David Rayne wrote:
> Thanks Dinesh and others that replied.
>
> But no-one answered the question which, précised, was why does the
> signal or the receptors interpretation of it vary so much.
Midge tried to but could not be understood :-)
The signal is of course a wave and there will be harmonics in it. Some
of these will sum and others cancel out.
Thus there will be odd dead spots, which will have areas on either side
of high signal strength.
There is a set of traffic lights on my way home, and if I am the second
car in the queue, radio 4 nearly disappears. A metre forward or back
from this point and the signal is fine. An example of the same
phenomenon, but probably with reflections off buildings coming into
play.
Trefor
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