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Joined 3 years ago
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Cake day: July 7th, 2023

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  • Not really that simple. Is EM curving space time? Yes. But it does it in a very different way. EM is a force which couples to charges, magnetism, transferred by light. Gravity is a completely different beast. Super weak, but couples to everything. Mass? Yeah. Massless particles (light)? Yeah. The interraction strength itself is not an indication on how it affects the curvature of space (well, EM as a gauge theory is a curvature of a mathematical space, but gravity is one of physical space).

    As far as I know, none of the observed black holes (like in LIGO) have ever observed something that would be a charged black hole, but there is the theoretical formulation of one called a Reissner Nordström black hole. In that formulation you can see how adding charge and mass acts differently. For one thing, EM charge can be negative and positive, but either sign affects the spacetime the same, in a very simple way: the square of the charge appears in the expression. But mass only appears linear. Just as an example of how they play a very different role when it comes to curvature.










  • There is a Swedish film on this subject. As described on imdb:

    A German business man, Volkswagner, comes to Österlen in the south of Sweden to build Deutschneyland, a gigantic amusement park for German tourists. The local councilors and the member of parliament are all in favor of the idea, although it will turn vast areas into parking lots for cars. The Lindberg family does not like the idea and with the help of a little magic, they start scheming against it.

    There are scenes where they are walking around in the middle of nature going

    Can you imagine a better place for a popcorn stand?

    And stuff like that. https://www.imdb.com/title/tt0068025/





  • Ok. What exactly is not working with the network? Are you on wired or wireless? If you do run ip a, does your interfaces show up?

    Another thing to look at is journalctl -b. Look for errors, lines in red, anything about the network. If you can roll back to a functioning boot (or run journalctl -b -1 should show the previous boot) and compare to that is probably a good idea, journald (displayed by that command) may contain errors that are not relevant, so comparing to a functioning boot may be good.

    Also, depending on how old your computer it, there may be another hdmi output which uses the GPU integrated to your CPU. If that is the case, you could switch to it if the nvidia card stops working just to troubleshoot, take a look at journalctl -b and look for errors again. If the screen just goes black, and does not boot, this may also give you some messages as to why the nvidia graphics is not coming up.