The word pink was first used to describe colour in the 1600's to name the light red flowers in the dianthus family as 'pinks' a close relative of carnations. However, light red is not pink as pink has a bit less green in the colour mix, Nike Free Run 3 pink is a fake or more commonly called a combined colour incorporating two different wavelengths of light from the colour spectrum that the receptor cones in our eyes perceive as one colour.


The ability of our eyes to do this is based upon the retina having three types of colour receptor cells, or cones. The first type, Nike Free 3.0 relatively distinct from the other two, is most responsive to light that we perceive as violet. Cones of this type are called short-wavelength cones, S cones. The other two types are closely related genetically and chemically. One of Nike Free 5.0 called long-wavelength c