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- Conoscopic_interference_pattern abstract "This page is about the geology/optical mineralogy term. For general information about interference, see Interference (wave propagation) or Interference patterns.A conoscopic interference pattern or interference figure is a pattern of rings caused by optical interference observed when diverging light rays travel through a non isotropic substance. It is the best way to determine if a mineral is uniaxial or biaxial and also for determining optic sign in optical mineralogy. The observed interference figure essentially shows all possible birefringence colors at once, including the extinctions (in dark bands called isogyres).In optical mineralogy a petrographic microscope and cross-polarized light are often used to view the interference pattern. This is done by placing a Bertrand lens (Emile Bertrand, 1878) between a high-power microscope objective and the eyepiece. The microscope's condenser is brought up close underneath the specimen to produce a wide divergence of polarized rays through a small point. There are many other techniques used to observe the interference pattern.A uniaxial mineral will show a typical 'Maltese' cross shape and its isogyres, which will revolve/orbit around a projection of the optical axis as the stage is rotated.A biaxial mineral will typically show a saddle-shaped figure (with one isogyre thicker than the other, typically) that will often morph into two curved isogyres (called brushes) with rotation of the stage. The difference in these curved isogyres is known as the "2V" angle. In minerals that have far-off-center optic axes, only one part of the above sequence may be seen. On either side of the saddle the interferences rings surround two eye like shapes called melanotopes. The closest bands are circles, but further out they become pear shaped with the narrow part pointing to the saddle. The larger bands surrounding the saddle and both melanotopes are figure 8 shaped.A Michel-Levy Chart is often used in conjunction with the interference pattern to determine useful information that aids in the identification of minerals.".
- Conoscopic_interference_pattern wikiPageID "25124911".
- Conoscopic_interference_pattern wikiPageLength "2796".
- Conoscopic_interference_pattern wikiPageOutDegree "12".
- Conoscopic_interference_pattern wikiPageRevisionID "681205932".
- Conoscopic_interference_pattern wikiPageWikiLink Bertrand_lens.
- Conoscopic_interference_pattern wikiPageWikiLink Birefringence.
- Conoscopic_interference_pattern wikiPageWikiLink Category:Optical_mineralogy.
- Conoscopic_interference_pattern wikiPageWikiLink Category:Optics.
- Conoscopic_interference_pattern wikiPageWikiLink Interference_(wave_propagation).
- Conoscopic_interference_pattern wikiPageWikiLink Interference_colour_chart.
- Conoscopic_interference_pattern wikiPageWikiLink Interference_pattern.
- Conoscopic_interference_pattern wikiPageWikiLink Mineral.
- Conoscopic_interference_pattern wikiPageWikiLink Optical_mineralogy.
- Conoscopic_interference_pattern wikiPageWikiLink Petrographic_microscope.
- Conoscopic_interference_pattern wikiPageWikiLink Phase_telescope.
- Conoscopic_interference_pattern wikiPageWikiLink Polarization_(waves).
- Conoscopic_interference_pattern wikiPageWikiLink Polarized_light.
- Conoscopic_interference_pattern wikiPageWikiLinkText "2V".
- Conoscopic_interference_pattern wikiPageWikiLinkText "Conoscopic interference pattern".
- Conoscopic_interference_pattern wikiPageWikiLinkText "conoscopic interference pattern".
- Conoscopic_interference_pattern wikiPageWikiLinkText "interference pattern".
- Conoscopic_interference_pattern hasPhotoCollection Conoscopic_interference_pattern.
- Conoscopic_interference_pattern wikiPageUsesTemplate Template:Cite_book.
- Conoscopic_interference_pattern wikiPageUsesTemplate Template:Technical.
- Conoscopic_interference_pattern subject Category:Optical_mineralogy.
- Conoscopic_interference_pattern subject Category:Optics.
- Conoscopic_interference_pattern type Article.
- Conoscopic_interference_pattern type Article.
- Conoscopic_interference_pattern type Page.
- Conoscopic_interference_pattern type Science.
- Conoscopic_interference_pattern comment "This page is about the geology/optical mineralogy term. For general information about interference, see Interference (wave propagation) or Interference patterns.A conoscopic interference pattern or interference figure is a pattern of rings caused by optical interference observed when diverging light rays travel through a non isotropic substance. It is the best way to determine if a mineral is uniaxial or biaxial and also for determining optic sign in optical mineralogy.".
- Conoscopic_interference_pattern label "Conoscopic interference pattern".
- Conoscopic_interference_pattern sameAs Konoskopisk_interferensmønster.
- Conoscopic_interference_pattern sameAs m.09gj1k6.
- Conoscopic_interference_pattern sameAs Q5162315.
- Conoscopic_interference_pattern sameAs Q5162315.
- Conoscopic_interference_pattern wasDerivedFrom Conoscopic_interference_pattern?oldid=681205932.
- Conoscopic_interference_pattern isPrimaryTopicOf Conoscopic_interference_pattern.