Incandescence is the production of light through the heating of a material. It is a phenomenon that occurs when an object, such as the tungsten filament in an incandescent light bulb, is heated to a high temperature, causing it to emit visible light. This process is commonly used in incandescent lamps, where an electric current passes through the filament, heating it up and causing it to glow. In the case of incandescent light bulbs, the filament is typically made of tungsten, which has a high melting point and can withstand the high temperatures required for incandescence. When the electric current passes through the filament, it heats up and emits light.