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[Phys-l] resonance



Applying a force at the proper time can increase the amplitude of swings.
Check out this very interesting video (4:33) at a Spanish religious
ceremony.

http://www.youtube.com/watch?v=iE_r6XhB4VE


Also click on the first one (4:02) under "Related Videos" to get a side
view of this.

http://www.youtube.com/watch?v=c6az7f1n_HU&feature=related


And to think about all the physics I've been missing! :)