The factor e, or emissivity, figures into this equation along with another constant, signified by sigma.  It can be stated as "delta Q" over "delta t" is equal to "e times sigma times A, or area, times T, or temperature, to the fourth."  Applying only to blackbodies, its simple statement is that the total radiant heat energy emitted by a surface is proportional to the fourth power of its absolute temperature.  FTP, identi
The factor e, or emissivity, figures into this equation along with another constant, signified by sigma.  It can be stated as "delta Q" over "delta t" is equal to "e times sigma times A, or area, times T, or temperature, to the fourth."  Applying only to blackbodies, its simple statement is that the total radiant heat energy emitted by a surface is proportional to the fourth power of its absolute temperature.  FTP, identify this equation named for its two Austrian discoverers.
The factor e, or emissivity, figures into this equation along with another constant, signified by sigma.  
Stefan-Boltzmann equation (do not accept just "Boltzmann" equation)