In article <Pine.LNX.4.44.0605221140120.9320-100000@xxxxxxxxxxxx>,
Dominic-Luc Webb <dlwebb@xxxxxxxx> wrote:
> On 21 May 2006, Kit wrote:
> > Hi all,
> > I have an idle question. How do receiving antennas work. I have looked
> > at Wikipedia and Google but I cannot find an answer. So what is
> > actually picked up by the antenna? and how?
> > Thanks
> > -Kit
> Electromagnetic radiation impinges on the antenna, invoking a small
> voltage. Do you know about the three finger rule?
OK, you got my curiousity up with that one - I've never heard of a
"three finger rule" that has anything to do with antennas (or antennae,
if you prefer) so I went googling. Of the four (Count 'em... FOUR) hits
for "+antenna +"three finger rule"" I found, two involved situations of
the "Oops - the GPS on my boat broke, the compass is out, and I need to
get home. But how far away from home am I?" type. In this case, the
"three finger rule" involved using three fingers and the known height of
a distant object (such as a radio broadcast antenna, smokestack, or
lighthouse tower) to get an estimate of the distance between you and the
Somehow, I doubt this is the "three finger rule" you're talking about...
There were two other hits that looked semi-promising, but they were XLS
files, and I don't run (or even posess any) MicroSoft software, so
couldn't read them.
Care to clarify?
Don Bruder - dakidd@xxxxxxxxx - If your "From:" address isn't on my whitelist,
or the subject of the message doesn't contain the exact text "PopperAndShadow"
somewhere, any message sent to this address will go in the garbage without my
ever knowing it arrived. Sorry... <http://www.sonic.net/~dakidd> for more info