How the Roundest Object 🔘 Relates to the Kilogram
Like any unit of measurement📏, the kilogram 𐄷 needs to be the same for everyone, all the time. But different countries have their own ways of defining the kilogram (or “realizing,” as researchers call it). NIST researchers and their German counterparts are working on experiments to see how they can bridge the very tiny gap in the two countries’ measurement approaches.
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