Perfect absorbers of electromagnetic radiation are also perfect emitters.

Question

Quizplus · Accepted Answer

Perfect absorbers of electromagnetic radiation absorb all incident radiation and convert it into other forms of energy, such as heat. Perfect emitters, on the other hand, radiate all incident energy as electromagnetic radiation. Since a perfect absorber absorbs all incident radiation, it also emits all the absorbed radiation, making it a perfect emitter as well. Therefore, the statement is true.

Perfect Absorbers of Electromagnetic Radiation Are Also Perfect Emitters