ABSTRACT
Radiation heat transfer takes place when two bodies at a distance exchange heat directly. It has an electromagnetic nature; hence, it does not need a medium. And as the temperature difference increases, radiation becomes more signicant. In the past the impact of radiation was generally ignored when temperature levels were considered low because of the difculty in handling the nonlinearity. However, this need not be the case with the advent of spreadsheets and their simple-to-use computing power.
