It's true that this is really a feat given the difficulty of measuring these systematics.
Not to toot my own horn but... http://www.nist.gov/pml/div689/20140122_strontium.cfm ..... even just a few months ago we were talking about mid E-18 using an optical clock. -Ben On Thu, Apr 3, 2014 at 6:24 PM, Michael Perrett <mkperr...@gmail.com> wrote: > Wow, if 1 second in 300 million years is correct, that's around 1 E-16th. > M > > > On Thu, Apr 3, 2014 at 2:51 PM, Edesio Costa e Silva < > time-n...@tardis.net.br> wrote: > > > Full story at > > http://www.nist.gov/pml/div688/nist-f2-atomic-clock-040314.cfm > > > > Edésio > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.