RESONANCE & MAILING TUBES
I read a lesson on resonance. It called for cutting mailing tubes to
a length in cm of 17200 divided by the frequency of the tuning fork you would
WHAT IS THE NUMBER 17200 FROM?
It is probably from the speed of sound in air, which is around
330 or 340 meters/second. The wavelength of sound is then
(in centimeters) about 34000/frequency, and it looks like
they wanted your tube to be 1/2 the sound wavelength.
Click here to return to the Physics Archives
Update: June 2012