... what it means is that the old style units were directional and if
you put the clamp on backward you would get no reading.. ;-)
Lester
On Jan 2, 2007, at 5:34 PM, Timothy H. Collins wrote:
>> OK Peter,
>
> If the magnetic field around a wire is equal to the permeability of
> free space times the current all divided by 2 time Pi times the
> radius of the wire, how does changing to resistor wire increase the
> magnetic field so as to get better inductance?
>
> Answer that and THEN we'll be learnin' LOL.
>
> I would like to hear an explanation from a physicist on this
> subject. When a wire carries a current there is a magnetic field
> around it. The inductor clamp on the timing light picks up that
> field. So, . . . does this mean the current carried by racing wires
> is small? To small to produce a "big enough" magnetic field? That
> doesn't make sense.
>
> Tim Collins
> Midland, MI
> 1966 AH Sprite
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