Question

What is black body radiation?

Answer 1

Explanation:

1. A black body is an idealization in physics that pictures a body that absorbs all electromagnetic radiation incident on it irrespective of its frequency or angle. In this article, we will be learning about blackbody radiation and some important laws related to it.
2. What is Black Body Radiation?
3. To stay in thermal equilibrium, a black body must emit radiation at the same rate as it absorbs, so it must also be a good emitter of radiation, emitting electromagnetic waves of as many frequencies as it can absorb, i.e. all the frequencies. The radiation emitted by the blackbody is known as blackbody radiation.

Characteristics of Blackbody Radiation

The characteristics of the blackbody radiation are explained with the help of the following laws:

1. Wien’s displacement law
2. Planck’s law
3. Stefan-Boltzmann law