Re: Is toroid a Faraday cage?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com>


> Also if the inner wall of a Faraday cage has infinite

> electrical "suction"


	I would describe this differently.  Think of the
	wall of the cage (for starters) as having some thickness.
	(compared to an electron, it does...)

> ie. it can never become charged no matter how much electricity

> is supplied to it,


	As more electrons (or holes, if some are handy) are
	pumped 'in' they immediately (ok light speed limit
	applies) repel each other, so the charge ends up on
	the OUTside.


> is the only difficulty in getting charge into the cage due to

> the repulsion of the electric field on the outside?


	A pretty question.  Has anyone measured increased
	belt drag in a van de Graaf?
	(I'm not saying it doesn't happen, just not sure...)
  --
	best
	dwp

...the net of a million lies...
	Vernor Vinge
There are Many Web Sites which Say Many Things.
	-me