[time-nuts] synchronizing a large number of weaklycoupled oscillators
hmurray at megapathdsl.net
Thu May 13 17:46:49 UTC 2010
> With physical oscillators coupling is limited by the speed of sound (in the
> medium, with pendulum clocks wood is lots quicker than air with 3-4 km/s)
> with electronic oscillators the speed of light. Latter means that their
> distance has to be short enough so that they lie within each other's
> lightcone within roughly the period of oscillation orelse they couldn't
> possibly causally influence each other.
That doesn't make sense to me.
Why can't oscillators interact if they are separated by multiple wavelengths?
The control loop probably gets more complicated if the delays are longer, but
it's a periodic signal. You can lock up with an offset of any integral
number of wavelengths.
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