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Nicol prism

American  
[nik-uhl] / ˈnɪk əl /

noun

Optics.
  1. one of a pair of prisms used to produce and analyze plane-polarized light in a polarizing microscope.


Nicol prism British  
/ ˈnɪkəl /

noun

  1. a device composed of two prisms of Iceland spar or calcite cut at specified angles and cemented together with Canada balsam. It is used for producing plane-polarized light

"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 Nicol prism

First recorded in 1870–75; named after William Nicol (1768–1851), British physicist, its inventor

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.

Among others, the carefully considered modifications of the Nicol prism which have recently been devised by Prof. S.P.

From Scientific American Supplement, No. 441, June 14, 1884. by Various

It may be utterly quenched by a Nicol prism, the cloud from which it issues being caused to disappear.

From Six Lectures on Light Delivered In The United States In 1872-1873 by Tyndall, John

The circle revolving with the Nicol prism for changing the intensity of the star, has a diameter of 14 cm. and reads by means of two verniers to 6 min.

From Astronomical Instruments and Accessories by William Gaertner and Company

The Nicol prism, which serves as a polarizer, can, after turning the iris-diaphragm aside, be drawn out from under the latter.

From Microscopes and Accessory Apparatus Catalogue No. 40 by Leitz, Ernst

Light is polarized in several ways—by reflection, by transmission, but most commonly through what I have here, a prism of calcite, or Iceland spar, commonly called a Nicol prism.

From The Treasure-Train by Reeve, Arthur B. (Arthur Benjamin)

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