Discussion on answer by Wolphram jonny: Why does $ds^2=0$ for a light signal's worldline in general relativity?
Discussion on answer by Wolphram jonny: Why does $ds^2=0$ for a light signal's worldline in general relativity?
Imported from a comment discussion on https://physics.stackexchange.com/questions/594408/why-does-ds2-0-for-a-light-signals-worldline-in-general-relativity/594413#594413
| first message | 2020-11-17 |
| last message | 1543 days ago |
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