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.