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Can someone help a pleb like me know the guy and the number reference? Edit: thanks guys!, I’ll study him :-)
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It’s Avogadro’s constant. The number of carbon atoms in 12 grams of carbon.
https://en.m.wikipedia.org/wiki/Avogadro_constant
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Wait. They redefined it in 2019 but I thought that “new” way was what I did in school 🤔
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Three Twentysix explains it brilliantly