TAI zone?

James.Barrett at fluor.com James.Barrett at fluor.com
Fri Jul 1 17:40:59 UTC 2011

Please remove me from the mailing list.  Too much email concerning this 
issue.  I would suggest meeting in a common virtual space and having a 
live discussion, rather then "replying all" when continuing to have this 
Thank You,
Terrence Barrett 

From:   David Magda <dmagda at ee.ryerson.ca>
To:     <tz at lecserver.nci.nih.gov>
Cc:     Paul Koning <paul_koning at Dell.com>, Guy Harris <guy at alum.mit.edu>
Date:   07/01/2011 01:29 PM
Subject:        Re: TAI zone?

On Jul 1, 2011, at 13:21, Paul Koning wrote:

> On Jul 1, 2011, at 1:16 PM, Guy Harris wrote:
>> If you care *that* much, you need something fancier, e.g. an atomic 
clock. :-)  I seem to remember some news article in the past year or so 
indicating that there might be some new type of atomic clock coming out 
that would be less expensive, but I can't seem to find it with some simple 
> There was a new clock that's particularly compact (an inch or so max 
dimension).  It wasn't clear just how it works, but it sounded like it's 
comparable in stability to a rubidium clock.
> In the meantime, I think the cheapest atomic time source is a GPS box.

Probably related to this:

> Now an atomic clock-on-a-chip is available that is the result of 10 
years of government-funded research and development. The chip is not cheap 
— $1,500 — but it costs less than conventional atomic clocks and the price 
is sure to go down as manufacturing gears up to meet demand from military 


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