Helix on the cylinder
![](https://i.ytimg.com/vi/Ff8DFJDSkjU/mqdefault.jpg)
8:34
Involute of the circle
![](https://i.ytimg.com/vi/88bMVbx1dzM/mqdefault.jpg)
21:29
What if you just keep zooming in?
![](https://i.ytimg.com/vi/NYIb-Hfd_-4/mqdefault.jpg)
8:50
Parabola by rectangle method
![](https://i.ytimg.com/vi/XLzTB4KLCxU/mqdefault.jpg)
17:58
The Incredible Strength of Bolted Joints
![](https://i.ytimg.com/vi/VznBJkOYCqY/mqdefault.jpg)
8:59
Cycloid of the circle
![](https://i.ytimg.com/vi/h6w4SX7ZJMQ/mqdefault.jpg)
31:11
Ethical Hacker: "I'll Show You Why Google Has Just Shut Down Their Quantum Chip"
![](https://i.ytimg.com/vi/VMHCyzTP4oE/mqdefault.jpg)
21:08
Who is Smarter? Engineer vs Chinese 5th Grader
![](https://i.ytimg.com/vi/tqClY6PDCW0/mqdefault.jpg)
12:32