Marvin sunshine recorder

{
  "id": "MLC-T-MET-007127",
  "term": "Marvin sunshine recorder",
  "field": "Meteorology and atmospheric science",
  "definition": "A historical instrument used to measure the duration of bright sunshine, consisting of a bimetallic strip that expands and contracts with temperature changes. This movement causes a pen to trace a line on a rotating drum, indicating when the sun is shining. It was an early method for quantifying solar radiation exposure.",
  "url": "https://mlchart.com/terminology/meteorology/marvin-sunshine-recorder/"
}