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    • Diagram of rainbow formed when light enters a water droplet.
    Rights: Public domain Published 14 March 2012 Size: 25 KB Referencing Hub media

    A rainbow is formed when light enters each water droplet, and the different colours bend (refract) at slightly different angles. They reflect off the inside of the drop before refracting again as they leave. The shorter wavelengths refract more.

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      Refraction of light

      Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for ...

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