The Cotton Gin. Eli Whitney and the Need for an Invention. As Eli Whitney left New England and headed South in 1792, he had no idea that within the next seven months he would invent a machine that would profoundly alter the course of American history.A recent graduate of Yale, Whitney had given some thought to becoming a lawyer.li Whitney and the Need for an Invention. As Eli Whitney left New England and headed South in 1792, he had no idea that within the next seven months he would invent a machine that would profoundly alter the course of American history. A recent graduate of Yale, Whitney had given some thought to becoming a lawyer.
red and green combine to make yellow green and blue make cyan blue and red make magenta the combination of red green and blue in full intensity makes white white light is created when all colors of the em spectrum converge in full intensity
So, Yellow is white minus blue, magenta is white minus green and cyan is white minus red. Yes, yellow is a primary color, as are red and blue. <br /><br /><br /><br /><br /> Umm... <br /><br /> Printing: yellow, cyan, magenta, plus black to make solid blacks. <br /><br /> Televison: red, green blue. In printing we use colors that are made of two primary colors so as to have a color that excludes one primary color.