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Quantum

Quantum

Portable optical atomic clock makes its commercial debut

12 Dec 2023
Photo of four iodine vapour cells, which are glass boxes a few centimetres long
Simple setup: The iodine vapour cells used in Vector Atomic's portable optical atomic clock. (Courtesy: Vector Atomic)
Atoms are the world’s most precise timekeepers – so much so that the second is defined as exactl

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Dina Genkina is a science writer based in the US
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