1.

What is a perfect black body?

Answer»

A perfect black body is a theoretical OBJECT. It would have these properties:

  • It would ABSORB all the radiation that falls on it.
  • It would not reflect or transmit any radiation.

A perfect black body does not exist, it's a sort of calibration object that is taken as a reference to calculate the emission/absorption capability of other objects.

An object that is good at absorbing radiation is also a good EMITTER, so a perfect black body would be the best possible emitter of radiation.



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