16 added 31 characters in body edited Jun 24 at 19:55 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges The kilogram is also getting a complete re-working. The current kilogram - the mass $$M_\mathrm{IPK}$$of the international prototype kilogram - has been drifting slightly for some timedrifting slightly for some time, for a variety of reasons. A physical-constant-based definition (as opposed to an artefact-based definition) has been desired for some time, but only now does technology really permit a constant-based definition to work as an accurate standard. The kilogram is also getting a complete re-working. The current kilogram - the mass $$M_\mathrm{IPK}$$of the international prototype kilogram - has been drifting slightly for some time, for a variety of reasons. A physical-constant-based definition (as opposed to an artefact-based definition) has been desired for some time, but only now does technology really permit a constant-based definition to work as an accurate standard. The kilogram is also getting a complete re-working. The current kilogram - the mass $$M_\mathrm{IPK}$$of the international prototype kilogram - has been drifting slightly for some time, for a variety of reasons. A physical-constant-based definition (as opposed to an artefact-based definition) has been desired for some time, but only now does technology really permit a constant-based definition to work as an accurate standard. 15 edited body edited Nov 18 '18 at 16:58 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges $$\ \$$ $$\ \$$ $$\ \$$ 14 Updated dependency-graph images with the BIPM recommended colors as per https://www.bipm.org/utils/common/pdf/SI-Illustration-Guidelines.pdf edited Nov 18 '18 at 16:29 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges $$\ \$$ $$\ \$$ Bounty Ended with 100 reputation awarded by Michael Seifert occurred Oct 26 '17 at 15:17 13 hello edited Oct 22 '17 at 18:22 AccidentalFourierTransform 26.5k1414 gold badges7575 silver badges134134 bronze badges 12 added 304 characters in body edited May 19 '17 at 17:51 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 11 added 80 characters in body edited Apr 18 '17 at 14:24 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 10 added 998 characters in body edited Apr 18 '17 at 14:02 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 9 replaced http://physics.stackexchange.com/ with https://physics.stackexchange.com/ edited Apr 13 '17 at 12:39 8 added 831 characters in body edited Aug 11 '16 at 17:55 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 7 added 5 characters in body edited Jan 28 '16 at 9:48 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 6 added 5 characters in body edited Jan 28 '16 at 1:50 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 5 deleted 2 characters in body edited Jan 28 '16 at 1:44 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 4 added 84 characters in body edited Jan 28 '16 at 1:38 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 3 edited body edited Jan 27 '16 at 21:50 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 2 edited body edited Jan 27 '16 at 21:40 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges 1 answered Jan 27 '16 at 21:27 Emilio Pisanty 90.5k2323 gold badges228228 silver badges466466 bronze badges