[00:00] I've got a big balloon and a small balloon separated by a valve. What happens when I open it? How is that air going to flow? What's going to happen to the big balloon? What's going to happen to the small balloon? Hmmmmmm. Um, um... I think that maybe slope sizes.
[00:13] I think nothing's going to happen. So with the atmospheric pressure, I think nothing will happen. Nothing's going to happen? This one's going to get bigger because I feel like this one's already like too full with air. Maybe this one will pull air inside that one. Probably the air is going to push from this one to the smaller one
[00:27] because there's more pressure coming from this side. from this side. I'd say they become equal sized. They will stay the same. Let's test it out.
[00:39] The big balloon gets bigger, which is super counterintuitive. What the ? What? But I thought,
[00:52] but why? Why? Why? So why did the big balloon get even bigger? The smaller balloon was actually at a higher pressure. That's because when a balloon is smaller, the polymer chains inside the rubber are tangled up tight. And that makes a smaller balloon much stiffer.
[01:05] But as it inflates, those polymer chains uncoil and they relax, which means that the larger balloon is actually at a lower pressure. It's pretty counterintuitive, but you might have noticed it if you've ever,
[01:17] you know, blown up a balloon and noticed it at the beginning is a lot harder. It's a lot harder and then it becomes a bit more easier. Is it getting easier? Yeah, it is. Yeah. Crazy. Yeah, there you go. I wouldn't think about it. Awesome.
[01:30] Thank you for talking everything.