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Some other physics teacher and I were recently debating the singing_______________________________________________
rod demo
where an aluminum rod resonates after stroking it with fingers
rubbed in
rosin.
The debate was about whether the standing waves created were
transverse or
longitudinal. My gut feeling is the waves are longitudinal based
on the
manner in which the metal rod is stroked. Another teacher strongly
believed
that the waves must be transverse because the impressive volume of
the sound
is too great to be achieved longitudinally.
What do the rest of you think? Is there a compelling test or
evidence to
prove what type of wave it is?
Thanks,
Ralph von Philp