What are the three colors of light? Who knows? Please do me a favor.

Three primary colors of light (three primary colors: magenta, yellow and cyan)

One is the three primary colors of light, that is, RGB (red, green and blue). We are in class now, talking about the three primary colors of photography. In addition, the phosphor of the TV we watch is also in this combination. Just look at the CRT in front of the color TV, not the computer monitor in front. Its pixels are too small to be distinguished by the naked eye. The combination of these three colors, RGB, forms almost all colors.

The light will be brighter and brighter, and the brighter intermediate colors can be obtained by mixing in pairs: yellow yellow, cyan, magenta (or magenta, magenta). Three equal combinations can get white.

Complementary color means that there are no other colors at all, and red and green are mixed into yellow. Because there is no blue at all, yellow is the complementary color of blue. Two equal complementary colors are mixed into white. Red and green are mixed into yellow according to a certain proportion. So yellow can't be called three primary colors.

The second primary color is the printing primary color.

The color we see in printing is actually the light reflected by the paper we see. For example, this combination is used to adjust colors when painting. Pigment absorbs light, not the superposition of light, so the three primary colors of pigment can absorb RGB colors, namely cyan, magenta and yellow (CMY), which are the complementary colors of RGB.

The yellow pigment and cyan pigment are mixed. Because the yellow pigment absorbs blue light and the cyan pigment absorbs red light, it only reflects green light, which is why the yellow pigment and cyan pigment form green.

Color TV and the three primary colors of light

Color TV screens are coated with three different phosphors. The electron beam is big on it, one can emit red light, one can emit green light and the other can emit blue light. When making the fluorescent screen, the workers used the book method to arrange the three phosphors alternately on the fluorescent screen bit by bit. No matter where you take out three adjacent dots on the screen, you must include a red, green and blue dot. Each point is only the size of a needle tip, so it can't be seen without a magnifying glass. Because they are so small and close together, when they shine, the naked eye can't distinguish the light emitted by each color point, only the mixed colors of three kinds of light.

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/kloc-Issac Newton, a great scientist in the 0/8th century, discovered the famous three laws of mechanics, which not only made outstanding achievements in mechanics, but also left a valuable wealth for future generations who like photography, that is, the optical color theory. He laid the scientific foundation of modern color research.

Like being hit in the head by an apple, Newton discovered the mystery of the color of light. After systematic observation and research experiments, he finally confirmed that when a beam of white light passes through a prism, it will be refracted twice, and the result is that the white light is decomposed into seven regular colored rays. These seven colors are red, orange, yellow, green, blue, indigo and purple in order. This is what people often call "seven-color light". And these seven kinds of light will be combined into a beam of white light after being reversely refracted by the prism. So, 1666, Newton published a theory-"color is in light". Newton's prism experiment was later called the famous "dispersion experiment" This research achievement is also the "spectral theory" that Goethe, a great German writer, has been strongly refuting for decades after Newton.

After discovering the mystery of light dispersion, Newton began to infer that since white light can be decomposed and synthesized, can these seven colors of light also be decomposed and synthesized? As a result, countless experiments and constant calculations filled his later life. After a while, Newton came to a conclusion through calculation: of the seven colors, only red, green and blue can't be decomposed, so there is no synthesis. The other four colors of light can be composed of these three colors of light in different proportions. So red, green and blue are called "three primary colors of light" or "three primary colors of light" (note that this is different from the well-known three primary colors "magenta Huang Qing"). Newton failed to complete the experiment and died after reaching the above conclusion through calculation. Some days after Newton's death, his students finally finished his unfinished experiments, and Newton's calculations before his death officially unveiled the color theory of light.

Experiments prove that:

1, red, green and blue can't be decomposed, so it is called "tricolor light".

2. Equal amounts of three primary colors add up to white light, that is, white light contains equal amounts of red light, blue light and green light.

3. As shown in the figure, if any two of the three primary colors are added in equal amounts, they will become the complementary colors of the other of the three primary colors. Namely: equal amount of red light+green light = yellow light, which is complementary to blue light; Equal amount of red light+blue light = magenta light (also called magenta, that is, light purple), which is complementary to green light; Equal amount of green light+blue light = green light, which is complementary to red light. If one of the three primary colors is equal to other colors to form white light, these two colors are called complementary colors. Complementary colors can block each other. So we can know three pairs of complementary colors: yellow and blue, red and cyan, green and magenta.

4. The complementary light of the three primary colors "red, green and blue" is called "three primary colors".

Theorem:

The three primary colors of pigment and light are different!

Transparent body's color is determined by its own color light, but transparent body's color is determined by his reflected color light.