Define Spectrum,Dispersion and Persistence
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Dispersion is defined as the spreading of white light into its full spectrum of wavelengths. More technically, dispersion occurs whenever there is a process that changes the direction of light in a manner that depends on wavelength.
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Dispersion: The phenomenon of splitting of white light into its constituent colours is called dispersion. Persistence of vision: The phenomenon of the eye where an afterimage is retained, but only for a short period of time, after the removal of the object.
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