Re: [SI-LIST] : Re: Skin effect (Was: Nil)

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From: Kim Helliwell (khelliwe@acuson.com)
Date: Tue Sep 19 2000 - 10:35:28 PDT


Kim Helliwell wrote:
>
> I don't know how in-depth (pun not intended!) an answer you're seeking.
> The name of this effect is the skin effect. It comes
> directly out of Maxwell's equations when considering
> electric fields in conductors. What happens is that

Actually, I should have said magnetic fields, not electric
fields. The E-field inside a conductor is 0 because the
charges move to cancel out any E field; it's the mag field
that stores the energy and moves the charges, and that moves
the charges in a "good" conductor. And it's the mag field
that gets damped out inside the conductor.

I thought I better correct that before someone else did!

Kim

-- 
Kim Helliwell
Senior CAE Engineer
Acuson Corporation
Phone: 650 694 5030  FAX: 650 943 7260

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