Alfredo Jaar, Lament of the Images, 2002.
"Two tables with light boxes embedded in their surfaces are placed on top of one other in reverse positions. The tables are the same size but one is suspended and movable while the other one is grounded on the floor. When the two tables are on top of each other, the room becomes completely dark. As the suspended table is pulled upwards by strings tied on its legs, a rim of light starts to appear until the space becomes dominated by the bright lights that irradiate from the surfaces of the two tables. The viewer experiences a similar effect of becoming blind by the light. After being suspended all the way, the upper table slowly goes back to its initial position and the room is filled with darkness again.” +
watch the video of the installation here.