9. Geodesics.

MIT 8.962 General Relativity, Spring 2020
Instructor: Scott Hughes
View the complete course: https://ocw.mit.edu/8-962S20
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The kinematics of bodies in spacetime.  Free fall described by geodesics: trajectories that parallel transport their tangents through spacetime, and extremize the experienced proper time.  How symmetries of spacetime lead to quantities being conserved along geodesics; associated notions of 'energy' and 'angular momentum' for certain spacetimes.

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