Description
What happens when I blow hard into the tube and what, if I hold it at the same time inclined?
It takes a little practice, but children as young a three can master it, and everyone has fun trying.
This clever little item demonstrates Bernoulli's Principle - Law of Pressure Differential. When air is forced around the ball it must move faster in order to "catch up" to the other side. The result is a decrease in air pressure around the ball that in turn keeps the ball in place.
The floating ball game trains the lungs and has a logopedics effect.
Country of production: PRC
Size: 15 cm, ∅: 3.3 cm
Age: Suitable from 4 years old
