Becke line method


Becke line method
   A method for determining the refractive index of a fiber relative to its mountant by noting the direction in which the Becke line moves when the focus is changed. The Becke line will always move toward the higher refractive index medium (fiber or mountant) when focus is raised and will move toward the lower refractive index medium when focus is lowered. Is a traditional means for matching a particle with an immersion liquid.

Forensic science glossary. . 2012.

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