Surface roughness and ball flight

34:36going to cover here. Okay, the physics of soccer ball flight and how the texture of the ball affects that. Cuz the shape of the ball is just it's it's a sphere, right? But the the roughness is really where the magic lies. Okay? So, um when you have a new ball, you got to make sure it's not the Jabulani or whatever, right? You got to make sure it's not that. And so, Adidas actually did a bunch of tests, 300 lab tests. Those aren't published, but a group of scientists did independent tests. Um this is from the University of Puget Sound in Washington, and then there's also some universities in Japan that

35:16lent their wind tunnel to do some of this testing. And it's really cool cuz they published a paper in Applied Sciences out of the MDPI publishing hub. Trionda enhanced surface roughness relative to the previous World Cup soccer balls. And they compared the physics between this soccer ball and all the previous ones. And it's actually really really cool. The main thing that