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WE In 2019, we will no longer use the current kilo.
On Friday (11/16), scientists will agree on a new way to determine the weight of the mbad in kilo.
For more than 100 years, the weight size was based on The Great Katau K Besar, a metal that determines the weight of a kilo.
Various scales ranging from those used in the kitchen to weight measurements in gyms around the world are made from metal standards stored at the hairdresser in Paris since 1889.
Different countries use the "prototype of the kilogram", which is different from the calibrated stallion with metal in Paris. But scientists want to confirm this weight again.
This change will not interfere with our daily lives, but it is estimated that it will affect the industry and the world of science, which requires accurate measurement of weight.
The kilo is one of the seven basic measures used by the international unit system, the International System of Units (SI).
Four weights – kilogram, amperage (for electricity), kelvin (heat) and mole (granulometry) – will be updated at conferences and weight measurements, General Conference of Weights and Measures (GFCM), in Versailles, on Friday. west of Paris 11/16).
Kilo is based on original models in France. (Photo: Getty)
Original kilogram
Kilograms are SI sizes determined by physical objects.
Large K 4 cm and made of 90% platinum and 10% iridium, made in London and stored in Paris at the International Bureau of Weight Measurement, BIPM, in Sèvres, near Paris.
But this physical object easily loses atoms or absorbs molecules from the air, so that its mbad changes dozens of micrograms during the last century.
This means that prototypes are used around the world to measure kilograms and that calibration scales are no longer accurate.
This slight difference will not affect everyday life, but it will be a problem for the good calculation of science.
New kilo
Measuring new kilograms will use Kibble, a tool to measure accuracy using mechanical and electromagnetic energy.
Measuring pounds without using a physical object means that the standard size can not be changed, damaged or lost.
With this, scientists around the world will be able to measure the pounds, including those who do not have access to the Big K standard for metal in Paris.
A kilo of weight. (Photo: EPA)
"The re-measurement of the SI is a historic moment in scientific measurement," said Theodoor Janssen, research director of the UK National Physics Laboratory, the agency responsible for weight measurement in the UK .
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