Light has been used for architectural effect throughout human history. However, the modern concept of light art emerged with the development of artificial electric incandescent light sources and experimentation by modern artists of the Constructivist and Bauhaus movements.[1] "Prounenraum (Proun room) (1923), by El Lissitzky, is considered by many art historians to be the first time an artist incorporated architectural lighting elements as a component integral to his work."[2][3] The first object-based light sculpture was the Light-Space Modulator (1922-1930), by László Moholy-Nagy.[4][5] Experimentation and innovations in theatrical light have often influenced other areas of light use such as light art. The development of Modernism and the electric light go hand-in-hand; the idea of the modern city with high-rises and electric light epitomizes this development.