Prototype Kilogram News Today

A new set of scales together with germanys national institute theyve developed 2 prototypes based on the new definition of the kilogram. for 130 years a metal cylinder in paris was the worlds benchmark of the kilogram but not anymore as you know conversely. the kilogram was the last remaining unit based on a physical object a piece of metal and all other units are based on constants of nature. and. because of this redefinition weights are no longer derived from the international prototype kilogr...