| This exhibit
demonstrates the exponential nature of the frequency of bouncing.
The visitor pushes down a plunger and picks up a steel ball bearing
on a magnet. Upon release, the plunger rises and the ball drops
on a steel plate. The sound of the bouncing ball is amplified and
heard on a set of speakers. Since the ball bounces to a height which
is a certain portion of its last bounce, the frequency of bounce
goes up exponentially. A remarkable aspect of this exhibit is that
the frequency of bounce can be as high as several hundred hertz,
providing the ball and plate are clean.