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Constants and units

Constants and units

Fundamental constant measured at highest precision yet

15 Dec 2020 Isabelle Dumé
fine-structure constant
The experimental measurement of the fine-structure constant. © Pierre Cladé, Saïda Guellati-Khélifa and Tatsumi Aoyama
The most precise measurement ever of the fine-structure constant has placed new constraints on theor

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Isabelle Dumé is a contributing editor to Physics World
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