Boy I have to go back and check. I thought fountains used lasers and such to slow the atoms down. Are we speaking to some gas fountain without optics much like a traditional CS standard? Paul WB8TSL
On Tue, Sep 27, 2011 at 3:46 PM, Poul-Henning Kamp <p...@phk.freebsd.dk>wrote: > In message <CAP6i9MmntLTia=XXUafbyrp+e3=koc1TRSEvL= > g05emepq4...@mail.gmail.com> > , brent evers writes: > > >So at its most basic, I'm wondering what type of clock would make the > >most sense to consider - cesium fountain, or hydrogen maser? > > Based on what I can gather, a fountain is probably easier to make work > than any of the other, from a pure _mechanical_ point of view. > > The important detail to remember here, is that the people who have > built fountains so far, have all tried to get better performance > than very mature hydrogen masers and high performance cesiums. > > If your goal is simply to make "something that works" you probably don't > need 4 separate shields, niobium surface etc. > > That said, it's probably not a one weekend task. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > p...@freebsd.org | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > > _______________________________________________ > 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.
