TOPIC:

ID Code: F5-06
Purpose: Illustrates the Coanda effect.
Description: A beach ball can be floated in the air stream provided by an air blower or vacuum cleaner. The ball remains in the air stream even when the air stream is significantly tilted. As the air flows past the ball, the air flow curves around the surface of the ball, due to the Coanda effect. The reaction force on the ball levitates the ball in the airstream.
Availability: Available

We have had a query about the physics of this from another institution. Can anyone offer a good discussion of the mechanics of the physical effects at work here? The arguments about the relationships between the Bernoulli Effect and the Coanda Effect are not always clear.