version posteriori publicat per li Free Software Foundation; che nequant Section Ínvariant, nequant Textu de Covriment, e nequant Textu de Contra-Covriment. Un copie del autorisation es includet in li section nominat Autorisation de Documentation Líber del GNU. |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.
Atribution:
The Commonwealth Scientific and Industrial Research Organisation of Australia
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Original upload log
The original description page 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
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| Version de | Miniatura | Dimensiones | Usator | Comentarie | |
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| actual | 17:12, 7 februar 2008 | | 631 × 863 (452 KB) | wikimediacommons>File Upload Bot (Magnus Manske) | {{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|A 1-kg single-crystal silicon sphere for the Avogadro Project is shown above in the hands of Master Optician Achim Leistner at the [http://www.acpo.csiro. |
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