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Pronunciation: ko-her'ens

Definition: A characteristic of laser light, in which all light waves are aligned and move in phase. This characteristic, along with collimation and monochromatism, defines the unique characteristics of laser light.

[L. cohaerentia, a sticking together, fr. co- (for cum), with, together, + haereo, to stick]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.