This definitely does work. Look up "multifilar winding" on the Internet. 
It can lead to problems with end-to-end capacitance when high 
frequencies are involved, but for seismic frequencies it should work 
just fine.

Karl


Geoffrey wrote:
> Has Anyone tried taking like 10 separate spools of wire
> then marry the ends together then wind all ten
> simultaneous with like 500 turns
> then solder the output of one to the input of the
> other to get a 5000 turn coil ?
> 
> Would this work ?

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