Floating Bernoulli Ball
A ball hovers in an angled air stream and refuses to fall out — a striking demo of airflow and pressure.
Start building ↓The build
Start the air
Point the blower straight up on a cool setting.
Float the ball
Set the ball into the stream; it hovers.
Tilt it
Slowly angle the stream — the ball stays trapped.
Add a funnel
Blow through a funnel to pin the ball even harder.
Fast-moving air around the ball has lower pressure than the still air outside, so the surrounding higher pressure pushes the ball back into the stream.
A closer look
Bernoulli's principle links faster flow to lower pressure; the pressure difference creates a restoring force that traps the ball.
Variables to test
- 1 Try heavier balls — what's the limit?
- 2 Tilt further; find the maximum stable angle.
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