TRANSMITTED POLARIZED LIGHT is an illumination technique in which polarizing filters are placed above (Analyzer) and below (Polarizer) the specimen.  When these filters are engaged and crossed a black-out effect occurs called Extinction.  Specimens which are birefringent (having more than one index of refraction) will appear bright against the black background.  True Polarizing microscopes, often called petrographic microscopes,  will have a circular rotating stage, a centerable nosepiece, and a Bertrand lens for observation of conoscopic images (interference figures).  Polarizing microscopes can provide quantitative information about the specimen.  They are primarily used in geology for mineral thin sections, and by textile and forensic sciences for fiber analysis or asbestos identification.


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    Meiji MT9950 Trinocular LED Reflected / Transmitted Light Polarizing Microscope


    Meiji MT6130 Trinocular Polarizing Microscope (PLM) for Asbestos ID


    Meiji MT9000L Polarizing Microscope


    Labomed LX-POL Compound Polarizing Microscope


    Motic BA310T-POL Trinocular Polarizing Microscope


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