Veritasium on MSNOpinion
Why the kilogram was redefined after 130 years of using the same standard
For more than a century, the kilogram was defined by a physical metal object locked away like a treasure. The problem was ...
Morning Overview on MSN
Why scientists killed the old kilogram after 130 years and rewrote the standard
For more than a century, a single metal cylinder in a Paris vault quietly defined what a kilogram was. After 130 years, ...
How we measure the world underwent a quantum leap on Monday as scientists adopted new hyper-accurate definitions for units of weight, electricity and temperature derived from the universal laws of ...
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