LASER

Laser

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation. Lasers differ from other sources of light because they emit light coherently. Spatial coherence allows a laser to be focused to a tight spot, enabling applications like laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over long distances, enabling applications such as laser pointers. Lasers can also have high temporal coherence which allows them to have a very ...

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laser

Noun

  1. A device that produces a monochromatic, coherent beam of light.

Noun (etymology 2)

  1. A gum resin obtained from certain umbelliferous plants.
  2. Such a plant.

Verb

  1. To cut with a laser
  2. To throw with laser-like precision


The above text is a snippet from Wiktionary: laser
and as such is available under the Creative Commons Attribution/Share-Alike License.

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