The Leidenfrost effect

From Science Friday, a video by Luke Groskin about something amazing that we see whenever we cook, but rarely think about.

In the Leidenfrost Effect, a water droplet will float on a layer of its own vapor if heated to a certain temperature. This common cooking phenomenon takes center stage in a series of playful experiments by physicists at England's University of Bath, who discovered new and fun means to manipulate the movement of water.

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  1. Liquid nitrogen does this at room temperature too.
    If you pour some on the floor little droplets will go zooming off in all directions.

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