Color triangle Color triangle A colour triangle is an arrangement of colours within a triangle, based on the additive combination of three primary colors at its corners. An additive colour space defined by three primary colors has a chromaticity gamut that is a color triangle, when the amounts of the primaries are constrained to be nonnegative. Before the theory of additive color was proposed by Thomas Young and further developed by James Clerk Maxwell and Hermann von Helmholtz, triangles were also used to organize colors, for example around a system of red, yellow, and blue primary colors. After the development of the
Robert Lauder of the Bass have feus of certain properties from Sir Robert. Certainly Popill, and Newhall [Lothians], were owned by the lairds of Bass. What is also clear is that the Robert Lauder at Lauder Tower, Berwickshire, is not the son and heir of Sir Robert Lauder of the Bass, but a separate entity. A Letter of Licence was given to Robert Lawder of Bass, knight, to [give?] 'analy' [annually?] four merks worth of land of aul [old] extent of his lands of Ladypart, lying in the bailiary of Lawderdale, sheriffdom of Berwick, to what person or persons he pleases. Dated at Edinburgh 27