Thursday, March 11, 2010

COLOURS



COLOURS

All colours, as we see them, form the visible spectrum of light, and they come from the WHITE light.This can be seen by passing sunlight through a prism.
Our eyes have ‘Rods’ and ‘Cones’ that work together to give us the complete perception of light. There are about 120 million rods and about 6 to 7 million cones, in the human eye. Rods are more sensitive than the cones but they are not sensitive to colour. Cones can detect three of the visible colours - red - blue and green. People who suffer colour blindness have less numbers of particular cones than normal, so they get colours confused.

The primary colours are red blue and yellow. Primary colours cannot be made from other colours. Artists create all the other colours of the rainbow by mixing together the primary colours. The secondary colours are green orange and violet. Secondary colours are made by mixing two primary colours. Each secondary colour is made from the two primary colours closest to it on the colour wheel
When placed next to each other, complementary colours tend to look balanced and are colours opposite to each other on the colour wheel.


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