In videos Relativity 3 & 4 we examined some of the concepts that would need to go into a General Theory of Relativity. Here we begin to dig into Einstein's landmark 1916 paper "The Foundation of the General Theory of Relativity." Space and time are stripped of any objective existence and gravity has no meaning independent of the observer's completely arbitrary frame of reference.
Relativity playlist: http://www.youtube.com/playlist?list=PLF56602BAC693237E
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Playlist videos for General Theory of Relativity: