You will need the following items for this experiment:
Here's what you do:
If you are not having any luck, try this.:
Bernoulli's principle tells us that air that is moving at high speed has lower pressure than still air. The air moves around the ball to create a pocket around the ball of low pressure air. When the ball moves to the side of the pocket, it will be pushed back in. And the upward force from the air stream keeps the ball aloft. It's quite a cool effect!
With a stronger air stream, you can levitate a bunch of different things. There are two guys from Ohio who call themselves "The Flying Bernoulli Brothers" who have made a career of doing this! They hold up beach balls, pop bottles (empty, of course) and even light bulbs! This is a very cool effect, and you are encouraged to experiment. Try using blow dryers, vacuums (if they have a "blow" setting), leaf blowers, fans, and anything else you can think of! (Note: fans often do not work all that well, since they will have a pocket of slower moving air in the center, where the motor and the center of the fan blades are. Ask Mr. Miller to demonstrate his Bernoulli Blower next time you are in class.
The contents of the page was modified from that created for the
Little Shop of Physics, Colorado State University
1. What does Bernoulli's principle tell us?
2. What happens as the air stream reaches the ball? What is created around the ball?
3. Describe the movement of the ball as it reaches the side of the air pocket.
4. Why does the ball stay up?
5. Fans often do not work well with this experiment for what reason?
6. Who are "The Flying Bernoulli Brothers?" List several items they have succefully levitated.