Re: radio waves - brief history of time


Subject: Re: radio waves - brief history of time
From: Kevin Austin (kevin.austin@videotron.ca)
Date: Sun Aug 28 2005 - 18:26:18 EDT


This is a case where the same word has two different applications /
meanings. Radio has become (for many) a medium of (realtime? at one
time) broadcast communication (as distinct from narrowcasting).

But, possibly six of the parameters are:

     broadcasting / narrowcasting

     realtime / non-realtime

     present / time shifted

Best

Kevin

For radio waves, see "electromagnetic radiation" etc via Google.

At 14:52 -0600 2005/08/28, sylvi macCormac wrote:
>hello
>
>what do radio waves have to do with radio .. ?
>
>been reading S. Hawkings, A Brief History of Time ...
>
>thanks ahead for info / urls ...
>
>best regards, sylvi macCormac
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>http://www.sylvi.ca / na / da / bc
>siwash rock & soundscape composition
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



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