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Make your own mini tornado! Better set of Instructions Here; http://www.physics.org/interact/physics-to-go/tame-tornado/index.htmlCCW or CW? http://www.loc.gov/rr/scitech/mysteries/coriolis.htmlPrint Fill one 20 Oz bottle with water Connect two bottles together using adapter Create High pressure system by inverting bottle with water above empty bottle. swirl water to get vortex started Watch mini tornado
20_Oz_Bottle Adapter
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20_Oz_Bottle Adapter
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$
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Free
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$