taladar

I just found an interesting video about something I don't think I ever thought about much, the differential in a car:



And for those wondering now how that works on a train, where the wheels are connected without a differential a nice explanation by Richard Feynman:



I wish he was still alive, he had such a great way to explain stuff and he was naturally curious about a lot of things.

Edit: If you liked the second video the others of that series are great too