A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. A laser differs from other sources of light because it emits light coherently allowing to be focused to a tight spot and to stay narrow over long distances.

Usage

See Special:Whatlinkshere/Etymology:Laser for a list of articles using this term.

This is an etymology page: a page detailing the origins of terminology used in the series in regards to real world culture and history.