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
We know that the primary colors are red, yellow and blue, and that the combination of any two of these gives a secondary color. The eye perceives neither color, but orange,--the secondary color. secondary color. A color produced by mixing two additive primary colors in equal proportions. The secondary colors are cyan (a mixture of blue and green), magenta (a mixture of blue and red), and yellow (a mixture of green and red). Each secondary color is also the complementary color (or complement) of the primary color whose wavelength it does not contain. Thus cyan is the complement of red, magenta is the complement of green, and yellow is the complement of blue.