Water - The Leidenfrost Maze

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PostSat Jan 25, 2014 6:17 am » by kentrb



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PostSat Jan 25, 2014 8:53 am » by Mydogma


kentrb wrote:


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Too Neat!..
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PostSat Jan 25, 2014 10:51 pm » by kentrb


:cheers: mydogma

The Leidenfrost effect is a phenomenon in which a liquid, in near contact with a mass significantly hotter than the liquid's boiling point, produces an insulating vapor layer keeping that liquid from boiling rapidly. This is most commonly seen when cooking; one sprinkles drops of water in a pan to gauge its temperature: if the pan's temperature is at or above the Leidenfrost point, the water skitters across the pan and takes longer to evaporate than in a pan below the temperature of the Leidenfrost point (but still above boiling temperature). The effect is also responsible for the ability of liquid nitrogen to skitter across floors. It has also been used in some potentially dangerous demonstrations, such as dipping a wet finger in molten lead[1] or blowing out a mouthful of liquid nitrogen, both enacted without injury to the demonstrator.[2] The latter is potentially lethal, particularly should one accidentally swallow the liquid nitrogen.[3]

http://en.wikipedia.org/wiki/Leidenfrost_effect


fire and water sure have an interesting relationship

hydrogen and oxygen make water
hydrogen and helium make fire ( sun )


a slow motion dance between the two


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