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Scientists to swap dirty old kilogram for something more stable

ITN News Editor
By ITN News Editor November 13, 2018 13:07

Scientists to swap dirty old kilogram for something more stable

After years of nurturing a sometimes dusty lump of metal as the global reference for modern mass, scientists are to redefine the kilogram ditching a relic made of a platinum-iridium alloy for something more up to date.

Just as the redefinition of the second in 1967 helped ease communication across the world via technologies like GPS and the internet, experts say the change to the kilogram will be better for technology, retail, health and many other sectors.

The kilogram has since the 19th century been defined by a grey lump of platinum-iridium held in a vault in France. All modern mass measurements are traceable back to it – from micrograms of pharmaceutical medicines, to apples and pears, concrete, steel and other weighty materials.

ITN News Editor
By ITN News Editor November 13, 2018 13:07

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