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beam splitter

American  

noun

Optics, Photography.
  1. a mirror or prism that divides a beam of light into two parts by reflecting a part of the beam, used in camera range finders.


beam splitter British  

noun

  1. a system that divides a beam of light, electrons, etc, into two or more paths

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of beam splitter

First recorded in 1930–35


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

They can be made to do so with a beam splitter, a half-silvered mirror set at an angle that will, with equal probability, transmit a photon or deflect it by 90°.

From Science Magazine ● May 6, 2024

However, the light in one arm of the interferometer reflects off the surface of the beam splitter while the light in the other passes through it.

From Science Magazine ● Dec. 15, 2021

The thought experiment involves putting two interferometers side by side, such that each particle first encounters a beam splitter.

From Scientific American ● May 6, 2019

A second beam splitter then recombines the waves, which interfere with each other to shunt the photon toward either one of a pair of detectors.

From Science Magazine ● Oct. 27, 2017

Physicists using an interferometer, an experimental device that includes the beam splitter, toggled between combining the paths and leaving them separate.

From Scientific American ● Nov. 6, 2012

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