fun with metronomes

[Mike O'Dell]

phase-locking is a powerful instinct (grin)

     -mo

On 4/25/13 10:21 AM, wb5mmb wrote:
> That is what I was thinking. I wonder how far from being on the same 
> frequency the metronomes can be and still synchronize?
>      Sandy
>     WB5MMB
>
>
> At 10:05 AM 4/25/2013, you wrote:
>> They are mechanically coupled. Notice toward the end of the video 
>> that the base that they are all resting on is moving. Years ago I saw 
>> a demo of two pendulums, each swinging from a bar drilled into a 
>> brick basement wall and several feet apart. Each pendulum was driven 
>> by a magnetic kick each time it passed through dead center, similar 
>> to the Foucault pendulum at the Smithsonian. Over a period of days, 
>> the two pendulums would synchronize. As I recall, they put an air 
>> baffle between them to eliminate air currents. It was apparently the 
>> very small movement of the brick wall that synched them up.
>>
>> On Apr 24, 2013, at 10:41 12PM, wb5mmb wrote:
>>
>> > I think I understand a bit of how this works.
>> >
>> > http://www.wimp.com/synchronizingmetronomes/
>> > more here
>> > http://www.youtube.com/user/IkeguchiLab
>> >
>> >     Sandy
>> >     WB5MMB
>> >
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