Opinions on Electric light

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For other uses, see Electric light (disambiguation).

An electric light is a device that produces visible light by the flow of electric current. It is the most common form of artificial lighting and is essential to modern society, providing interior lighting for buildings and exterior light for evening and nighttime activities. Before electric lighting became common in the early 20th century, people used candles, gas lights, oil lamps, and fires. Most electric lighting is powered by centrally generated electric power, but lighting may also be powered by mobile or standby electric generators or battery systems. Battery-powered lights, usually called "flashlights" or "torches", are used for portability and as backups when the main lights fail.

The two main categories of electric lights are incandescent lamps, which produce light by a filament heated white-hot by electric current, and gas-discharge lamps, which produce light by means of an electric arc through a gas. 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 a myriad of applications. The word "lamp" can refer either to a light source or an or the appliance that holds the source.


In the image below, you can see a graph with the evolution of the times that people look for Electric light. And below it, you can see how many pieces of news have been created about Electric light in the last years.
Thanks to this graph, we can see the interest Electric light has and the evolution of its popularity.

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