急！！！翻译！！！

The wavelength of the electromagnetic wave and intensity can have very big difference, in person can feel within range of wavelengths of (about 380 nano to 7.4 nano), it was called for visible light, and sometimes referred to simply as the light. If we will be a source of strength each wavelength stringing together, we can get the light source of the spectrum. An object's spectrum decide this object optical properties, including its color. Different spectrum can be received for the same color. Although we may put a color is defined as the sum of all these spectrum, but different animals see the colours are different, different people felt that color is also different, so this definition is pretty subjective. A dispersion reflecting all wavelengths of light surface is white and a absorb all the wavelengths of light of the surface is black. Color is light, then black is the perception of the perception, can say black light is not a real color. A rainbow has shown every color contains only a wavelength of light. We call this color for monochromatic. Rainbow spectrum is actually a continuous, but generally people will it is divided into seven colors: red, orange, yellow, green, blue, indigo, purple, but everyone's points method always stayed different. Monochromatic strength can also affect a person on a wavelength of light color feeling, such as dark orange be felt for brown, and dark yellow green be felt for olive, etc.