The human eye is able to distinguish electromagnetic radiation in a wide range. By an interesting coincidence, he sees only waves of a certain length, and he calls them colors. Colors are different, but a person cannot look beyond the infrared and ultraviolet ranges. However, what he has is enough for him to compose an almost complete picture of the world.
Once upon a time in 17th century England there was a very curious scientist, mathematician, astronomer, writer, chemist, physicist, philosopher - Isaac Newton. And he once set up an experiment with a prism through which ordinary sunlight passed. Imagine the surprise of the natural scientist when he saw instead of the usual white light - a real rainbow. And then, in the course of further experiments, other scientists realized that in fact there are only three primary colors in nature.
Every hunter wants to know …
Everyone is Red
Hunter - Orange
Desires - Yellow
Know - Green
Where - Blue
Sitting - Blue
Pheasant - Purple
In this well-known mnemonic proverb, all the primary colors of the spectrum are encrypted. Observant people have already noticed that there is no black and white here. But such borderline states in the spectrum are usually not considered, therefore they did not get into the proverb.
However, from all this diversity, scientists have identified only three primary colors - blue, red and yellow. And all other colors, tones, halftones and shades are obtained from mixing these three colors. As is well known, for example, to artists familiar with the palette and mastering the art of achieving the desired shade on canvas.
Man and colors
The human eye is able to perceive colors because there are three types of specific cones in the retina that work independently. They contain various pigments that respond to specific colors, red, green, and so on.
In fact, each cone reacts to all light waves (except for ultraviolet and infrared), but the pigment feels "its own color" better. Further, the received signals are transmitted to the brain, and it already analyzes the information received and gives us an understanding of a particular shade.
Interestingly, the primary colors cannot be called a property of the color itself; rather, they are due to the ability of the human eye to distinguish them. In addition, this is influenced by various technical systems that reproduce color.
From the point of view of psychophysiology, scientists believe that in fact there are four "pure" colors - red, green, yellow and blue. Among them, yellow and blue form one axis in color contrast, and red and green form another. However, there are people who cannot distinguish between primary colors or some individual shades. They are called color blind. Contrary to popular belief, they do not see the world as black and white photography, but simply cannot perceive specific colors well.
