Color Essays -- essays research papers

      contort is sensed when white light bounces off an object and is reflected into the gist. Objects appear distinct saturations depending on what emblazons were absorbed and which were reflected. Color is "seen" by the rods and cones in the eye. Cones detect color and rods detect black, white, and shades of gray. People who cannot see colors properly are colorblind. There are many different kinds of colors and they are classified in many different ways (The World Book Encyclopedia p 818, 819).           The eye consists of many departments. The part of the eye you can see when you look at someone consists of four parts. The colored part of the eye where the light enters is called the iris. The white part around the iris is the conjunctiva and episclera. This part also contains blood vessels. The cornea is the clear covering of the iris and pupil. The cornea contains no blood vessels. The lens is located behin d the iris. The lens is used to focus, as in the cornea, moreover the lens can move. The retina is responsible for vocalizing the judgment what a person is seeing. They determine all the different parts of what is being seen. It then codes them to electrical signals for the brain (Cassel p 4-10).           Rods and cones are in the retina. There are three kinds of cones. Each cone can sense a different color. Rods are used when a person is in dim light (Hubel p 162). The optic nerve is what sends all these messages to the brain (Cassel p 261).           Sometimes people have difficulty telling colors apart. This is called colorblindness (Websters Dictionary, p 281). Sometimes colorblindness is hereditary. Other times there is a problem with the message reception from the optic nerve. Another problem can pillow in the retina. People can have trouble recognizing colors because of certain drugs.  &n bsp        People are diagnosed as being colorblind by taking tests. They look at different colored numbers that are in order by their color. This way they can be diagnosed as being colorblind in certain areas (Cassel p 52). A person can have different extents of colorblindness depending on what the problem is. A person can be colorblind because t... ...ht or white the colors forget appear reversed. Red becomes green, and yellow becomes blue (The World Book Encyclopedia p 820, 819). A quote about afterimages was addicted by Johannes Ilten "It has been psychologically turn up that the afterimage as well as the simultaneous effect show the strange and so far inexplicable fact that our eye demands for a given color its complementary completing and produces it on its own if it is not provided" (Tritten p C43).      Color is a product of many different things. We physically see color by the light hitting the retina and being absorbed by the rods and cones. Colors are distinguished by sorting them into categories. These could include tint, shade, tone, chroma, value, or hue. It could also be determined by whether a color is primary, secondary, intermediate, or complementary. The illusion of different colors can be created by the colors around a color or placing bits of color very close together as in a television. Afterimages create the opposite of colors. All color is a product of light. Without light, we would exclusively be able to see in black and white (The World Book Encyclopedia p 818, 819, 822, 823).