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by saalweachter
1304 days ago
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The gram is the easiest to save by working backwards from Avogadro's number. Avogadro's number is close to 24!, so we could redefine our mass unit as exactly 24! hydrogen atoms (or 4!!) and that comes out to within about 3% of a gram while being significantly easier to communicate to an extraterrestrial civilization. |
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