The world is full of colour; but as a matter of fact the world is not coloured. Why is the sky blue? Why are sunsets red? Where do rainbows get their colours? What happens when light strikes a surface? Physics can help us to reveal the answers.
If we shine white light onto a green painted wall surface the shortest and longest wavelengths get absorbed by the wall while the ones in between are reflected. They’re the ones that come back to us and that’s why we say the wall is green.
But in the vast world of colour everyone relates to colours individually; nevertheless there is something universal, something we all share. We draw a physical, physiological and psychological bead on colour to find out just what colours is and what different colours means to us.
Colour has a huge impact on our lives. In The sense of colour, one of the four episode series The world of colour, a physicist, a psychologist and an eye doctor initiate us to the role and function of colours, to their psychological significance and effects and to the use of psychological tests.