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You Should Know@lemmy.world · 1 year ago

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Vilian@lemmy.ca to

You Should Know@lemmy.world · 1 year ago

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dandan@kbin.social
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1 year ago
To get even more pedantic…

It’s defined on how far light will travel in a vacuum in the time it takes caesium-133 to do a certain number of transitions between hyperfine ground states.

It’s cool how almost all units of measure are defined on caesium
- atocci@kbin.social
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  Why is it based on cesium?
  - Stumblinbear@pawb.social
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    It’s just very stable and consistent, iirc

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