Making water flow uphill


The Leidenfrost effect
[Via Boing Boing]

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.

Really cool. They could make water droplets move in whatever direction they wanted. 
How if there were only a practical use for this.