Your kilogram or mine?(Research EDGE)

From: ECN-Electronic Component News | Date: April 1, 2008 | Copyright information

The standard kilogram continues to lose weight and many international scientists, including some at Sandia National Laboratories, agree that it's time to redefine it. The International Prototype Kilogram (IPK) or "Le Grand K," made in the 1880s, is a bar of platinum-iridium alloy kept in a vault near Paris.

"The idea is to replace the single master kilogram with something based on physical constants, rather than an artifact that could be damaged accidentally," says mech...

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