The production of color

The range of visible light is about 400-800 nm. If the light with the wavelength of 400-800nm is mixed evenly according to the appropriate proportion, and then it hits the retina of the eye, it will produce a white light sense. But why does matter show different colors? The first to reveal the secret of color is English scientist Newton. He used a prism to refract the sunlight twice. For the first time, he successfully decomposed it into seven color bands: red, orange, yellow, green, blue, blue and purple.China Decorative Vacuum Coating Machine Suppliers

Newton not only decomposes the white light into the visible spectrum, but also tries to use the lens to gather the seven kinds of light and reduce them to the white light. His experiment reveals that the white light is a mixed light composed of many different colors, different wavelengths or different frequencies of colored light. Now we have clearly realized that color is just light of different wavelengths, shining on the retina of the human eye, and then giving the brain a feeling. We call this feeling color sense. In order to understand the visible spectrum and various colors in a step, we divide the visible spectrum into nine broad and easily distinguishable areas, which can be described by color rings.