Why are rays of three colors used for color rendering on television: red, green and blue?

It’s all about the peculiarities of the human eye, in which there are three types of “color sensitive” cones, the first type is most sensitive to red, the second to green, and the third to blue. All the variety of colors we perceive is due to the ratio between the intensity of signals sent to the brain by these three types of cones.

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