dispersion

Examples of dispersion in the following topics:

• Dispersion: Rainbows and Prisims

  • Dispersion is defined as the spreading of white light into its full spectrum of wavelengths.
  • Dispersion is defined as the spreading of white light into its full spectrum of wavelengths.
  • Refraction is responsible for dispersion in rainbows and many other situations.
  • (b) White light is dispersed by the prism (shown exaggerated).
  • This light is refracted and dispersed both as it enters and as it leaves the drop.

• Dispersion of the Visible Spectrum

  • Dispersion is the spreading of white light into its full spectrum of wavelengths.
  • When a light ray enters a medium with a different index of refraction, the light is dispersed, as shown in with a prism.
  • In water, the refractive index varies with wavelength, so the light is dispersed.
  • (b) White light is dispersed by the prism (shown exaggerated).
  • This light is refracted and dispersed both as it enters and as it leaves the drop.

• Energy in a Magnetic Field

  • For non-dispersive materials this same energy is released when the magnetic field is destroyed.
  • For linear, non-dispersive, materials (such that B = μH where μ, called the permeability, is frequency-independent), the energy density is:
  • For linear non-dispersive materials, though, the general equation leads directly to the simpler energy density equation given above.

• Combinations of Lenses

  • The most common type of achromat is the achromatic doublet, which is composed of two individual lenses made from glasses with different amounts of dispersion Typically, one element is a negative (concave) element made out of flint, which has relatively high dispersion, and the other is a positive (convex) element made of crown glass, which has lower dispersion.

• Enhancement of Microscopy

  • Dispersion staining: This results in a colored image of a colorless object; it does not actually require that the object be stained.

• The Spectrometer

  • This grating then disperses the emitted light to anther mirror which spreads the different resultant wavelengths and reflects them onto a detector which records the findings.

• Dieletrics and their Breakdown

  • Current is dispersed in many different directions, creating different stems.

• What is Power?

  • The remainder becomes a huge amount of thermal energy that must be dispersed as heat transfer, as rapidly as it is created.

• Diffraction Gratings: X-Ray, Grating, Reflection

  • The directions of these beams depend on the spacing of the grating and the wavelength of the light so that the grating acts as the dispersive element.

• More on coupled spring/mass lattices

  • The dispersion seen in the right side simulation is the result of the discreteness of the medium: waves whose wavelengths are comparable to the grid spacing sense the granularity of the medium and therefore propagate at a slightly different speed than longer wavelength disturbances.
  • The lower frequency modes are purely sinusoidal; the higher frequency modes become modulated sinusoids as a result of the dispersive effects of this being a discrete system.