**Recorded: **May 6, 2014

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**Lecture 11: **Field Equations 1

**Course Description: **"Einstein's General Relativity and Gravitation" is taught at UCI as Physics 255. Topics covered: Derivation of the Einstein Field Equations. Requirement of General Covariance, Nonrelativistic Limit. Equivalent Forms for the Field Equations. Vacuum Solutions. Cosmological Constant Term. Modifications to Newtonian Gravity. Cosmological Constant Interpreted as a Vacuum Energy.

**Required attribution:** Hamber, Herbert. Physics 255 (UCI Open: University of California, Irvine), ../courses/einsteins_general_relativity_and_gravitation.html [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License.