Phase change may refer to:
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Phase transition
In physics, chemistry, and other related fields like biology, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic Sta ...
, the transformation from one thermodynamic state to another.
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Phase-change memory, a type of random-access memory.
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Phase change (waves), concerning the physics of waves.
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