There are two ways to synthesize colors: additive and subtractive. The first of them is used if the color is synthesized by sending three multi-colored light sources, the brightness of which can be changed, to the same screen, and the second - when layers of transparent dyes applied on top of each other are used for color synthesis.
It is necessary
- Three dimmable light sources: red, green and blue;
- Three markers: blue-green, yellow and purple;
- White sheet of paper.
Instructions
Step 1
In order to synthesize color additively, you need three dimmable light sources: red, green, and blue. If you are going to synthesize only saturated colors, you can also use sources that can only be turned on and off without adjusting the brightness. But with adjustable sources, you can get many more different shades.
Step 2
Direct all three sources to the common screen. To avoid color distortion, this screen must be white. With unregulated sources, you can get eight colors. When all three sources are turned off, the color is black. If you turn on the red, green and blue sources separately, you get red, green and blue colors, respectively. A red source combined with blue will produce magenta, red and green will produce yellow, and green and blue will produce blue-green. Finally, all three sources, when included together, will make it possible to synthesize a color close to white. If the sources are adjustable, smoothly varying the brightness of each of them, you can get an almost infinite number of intermediate colors. This is how colors are synthesized in video cameras, televisions and monitors.
Step 3
For subtractive color synthesis, take a white sheet of paper and three markers: blue-green, yellow, and magenta. With their help, you can also synthesize eight different colors. The unapplied area of the paper will remain white. Areas that are individually shaded with blue-green, yellow, and magenta pens will have the corresponding colors. An area filled with blue-green and yellow markers at the same time will turn out to be green, yellow and purple - red, and blue-green and purple - blue. If you paint over an area of the sheet with all three markers at the same time, you get a color close to black. This method of color synthesis is used in film photography, printing, and also in color inkjet printers.
