Diagrams......................

Today's episode (of excerpts from 100 Diagrams That Changed the World) brings us The Color Wheel of  Moses Harris.  Harris, concluding that Issac Newton had it wrong when he proposed seven primary colors in 1704, published his theory, The Natural System of Colour, in 1766.  Harris proposed three primary colors (Red, Yellow, Blue).  His handy Prismatic diagram made it easy for all to understand.