who introduced the color wheel to represent the organization of color
Color wheel The original color circle of Isaac Newton showed only the spectral hues and was provided to illustrate a rule for the color of mixtures of lights, that these could be approximately predicted from the center of gravity of the numbers of "rays" of each spectral color present (represented in his diagram by small circles).[7] The divisions of Newton's circle are of unequal size, being based on the intervals of a Dorian musical scale.[8] Most later color circles include the purples, however, between red and violet, and have equal-sized hue divisions.[9] Color scientists and psychologists often use the additive primaries, red, green and blue; and often refer to their arrangement around a circle as a color circle as opposed to a color wheel.[10]
Sir Gawain and the Green Knight Given the varied and even contradictory interpretations of the color green, its precise meaning in the poem remains ambiguous. In English folklore and literature, green was traditionally used to symbolise nature and its associated attributes: fertility and rebirth. Stories of the medieval period also used it to allude to love and the base desires of man.[33][34] Because of its connection with faeries and spirits in early English folklore, green also signified witchcraft, devilry and evil. It can also represent decay and toxicity.[35] When combined with gold, as with the Green Knight and the girdle, green was often seen as representing youth's passing.[36] In Celtic mythology, green was associated with misfortune and death, and therefore avoided in clothing.[37] The green girdle, originally worn for protection, became a symbol of shame and cowardice; it is finally adopted as a symbol of honour by the knights of Camelot, signifying a transformation from good to evil and back again; this displays both the spoiling and regenerative connotations of the color green.[37]