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Photonics Dictionary

deformation constant

Any of the constants that relate the tendency of the director to remain parallel to restoring torques throughout the media. The three constants of importance in liquid crystal displays are: splay -- a change in the direction of the director when moving at right angles to the director; bend -- a change in the direction of the director when traveling in the direction of the director; twist -- a change in the direction of the director when moving out of the direction of travel at right angles to the director.
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