| http://www.w3.org/ns/prov#value | - ??=??/(K???q 2+Ps???E) . . (1) where ?? is the rotation viscosity of the ferroelectric liquid crystal, K is an elastic constant, p is a helical pitch, Ps is the magnitude of spontaneous polarization, and E is the intensity of the applied electric field (see ???FUNDAMENTAL OF LIQUID CRYSTAL AND DISPLAY,??? CORONA PUBLISHING CO., LTD.). q is a wave number given by q=2??/p.
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