Created for the Turbine Hall of Tate Modern, London, this site-specific installation employed a semi-circular screen, a ceiling of mirrors, and artificial mist to create the illusion of a sun. Aluminium frames lined with mirror foil were suspended from the ceiling to create a giant mirror that visually doubled the volume of the hall – along with the semi-circular screen mounted on the far wall, its long edge abutting the mirror ceiling. Backlit by approximately 200 mono-frequency lights, the semi-circle