As we noted earlier in the course, Einstein’s general theory of relativity covers this, and the mathematics are formidable. However, unlike the simple example which we studied earlier, there is in gen...As we noted earlier in the course, Einstein’s general theory of relativity covers this, and the mathematics are formidable. However, unlike the simple example which we studied earlier, there is in general no universal frame of reference that is everywhere inertial to which we can transform. In particular, there is no such thing as a straight line in the geometry of general relativistic spacetime. An example of a curved space is the surface of a sphere.
