| A light and heavy object
will fall with the same accelerations in the absence of friction.
In this exhibit a feather and a plastic chicken are dropped together
in a tube which the visitor can evacuate. When the tube has air
in it the plastic chicken falls faster and hits bottom while the
feather lazily descends at its terminal velocity. When the air is
removed, both hit bottom at the same time. The exhibit is openly
constructed so that the visitor may view all components including