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Re: Waves



You can show to the students the presence of harmonics by
gently touching a vibrating wire where the harmonic has a node.
This will quench the vibrations of other harmonics which do not
have a node at that point. By this method you can supress the
fundamental and make the student to listen to the second harmonic
by gently touching the wire in the middle and so on. Higher harmonics
are feeble and therefore one has to listen to them carefully.

regards,

Sarma.
At 09:16 AM 7/3/00 -0400, you wrote:
Am I correct in explaining string instruments, to say that a string
actually vibrates in many modes simultaneously when bowed or plucked?
That is, is it producing its fundamental along with several harmonics
all at the same time?

Is it possible to show this behavior (if the notion is correct) with a
string vibrator or other equipment, rather than just postulating to
students that this does in fact occur?

Thanks for any assistance on this one.

Dave Abineri


--
David Abineri dabineri@choice.net