Corona current

{
  "id": "MLC-T-MET-004706",
  "term": "Corona current",
  "field": "Meteorology and atmospheric science",
  "definition": "An electric current that flows from a pointed or thin conductor into the surrounding air when the electric field strength at the conductor's surface exceeds a critical value. This phenomenon is often observed on high-voltage power lines or tall structures during thunderstorms. It is a form of electrical discharge that can produce a faint glow and a hissing sound.",
  "see_also": [
    "point discharge current"
  ],
  "url": "https://mlchart.com/terminology/meteorology/corona-current/"
}