5: Einstein's Field Equations
Lecturer: Edmund Bertschinger
6: Tracing Einstein's Development of the Special Relativity Theory - No video
Lecturer: Gerald Holton
Einstein's SR Paper: First Three Pages of Einstein's Original 1905 Paper on Special Relativity.
7: Supermassive Black Hole at the Center of Our Galaxy --Sagittarius A* - No video
Lecturer: Frederick K. Baganoff
Slides (PDF - 1.9 MB) Courtesy of Frederick Baganoff.
