[time-nuts] Yb clock - NPR Story on Atomic Clocks

John Miles john at miles.io
Fri Aug 23 18:03:13 EDT 2013


Don't you just love paying to access research that your taxes already paid
for?  Gives you a warm, fuzzy feeling all over. :-P

-- john, KE5FX
Miles Design LLC


> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of David McGaw
> Sent: Friday, August 23, 2013 11:06 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Yb clock - NPR Story on Atomic Clocks
> 
> Here is an announcement article:
> 
> http://www.sciencemag.org/content/early/2013/08/21/science.1240420.full
> 
> David
> 
> 
> On 8/23/13 10:51 AM, Frank Stellmach wrote:
> > Wow, this new type of clock is not even 100 times more longterm stable
> > than the Cs fountain clock, it's even short-term stable as a H-maser,
> > obviously.
> >
> > In the NIST article: http://www.nist.gov/pml/div688/clock-082213.cfm
> > it's told, that the 1s instability is the same as the 400,000 sec or 5
> > days stability of the Cs fountain clock, ie. 1e-15..1e-16, I assume.
> >
> > Perhaps NIST can provide the Allan deviation already.
> >
> > Frank
> >
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