Dispersion

Dispersion may refer to:

Economics and finance

• Dispersion (finance), a measure for the statistical distribution of portfolio returns
• Price dispersion, a variation in prices across sellers of the same item
• Wage dispersion, the amount of variation in wages encountered in an economy
• Dispersed knowledge, notion that any one person is unable to perceive all economic forces

Science and mathematics

Mathematics

• Statistical dispersion, a quantifiable variation of measurements of differing members of a population
  • Index of dispersion, a normalized measure of the dispersion of a probability distribution
• Dispersion point, a point in a topological space the removal of which leaves the space highly disconnected

Physics

• The dependence of wave velocity on frequency or wavelength:
  • Dispersion (optics), for light waves
  • Dispersion (water waves), for water waves
  • Acoustic dispersion, for sound waves
  • Dispersion relation, the mathematical description of dispersion in a system
  • Modal dispersion, spreading of signals in multimode fibers and waveguides by a distortion mechanism
    • Polarization mode dispersion, a form of modal dispersion
  • Dielectric dispersion, the dependence of the permittivity of a dielectric material on the frequency of an applied electric field
  • Dispersion measure, the dispersion of radio signals from pulsars and fast radio bursts
• Dispersive mass transfer, in fluid dynamics, the spreading of mass from areas of high to low concentration
  • Atmospheric dispersion modeling, mathematical simulation of how air pollutants disperse in the ambient atmosphere
• London dispersion force, an instantaneous induced dipole-induced dipole
• Dispersed particle resistance, a measured parameter to characterize battery active materials

Other sciences

• Biological dispersal, the distribution of animals, spores, fruits and their seeds, etc.
• Dispersion (chemistry), a system in which particles are dispersed in a continuous phase of a different composition
• Dispersion (geology), a process whereby sodic soil disperses when exposed to water
• Dispersion (materials science), the fraction of atoms of a material exposed to the surface
• Dispersion polymerization, a polymerization process
• Velocity dispersion, the statistical variation of velocities about the mean velocity for a group of astronomical objects

Other uses

• Hellenistic Judaism § Hellenism, Jewish communities who lived amongst the gentiles in the first century CE
• Dispersion (album), the second album by High Rise
• Dispersion Technology, a scientific instrument manufacturer located in Bedford Hills, New York

See also

• All pages with titles beginning with dispersion
• All pages with titles beginning with dispersed
• Dispersal (disambiguation)
• Dispersive (disambiguation)
• Dispersity, a measure of the heterogeneity of sizes of molecules or particles in a mixture