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Conoscopic interference pattern

Index Conoscopic interference pattern

A conoscopic interference pattern or interference figure is a pattern of birefringent colours crossed by dark bands (or isogyres), which can be produced using a geological petrographic microscope for the purposes of mineral identification and investigation of mineral optical and chemical properties. [1]

22 relations: Birefringence, Condenser (optics), Crystal structure, Extinction (optical mineralogy), Eyepiece, Geology, Index ellipsoid, Interference colour chart, Maltese cross, Mineral, Objective (optics), Olivine, Optic axis of a crystal, Optical mineralogy, Petrographic microscope, Phase telescope, Polarization (waves), Polarizer, Refractive index, Thin section, Wave interference, Waveplate.

Birefringence

Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light.

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Condenser (optics)

A condenser is an optical lens which renders a divergent beam from a point source into a parallel or converging beam to illuminate an object.

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Crystal structure

In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material.

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Extinction (optical mineralogy)

Extinction is a term used in optical mineralogy and petrology, which describes when cross-polarized light dims, as viewed through a thin section of a mineral in a petrographic microscope.

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Eyepiece

An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes.

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Geology

Geology (from the Ancient Greek γῆ, gē, i.e. "earth" and -λoγία, -logia, i.e. "study of, discourse") is an earth science concerned with the solid Earth, the rocks of which it is composed, and the processes by which they change over time.

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Index ellipsoid

In optics, an index ellipsoid is a diagram of an ellipsoid that depicts the orientation and relative magnitude of refractive indices in a crystal.

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Interference colour chart

In optical mineralogy an interference colour chart, first developed by Auguste Michel-Lévy, is a tool to identify minerals in thin section using a petrographic microscope.

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Maltese cross

The Maltese cross is the cross symbol associated with the Order of St. John since 1567, with the Knights Hospitaller and the Sovereign Military Order of Malta, and by extension with the island of Malta.

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Mineral

A mineral is a naturally occurring chemical compound, usually of crystalline form and not produced by life processes.

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Objective (optics)

In optical engineering, the objective is the optical element that gathers light from the object being observed and focuses the light rays to produce a real image.

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Olivine

The mineral olivine is a magnesium iron silicate with the formula (Mg2+, Fe2+)2SiO4.

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Optic axis of a crystal

An optic axis of a crystal is a direction in which a ray of transmitted light suffers no birefringence (double refraction).

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Optical mineralogy

Optical mineralogy is the study of minerals and rocks by measuring their optical properties.

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Petrographic microscope

A petrographic microscope is a type of optical microscope used in petrology and optical mineralogy to identify rocks and minerals in thin sections.

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Phase telescope

A phase telescope or Bertrand lens is an optical device used in aligning the various optical components of a light microscope.

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Polarization (waves)

Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations.

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Polarizer

A polarizer or polariser is an optical filter that lets light waves of a specific polarization pass through while blocking light waves of other polarizations.

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Refractive index

In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.

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Thin section

In optical mineralogy and petrography, a thin section (or petrographic thin section) is a laboratory preparation of a rock, mineral, soil, pottery, bones, or even metal sample for use with a polarizing petrographic microscope, electron microscope and electron microprobe.

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Wave interference

In physics, interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude.

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Waveplate

A waveplate or retarder is an optical device that alters the polarization state of a light wave travelling through it.

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Redirects here:

2V angle, Interference figure, Isogyre, Optic angle, Optic axis figure, Optic sign.

References

[1] https://en.wikipedia.org/wiki/Conoscopic_interference_pattern

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