[time-nuts] Physical Clocks

[Dr. David Kirkby]

Brooke Clarke wrote:
> Hi Bill:
> 
> I for one think physical clocks are will within the [time-nuts] charter 
> if they are of the precision type.
> I too am interested in them.
> 
> Have Fun,
> 
> Brooke Clarke, N6GCE
> 

The newsgroup alt.horology is good for physical clocks. I had some 
interesting discussions on there reguarding syncing them to crystal 
standards. By syncing, I was talking of open-loop system, with no feedback.

http://groups.google.co.uk/groups?hl=en&lr=&threadm=4249f2dc%40212.67.96.135&rnum=1&prev=/groups%3Fq%3Dquartz%2Bcontrol%26hl%3Den%26lr%3D%26group%3Dalt.horology%26selm%3D4249f2dc%2540212.67.96.135%26rnum%3D1

There was discussions about the limitations of these "radio controlled 
clocks" which it appears are only updated once per day, so whilst having 
good long term accuracy, the short term is poor.

However, most of it is not precision devices, but it is well worth 
looking at.

-- 
Dr. David Kirkby PhD CEng MIEE,
Senior Research Fellow,
Department of Medical Physics,
Mallet Place Engineering Building,
Gower St,
University College London,
London WC1E 6BT.