The variety of colors is endless and colorful, but there is a certain internal relationship between various colors, and the paint color is also. In addition to the special functions of anti-corrosion, anti mildew, conductive and noise reduction, the most important function of paint is to decorate the home with colorful life atmosphere. However, because each color has its own characteristics, it has different effects on people's vision, psychology, physiology and so on. Let's understand the basic knowledge of paint color and how to color.
Basic knowledge of different kinds of substances about color
1. The color of an object
Achromatic objects refer to black, white and gray objects, which have the characteristics of non selective absorption of illumination light, that is, when the light hits the achromatic objects, the color light of various wavelengths in the absorbed incident light is equal; the spectral composition of the reflected or transmitted light is the same as that of the incident light. When the white light shines on the achromatic object, the reflection rate is above the first 75%, which is white; the reflection rate is below 10%, which is black; the reflection rate is between the two, which is gray with different shades.
2. The color of a colored object
Colored objects have the characteristic of selective absorption of illumination light, that is, when the light hits the colored objects, the colored light of various wavelengths absorbed in the incident light is unequal, some are absorbed more, some are absorbed less. When white light shines on a colored object, the reflected or transmitted light is not only weaker than the incident light, but also changes the spectral composition, so it presents various colors.
3. The influence of spectral composition of light source on the color of object
When the colored light hits the achromatic object, the color of the reflected light is the same as that of the incident light. When more than two kinds of colored light irradiate the achromatic object at the same time, the color of the object appears additive effect. If the red light and the green light illuminate the white object at the same time, the object will be yellow.
When there is colored light shining on the colored object, the color of the object shows the effect of subtraction. In any case, if the Yellow object is red under the magenta light, green under the cyan light, and gray or black under the blue light.
4. The relationship between color and light
Non self luminous colour: the colour produced by the illumination of an object, such as the colour ticket, paint, fabric, etc.