![Created image of a human eye with a rainbow iris.](http://static.sciencelearn.org.nz/images/images/000/003/442/full/UV_ITV_ElectromagneticSpectrum_VisibleLight.jpeg?1674170836)
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