What happens to these balloons when you open the valve?

Veritasium · 1:34

1,477,264 views · 49,125 likes · Sep 24, 2026

Take a balloon and fill it with lots of air. Take another one and fill it with less air. Now connect the two via a valve.

What do you think will happen when you open the valve?…

Take a balloon and fill it with lots of air. Take another one and fill it with less air. Now connect the two via a valve.

What do you think will happen when you open the valve?…

Watch this and more from Veritasium on Playtoob — no recommendations, no algorithm, just the channels you choose.