Timeline for What is Wald talking about here in his book "General Relativity"?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Oct 23, 2023 at 11:46 | vote | accept | Nicholas James | ||
| Oct 23, 2023 at 11:38 | history | became hot network question | |||
| Oct 23, 2023 at 9:03 | comment | added | gandalf61 | I don't really see how setting $c=1$ simplifies the argument here. Maybe clearer to leave $c$ as $c$ and then get an explicit factor of $c^2$ at the end. | |
| Oct 23, 2023 at 6:13 | comment | added | The Tiler | See en.wikipedia.org/wiki/… and en.wikipedia.org/wiki/Energy%E2%80%93momentum_relation | |
| Oct 23, 2023 at 6:10 | answer | added | Relativisticcucumber | timeline score: 3 | |
| Oct 23, 2023 at 5:23 | history | edited | Qmechanic♦ |
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| Oct 23, 2023 at 3:55 | comment | added | Ghoster | $E=m$ is not “extremely silly”. Is this the first time that you have encountered the use of natural units such as $c=1$? Natural units are generally first encountered when learning SR, not GR. Likewise with upper vs. lower spacetime indices. | |
| Oct 23, 2023 at 3:48 | comment | added | Ghoster | $E=mc^{100}$ wouldn’t be dimensionally correct when using SI units. | |
| Oct 23, 2023 at 3:46 | comment | added | Ghoster | If you understand the difference between $u^a$ and $u_a$, the difference between $\partial^a$ and $\partial_a$ is similar. | |
| S Oct 23, 2023 at 3:38 | review | First questions | |||
| Oct 23, 2023 at 5:07 | |||||
| S Oct 23, 2023 at 3:38 | history | asked | Nicholas James | CC BY-SA 4.0 |