The flux (left) and degree of linear polarization P (right) of incident unpolarized light that is singly scattered by the cloud particles, haze particles, and gaseous molecules (solid black line) at the central wavelengths of the filters. Note that the wavelength dependence of the molecular scattering (through the depolarization factor; see Equation (10)) is so small that we show only one line. All flux curves are normalized such that their average over all scattering directions is 1.0. A positive P_s indicates a direction of polarization perpendicular to the scattering plane (the plane containing the incident and scattered light beams), and a negative P_s indicates a direction parallel to the scattering plane. The black dashed vertical lines indicate the single-scattering angle corresponding to Venus's phase angle at the time of our observations, and the black dashed horizontal line in the polarization plot indicates P = 0.