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- The spectrum is produced because different colours of light travel at different speeds in glass. Red light is slowed down least by glass and is refracted least. Violet light is slowed down most by glass and is refracted most. As a result, the coloured light spreads out to form a spectrum of white light. This is called dispersion.
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When does dispersion occur?
What is dispersion in physics?
What is dispersion of light?
What is dispersion in wave motion?
What causes dispersion of light?
What are the consequences of dispersion in optics?
Explain the cause of dispersion in a prism; Describe the effects of dispersion in producing rainbows; Summarize the advantages and disadvantages of dispersion
Dispersion of light occurs when white light is separated into its different constituent colors because of refraction and Snell's law. White light only appears white because it is composed of every color on the visible spectrum.
Dispersion occurs whenever the speed of propagation depends on wavelength, thus separating and spreading out various wavelengths. Dispersion may require special circumstances and can result in spectacular displays such as in the production of a rainbow.
Dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency. [1] Sometimes the term chromatic dispersion is used for to refer to optics specifically, as opposed to wave propagation in general. A medium having this common property may be termed a dispersive medium.
dispersion, in wave motion, any phenomenon associated with the propagation of individual waves at velocities that depend on their wavelengths. Waves of any type can be described by a dispersion relation in which the wave frequency ω is given in terms of the wavenumber k, where k = 2π/λ, where λ is the wavelength.
The separation of visible light into its different colors is known as dispersion. It was mentioned in the Light and Color unit that each color is characteristic of a distinct wave frequency; and different frequencies of light waves will bend varying amounts upon passage through a prism.
