[time-nuts] Non electrical time-nuttery

[Thomas A. Frank]

Rather like the Shortt clock, only magnetically coupled.

Nifty idea.

Tom Frank, KA2CDK


On Jan 9, 2010, at 3:36 PM, Bob Camp wrote:

> Hi
>
> How about a rotary pendulum on a quartz fiber spring with some kind  
> of trick magnets to drive it  / read it out? Put the pendulum and  
> spring inside an evacuated glass envelope to get around the vacuum  
> pump issue. The enclosure could be pretty small.
>
> Drive the magnets with a second external clock, and feedback  
> compensate it. Let the external clock do all the readout via a very  
> normal gear and pointers system. The trick would be getting the  
> feedback loop to work purely mechanically with enough gain to  
> "unload" the master pendulum.
>
> Bob
>
>
> On Jan 9, 2010, at 2:07 PM, Lux, Jim (337C) wrote:
>
>> OK.. So we're moving back in electrical technology....
>> But what about mechanical?  Could modern technology get a  
>> substantial (>order of magnitude) improvement over 19th century  
>> chronometers (either pendulum or balance wheel or whatever).  I  
>> know there's some really good quartz fiber torsional spring  
>> schemes, but I think they still need electrical means to keep them  
>> moving and to read it out.
>>
>> So how good can one do with a mechanical, hydraulic, (or chemical,  
>> I suppose) system?  Let's assume it has to have a "direct" readout  
>> that is human readable by a causal bystander.  (this starts to  
>> sound like the 10,000 year clock or whatever it is..)
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>
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