Oh boy. Linking to this opened a real can of worms for my productivity. The guy in the video had a whole channel of similar content and then goes ahead to link to even more content in the fields of chemistry and math.

Thank you for submitting this. You made my weekend!

Also, it's really cool to see videos like this that go such great lengths at explaining difficult stuff in such an interesting way, providing enough detail to get you started, but little enough so that you have to look it up in detail if you really want to know.