▲ 598 ▼ Miss him (lemmy.world) submitted 9 months ago by themaninblack@lemmy.world to c/memes@lemmy.world 70 comments fedilink hide all child comments
[–] Live_your_lives@lemmy.world 1 point 9 months ago (1 child) Wait, what changed in 2019? permalink fedilink source parent hideshow 2 child comments replies: [–] TonyTonyChopper@mander.xyz 4 points 9 months ago After the 2019 revision of the SI, this definition [of the metre] was rephrased to include the definition of a second in terms of the caesium frequency ΔνCs. https://en.wikipedia.org/wiki/Metre permalink fedilink source parent
[–] TonyTonyChopper@mander.xyz 4 points 9 months ago After the 2019 revision of the SI, this definition [of the metre] was rephrased to include the definition of a second in terms of the caesium frequency ΔνCs. https://en.wikipedia.org/wiki/Metre permalink fedilink source parent
