Black Matter

An membrane is connected to a horizontal cable. The cable itself runs towards the opposite corner of the room and rolls and unrolls on a winch. As the result, the black surface is constantly moving: as soon as the membrane reaches a maximum extension – at the break limit – the winch motor reverses and the rubber surface can take again the initial shape, before starting a new cycle. This movement produces consecutively a depression and a constant change in the air volume of the room.