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Kilogram News

Mass movement: scientists adopt new kilogram definition

Paris - How we measure the world underwent a quantum leap on Monday as scientists adopted new hyper-accurate definitions for units of weight, electricity and temperature derived from the universal laws of Nature.

Essential Science: Nature will now define the kilogram

The original kilogram is no more, or at least it will remain locked in a Paris vault never to be used for official purposes, such as calibrating national weight standard again. Instead there’s a new approach for assessing global mass.

The Kilogram Is Losing Weight

The original prototype of the kilogram is 118 years old and has mysteriously lost weight according to Physicist Richard Davis of the International Bureau of Weights and Measures in Sevres, southwest of Paris.

Atomic weights to be standard measurements: US remains in Stone Age

The kilogram, which is becoming the standard measurement of weight, globally, is, believe it or not, based on a bar of platinum-iridium kept in a vault in Paris. It’s the only standard measurement on Earth still defined by a physical object.
 

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A computer-generated image of the International Prototype kilogram (IPK)  which is made from an allo...
A computer-generated image of the International Prototype kilogram (IPK), which is made from an alloy of 90% platinum and 10% iridium (by weight) and machined into a right-circular cylinder (height = diameter) of 39.17 mm. The IPK is kept at the Bureau International des Poids et Mesures (International Bureau of Weights and Measures) in Sèvres on the outskirts of Paris.
Greg L (CC BY-SA 3.0)

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