The idea of a color circle, rather than a scale or bar, is often attributed to Isaac Newton. Source: From Isaac Newton, Opticks (London, 1704) Bk. 1, pt. 2, plate III, fig. 11.

From The creation of color in eighteenth-century Europe by Sarah Lowengard

Creator(s)
Subjects
  • European: 1400-1800
Citable Link
  • Color circle. The idea of a color circle, rather than a scale or bar, is often attributed to Isaac Newton. Source: From Isaac Newton, Opticks (London, 1704) Bk. 1, pt. 2, plate III, fig. 11.