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A material that has uniform properties in all directions. An isotropic crystals has the same refractive index when measured along each axes. It will not show any interference colors when examined with crossed polars. Examples of isotropic materials include glass, some plastics, and cubic crystals (e.g., sodium chloride).

Synonyms and Related Terms

isotropie (Fr.); isotropia (Port.)

Sources Checked for Data in Record

  • Walter C. McCrone, John Gustave Delly, The Particle Atlas, W. McCrone Associates, Chicago, IV, 1972
  • Submitted information Comment: José Delgado Rodrigues, LNEC, 2009.
  • ASTM, Standard Terminology of Microscopy, Annual Book of ASTM Standards, Section 14, General Methods and Instrumentation, ASTM, E175, 75-78, May 1982

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