Re: All that glisters is not gold

[brian whatcott <inet@INTELLISYS.NET>]

At 17:11 2/10/99 -0800, Bill wrote:
> ...inside the wire
> isn't the E x B energy flow directed INTO the wire?  The b-field is
> circles about the wire center.  The e-field is directed along the wire.
> The poynting vector field points inwards.

> William J. Beaty

This reminds me of a transmission line method that is not much used -
the uniax. It starts with a large diameter coax to transmit RF energy
 Then the coax shield becomes a divergent cone, leaving just the central
conductor.
 At the far end, a similar arrangement to 'capture' the wave again.
This is reputed to have possibly the lowest transmission loss available.
 But it is delicate, on several counts apparently: delicate to the weather,
 of course - but the uniax cannot turn corners either - the wave becomes
detached, one hears...

Brian
brian whatcott <inet@intellisys.net>
Altus OK