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Physics

Stefan-Boltzmann Law

Quick fact

The Sun's surface temperature is about 5,500°C, and its total power output is 3.8×10²⁶ watts – a direct consequence of the Stefan-Boltzmann law.

Why this is interesting

Why does a hot piece of metal glow red, then white as it gets hotter? The answer lies in a simple yet powerful law that governs how all objects radiate energy.