Where does this come from, and can I check it?

The heavy gas conducts less heat than air and the sealed gap stays dry. The figure is taken from National Institute of Standards and Technology, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a everyday life fact?

Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Double glazing traps argon between two panes

The heavy gas conducts less heat than air and the sealed gap stays dry Two panes are separated by a spacer bar filled with desiccant and sealed at the edges, and the cavity is filled with argon, whose thermal conductivity is about a third lower than air's. Around 16 millimetres is close to the best gap, since a wider one starts to allow convection currents inside. Some units add a thin low emissivity coating to reflect heat back into the room. It sits in Mondo's everyday life collection, one of 200 facts that each trace back to the reference below.

Where this comes from

National Institute of Standards and Technology

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: windows, insulation, homes

Double glazing traps argon between two panes: the short answers

Where does this come from, and can I check it?: The heavy gas conducts less heat than air and the sealed gap stays dry. The figure is taken from National Institute of Standards and Technology, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a everyday life fact?: Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.