Biological color. Color has a psychological and physiological response on the human body and any biological organism. lightweights have a specific frequency or set of frequencies impinging upon the eye or surface of organic material will react differently. Since this course is specifically focusing on design, we will be focusing on our current understanding of the human eyes response to colors. This then means that we should focus on your understanding of the biological or the biology of the eye. Light that enters the eye through the pupil, which dilates according to the amount of accessible light and light or two passes through the pupil and strikes the inside surface of the eye is known as the retina The retina is lined with a variety of light sensing cells known as rods and cones.

Both serve a function in our understanding of perceived light. The rods on the retina are sensitive to the intensity of light, but they cannot distinguish between the wavelengths of light cones other color sensing biological cells of the retina. When light of a given wavelength enters the eye, and strikes the cones of the retina, a chemical reaction is activated, that results in an electrical impulse being sent along the nervous system to the brain. This is the same principle why which most organisms on the planet perceive life. However, there are some insects which may be able to see the ultraviolet and infrared Waves of light. However, we won't be discussing the science behind color in the natural environment.

Our current understanding of light is that there are three kinds of cones, each sensitive to its own range of wavelengths within the visible light spectrum. These three kinds of cones are referred to as red cones, green cones, and blue cones, because of their respective sensitivity to the wavelengths of light, that are associated with red, green, and blue, unlike the primary colors of red, yellow, and blue, since the red cone is sensitive to a range of wavelengths, it is not only activated by wavelengths of red light, but also by wavelengths of orange light, yellow light and even green light. The same manner the green cone is most sensitive to wavelength, so Lot associated with the color green. Yet the green cone can also pick up and be activated by wavelengths of light associated with the colors of yellow and blue. This is proposed as an evolution of the human genome.

However, this cannot be proven no disproven and it's purely theoretical at this stage.