On Tue, 8 May 2001, Tim May wrote:
>>OTOH, Hams tend to work with considerably longer wavelengths, something you
>>could not project with easily concealed devices. I think it's pretty evident
>>that if you pour some 100kW on a 20-meter wave, you can wipe out just about
>>anything electronic.
>
>Only if you can couple the power into the target in the right way.
Started thinking about that about two seconds after hitting ^X. 20m is
certainly too much to make a good counter-example to microwaves, but some
octave higher a car should make a fine antenna. This still doesn't mean that
it couldn't act as a Faraday cage at the same time, but the current induced
might still mess things up, I think.
>Simplest counterexample: Faraday-shielded enclosure. 100KW at 20m will
>have no effect on devices inside.
This is one of the things I never understood -- ideal Faraday, fine. But how
about a physical mime, with finite, non-zero resistance and a physical limit
on the speed at which charge can move around? I mean, it should definitely
leak some of the LF inside as the charge carriers cannot move with infinite
speed along the perimeter of the cage, right?
>I plan to make this my one and only response here to this latest thread.
That's too bad. Iteration would be a positive thing for us newcomers.
Sampo Syreeni, aka decoy, mailto:[EMAIL PROTECTED], gsm: +358-50-5756111
student/math+cs/helsinki university, http://www.iki.fi/~decoy/front
