31 ms·
NIST is working on a new reference for the kilogram based on Planck's constant, so that quote may become invalid in the near future.
by Cyph0n 9y ago
NIST is working on a new reference for the kilogram based on Planck's constant, so that quote may become invalid in the near future.
- oldcynic 9y agoNPL invented the Kibble balance that is being used in the proposed redefinition[0]. They discuss it and the Avagadro project on the page. So indeed it won't be valid much longer! [0] http://www.npl.co.uk/educate-explore/kibble-balance/ http://www.npl.co.uk/educate-explore/kibble-balance/