Transcript (en)

Blow! Harder! No, there's nothing, there's no trick in here, my goodness. I mean, this is a ping-pong ball, you know, I'm not a magician. Come on! Blow it up! Hey, it doesn't work. It's amazing. Why don't you sit down? Air is flowing here. And right here, where there's very little room, The air will have very high speed, way higher than it has where it has lots of room. And so at the highest speed you get the lowest pressure. And so the ping pong ball is sucked in while you're blowing it. And to give you the conclusive proof of that, I will do it this way. I will put the ping pong ball like so. And I'm going to blow like this. And if I blow hard enough, the ping pong ball will stay in there. Because I generate a lower pressure right here where the passage is the smallest. But I have to blow quite hard. See that? Isn't that amazing?