dispersion


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dispersion

 [dis-per´zhun]
1. the act of scattering or separating; the condition of being scattered.
2. the incorporation of the particles of one substance into the body of another, comprising solutions, suspensions, and colloid systems.
3. a colloid system, particularly an unstable one.

dis·per·sion

(dis-pĕr'zhŭn),
1. The act of dispersing or of being dispersed. Synonym(s): dispersal
2. Incorporation of the particles of one substance into the mass of another, including solutions, suspensions, and colloidal dispersions (solutions).
3. Specifically, what is usually called a colloidal solution.
4. The extent or degree in which values of a statistical frequency distribution are scattered about a mean or median value.
[L. dispersio]

dis·per·sion

(dis-pĕr'zhŭn)
1. The act of dispersing or of being dispersed.
2. Incorporation of the particles of one substance into the mass of another, including solutions, suspensions, and colloidal dispersions (solutions).
3. Specifically, what is usually called a colloidal solution
4. The extent or degree to which values of a statistical frequency distribution are scattered about a mean or median value.
[L. dispersio]

dispersion

the distribution of individual organisms once any DISPERSAL has taken place. For example, organisms may be randomly dispersed, under-dispersed (aggregated) or over-dispersed (as in territorial animals). Dispersion should not be confused with DISTRIBUTION which normally refers to a species as a whole and not to individuals.

dispersion

Phenomenon of the change in velocity of propagation of radiation in a medium, as a function of its frequency, which causes a separation of the monochromatic components of a complex radiation. All optical media cause dispersion by virtue of their variation of refractive index with wavelengths. Dispersion is specified by the difference in the refractive index of the medium for two wavelengths. The difference between the blue F (486.1 nm) and the red C (656.3 nm) spectral lines is called the mean dispersion, i.e. nFnC. Dispersion is usually represented by its dispersive power ω or relative dispersion which is equal to the mean dispersion divided by the excess refractive index of the helium d (587.6 nm) spectral line (nd − 1), often called the refractivity of the material,
ω = nFnC/nd − 1
The reciprocal of the dispersive power is called the Abbé's number or constringence (Fig. D8). See aberration longitudinal chromatic; achromatic axis; Fraunhoffer's lines; achromatic prism.
Fig. D8 Dispersion of a white beam of light by a prismenlarge picture
Fig. D8 Dispersion of a white beam of light by a prism

dis·per·sion

(dis-pĕr'zhŭn)
1. Dispersing or being dispersed.
2. Incorporation of the particles of one substance into the mass of another, including solutions, suspensions, and colloidal dispersions (solutions).
3. Specifically, what is usually called a colloidal solution
[L. dispersio]
References in periodicals archive ?
"Over the last few years, our strategic planning has driven us to work more closely with print machine manufacturers (OEMS), enabling them to develop bespoke ink products," shares Andrew Grantham, marketing manager, Diamond Dispersions. "The closer relationships we've built have been a key driver to our sales growth over the last three years."
A: original PET film; B: PET film precoated with PG003 dispersion and a polyurethane binder; C: timed finger smear test on cyan color printed on the precoated PET.
QT dispersion analysis was carried out by selecting a view of all the 12 leads of ECG from 24 hours Holter monitoring which was devoid of artifacts.
The graphite oxide is layered structured material which in water yields dispersion that are mostly single layered sheets known's as graphite oxide sheets [8].
Dispersion parameters as well as the modal field were calculated by using CUDOS MOF Utilities [21] that simulate PCF with multipole method [22, 23].
Expanding the ranges to the top and bottom 5% of managers increases the dispersion to roughly 7% per year (over the same five-year period) for traditional large-cap growth and intermediate term bond funds.
The module is available with any dispersion value from -10 to -2100 ps/nm at 1550 wavelengths.
In this paper we present a segmented core dispersion flattened fiber which is capable to be designed as (i) small positive-non-zero dispersion flattened fiber, (ii) small negative-non-zero dispersion flattened fiber, and (iii) near-zero dispersion flattened fiber.
Larger aperture telescopes are affected more than smaller ones because of their better resolving power, so the effect of dispersion becomes significant at a higher object altitude.
Similarly as in the case of a liquid dispersion, the ageing of the original dispersion also manifests itself in the properties of hardened films.
All the parameters controlling dry powder measurement sample feed rate, dispersion and system cleaning - are fully controlled through the software via the system manager interface.
Modal dispersion can be observed in multimode optical fibers, where multiple modes of the same signal pulse propagate at different velocities along the optical fiber and cause pulse broadening.