http://www.metmuseum.org/toah/ho/11/euwl/ho_1981.167.htm
Pol Bury ( Belgium 1922-),a piece of kinetic art.
From the page: “This work is a wall sculpture, consisting of a textured wooden circle with protruding bunches of grass- or hairlike tendrils that are powered by a hidden motor. As in Bury’s other sculptures, their unexpected and irregular motion can have an unsettling effect on the beholder. This element of surprise and chance is a legacy of the Surrealist movement, which has never fully ceased to inform the artist’s work.”