The spectral emissive power E for a body at temperature T is

Last updated: 6/27/2023

The spectral emissive power E for a body at temperature T is plotted against the wavelength and area under the curve is found to be A At a different temperature T the area is found to be 9A Then 2 2 1 3 IdE d 2 2 T T 1 2 1 3 ATTE P