On Wed, 18 Feb 2004 at 22:16:27 in message
%uRYb.353608$na.522124@attbi_s04, Jay Honeck
wrote:

I've never heard of anyone frying their retinas by looking at a radio
transmitter, but this begs the question: Can the lens in your eye focus
radio waves?

No, Firstly the transparency of materials to EM radiation varies with
frequency. Secondly the wavelength of the transmissions is very large
compared to the lens in your eye. A 3GHz transmission has a wavelength
of 10cm.Red light, the longest wavelength of visible light has a
wavelength of about 1 micron (! millionth of a metre).

E&OE
--
David CL Francis