For ten points, name this process in which electromagnetic radiation changes its direction due to the presence of deviations from uniformity in the medium through which the light passes.
BART is one type of code used to model this phenomenon when layered spheres are involved, while the discrete dipole approximation is used for modelling this process with non-spherical particles. For simple spherical particles, this phenomenon can be modelled using a solution of Maxwell's equations named for Lorenz, Debye, and Mie.  Various inelastic versions of this process bear the names of Brillouin, Raman, and Compton. Perhaps the most visible manifestation of this phenomenon is the blueness of the sky, which results from a variety of this phenomenon  named for Rayleigh. For ten points, name this process in which electromagnetic radiation changes its direction due to the presence of deviations from uniformity in the medium through which the light passes.
BART is one type of code used to model this phenomenon when layered spheres are involved, while the discrete dipole approximation is used for modelling this process with non-spherical particles.
{Scattering}