Answering a reddit question about how fans are able to create low pressure in order to suck air.
Edit. the funny shape for a directional impeller is called a volute, and I drew it wrong the first time before I erased and redrew it. I forgot to point this out clearly in the video, so I hope no one was confused. Thanks so much for all the kind responses. I really enjoyed making this.
![](https://i.ytimg.com/vi/fn0srun6nb0/maxresdefault.jpg)