Limiting angle

{
  "id": "MLC-T-MET-006968",
  "term": "Limiting angle",
  "field": "Meteorology and atmospheric science",
  "definition": "A critical angle of incidence, reflection, or scattering that defines the boundary for the observation of an atmospheric optical phenomenon or the operational range of a remote sensing instrument. For example, in the context of a rainbow, it relates to the specific angle of minimum deviation for light passing through raindrops, which determines the rainbow's angular radius. This angle is a fixed value of approximately 42 degrees for the primary bow.",
  "url": "https://mlchart.com/terminology/meteorology/limiting-angle/"
}