jxk@sh.itjust.works to Mildly Interesting@lemmy.world · 9 months agoA tagliatelle made from gold that defines the official size of a tagliatelle, at the Palazzo della Mercanzia in Bolognash.itjust.worksexternal-linkmessage-square44fedilinkarrow-up1352arrow-down19file-text
arrow-up1343arrow-down1external-linkA tagliatelle made from gold that defines the official size of a tagliatelle, at the Palazzo della Mercanzia in Bolognash.itjust.worksjxk@sh.itjust.works to Mildly Interesting@lemmy.world · 9 months agomessage-square44fedilinkfile-text
minus-squareNegativeInf@lemmy.worldlinkfedilinkarrow-up8·9 months agoIt’s part of the attempt to more accurately define Avogadro’s number and the kilo. https://www.nist.gov/si-redefinition/kilogram-silicon-spheres-and-international-avogadro-project
minus-squaresubtext@lemmy.worldlinkfedilinkarrow-up5·edit-29 months ago The redefinition of the mole in 2019, as being the amount of substance containing exactly 6.02214076×10^23 particles Since the 2019 SI redefinition, avogadro’s number is a constant. https://en.wikipedia.org/wiki/Avogadro_constant Edit: looks like we were both right! I was reading through your link and it seems the work reported by the NIST led to the exact definitions for Avogadro’s number and the Planck constant.
It’s part of the attempt to more accurately define Avogadro’s number and the kilo.
https://www.nist.gov/si-redefinition/kilogram-silicon-spheres-and-international-avogadro-project
Since the 2019 SI redefinition, avogadro’s number is a constant.
https://en.wikipedia.org/wiki/Avogadro_constant
Edit: looks like we were both right! I was reading through your link and it seems the work reported by the NIST led to the exact definitions for Avogadro’s number and the Planck constant.