Light refraction: Right or left turn of rays as polarization effect

Media with negative dispersion are represented as a set of specialized scatterers that will change, at waves' absorption and their reemission, the sign of magnetic strength parallel to surface. In metamaterials such scatterers (turn elements) are represented by the open oscillatory contours. In natural substance (metals) their role can execute magnetic dipoles and electrical quadropoles induced by polarization. Their converting features become decisive in sufficiently thin films at suppressing dipole polarization, i.e., such phenomena are shown the dimensional (size) effects of media polarization. This approach leads to estimations of optical thickness of medium, in which a turn of refracted beam is observable.