On Tue, 2008-02-12 at 12:37 +1030, Justin Richards wrote:
> Isnt Light and radio (or RF) both electromagnetic radiation, one
> visible, one not.?

Yes, but I think by pretty much all definitions "radio", or "radio
frequency" as you mention encompasses frequencies well below the visible
part of the spectrum.

That definition of course is always in flux, but for now I don't think
many people would consider light to be "radio".

TTYL
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