Thursday, December 14, 2006

Instant Freezing Beer

Because beer comes in a sealed container, it's possible to chill it well below the normal freezing point and still have it in liquid form. This is interesting becasue when you top the top, the pressure drops and the beer freezes solid very quickly.



Here's the whole story.

Note that you can do the reverse process with hot liquids and a microwave oven, i.e. heat water past the boiling point but not have it boil. The trick is to have relavtively pure water with very few nucleation sites. If you add something with a little surface area, e.g. sugar, tea, instant coffee etc. the water will instantly boil up. This is a significant source of injury with tea btw.

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