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Rights: Delcreations, 123RF Ltd Published 7 March 2018 Size: 110 KB Referencing Hub media

Visible light waves are the only electromagnetic waves we can see. We see these waves as the colours of the rainbow. Each colour has a different wavelength. Red has the longest wavelength, and violet has the shortest wavelength. When all the waves are seen together, they make white light.

Image acknowledgement : Delcreations, 123RF Ltd