Question

can anyone explain stefans law of chapter heat transfer .??

Answer 1

Stefan–Boltzmann law states that the total radiant heat energy emitted from a surface is proportional to the fourth power of its absolute temperature.
If E is the radiant heat energy emitted from a unit area in one second and Tis the absolute temperature (in degrees Kelvin), then E = σT4, t (σ) represents the proportionality constant, called the Stefan–Boltzmann constant.