On Jul 21, 2006, at 6:58 AM, Joe Subich, W4TV wrote:
>
> Rich writes:
>
>> Nothing. Current is flowing vertically. What is the direction of
>> the EMF?
>
> How does current flow vertically in a helical filament?
mostly vertically. the pitch of the 3-500's helices is steep.
>
> The current must flow in/along the conductor - that's substantially
> horizontal
It's not. There's a photo of 3-500 helices that are bent in
"Parasitics Revisited in *QST* Magazine.
> which if I remember my physics from 40 years ago makes
> the force vertical up or down depending on the direction of the
> current (clockwise or counterclockwise).
>
> 73,
>
> ... Joe, W4TV
>
>
>
R L MEASURES, AG6K. 805-386-3734
r@somis.org
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