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Kilogram gets new definition

December 9, 2018

Scientists have changed the way the kilogram is defined.

Currently, a kilogram is defined by the weight of a platinum-based block called “Le Grand K” which is locked away in a safe in Paris.

However, researchers meeting in Versailles voted to get rid of it in favour of defining a kilogram in terms of an electric current.

The decision was made at the General Conference on Weights and Measures.

Why kill off the kilogram?
Le Grand K has been the way of measuring weight for some time. But the master kilogram and its copies have changed over the years – ever so slightly – as they deteriorated.

Over the years the change in the Le Grand K has been about 50 parts in a billion. This is about the weight of a single eyelash. But although it is tiny, the change can have important consequences.

The new electrical measurement is more stable and more accurate.

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Chief Editor

About Chief Editor

My name is Shem Banbury. I am the owner and Chief Editor of Kiwi Kids News. By day I am a school teacher and by night a wannabe triathlete.

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1

weird why would they want to change but does that mean that kilogram has two definitions

2

wow why would they do that

3

I am like the king Kilogram how dare they

4

thats clapped
why would they change it?