Physics 30 - Nov 28 General Relativity

We have been talking about different kinds of forces for a while and one force in particular that we studied was the force of gravity.  We learned today that gravity actually doesn't exist!!!! At least not as Newton has described it as a force.  Albert Einstein described gravity to us in a different way.  The video below sums up Einstein's Theory of General Relativity. For a video of what it is like to imagine higher dimensions, here is an interesting view from a flatlander - a hypothetical being that only exists in 2D.