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Old 11-11-2010, 03:15 PM
RealityChuck RealityChuck is offline
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Join Date: Apr 1999
Location: Schenectady, NY, USA
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They have been working for years on trying to find a standard that did not depend on the kilogram in Paris. They replaced the meter stick years ago, but finding something that has the required accuracy is pretty damn hard. The sphere is a good start, but ultimately, it's just another object.

What they want is some way to measure it without needing an artifact. For instance, the standard meter is defined now as "the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second." This allows people to create their own meter sticks without having to measure them against any standard.
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