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#FakeOrFact

LeidenForceLeidenForce
2026-01-06

LeidenForce quiz of the day: can you solve our Fake or Fact?

In our Fake or Fact series, we test your science knowledge about the Leidenfrost effect!

Fake or fact: The Leidenfrost effect prevents the droplet from touching the surface, so it doesn’t heat up.Answer: FALSE (partly). The vapor layer separating the droplet from the surface strongly limits direct heat transfer. This slows the heating down, but does not suppress it: heat is still transferred through the vapor layer and by internal fluid motion. As a result, the droplet eventually evaporates — much more slowly than with direct contact.
LeidenForceLeidenForce
2025-12-04

LeidenForce quiz of the day: can you solve our Fake or Fact?
In our Fake or Fact series, we test your science knowledge about the Leidenfrost effect!

💬 Have a scientific question? Comment below—it could be our next Fake or Fact!

On an ultra-smooth surface, the Leidenfrost effect is amplified.FACT A rough surface encourages the formation of tiny boiling bubbles right where the liquid touches the material — a process known as nucleate boiling. An ultra-smooth surface, on the other hand, allows the vapor layer to form and remain more stable, which strengthens the vapor “cushion” characteristic of the Leidenfrost effect. As a result, the droplet stays levitated for longer and slides more easily. 👉 So: FACT, although it’s not the only factor. Temperature, surface cleanliness, and material type also play important roles.

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