Method of oil painting developed in the 1880s by the French neo-Impressionist Georges Seurat
. He used small dabs of pure colour laid side by side that, when viewed from a distance, blend together to make other colours, forms, and outlines, and give an impression of shimmering light.
Seurat's reliance on the optical mixing of colour was inspired by the scientific colour theories of Herman Helmholtz and Michel-Eugène Chevreul. The technique used more regular and even brushstrokes than those of the Impressionists, who mixed pigments to create the colour required. Seurat's work is seen as inaugurating the school of neo-Impressionism
, and his use of pointillism was taken up by, among others, Camille Pissaro
and Paul Signac
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