Photographic barograph

{
  "id": "MLC-T-MET-007914",
  "term": "Photographic barograph",
  "field": "Meteorology and atmospheric science",
  "definition": "A type of barograph that records atmospheric pressure variations by using a light beam to trace a continuous line onto a moving photographic film or paper. A pressure-sensitive element, such as an aneroid capsule, controls the position of the light beam, which then exposes the photographic medium. This method provides a permanent and detailed visual record of pressure changes over time, offering high resolution for meteorological analysis.",
  "see_also": [
    "barograph"
  ],
  "url": "https://mlchart.com/terminology/meteorology/photographic-barograph/"
}