What is Stefan Boltzmann law?

1 Answer
1s2s2p
May 9, 2018

The Stefan-Boltzmann law is #L=AsigmaT^4#, where:

  • #A# = surface area (#m^2#)
  • #sigma# = Stefan-Boltzmann (#~5.67*10^-8Wm^-2K^-4#)
  • #T# = surface temperature (#K#)

This law is used to find the luminosity (the rate of energy released), for an object given its surface temperature. This law assumes the body acts as a black-body radiator (an object that emits energy from the entire EM spectrum)

For a given object with a constant surface area, the Stefan-Boltzmann law says that luminosity is proportional to the temperature raised to the fourth power.

Related questions
See all questions in Stefan's Law
Impact of this question
9216 views around the world
You can reuse this answer
Creative Commons License