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Wikipedia:Featured picture candidates/Sphere

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Original
Reason
High-res, sharp, encyclopedic
Proposed caption
An image of one of the most accurate spheres ever created by humans, as it refracts the image of Einstein in the background. This sphere was a fused quartz gyroscope for the Gravity Probe B experiment which differs in shape from a perfect sphere by no more than 40 atoms of thickness. It is thought that only neutron stars are smoother. It was announced on June 15, 2007 that Australian scientists are planning on making even more perfect spheres, accurate to 35 millionths of a millimeter, as part of an international hunt to find a new global standard kilogram.[1]
Articles this image appears in
Sphere Gravity Probe B
Creator
NASA
Previous nomination
April 2006

Not promoted MER-C 09:32, 6 August 2007 (UTC)[reply]

References

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