Google
×

Electric light

An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting. Lamps usually have a base made of ceramic, metal, glass, or plastic, which secures the lamp in the socket of... Wikipedia
First production: 1879; 145 years ago by Joseph Swan and Thomas Edison (first demo of incandescent bulb)
Invented: 1809; 215 years ago by Humphry Davy (arc lamp)
Working principle: Luminescence by electricity