Physics Wikia UK
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The leidenfrost effect is a phenomenon in which a liquid forms a vapor layer instead of evaporating immediately, this is caused by temperatures greater than that liquids boiling point, Here is a video demonstrating the Leidenfrost effect.

Hand_vs._Liquid_Nitrogen_and_the_Leidenfrost_Effect

Hand vs. Liquid Nitrogen and the Leidenfrost Effect

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