a device or apparatus designed to produce extreme cold or to carry/maintain extremely low temperatures.
From Greek 'kryos' (cold) + 'phoros' (bearer), literally 'cold-bearer,' named for its function of generating or transporting extreme cold in scientific experiments.
The cryophorus was an early demonstration of evaporative cooling—when a sealed tube with liquid evaporates under vacuum, the escaping liquid molecules steal so much heat energy that the remaining liquid freezes solid, creating ice from room temperature.
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