On 23/09/2012 11:19, Fons Adriaensen wrote:
On Sun, Sep 23, 2012 at 09:31:30AM +0100, Augustine Leudar wrote:
except its not quite the same effect. If I hear a plan(ish) wave in nature
such as in thunder or a very distant giant waterfall
I doubt very much if either would be a plane wave.
Well, he does say plan(ish) :-) However, I tend to agree because lightning is a vertical line
source and a waterfall tends to a horizontal line source. Probably a closer approximation to a true
plane wave would stem from things much closer to the (non-existent) true point source, such as
distant gunshots or other explosive discharges with a small physical extent.
Dave
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