Pump it up!
I got a link to this video by e-mail, and I think it's pretty amazing. How does it work?
It is a great trick , any way the phenomena happens because the soap breaks the surface tension of the water, like popping a balloon. It is the water that moves, not the pepper that is floating on it.
For more about surface tension visit this site.http://en.wikipedia.org/wiki/Surface_tension
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