Heliostat

{
  "id": "MLC-T-MET-006218",
  "term": "Heliostat",
  "field": "Meteorology and atmospheric science",
  "definition": "A device with one or more mirrors that automatically tracks the sun's apparent motion across the sky, reflecting sunlight onto a fixed target. The mirrors, controlled by a computer, adjust their orientation to compensate for the Earth's rotation, keeping the reflected beam stationary. In atmospheric science, heliostats are used to direct a stable, concentrated beam of sunlight for experiments such as solar simulation or the calibration of radiometric instruments.",
  "url": "https://mlchart.com/terminology/meteorology/heliostat/"
}