Gravité 2002

A line drawn by a needle, starting from a column in space, turns on another column and points to the center of a round shape yellow sand on the ground. The needle is attracted by the magnet in the middle of the yellow sand field, but it is suspended in the air, there is no touch, and keeps a certain distance from anything. The paper on the line is a piece of yellowed blank paper which was found at home many years ago.