Normal incidence

{
  "id": "MLC-T-CHM-013341",
  "term": "Normal incidence",
  "field": "Chemistry",
  "definition": "The orientation of propagating electromagnetic radiation that strikes a surface at a right angle. In this configuration, the direction of the radiation is perpendicular to the plane of the surface at the point of impact. The angle of incidence, which is measured between the incoming ray and the line normal (perpendicular) to the surface, is defined as zero degrees for normal incidence.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "angle of incidence",
    "electromagnetic radiation"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 756 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/normal-incidence/"
}