IT'S OFFICIAL – the science community has voted! All of the SI units will be defined by fundamental constants of nature as of 20 May 2019! #SIRedefinitionhttps://t.co/U1V0TFxXLG pic.twitter.com/xpcddbAAmV— NPL (@NPL) November 16, 2018
IT'S OFFICIAL – the science community has voted! All of the SI units will be defined by fundamental constants of nature as of 20 May 2019! #SIRedefinitionhttps://t.co/U1V0TFxXLG pic.twitter.com/xpcddbAAmV