Re: making sound waves visible

[Herbert H Gottlieb <herbgottlieb@JUNO.COM>]

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.