Groupe de Recherche d’Art Visuel

The Groupe de Recherche d’Art Visuel (GRAV) was a French art collective focused on creating art that engaged the viewer's perception. They were associated with Op art, a style that uses optical illusions through precise manipulation of shapes and colors. GRAV artists aimed to evoke perceptual illusions, ambiguities, and contradictions in the viewer's vision. They created large-scale sculptures using light, motors, and various materials to generate the illusion of movement in space, a key characteristic of Op art. This approach differed from earlier geometric art by intentionally manipulating formal relationships to create these visual effects.