Dispersion (optics)
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Dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency. Sometimes the term chromatic dispersion is used to refer to optics specifically, as opposed to wave propaga
A compact fluorescent lamp seen through an Amici prism
Rainbow
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A rainbow is an optical phenomenon caused by refraction, internal reflection and dispersion of light in water droplets resulting in a continuous spectrum of light appearing in the sky. The rainbow tak
Dispersion (optics)
…in a cable) can produce signal distortion which further aggravates inconsistent transit time as observed across signal bandwidth. Dispersion causes a rainbow's spatial separation of a white light into components of different wavelengths (different colors). However, dispersion also has an effect in many other…
Double rainbow and supernumerary rainbows on the inside of the primary arc. The shadow of the photographer's head at the bottom of the photograph marks the centre of the rainbow circle (the antisolar point).
Rainbow in Moshav Aviel, Israel
A colourful rainbow and ring-billed gull
Definition on angles