This Is What Happens When You Boil And Freeze A Liquid At The Same Time

Yes, it’s real.

1. This video shows what happens when you get the temperature and pressure of a liquid just right…

2. So that at first it freezes.

Tom Enstone /

3. Then it boils.

Tom Enstone /

4. Then… it does both at the same time?

Tom Enstone /

5. This (unspecified) liquid appears to have reached its “triple point”, where it exists as a solid, a liquid and a gas at the same time.

Liquids start behaving strangely around this temperature and pressure. For example, below the triple point pressure, when ice is heated it turns directly into water vapour without first becoming a liquid.

6. Which is pretty neat.

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Kelly Oakes is science editor for BuzzFeed and is based in London.
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