Droplets levitating above a liquid surface show unusual motion (w/ video)

When drops of water are sprinkled on an extremely hot skillet, the drops can slide around the skillet for a full minute or so before evaporating. The phenomenon is called the Leidenfrost effect, which says that when a surface is significantly hotter than the boiling point of a given liquid (the “Leidenfrost point”), droplets of that liquid will take longer to evaporate than if the temperature of the surface were somewhat cooler – above the liquid’s boiling point but below the Leidenfrost point. (For water, the Leidenfrost point is 250