What Is Black Body And What Are Its Characteristics?

1.	What Is Black Body And What Are Its Characteristics?
Answer» A perfect black body is the one which absorbs and also EMITS the radiations completely. In practice nobody is perfectly black. We have to coat the black color over the surface to MAKE a black body. Black body is said to be a perfect ABSORBER, SINCE it absorbs all the wavelengths of the incident radiation. The black body is a perfect radiator, because it radiates the entire wavelength absorbed by it. This PHENOMENON is called black body radiation.

Answer»

A perfect black body is the one which absorbs and also EMITS the radiations completely.
In practice nobody is perfectly black. We have to coat the black color over the surface to MAKE a black body.
Black body is said to be a perfect ABSORBER, SINCE it absorbs all the wavelengths of the incident radiation. The black body is a perfect radiator, because it radiates the entire wavelength absorbed by it. This PHENOMENON is called black body radiation.

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