quarterwave plate

quarter-wave plate

[kwawr-ter-weyv]
noun Optics.
a crystal thin enough to cause a phase difference of 90° between the ordinary and extraordinary rays of polarized light, thereby converting circularly polarized light into plane polarized light.
Compare half-wave plate.


Origin:
1880–85

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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