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[ad_1] On May 20, the new definitions of kilogram, kelvin, ampere and mole came into effect worldwide. The kilo that most people use daily is no longer what it was up to …
Read More »changed the official definition of this measure
[ad_1] On May 20, the new definitions of kilogram, kelvin, ampere and mole came into effect worldwide. The kilo that most people use daily is no longer what it was up to …
Read More »