 Now with count of three, we will tear it off. Okay? One, two, three. What is something? There's a sound. Now the question is, why sound came? Okay. So definitely there's a sound wave. Bonds between the paper you've grown, the bonds there in the air. Okay, okay, great. So she's saying that when you break the bond, sound should come. Now let us understand what is sound. Disturbance. So it is a disturbance in water. In air. In air. In air. There is a disturbance in the air. I think the paper is causing a disturbance in air. How? If I would have dipped this paper in water and then given to... No, no, no. Then sound will come or not? No, let's do that, let's do that. Yeah, I do it. Sound will come? No, let's do it. No, let's do it. No sound. No sound. Because it's wet. So what? So what? So what? So what? Change the media. Okay, now tell me how the paper is created. What is the wood? Ful. Ful. Then what is ful? Wood. It's actually wood. And how the wood is formed. Like if you look at the microscope, what it is. If I look at through the microscope, it's a collection of a lot of fibers. Yeah. And when the fibers are broken, they can vibrate freely. Yeah. Dad vibration creates a vibration in air. And when it's wet, then there is a hydrogen bond between the water molecule. It doesn't let it vibrate very easily.