birefringence


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Related to birefringence: circular birefringence

birefringence

 [bi″re-frin´jens]
the quality of transmitting light unequally in different directions.

dou·ble re·frac·tion

the property of having more than one refractive index according to the direction of the transmitted light.
Synonym(s): birefringence

birefringence

/bi·re·frin·gence/ (bi″-re-frin´jens) the quality of transmitting light unequally in different directions.birefrin´gent

birefringence

An optical property of materials in which the refractive index differs for light polarised in 1 plane compared to the normal (orthogonal) plane. Crossed Nicoll prisms cause birefringent material to appear bright against a dark background.

Birefringence types 
Form birefringence—due to differences in molecular organisation of a material.

Stress birefringence—due to tension-related differences in molecular alignment.
 
Flow birefringence—due to differences in alignment of rod-like particles in fluids.

dou·ble re·frac·tion

(dŭb'ĕl rĕ-frak'shŭn)
The property of having more than one refractive index according to the direction of the transmitted light.
Synonym(s): birefringence.

birefringence

Splitting of light into two separate beams.

birefringence 

Property of anisotropic media such as crystals, whereby an incident light beam is split up into two beams, each plane polarized at right angles to the other. One beam, called ordinary, obeys Snell's law, while the other, called extraordinary, does not. Syn. double refraction. See anisotropic; law of refraction; Nicol prism; Wollaston prism.

birefringence

the quality of transmitting light unequally in different directions.
References in periodicals archive ?
Windows are made from a special optical flat tempered glass that did not develop any thermal birefringence thus all the birefringences being measured is coming from the sample alone.
Without a compensator, a specimen with birefringence as low as that of the mitotic spindle in a living cell would not generate enough image brightness and contrast to successfully expose a film.
Because it has no birefringence, AZP enables clearer images and more efficient utilization of light.
The bright birefringence of each material in polarized light, however, can cause confusion.
Thin layers of this material, typically 100 nm, readily enable definition of single-mode channels, which have very high surface sensitivity and very large modal birefringence, factors that make these wave-guides extremely attractive for optical sensing applications.
Approximately 20% of starch granules of HT- and VHT-dried pasta samples either partially or completely lost their birefringence.
This new fiber combines superior polarization maintaining properties, low attenuation and excellent birefringence with a polyester-elastomer coating.
Normally, calcite has the optical property known as birefringence, in which light travels two pathways to produce a double image.
Characteristics of this innovative acrylic compound include: low birefringence ([less than]20 nanometers), 92 percent light transmittance, high surface hardness, precise mold surface reproduction of small pits and high elastic modulus resulting in unchanged planarity during rotation.
This novel process creates a spunbonded nonwoven composed of subdenier filaments with high birefringence and that can be produced at a much lower cost than existing technology.
In addition, low birefringence eliminates the rainbow effect some plastics experience with polarized light, giving the material some potential advantage in electronic device screens and retail displays.