Re: Expanding Space

From: N:dlzc D:aol T:com \(dlzc\) (net_at_nospam.com)
Date: 03/01/05 

Date: Tue, 1 Mar 2005 12:47:08 -0700

Dear George Dishman:

"George Dishman" <george@briar.demon.co.uk> wrote in message
news:d02enq$ets$1@news.freedom2surf.net...
>
> "N:dlzc D:aol T:com (dlzc)" <N: dlzc1 D:cox T:net@nospam.com>
> wrote in message news:Ut_Ud.82583$Yu.28642@fed1read01...
>> Dear Rudolf Drabek:
>>
>> "Rudolf Drabek" <rdrXs@aon.at> wrote in message
>> news:422430c4$0$15788$91cee783@newsreader01.highway.telekom.at...
>>>...
>>> For me the carrier of the field is the copper and the spacer.
>>
>> Actually the signal in the coax is carried along the outer
>> "layer" of the copper, and the inner layer of the shield.
>> Barely constrained to the metal...
>
> David, what's your view of the Poynting vector ?

I'm a mechanical engineer, so my comments will be uninteresting.
I just came across the discussion of where current ran, as a
function of frequency. And I note that some very high frequency
stuff has a metal-braided non-conductive fiber rope as the center
conductor of "coax" cable.

Some interesting stuff involving crossed field antennas though.
I suppose that is how "fractal" antennas (such as used in cell
phones) work...
URL:http://www.ee.surrey.ac.uk/Personal/D.Jefferies/poynting.html

David A. Smith

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