Null - This is my first experience with an explicit example of null geodesic affine parameter. For Schwarzschild metric it's simply r. I found it perplexing so I have to think a bit about it. Still quite unexpected.

5:42am PDT - June 30th, 2021

This is my first experience with an explicit example of null geodesic affine parameter. For Schwarzschild metric it's simply r. I found it perplexing so I have to think a bit about it. Still quite unexpected.

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