Hi, > See the following: > > http://www.nature.com/news/2010/100923/full/news.2010.487.html > > Of course, we're probably a few years away from seeing commercially > available > instruments with the required precision/accuracy...but it will come.
I read that the moving of NIST F1 1 floor indeed changed the frequency quite a bit. (The change in altitude was 11.5 feet) That article also mentioned that the warming up of the building itself in summer has an effect on some of the newest research clocks, because the environment changes shape... See http://www.wired.com/science/discoveries/news/2007/12/time_nist?currentPage=all (Not that those clocks are commercially available, though :-/ ) Greetings, Pieter. > > Jeff > Jeffrey K. Okamitsu, PhD, MBA > +1-609-638-5402 US Mobile Phone > +1-240-421-0692 GSM Mobile Phone > _______________________________________________ > 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.