Electric light

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Electric light

Electric light (/ɪˈlɛktrɪk laɪt/) is a type of artificial light produced by electricity.

Etymology

The term "electric light" is derived from the Greek word "electron" meaning amber, and the Latin word "lux" meaning light. It was first used in the late 19th century, following the invention of the incandescent light bulb by Thomas Edison and Joseph Swan.

Definition

Electric light is defined as light produced by the movement of electrons through a conductor (usually a wire), in a process known as electroluminescence. The energy produced by this movement is released in the form of photons, which we perceive as light.

Types of Electric Light

There are several types of electric light, including:

  • Incandescent light bulb: This is the most common type of electric light. It works by passing an electric current through a thin filament, which heats up and emits light.
  • Fluorescent lamp: This type of light uses a gas-filled tube and a phosphor coating to produce light. The gas inside the tube is excited by an electric current, causing it to emit ultraviolet light. This light then strikes the phosphor coating, causing it to glow.
  • LED light: LED stands for Light Emitting Diode. This type of light works by passing an electric current through a semiconductor, which emits light.

Related Terms

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