[FOTZeiss] Official Kilogram Standard Contaminated: Experiments Could be Affected

[Glenn A. Walsh]

The international standard, a cylinder-shaped hunk of metal that defines the fundamental unit of mass, has gained tens of micrograms of mass from surface contamination, according to a new study.

As a result, each country that has one of these standard masses has a slightly different definition of the kilogram, which could throw off science experiments that require very precise weight measurements.

http://spacewatchtower.blogspot.com/2013/01/official-kilogram-standard-contaminated.html

gaw

Glenn A. Walsh, Project Director,
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