Arago point

{
  "id": "MLC-T-MET-003598",
  "term": "Arago point",
  "field": "Meteorology and atmospheric science",
  "definition": "A neutral point in the sky where the polarization of scattered skylight is zero. This point is located approximately 20 degrees above the antisolar point, though its exact position varies slightly with atmospheric conditions. It is named after French physicist François Arago, who discovered this phenomenon in 1810.",
  "url": "https://mlchart.com/terminology/meteorology/arago-point/"
}