A double-paned window has two glass panes separated by a layer of air. Why is air, rather than glass, used to fill this space?

asked Feb 14, 2020 117k views

4 votes

A double-paned window has two glass panes separated by a layer of air. Why

is air, rather than glass, used to fill this space?

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5 votes

Answer:

The layer of air is used as an insulator. Otherwise the heat or cold would just travel through the glass.

Nick Humrich answered Feb 16, 2020

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3 votes

Answer: The conduction of heat is slowed by the air

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