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Metrology

Metrology

Electrical resistance standard could get a revised quantum definition

03 Feb 2022 Isabelle Dumé
quantum resistance standard
A prototype of a quantum resistance standard based on the quantum anomalous Hall effect with a disc magnet. (Courtesy: Y Okazaki)
Researchers in Japan have proposed a new way of defining the standard unit of electrical resistance

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Isabelle Dumé is a contributing editor to Physics World
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