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  • Diagram showing the refraction of light in water.
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 14 March 2012 Size: 86 KB Referencing Hub media

    When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it ‘bends’ more towards the normal line.

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