Seurat's Pointillist Lighthouse: Optics and Neo-Impressionism

Georges Seurat's 1886 painting *The Lighthouse at Honfleur*, held by the National Gallery of Art in Washington, DC, exemplifies his Neo-Impressionist technique of applying tiny dots of complementary color to be optically mixed by the viewer—a method also called Pointillism or Divisionism. Seurat (1859–1891) developed this style based on his study of optics, aiming for more effective color than traditional paint mixing. Though he exhibited at the 8th Impressionist exhibition in 1886 and shared subjects like seascapes with Claude Monet and Auguste Renoir, Seurat is considered a Post-Impressionist due to his scientific, thoughtful approach, contrasting with Impressionist spontaneity. He made numerous studies before major works like *A Sunday Afternoon on the Island of La Grande Jatte*. Neo-Impressionism never gained wide popularity but influenced later modernists including Vincent van Gogh and the Surrealists.