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quarter-wave plate

   Also found in: Acronyms, Wikipedia 0.01 sec.
quarter-wave plate [′kwȯrd·ər ‚wāv ¦plāt]
(optics)
A thin sheet of mica or other doubly refracting crystal material of such thickness as to introduce a phase difference of one quarter-cycle between the ordinary and the extraordinary components of light passing through; such a plate converts circularly polarized light into plane-polarized light.
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According to Dr Nicholas Roberts, lead researcher, "Our work reveals for the first time the unique design and mechanism of the quarter-wave plate in the mantis shrimp's eye.
Mantis shrimps could inspire next gen DVD and CD players by Asian News International
A second circular polarizer will not work, because a circular polarizer is actually a linear polarizer with a device called a quarter-wave plate attached to the back.
Long exposures of moving water in bright light by Hearst, Joseph / PSA Journal
For a perfect quarter-wave plate these are related to [delta] and [psi] by the eq (2) [delta] = 1/2[pi]+2p (28) [psi]=[a.
Treasure of the Past VII by Steinberg, Harold L. / Journal of Research of the National Institute of Standards and Technology
 
 
 
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