通用的教训
We're now going to learn a little bit about gravity. And just so you know, gravity is something that, especially in introductory physics or even reasonably advanced physics, we can learn how...
What do Harry Potter, Katniss Everdeen, and Frodo all have in common with the heroes of ancient myths? What if I told you they are all variants of the same hero? Do you believe that? Joseph Campbell...
1
annotations
We're all familiar with gravity as "the reason objects fall", but there's much, much more to gravity than that. Gravity is a long range attractive force between all...
