Em Viewing machine (2001), the experience and the process of public perception are among the central motivations in the creation of Olafur Eliasson's work. The piece is based on the operating principles of a kaleidoscope. Invited to handle the "seeing machine," the visitor can point it in the direction they wish and observe a point of interest through it.
The final image is the result of overlapping reflections in different positions, thanks to the angles of the internal mirrors that line the faces of the hexagonal tube. The sculpture functions as a tool that modifies our worldview, and the playful pleasure it provides is, ultimately, about perceiving oneself and one's surroundings.