How does a light bulb work to produce light?

A light bulb works by passing electricity through a filament, which heats up and produces light. The filament is usually made of tungsten, which glows when it reaches a high temperature. The glass bulb surrounding the filament is filled with an inert gas, such as argon, to prevent the filament from burning up. When the electricity flows through the filament, it causes the atoms in the filament to vibrate and release energy in the form of light.