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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

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See Examples For:

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

Because of that key difference, as the beam splitter itself expands and contracts, the light detector would pick up a signal.

From Science Magazine ● Dec. 15, 2021

In their experiment, preselected neutrons with a particular spin were sent, one by one, into a beam splitter, which is a device that splits a beam of particles into two.

From Scientific American ● May 6, 2019

Instead, the first beam splitter sends the photon down one path or the other, like a particle.

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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