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How to Make Smoke with an Empty Water Bottle

And the science behind this neat trick!

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By Benjamin Modo, published Oct 18, 2007
If this trick doesn't work for you the first time, try it again a few times more. You can also try twisting the bottle even more. Because of the pressure applied to the air inside, the water in the air condenses and the temperature increases. When the bottle quickly untwists, the pressure of the air decreases, and causes the temperature to quickly decrease, thus creating a small cloud of fog inside of the bottle.

Credit: Benjamin Satana
Copyright: Benjamin Satana
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