LATENT HEAT, NUCLEATION, AND SUPERCOOLED LIQUIDS.
Reheater bags release latent heat and crystalize when they are triggered. This nicely demonstrates:
The material used here is Sodium Acetate TriHydrate with a freezing point of 58C (w/ nuclei), -10C (no nuclei). Thus at room temperature it can either be a supercooled liquid or a solid.
Nucleation is activated by clicking the spring loaded trigger button.
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