What materials do incandescent use?

Incandescent bulbs primarily use a tungsten filament, which is heated to produce light when an electric current passes through it. The bulb is typically made of glass, which encases the filament and is often filled with an inert gas, such as argon or nitrogen, to prevent the tungsten from oxidizing. The base of the bulb is usually made of metal, often aluminum or brass, for electrical connections.