Electronics > Metrology

Optical clocks and the second redefinition

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iMo:
Optical clocks with 1E-18 uncertainty..

Gyro:
56:55... Damn, where did the Ytterbium ion go?!  :D

Impressive stuff.

Electrole:
An open access paper was published on January 22, 2024, on the "Roadmap towards the redefinition of the second":

https://iopscience.iop.org/article/10.1088/1681-7575/ad17d2

Quite an interesting review of things to consider should we decide to redefine the second (and yes, we eventually will / should...  it's more a question about "how").
Happy reading!

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