Mathmos Space Projector Instantly turn your office into the hippest digs on the entire floor with this groovy oil wheel projector from Mathmos. The Mathmos Space Projector casts a moving image of up to 1.5m onto a wall or ceiling with a choice of two different colors. The projector body can be angled to point at the wall or ceiling. The brightness and size of the image are controlled by the amount of light in the room and the distance from the display surface (subdued lighting is best).