What Watt? is a memorial to the incandescent lightbulb. It’s a spherical chandelier made up of 1243 suspended bulbs of various shape and size, illuminated by a single low-energy light source. By 2011, all forms of incandescent light bulb will have been phased out in favour of greener alternatives. What Watt? marks the passing of a design that has remained relatively unchanged since its invention 130 years ago.