Stefan Boltzman Law

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Stefan Boltzmann Law

Stefan Boltzman Law states that the total energy radiated from black body radiation that is emitted by a surface is porportional to the fourth power of its absolute temperature.

Stefan Boltzmann Law Formula

\(\large{ P =  \epsilon \sigma T_a^4 A  }\)

Where:

\(\large{ A }\) = area of the emitting body

\(\large{ P }\) = radiate energy

\(\large{ T_a }\) = absolute temperature

\(\large{ \epsilon }\)  (Greek symbol epsilon) = emissivity of the material

\(\large{ \sigma }\)  (Greek symbol sigma) = Stefan Boltzmann Constant

Stefan Boltzmann Constant

Stefan Boltzman Constant ( \(\sigma\) ) (also called Stefan Constant) has a value of \(\large{ \; 5.670373 \;\;x\;\; 10^{-8} \; W/m^2/K^4  }\) 

 

Tags: Equations for Temperature