Who knew cornstarch could be this much fun! I've been hearing rumbles of cornstarch recently on the internet as being able to create this semi-fluid-like substance that changes properties. Then a few days ago, I happened to catch "Late night with Dave Letterman" where he had some school kids showing their science projects. One of the kids had a swimming pool full of water and cornstarch. Basically it is a liquidy-soupy like substance when mixed to the right consistency BUT because the cornstarch particles are so tiny, when the surface of the "liquid" is interacted with in a sharp way (example running across the pool) it changes to reflect a hard non-liquid surface. Kooky huh? Well, just the other day I found this video online and it's really cool! It shows what this cornstarch and water does when it intereacts with a set vibration. (not sure what he has it hooked up to that vibrates it). I would image a speaker might be able to produce similar effects. Check it out! The "fingers" at the end are amazing and creepy at the same time.
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