CHRISTIANSEN EFFECT IN THE Al<sub>2</sub>O<sub>3</sub> SMALL PARTICLES-LIQUID CRYSTAL SYSTEM
<i>Optical transmission of the small particles-liquid crystal (aluminum oxide in 4-methoxybenzilidene-4'-butylaniline) system has been investigated. Observed in a spectrum at room temperature is a transmission band with a maximum at 1896 сm</i><sup><i>-1</i></sup><i> that shifts towards the short-wave region under voltage applied and depends on temperature. Experimental results are explained taking into account both the optical uniformity of the system in a narrow frequency interval when the refractive index of the particle material is close to that of the matrix and the reorientation of liquid crystal molecules under electric voltage applied.</i>