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Tuesday, May 27, 2003

Kilogram losing weight
(via Eric Stone)

Remember the definitions of the fundamental units of measurement from your school days? Well, it is now time for some unlearning. The platinum-iridium cylinder that was the reference for how much a kilogram weighs has been apparently losing weight; in the last 100 odd years has lost 50 micrograms (with reference to what, I don't know). Scientists are on the lookout for a more stable, less-weight conscious reference.


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