• Question: What is the coldest recording you have ever got?

    Asked by anon-257711 on 26 Jun 2020.
    • Photo: Andrew McDowall

      Andrew McDowall answered on 26 Jun 2020:

      So far, outside, it’s -21°C on Lake Torneträsk, in January, in northern Sweden. Inside, it’s -260°C in a helium-cooled cryostat in Harwell, Oxfordshire.

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