what is general relativity really talk about?
Please note that if you scroll a little bit further down the PF list, we DO have a section devoted to Special and General Relativity. Please post all future questions related to this topic on that section.
The short version is that General Relativity extends special relativity so that the resulting theory includes gravity.
Special Relativity - Reconciled Newton's mechanics and Maxwell's electromagnetism...but only for things in uniform motion (non accelerating reference frame). Time and space are relative. Speed of light is constant.
General Relativity - Expanded SR to include acceleration and gravity. Provides a theory of gravity (warped spacetime).
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