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Supercooling, [1] also known as undercooling, [2] [3] is the process of lowering the temperature of a liquid below its freezing point without it becoming a solid.
In condensed matter physics and physical chemistry, the terms viscous liquid, supercooled liquid, and glass forming liquid are often used interchangeably to designate liquids that are at the same time highly viscous (see Viscosity of amorphous materials), can be or are supercooled, and able to form a glass.
Allowing the subcooling process to occur outside the condenser (as with an internal heat exchanger) is a method of using all of the condensing device's heat exchanging capacity.
Freeze-avoidant insects cannot tolerate internal ice formation, so they avoid freezing by depressing the temperature at which their body fluids freeze. This is done through supercooling, the process by which a liquid cools below its freezing point without changing phase into a solid. In order for water to freeze, a nucleus must be present upon ...
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That is, the transformation is completed over a finite range of temperatures, but phenomena like supercooling and superheating survive and hysteresis is observed on thermal cycling. [15] [16] [17] Second-order phase transition s are also called "continuous phase transitions".
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