The Leidenfrost effect lets water droplets float on a cushion of vapor.

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[00:00:00]The Leidenfrost effect lets water droplets float on a cushion of vapor.

[00:00:04]When a liquid touches a surface significantly hotter than its boiling point, it doesn't instantly evaporate.

[00:00:10]Instead, the bottom layer of the droplet vaporizes instantly, creating a microscopic insulating pocket of steam.

[00:00:18]This vapor barrier traps the rest of the droplet, preventing direct contact with the hot surface, and allowing it to skate and hover smoothly across the pan like a hockey puck. Learn more at ODTutor.