My wife and I will often stick bottles of water in the freezer for a little while, because, well, really cold water is refreshing. A few nights ago, I had done that, and I got to witness a neat phenomenon. When I first removed the bottle from the freezer, the water was still liquid and clear. But after I jostled it, the water almost instantly turned into a frozen slush.
This was a mild example of supercooling. The water was at the freezing point, but crystalization had not started yet. But when I disturbed the bottle, it set off a chain reaction, and the water froze before my eyes. Cool 🙂 (no pun intended)
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