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Definition of «emitter»

An emitter is a device or component that produces, sends out, or gives off something such as electrical signals, light waves, sound waves, or particles. In electronics, an emitter is typically a transistor or diode that releases electrons from a semiconductor material in the form of current. It can also refer to a person who speaks, writes, or otherwise communicates ideas or information.

Usage examples

  1. The laser printer has an emitter that produces a beam of light to create images and text on paper.
  2. The smokestack of a factory is an emitter of harmful pollutants into the atmosphere.
  3. A remote control uses an infrared emitter to send signals to electronic devices such as TVs or air conditioners.
  4. In photography, a flashgun or external flash unit acts as an emitter of light to illuminate a scene.
  5. During an eclipse, the moon becomes an emitter of shadow, blocking the sunlight from reaching the Earth's surface.
  6. Wi-Fi routers have multiple antennas acting as emitters to transmit wireless signals for internet connectivity.
  7. In astronomy, stars are powerful emitters of light and energy, illuminating the vastness of the universe.
  8. Smoke detectors have a small radioactive material as an emitter to detect smoke particles in the air.
  9. LED lights are emitters of energy-efficient and long-lasting illumination for various applications.

Phrases with «emitter»

Sentences with «emitter»

  • One report concluded that China's total energy use now tops that of the United States, just a couple of years behind its rise to the top position on lists of emitters of carbon dioxide. (dotearth.blogs.nytimes.com)
  • Overwhelming disapproval was launched at the second largest emitter of greenhouse gases, with claims that it was acting fecklessly rejecting what many nations see as necessary progression towards a greener planet. (blog.politics.ox.ac.uk)
  • If food waste was a country it would be the third biggest emitter of greenhouse gases globally after China and the US. (sustainablebrands.com)
  • (see all sentences)

See also

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