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A petrographic microscope is a type of optical microscope used to identify rocks and minerals in thin sections. The microscope is used in optical mineralogy and petrography, a branch of petrology which focuses on detailed descriptions of rocks. The method includes aspects of polarized light microscopy (PLM).
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microscope polarizing petrographic light optical minerals rocks nicol lens polarization filters polarized used microscopes eyepiece interference prisms one identify mineralogy
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Petrographic microscope | is a | type of optical microscope used to identify rocks and minerals in thin sections | 0.90 | text |
| air | instance of | When only an isotropic material | 0.80 | text |
| water | instance of | When only an isotropic material | 0.80 | text |
| or glass exists between the filters | instance of | When only an isotropic material | 0.80 | text |
| all light is blocked | instance of | When only an isotropic material | 0.80 | text |
| but most crystalline materials | instance of | When only an isotropic material | 0.80 | text |
| minerals change the polarizing light directions | instance of | When only an isotropic material | 0.80 | text |
| allowing some of the altered light to pass through the analyzer to the viewer | instance of | When only an isotropic material | 0.80 | text |
| Petrographic microscope | related to Description | Depending | 0.60 | section |
| Petrographic microscope | related to Description | Adding | 0.60 | section |
| Petrographic microscope | related to Description | Nicol | 0.60 | section |
| Petrographic microscope | related to Description | Bertrand | 0.60 | section |
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