- Set the hair dryer to cool, switch it on, and point it at the ceiling. - Carefully put the ping-pong ball in the stream of air. Hold the hair dryer very steady and watch as the ping-pong ball floats ...

Set the hair dryer on the cool and high setting. Turn it on and point it upward. Carefully put the ping-pong ball in the stream of air. That step may take a little practice, but don't give up! Hold ...

GRAND RAPIDS — A floating ping-pong ball… How can we make a little ball float without even touching it? This month's experiment will teach us about some of the forces acting against it. Let’s get ...

A ball or other object is suspended in the air stream provided by a reversed vacuum cleaner according to the Bernoulli's principle. Place a ball on top of the vacuum cleaner. Turn on the vacuum.