Which law governs total emitted radiation from a blackbody in thermography?

Which law governs total emitted radiation from a blackbody in thermography?

Which law governs total emitted radiation from a blackbody in thermography? A) Fourier’s Law B) Newton’s Law C) Stefan–Boltzmann Law D) Ohm’s Law Answer: C) Stefan–Boltzmann Law This question is asking about the fundamental physical law that explains how much energy a perfect emitter (called a blackbody) radiates, which is extremely important in thermography because infrared cameras measure radiation, not temperature directly. When a body emits thermal radiation, the amount of energy it gives off depends strongly on its temperature, and this relationship is not linear but very steep. That is exactly what the Stefan–Boltzmann Law describes. According to the Stefan–Boltzmann Law, the total radiant energy emitted per unit surface area of a blackbody is proportional to the fourth power of its absolute temperature. In simple terms, if the temperature of an object increases slightly, the radiation it emits increases very rapidly. For example, if the temperature doubles (in Kelvin), the emitted rad…