Define emissivity.

Solution

The emissivity of a body at a given temperature is defined as the ratio of the total emissive power of the body (e) to the total emissive power of black body at the same temperature.
Emissivity is represented by

straight capital epsilon

Some More Questions From Mechanical Properties of Fluids Chapter

What is temperature coefficient?

What is periodic motion?

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Mechanical Properties Of Fluids

Define emissivity.

Some More Questions From Mechanical Properties of Fluids Chapter

What is temperature coefficient?

What is periodic motion?

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What is time period?

Define frequency.

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In the displacement equation y = r sin(ωt/ + ϕ) what does ϕ called and what information does it give?

What determines the natural frequency of an oscillator?

Is there any relation between uniform circular motion and simple harmonic motion?

What is periodic motion?

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