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Re: EMP


On 23 Aug 2003 at 13:48, Fiesta Cranberry wrote:

> Each weapon produced a peak field in
> excess of 100,000 volts per meter. 

Field measurements like this are just the open air estimates. They are almost 
totally theoretical, because any attempt to actually measure them distorts the 
field, reducing it in general. For comparison, you should know that there is a 
field of about 100V/m above a flat meadow on any cloudless sunny day, but when 
we walk out into that field the field distorts and we feel nothing. On stormy 
days, the field gets much higher, but I don't know the figures for that.

What field would be felt inside a car or inside the ECU would depend on the 
effectiveness of the shielding, the length of the wires leading outside the ECU 
box, and the frequencies present in the EMP. The currents generated by these 
fields would then depend on the impedances, which are also a function of 
frequency. It's not a simple problem at all.  

Who knows, we might do rather well, but "survival" in such a situation would 
still only be temporary for the vast majority of us.

-- 
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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