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 ?
Figure 8 shows the predicted gapwise distribution of the flow birefringence at the various radial positions at the end of the packing (a) and cooling (b) stages for ICM PS disk in run 2.
The method proposed for the rotatory birefringence determination (validated for Carpathian Quartz) is applied now to the study of the polymer HPC solutions with different concentrations in water.
Described as an excellent candidate for CD and DVD applications as well as advanced recordable/rewriteable formats, OQ1050 is said to offer increased flow for low birefringence and fast cycles.
A calibrated scale on the compensator supplies a quantitative reading of retardation, which can then be used as a gauge of the stress value or can be converted into units of birefringence or stress (MPa or psi) by means of a simple equation.
Although many studies were devoted to modeling of the CIM, however, with exception of study by Palluch and Isayev [20], these studies, have not considered the viscoelastic effects leading to the residual stress and birefringence development.
PMMA, PTFEMA, PPhMA, and PPFPhMA showed four types of birefringence properties, even though they were all methacrylates and their molecular structures only differed in terms of the substituent R in the side chains, as shown in Fig.
The detecting principal is a form of birefringence of the wafer.
Apple-green birefringence under polarization after staining with Congo red is diagnostic (figure 2).
Described as "crystal clear," the new polycarbonate (PC) film is said to be an excellent substrate material for data-storage layers, exhibiting low birefringence and high heat deflection temperatures under load.
Scientists at NIST have determined that calcium fluoride, one of the principal materials used for optics in the ultraviolet spectral region, exhibits an unexpected, intrinsic birefringence in the deep ultraviolet.
42) True stress, true strain and birefringence development of orientation in rubbers during uniaxial stretching as detected by spectral birefringence technique: II.