Kilogram Reference Losing Weight

doubleacr writes "Ran across a story on CNN that says the "118-year-old cylinder that is the international prototype for the metric mass, kept tightly under lock and key outside Paris, is mysteriously losing weight — if ever so slightly. Physicist Richard Davis of the International Bureau of Weights and Measures in Sevres, southwest of Paris, says the reference kilo appears to have lost 50 micrograms compared with the average of dozens of copies.""

Comments

Re:The metre must be shrinking then...

[LiquidCoooled]

Actually, that might be possible.
Light speed is not constant in a gravitational field, if some of the other posters are correct and the kilogram has changed because of a localised gravitational shift, then its possible that the definition of a metre could also have changed..