Freezing point of supercooled water varies with electric charge

(PhysOrg.com) -- Just as water can be superheated and remain liquid above the boiling point if there is no nucleating surface (such as a surface defect or a speck of dust), it can also become supercooled and remain liquid well below its freezing point of 0°C. Now scientists have found that supercooled water freezes at different temperatures in the presence of a surface with a positive or negative charge.

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