I always wondered why the colors RGB are used as the primary pixel values, rather than RYB (as we learned in elementary school). From Googling, I learned that mixing paint is a subtractive process, in which each color added results in more light being absorbed by the resultant paint. This is different from mixing actual light, in which combining R, G, and B results in a white light, and is thus an additive process.
On a side note, I learned that R, Y, and B are not actually the true primary colors of paint, since they can not be combined to create every color; rather, cyan, magenta, and yellow are. With these 3 colors, plus white and black, you can create almost every paint color. Printers use these "true" primary colors in their color cartridges.
I always wondered why the colors RGB are used as the primary pixel values, rather than RYB (as we learned in elementary school). From Googling, I learned that mixing paint is a subtractive process, in which each color added results in more light being absorbed by the resultant paint. This is different from mixing actual light, in which combining R, G, and B results in a white light, and is thus an additive process.
On a side note, I learned that R, Y, and B are not actually the true primary colors of paint, since they can not be combined to create every color; rather, cyan, magenta, and yellow are. With these 3 colors, plus white and black, you can create almost every paint color. Printers use these "true" primary colors in their color cartridges.
Reference: https://www.quora.com/Why-do-computers-use-RGB-instead-of-RBY