Human retinas grown in a dish explain how color vision develops

The National Science Foundation (NSF) is an independent federal agency that supports basic research and education in all fields of science and engineering. The 2018 fiscal year (FY) budget is $ 7.8 billion. NSF funds will reach all 50 states through grants to about 2,000 universities, universities and other agencies. Every year NSF receives more than 50,000 competitive investment proposals and receives approximately 12,000 new financial assistance.

Because humans have very complex visual abilities, they can perceive color and depth with complex details. Visual stimulation transitions occur in the retina. The photoreceptor cells found in this area have the special ability to convert light or the ability to convert light into electrical signals. There are two types of these photoreceptors. Rod which causes night vision (night vision), cone for clear vision (daytime visibility)

Human color vision depends on three photosensitive proteins present in our retina called opsin. Each kind of opsin absorbs one color of light in the spectrum. In humans, these opsins absorb the red, green, or blue color. The light of many wavelengths reflected by our eyes from the surface of the object around us intermix and provide a rich color. However, despite our extensive visual color, there is a wider range of organisms, cockroaches are classified as insects in this order (suborder: wilder; different feathers) slowly flying hornets (suborder: Zygoptera; double feathers). Cockroaches are characterized by large, multifaceted, or "false eyes" eyes, two pairs of rugged, transparent wings and thin bodies. Interestingly, even if they have six legs (like other insects) they can not walk.

Thirty thousand aspects are different views: big compound eyes in the sky | @ GrrlScientist

Color vision exists only in daylight or glare (bright vision), and there is no rod function at night or night vision (night vision). The human retina has about 7 million cones and 120 million rods. These two types of cells are not evenly distributed. The central retinal fovea around the fixed point is essentially a rodless, completely occupied by a cone. The maximum density of the rod is slightly offset from the fovea. The visible spectrum is composed of many wavelengths. Perceived hue or color is related to the wavelength of light. Short wavelength is blue or violet, medium wavelength is green and yellow, long wavelength is orange or red. The primary colors of light are red, green and blue. Mixtures of these colors create various wavelengths in various combinations and stimulate the cone to varying degrees. Normal color perception is three colors