Maps of the linear polarization I_p for disks with M_dust = 10^-4 M_⊙. The wavelengths λ and disk inclinations i are chosen to illustrate the reversal of the polarization vector in selected disk regions with increasing inclination and/or wavelength. The particles are compact spheres made of astronomical silicate. In the bottom right of each panel a sketch of the polarization pattern is plotted to distinguish whether a polarization reversal exists or not. The green box in the two single panels exemplarily indicates these cases.