Chemical Engineering - Heat Transfer - Discussion

Discussion Forum : Heat Transfer - Section 3 (Q.No. 34)
34.
A diathermaneous substance __________ the thermal radiation completely.
absorbs
reflects
transmits
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Ajay rao said:   3 years ago
A body which allows heat radiation to pass through it is called a Diathermanous Body (diathermic or diathermal body).
Example: oxygen, quartz, hydrogen, iodine.

An athermanous Body is a body which doesn't allow the passage of heat radiation through it. Example: Moist air, water, wood, etc.
(1)

Blinku said:   7 years ago
But why? Explain.

Sunil Tiwari said:   7 years ago
A diathermaneous substance transmits all the radiation so that it doesn't get heated. Example is air which never get heated because off all the direct radiation on it.

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