Immersion objective

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A microscope objective that uses a liquid in the space between the objective and the sample instead of air. The liquid, when it has a refractive index greater than 1, provides an increased numerical aperture and thus better resolution.

Synonyms and Related Terms

Immersionsobjektiv (Deut.); objectif à immersion (Fr.);

Resources and Citations

  • ASTM, Standard Terminology of Microscopy, Annual Book of ASTM Standards, Section 14, General Methods and Instrumentation, ASTM, E175, 75-78, May 1982
  • Walter C. McCrone, John Gustave Delly, The Particle Atlas, W. McCrone Associates, Chicago, IV, 1972

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