Stefan-Boltzmann law and Kirchhoff's law of radiation
In this video we will deal with the Stefan-Boltzmann law, which states that in thermal equilibrium the radiant power of an object is proportional to the fourth power of the temperature and directly proportional to its surface area! We will also derive Kirchhoff's law of radiation, which states that in thermal equilibrium the absorbed power of an object is equal to its emitted power.
00:23 Blackbody radiation
00:23 Radiant power
03:09 Stefan-Boltzmann law
05:58 Kirchhoff’s law of thermal radiation
09:02 Grey bodies