Question

state stefans law and braggs law

Answer 1

Answer:

Stefan's Law states that the radiated power density (W/m2) of a black body is proportional to its absolute temperature T raised to the fourth power. The emissivity e is a correction for an approximate black body radiator, where e = 1 – R, is the fraction of the light reflected (R) by the black body.

Answer 2

Stefan-Boltzmann law, statement that the total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperature. The law applies only to blackbodies, theoretical surfaces that absorb all incident heat radiation.