In a specially constructed triangular gallery at ARoS Aarhus Kunstmuseum, Denmark, a daylight lamp was fixed to a centrally located column. Around the lamp hung yellow colour-effect filter glass and black glass strips of varying widths, rotating in both directions at different speeds. Moving bands of yellow, violet, and white light, which spanned from floor to ceiling, were projected onto the walls alongside the shadows from the black strips and the shadows cast by the visitors.