Electric light by the first practical electric arc light in 1806. By the 1870s, Davy's arc lamp had been successfully commercialized, and was used to light many public spaces. The development of a steadily glowing filament suitable for interior lighting took longer, but by the early twentieth century inventors had successfully developed options, replacing the arc light with incandescents. The energy efficiency of electric lighting has increased radically since the first demonstration of arc lamps and the incandescent light bulb of the 19th century. Modern electric light sources come in a profusion of types and sizes adapted to many applications. Most modern
Electric light heat lamps in fast food restaurants and toys such as the Easy-Bake Oven. Tungsten filament lamps have long been used as fast-acting thermistors in electronic circuits. Popular uses have included: A stylized depiction of a light bulb features as the logo of the Turkish AK Party. In circuit diagrams lamps usually are shown as symbols. There are two main types of symbols, these are: Electric light An electric light is a device that produces visible light from electric current. It is the most common form of artificial lighting and is essential to modern society, providing interior lighting for buildings and