The term Neo-Impressionism refers to a pictorial technique where color pigments are no longer mixed either on the palette or directly on canvas, but instead placed as small dots side by side. Mixing of colors takes place from a suitable distance, in the observor's eye, as an "optical mixture".
In the early 1880s, French painter Georges Seurat studied writings on color theory by French chemists Eugène Chevreul (1786-1889), Charles Henry, and American physicist Ogden Rood, and invented a new painting technique that he named "separation of color" or "Divisionism", the main advantage of which is to give a greater vibrancy of color.