[time-nuts] NPR story on coupled pendulums

Peter Torry peter.torry at talktalk.net
Thu Jul 30 17:35:59 EDT 2015


Eric,

Yes, there is a benefit from using coupled pendulums.  As with any 
oscillator noise is the limiting factor and by using multiple pendulums 
the noise, mechanical disturbance, can be greatly reduced.  Two 
pendulums will suppress the x an y component and three pendulums will 
suppress the x, y ans z components.

There will be a consolidated response to the "scientists" enlightening 
them and showing the error of their ways.

Regards

Peter



On 30/07/2015 17:14, Eric Garner wrote:
> Is there any stability benefit to having a bunch of "coupled" pendulum
> clocks?
>
> On Wed, Jul 29, 2015 at 4:22 PM, Bill Beam <wbeam at gci.net> wrote:
>
>> These University Of Lisbon "Scientists" have rediscovered a very old wheel.
>>
>> Old physics:  Two coupled nearly identical harmonic oscillators have two
>> stable states.
>> They will operate with relative phase = zero or 180deg. How they are
>> coupled is not
>> an issue; they only need to be able to transfer energy one to the other.
>>
>>



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