The Kid Should See This

Leidenfrost Maze: Self-propelled droplets on a hot jagged surface

The Leidenfrost Maze, designed and built by Carmen Cheng and Matthew Guy at the University of Bath, demonstrates how Leidenfrost droplets can be self-propelled in a controlled way by the jagged texture of the hot surface.

And what exactly is the Leidenfrost Effect? From PopSci:

The basic idea is, when a liquid comes in contact with something really hot—about twice as hot as the liquid’s boiling point, although it changes on certain factors like the size of the drop—the liquid never comes in direct contact with the surface; vapor acts as a barrier that keeps the two separated. When you flick drops of water on to a pan to check the heat, that skittering you see and hear is because of this effect.

Cheng and Guy made the aluminum block maze to inspire and share science with local school kids, though we’re guessing every school around the world would love a physics demonstration kit like this.

There are more excellent physics videos in the archives. 

via PopSci, thanks @kvetchup.

🌈 Related videos

Cook food using the sun’s heat – How to build a solar oven

Rion Nakaya

Coalescence cascade: A water drop dances in slow motion

Rion Nakaya

Making a kitchen knife from a roll of aluminum foil

Rion Nakaya

Flottille: Unfolding micro-origami by Etienne Cliquet

Rion Nakaya

The Geysers of Yellowstone National Park in action

Rion Nakaya

A full circle rainbow as seen from a construction crane

Rion Nakaya

A red hot ball of nickel is dropped in a cup of water

Rion Nakaya

Theodore Gray’s Periodic Table Table: A rare collection of elements

Rion Nakaya

A solid, liquid, & gas at the same time – The Triple Point

Rion Nakaya

 
Browse the TKSST Video Collections

Get 7 smart videos delivered every week.

 

Subscribe