define perfect black body and also feerys black body
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A cavity with double sided walls made up of any substances, with a small aperture is said to be an excellent black body. This is known as Ferry's black body. It can also absorb all electromagnetic radiation fallen on it without depending on the wavelength.
pujaridipali0:
thanx
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1
Answer:
A cavity with double sided walls made up of any substances, with a small aperture is said to be an excellent black body. This is known as Ferry's black body. It can also absorb all electromagnetic radiation fallen on it without depending on the wavelength.
thanx
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