• Question: . What is the hottest and coldest substance you have encountered?

    Asked by anon-210388 to Tori, Titus, Stuart, Hannah, Gill, Alessandro on 8 Mar 2019.
    • Photo: Stuart Higgins

      Stuart Higgins answered on 8 Mar 2019:

      As a scientist the coldest material I’ve worked with is liquid helium, which is -270 degrees Celsius. The hottest material I’ve worked with is a plasma, which I think was a few million degrees Celsius (but only a very small amount, so doesn’t look very impressive).

    • Photo: Gill Harrison

      Gill Harrison answered on 10 Mar 2019:

      I only deal with humans, so can’t really answer this well.

    • Photo: Hannah Dalgleish

      Hannah Dalgleish answered on 11 Mar 2019:

      The hottest substance was lava when I was in Hawaii! The coldest was probably when I jumped into Lake Baikal in Siberia in November many years ago!

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