The International Bureau of Weights and Measures has new definitions of four basic units of measurement: the kilogram, kelvin, mole and ampere.
, and although it was not yet accurate enough to redefine the kilogram, it suggested a path forward.
“One experiment could have a hidden defect, but if you have two absolutely different approaches and they agree, then the chances that you are completely wrong is very low indeed,” saidKibble balances provided one value. The other measurement involved a softball-sized sphere of pure enriched silicon.
Nor do they discriminate between Earthlings and beings elsewhere in the universe. Just as the first iteration of the metric system streamlined communication and trade among nations, the newly defined units could one day help humanity communicate with extraterrestrials, scientists said. Scientists don’t know how the new units will affect future discoveries, but it is certainly possible they will. For example, the second can now be measured so precisely that researchers can detect small changes in the Earth’s gravitational field because“Lord Kelvin, one of the leaders in the field of metrology said, ‘To measure is to know,’” Copan said.
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