Re: a frequency-variable resistor Re: request for braid data (was Another grounding question)

• To: tesla-at-pupman-dot-com
• Subject: Re: a frequency-variable resistor Re: request for braid data (was Another grounding question)
• From: "Antonio Carlos M. de Queiroz" <acmq-at-compuland-dot-com.br> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 09 May 1999 22:40:23 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Tesla List wrote:

> Copper braid works in a different way, by utilizing skin effect. A DC
> current from a low voltage source will flow through the entire
> cross-section of a given wire. However, as voltage increases, the
> charges that make up the current will repel itself (like charges repel)
> and be foreced to flow closer and closer to the surface of a given
> conductor. This is called the "skin effect" and explains why lightning
> blows clothes off, but rarely flows through the body. It also explains
> why a metal cage protects the occupant from high voltage (car in
> thunderstorm). The electrons literally push each other out of the middle
> of the car, to the outside.

Ok, but the skin effect is independent of the voltage. The reason is 
more magnetic than electric. Parallel wires with current in the same 
direction tend to move apart.

Antonio Carlos M. de Queiroz

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