Apertometer

{
  "id": "MLC-T-IND-000236",
  "term": "Apertometer",
  "field": "Industrial and trades",
  "definition": "An instrument designed to measure the numerical aperture of a microscope objective. The measurement determines the maximum cone of light that a lens can accept from a specimen, which is a key parameter for its resolving power. Numerical aperture is a dimensionless quantity; high-power oil immersion objectives can achieve values greater than 1.0, whereas dry objectives are limited to a theoretical maximum of 1.0.",
  "subject": "Optics and imaging",
  "translations": {
    "de": "Apertometer",
    "es": "apertómetro",
    "fr": "apertomètre"
  },
  "url": "https://mlchart.com/terminology/industrial/apertometer/"
}