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Re: making sound waves visible



William...


Why don't you photograph the studetns as they flap their arms. This,
together with a short explanation would make a terrific cover story for
The Physics Teacher magazine.

Herb


On Mon, 13 Sep 1999 07:04:35 -0700 William Beaty <billb@ESKIMO.COM>
writes:


That's a much better method of setting up the visual patterns than
relying on human reaction time (while hoping that the spread in
reaction
times doesn't blur the resulting wave into indetectability)

No loud gunshots are needed. Just set up a loudspeaker at one end
of a long row of students outdoors, and have them flap their arms in
time
with the beat of the music they hear. Even better, fill a 2-D grid
with
students (on the soccer field) and place the loudspeaker at one end.