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Superheating
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High Quality Content by WIKIPEDIA articles! In physics, superheating (sometimes referred to as boiling retardation, or boiling delay) is the phenomenon in which a liquid is heated to a temperature higher than its boiling point, without boiling. Superheating is achieved by heating a homogeneous substance in a clean container, free of nucleation sites, while taking care not to disturb the liquid.Water is said to "boil" when bubbles of water vapor grow without bound, bursting at the surface. For a vapor bubble to expand, the temperature must be high enough that the vapor pressure exceeds the ambient pressure ? the atmospheric pressure, primarily. Below that temperature, a water vapor bubble will shrink and vanish.

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Stand: 18.01.2020
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