Dispersion

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Related to birefringent: refractive index, Birefringent filter

Dispersion

In statistics, the placement of data points along a chart relative to an average or mean line. Dispersion is important to finance as the data points of say, a stock, determine the mean, which in turn helps determines the stock's trend. Dispersion is also used to determine volatility: data points all over the chart indicate that a stock has wild fluctuation in price.
References in periodicals archive ?
Archival, formalin-fixed, paraffin-embedded lung or pleural tissue specimens that contained various birefringent crystals were retrieved from departmental autopsy and surgical pathology files.
Based on this sample power, an analysis was done to score for changes within each of these three generations of respiratory bronchioles from each case for the following histologic features: smooth muscle hypertrophy, fibrosis, alveolar macrophage frequency, degree of inflammatory change within the interstitial wall, amount of carbonaceous pigment within each respiratory bronchiole generation, and the amount of birefringent dust particles within each of these generations.
2) Injection speed and, to a lesser extent, melt temperature, were significant in producing birefringent shear zones in the surface of the TPO.
A polarizing lens is useful in this situation, since talc and microcrystalline cellulose (but not crospovidone) are strongly birefringent (Figure 8, D [inset]) and stand out at low magnification.
JDSU's use of liquid crystal polymer and form birefringent dielectric thin films delivers a high degree of customization and a large-area format while achieving superior optical flatness.
A significant delay in deliveries of birefringent materials against
CASIX's crystal products include laser crystals, nonlinear crystals, birefringent crystals, and diode pumped microchip (DPM) crystal assemblies for commercial laser systems, instrument systems, and diode pumped solid state (DPSS) laser module applications.
PDLCs, which in their common form, consist of micrometer-sized, birefringent LC droplets dispersed in an optically transparent and uniform polymer film (6), represent an important new class of materials for such optical device application (7), (8).
Congo red-stained slides must be examined under polarized light and only the presence of apple-green birefringent deposits is considered diagnostic of amyloid.
They are made from birefringent crystals such as quartz, calcite, lithium niobate, and yttrium vanadate, and by combining glass substrates and optical thin films.
CASIX's a-BBO crystals have a large birefringent coefficient and wide transmission window range from 189 nanometers to 3500 nanometers.
Their work conducted on maleated polyethylene (MAPE)/organoclay extrudates showed a distinct athermal birefringent pattern for the samples at temperatures substantially greater than the MAPE melting temperature.