• Question: Does hot water freeze faster than cold water?

    Asked by till.bob to Yasmin on 16 Jun 2015.
    • Photo: Yasmin Ali

      Yasmin Ali answered on 16 Jun 2015:


      Hello! I was just about to say no, but I looked into it a bit more… and apparently under some conditions, hot water can freeze faster than cold water, it’s called the Mpemba effect, after a Tanzanian high school student who brought this phenomena up in 1969!

      Thanks for the question, I didn’t know about this!

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