Physics
Vacuum transfer advance will help redefine kilogram next year
Abandoning the old prototype kilogram stored in Paris will require accurate mass measurements in a vacuum, something new techniques will make easier
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Abandoning the old prototype kilogram stored in Paris will require accurate mass measurements in a vacuum, something new techniques will make easier
Quantum physicists just can't agree on how to handle the fundamental uncertainty that apparently underpins reality. We round up their best attempts so far