What will change now that the kilo has a different weight? – ElSol.com.ar – Diario de Mendoza, Argentina

On May 20th, the new definition of kilogram, kelvin, ampere and mol was implemented, as agreed in November 2018 at the General Conference of Weights and Measures 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 19th century, but it will be quantitatively measuredwhich will bring greater precision to scientific research.

In the same way that the redefinition of the second in 1967 has helped to improve communications worldwide thanks to advances such as GPS and Internet, experts say that the kilogram change is good for technology, retail and healthalthough this will probably not affect too much, for example, the price of 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.

Will the change in kilograms affect daily life?

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 you buy for example a kilo of bread, This will 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.