Resonance

This link shows the standard wave vibrations related to the resonance, or the oscillation with maximum amplitude. http://www.colorado.edu/physics/2000/microwaves/standing_wave2.html media type="youtube" key="RihcJR0zvfM" height="344" width="425" This CH-47 is straped down and made to run at the resonance of its body. It runs at that frequency untill the vibrations destroys it.media type="youtube" key="DvQy9VY0s3w" height="344" width="425" the sparks from this Tesla coil make the sound you are hearing. Go to this link to see how to build your own [|http://capperlabs.dyndns.or...]