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Image: 18pml015 clock-chip-with-coffee-bean 2mb

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Description: The heart of NIST’s next-generation miniature atomic clock — ticking at high “optical” frequencies — is this vapor cell on a chip, shown next to a coffee bean for scale.
Title: 18pml015 clock-chip-with-coffee-bean 2mb
Credit: https://www.nist.gov/image/18pml015clock-chip-coffee-bean2mbjpg
Author: Hummon/NIST
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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