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Photos of a sample of blue-dyed water freezing, generating enough pressure to crack its glass container.  (Source: Menno Demmenie/ UvA)
Frost Damage

Why Bottles Shatter in the Freezer — And How to Prevent It

Ever wondered why your frozen water bottle cracks, even when it’s only half full? Scientists at the University of Amsterdam have cracked the mystery. Their research reveals that pockets of trapped liquid create extreme pressure as they freeze, strong enough to break glass. The solution? Smaller bottles and water-repellent surfaces can prevent the problem.

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