Leidenfrost effect

The Leidenfrost aftereffect is a abnormality in which a liquid, in abreast acquaintance with a accumulation decidedly hotter than the liquid's baking point, produces an careful breath band which keeps that aqueous from baking rapidly. This is best frequently apparent back cooking; one sprinkles drops of baptize in a bucket to barometer its temperature—if the skillet's temperature is at or aloft the Leidenfrost point, the baptize skitters beyond the metal and takes best to clear than it would in a bucket that is aloft baking temperature, but beneath the temperature of the Leidenfrost point. The aftereffect is additionally amenable for the adeptness of aqueous nitrogen to bounce beyond floors. It has additionally been acclimated in some potentially alarming demonstrations, such as dipping a wet feel in aqueous lead1 or alarming out a affirmation of aqueous nitrogen, both allowable afterwards abrasion to the demonstrator.2 Such abstracts are potentially lethal.3

It is called afterwards Johann Gottlob Leidenfrost, who discussed it in A Tract About Some Qualities of Common Baptize in 1756.