Wave propagation is the study of how waves, such as sound, light, or seismic waves, travel through various mediums. This research area examines the behavior of waves as they move through different materials, including liquids, gases, and solids, and how they interact with boundaries and obstacles. Wave propagation research is used in a wide range of fields, including telecommunications, acoustics, seismology, and optics, to improve the understanding and manipulation of wave phenomena.