Introduction to Colors
Do we always really see what we see? If we can determine the roughness of the surface by eye, then may be we can find out its color by touch? Sounds confusing, isn’t it? These and many other questions were on people’s mind for centuries. The interest to color perception by a human eye is not an exception. First of all let’s try to find the best definition of color.
In fact, you can find plenty, and here is one of them: “Light, being caught by the eye, is transformed into the signals of the neurons located there, and is then sent out to the brain, using the optical nerve as a transmitter”. Brrr… Too scientific, I would say. May be this one is better? “Color is a visual attribute of things that results from the light they emit or transmit or reflect”. Here is my favorite from Wikipedia (en.wikipedia.org/wiki/Color): “Color (American English) or color (Commonwealth English) is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analysis of a view. The perception of color is influenced by long-term history (nurture) of the observer and also by short-term effects such as the colors nearby. The term color is also used for the property of objects or light sources that can be distinguished by differences in the receptors of the eye”. All these definitions are correct, and, In fact, all of them have one point in common -color is light. Human eye can react to three primary colors – red, green and blue (RGB). The brain recognizes any color tone as a combination of these three primary ones.
The dictionary of any language contains a large number of color names (usually from 100 to 150). In reality, a human eye can distinguish