Angular dispersion

{
  "id": "MLC-T-OAG-000120",
  "term": "Angular dispersion",
  "field": "Oil and gas",
  "definition": "The variation of wave velocity with direction of travel, as occurs in an anisotropic medium where waves move faster along some paths than others. It leads to a ray velocity that differs from the phase velocity of the wavefront. In a medium with the same velocity in all directions, such as an isotropic homogeneous solid, angular dispersion is absent and ray and phase velocities coincide.",
  "subject": "Geophysics",
  "url": "https://mlchart.com/terminology/oil-and-gas/angular-dispersion/"
}