Hot Metal Creates Light Out of Nothing. - Video

Why does a piece of metal begin glowing red even when it is not actually burning?

Heating matter can produce visible light, while flames can generate their colors through several different physical processes. The result connects temperature, radiation, atoms, and the surprising physics hidden inside something as familiar as a glowing piece of metal.

Perfect for anyone curious about fire, light, heat, and why hot objects seem to create color out of nowhere.