In PHY131 we briefly talked about Newton's theory of gravity, and we are now discussing Einstein's theory.
For fun, you might enjoy reading about yet another approach to gravity discussed at: http://www.theonion.com/content/node/39512
Today we discussed the pieces used by Einstein in building the General Theory of Relativity, and a bit about the theory itself. The discussion followed §D.1 and §D.2 of the Supplementary Course Notes with one exception. (Yes I didn't even follow my own course notes!). The exception was a slightly more careful discussion of the Equivalence Principle. Below is a link to a little document that discusses this in the first half; the second half of the document is the "derivation" of gravitational time dilation which is in the course notes
|The Side Screen Slides|
|Flash animation of a Foucault pendulum|