Tate Modern, London

Approximately two hundred SOX lamps backlit a semi-circular screen at the far end of the Turbine Hall. A ceiling of mirror foil doubled the visual volume. Artificial mist filled the space. Over two million visitors in six months.

Exhibited worldwide

A room with low-pressure sodium lamps mounted to the ceiling. The 589 nm light reduces all perception to yellow and black. After leaving, visitors see a blue-violet afterimage as their cone cells readjust.

Van Gogh Museum, Amsterdam

72 circular monochromatic paintings combined with SOX lamps. Visitors viewed the paintings under sodium light, reducing colour perception to yellow and black.

Verbund, Vienna (permanent)

32 lamps under a sidewalk grate immerse artificial fog in yellow light as it rises up the building facade. The fog activates every three minutes.

A 39-metre corridor filled with dense fog and illuminated in yellow sodium light. Fellow visitors disappear into the mist. At the far end, viewers experience a blue-violet afterimage.

A corridor illuminated by monofrequency lamps. The same spectral reduction as Room for one colour, shaped as a passage.