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From May 20, the new definitions of four units of measure, including the kilogram, will come into force. Will it be necessary to calibrate our scales? Will it affect our daily life?
On May 20, the new definition of the kilogram, the kelvin, the ampere and the mole will be implemented, as agreed last November at the General Conference of weights and measures that was held in France .
In this way, the kilo will no longer be calculated as it did for more than 120 years, with a weight created in the nineteenth century, but it will be measured in a quantum way, which will give a better precision to scientific research.
In the same way that the redefinition of the second in 1967 has helped improve communications worldwide thanks to advances such as GPS and Internet, experts say that the change of kilogram is good for technology, retail and health. although this will probably not affect the price of the fish.
The kilogram is defined since 1889 by a brilliant piece of platinum iridium preserved in Paris. It contains all the modern mbad measurements: from micrograms of medicines to kilos of apples and pears, tons of steel or cement.
The problem is that the "international prototype" of the kilogram does not always weigh the same. Even being sheltered inside the three glbad bells, it becomes dusty and dirty, and is also affected by the atmosphere. Sometimes you really have to wash well.
This change will not be significant, it will not affect the daily life because the variation of the weight of the kilogram will be 0,00000001 and in the other measures, it will be similar.
"In everyday life, when we buy for example a kilo of bread, it does not affect us, because these measures have an error of 1% because the change is in the microgram." The change is imperceptible in the daily use of the kilo measure, but it will affect the measures of science and technology, "said Héctor Laiz, head of metrology and quality of the National Institute of Industrial Technology (INTI) of Argentina .
"The biggest change is likely to be felt by the manufacturers of scientific instruments, who will have to adapt their products to the new measurements, and it will also be essential to improve the predictions of climate change, because more precise measurements can be made. performed to monitor small changes in temperature, "he added.
Source El Comercio
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