Question

Define Athermanous Substances​

Answer 1

The substances do not allow the thermal radiation to pass through them easily is called Athermanous Substances.

For example :- water vapours,wood,carbon dioxide etc.

Answer 2

Explanation:

Substances that don't allow transmission of infrared radiation through them are called athermanous substances. - For example, wood, metal, CO2, water vapors, etc. Diathermanous substances -

Substances that allow transmission of infrared radiation through them are called diathermanous substances.

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