Archive for December 26th, 2007

Perfect Spheres

December 26, 2007

littlesphere.jpgIn an odd connection both to yesterday’s post on spherical Buckeyes and TwoPi’s November post on how the official kilogram is losing weight (although by definition, its mass remains the same), it turns out that spheres are being used in a quest to redefine the kilogram. In particular, according to this article, Australian scientists are trying to create a perfect sphere out of a single crystal of silicon. In theory, once they have a perfect sphere they can count the number of atoms, and use that unchanging quantity as a way to define the kilogram. (more…)


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