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Fyfluiddynamics
4w
239
Hot Droplets Bounce
- In the Leidenfrost effect, room-temperature droplets bounce and skitter off a hot surface.
- A layer of vapor cushions the droplets, insulating them from the hot surface.
- Hot and burning droplets can bounce off a room-temperature surface without vaporization.
- The bottom of the falling drop cools faster, increasing surface tension and creating a cushioning air layer for self-lubricating bouncing.
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