The artist group “ZERO” was founded in 1958 by the artists Heinz Mack and Otto Piene. In 1961 Günther Uecker joins the group. The artists desire to break through various traditional genres of art. Usage of light as a medium and artistic element is intended to produce a spatial pictorial language, whereby entirely unconventional visual effects are achieved. They experiment with a wide variety of materials: by using illuminants, mirrors and other reflective materials, nails and fire, they create fascinating kinetic and expansive works that, in their interactive dynamics, are intended to entice viewers not only to look but to actively engage with the works themselves. In this way, the static character of traditional works of art is broken. In Germany and internationally, “ZERO” quickly enjoyed a broad audience and many like-minded artists, including Gotthard Graubner, Johannes Gecelli, Hans Haacke, Yves Klein, Jean Tinguely and Lucio Fontana.