Radiant Energy

Radiant energy, abbreviated as \(E_r\), a type of kinetic energy that is transmitted without the movement of mass.

 

Radiant Energy formula
\(\large{ E_r = \sigma \; T_a^{4} }\)
Symbol	English	Metric
\(\large{ E_r }\) = radiant force	\(\large{lbf-ft}\)	\(\large{J}\)
\(\large{ T_a }\) = absolute temperature	\(\large{R}\)	\(\large{K}\)
\(\large{ \sigma }\)  (Greek symbol sigma) = Stefan-Boltzmann constant	\(\large{\frac{Btu}{ft^2\;hr\; R^4}}\)	\(\large{ \frac{W}{m^2-K^4} }\)