Magnus, But for a time-nut how can price even enter into the conversation? Plus it only draws 10s of watts. A green super duper clock. Other comment I read is that there is no part that will wear out. Granted I suspect over many years something happens, but its not the typical CS depletion. I might speculate the glass windows fog or something or on earth the evacuated chamber ultimately leaks or the metal in the vacuum release stuff. No idea but pretty sure I won't be putting a watch on ebay any time soon. Regards Paul WB8TSL
On Sat, Nov 1, 2014 at 6:42 AM, Magnus Danielson <mag...@rubidium.dyndns.org > wrote: > Hi Bob, > > The traditional Hg ion clock with it's 40,5 GHz frequency is doable, but > it would be interesting if it could be commercialized at a (time-nuts) > friendly price. > > The modern optical clock got much easier to work with when the frequency > comb was invented. The frequency comb and stable lasers is now > commercialized, but not cheap, not cheap at all. > > Cheers, > Magnus > > > On 11/01/2014 02:27 AM, Bob Camp wrote: > >> Hi >> >> Trapped ion clocks have been the “obvious successor” to a Cs tube for at >> least 30 years. There is a *lot* of very fancy work involved in getting >> from 10 MHz up to a very specific light wavelength with low ADEV and good >> phase noise….. >> >> Rocket science indeed. Time Nuts rocket science, but tough to do none the >> less. >> >> Bob >> >> On Oct 31, 2014, at 8:09 PM, paul swed <paulsw...@gmail.com> wrote: >>> >>> Humor aside. I did dig deeper. It seems that this technology could be >>> commercialized in larger volumes and might land in the same cost as a >>> good >>> CS does today. Technically it looks reasonable. >>> Regards >>> Paul >>> WB8TSL >>> >>> On Fri, Oct 31, 2014 at 1:45 PM, paul swed <paulsw...@gmail.com> wrote: >>> >>> Jim >>>> I am sorry to say thats the wrong clock picture. >>>> That picture is of 2 glass coffee tables and a toaster in between. >>>> I see you can order that art om ebay. Item number 142657nottoday3245 >>>> Regards >>>> Paul >>>> WB8TSL >>>> >>>> On Fri, Oct 31, 2014 at 1:36 PM, Jim Lux <jim...@earthlink.net> wrote: >>>> >>>> OK, I know you all want to go get one... >>>>> >>>>> http://discoverjpl.jpl.nasa.gov/posts/520 >>>>> >>>>> It's Bob Tjoelker in front of the Deep Space Atomic Clock (DSAC) being >>>>> tested for magnetic field sensitivity. It's a trapped ion clock, 1 >>>>> liter/1 >>>>> kg, orders and orders of magnitude better than a USO in performance. >>>>> >>>>> (if it's in the building I think it's in, the rebar is made of >>>>> non-magnetic stainless steel) >>>>> _______________________________________________ >>>>> 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. >> >> _______________________________________________ > 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.