Visualization of anisotropic scattering properties of different dust species. Displayed are: a small particle in the Rayleigh limit (2πa < λ) in blue, an intermediate-sized particle (2πa ~ λ) in gray, and a large particle (2πa > λ) in red. The angle between the disk surface and incident stellar light is 3 degrees, equal to the flaring angle minus aspect ratio of the surface at 200 AU. The phase functions at 0.6 μm are plotted in polar coordinates, and normalized such that surfaces are equal (square root of intensity). The arrows indicate the direction and magnitude of light scattered towards the observer.