About This Lesson
'In this SciShow video, ....UPDATE: We got a couple of things wrong when it comes to gravity (particularly that it has nothing to do with photons). Check out this video from TheGentlemanPhysicis (http://www.youtube.com/watch?v=4y-dFL...) in which our confusion is explained. We also did a whole video about gravitation in our series on the four fundamental forces of physics, which you can watch here: http://www.youtube.com/watch?v=yhG_Ar...
