This week's theme: The Colour Spectrum

Colour is light. What colour we see depends on what light waves are reflected back from a surface. Pure light can be refracted into individual wavelengths. We perceive each of these wavelengths as a spectral colour. While in reality, these colours are part of a gradation, we break them down into six colours; violet, blue, green, yellow, orange and red. These are the colours of the spectrum. These are the colours of the rainbow.

This week EBSQ's Art Of The Day brings you examples of these waves of light and one example of black - the colour that does not emit or reflect light.