[time-nuts] Mercury Ion Clock

[paul swed]

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 <magnus at 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 <paulswedb at 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 <paulswedb at 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 <jimlux at 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)
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