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Joined 2 years ago
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Cake day: July 4th, 2023

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  • So, one observer will see those oscillations happen faster than the other?

    Not quite. In each observer’s frame of reference, time appears to pass the same; it’s only when you try to reconcile the between two objects that are not at rest with respect to each other does relativity show up.

    Basically, when you bring someone back to Earth, the observers will find that their watches don’t match up even though both observers experience time passing the same way as normal (because the oberserver is by definition at rest with respect to their own frame of reference).

    TL; DR: Relativity is a pain in the ass and makes no sense in everyday terms.

    edit: disclaimer - I am not a physicist and have not taken physics classes in a decade plus, but I do teach science at a college. I’m going mostly on half-remembered lectures and some random one-off discussions I’ve had with my buddy in the physics department over the past few years.



  • It’s been a long time since I took modern physics, so I’m not positive, but I think you’re right that the moon would have time moving slower, and if your 50ms/day is right (edit: I based this on the moon traveling faster than the earth, but I don’t know anything about gravitational relativity, so that’s probably wrong) then you’d need to do something like skip a second every 20th day on the moon to keep pace with Earth. We could call it an “anti-leap-second”

    Programmers, that seems pretty simple; what’s the big deal? /s


  • No, the moon’s rotation isn’t on a 24-hour cycle. I’m not an astronomer, but I pretty sure since it’s tidally locked to earth and on a 28-day cycle around the earth, a lunar day is actually 28 Earth days, but I’m not actually sure how that would factor into the number of time zones (I’m pretty sure it would be more complicated than just 24 time zones to match 24 time zones on earth, though).

    Plus, I think the speed of the moon relative to the sun is different enough from Earth that you need to take relativity into effect, which is the real headache here.




  • If he wasn’t alone what would shooting him accomplish? You still haven’t actually presented a compelling reason he needed to be kept under a gun.

    Once Bushnell was on fire and had stopped moving toward the gate/fence, you are correct, he didn’t need to be kept under a gun. However, if he had started to move in a threatening way or if he had been working with a larger group, having the guns drawn could have saved crucial seconds if someone else began to act in a threatening way. The security forces simply didn’t know what the fuck was happening, and in that situation, it is better to have the guns drawn and to be ready for the worst case scenario.

    I think it’s understandable that people untrained for a situation like this would fall back on the default, I know I wouldn’t know what to do, but calling that “reasonable” as if it really makes sense in hindsight is a stretch.

    That’s fair. I can get behind calling it “understandable” instead of “reasonable”


  • Considering the security forces had no idea whether he was working alone or what was happening, they obviously didn’t think they could rely on the metal fence.

    Look, I’m all for a free Palestine and I agree that what is happening in Gaza is a genocide. I also think that voluntary membership in any American or Israeli law enforcement makes them complicit in the heinous acts perpetrated by American cops and the IDF, respectively. I don’t know you, but I’d guess that you and I agree a lot more than we disagree on these issues. I’m just saying, from the PoV of the security forces at the Israeli embassy, this was a potential threat to the embassy and their job is literally to prevent threats from harming the embassy. Without any further information to go on, their decision to draw guns first and get the extinguisher second is reasonable.





  • People aren’t farming out their dissertations to other grad students (usually). Yeah, once a person is a PI, their grad students do most of the actual writing, but anything written in their dissertation or as a grad student or post-doc is almost certainly all them, especially if they are the first author.

    And even once they are a PI or even a department chair or university president, anything they write where they are listed as the first author is 100% their responsibility.

    Your post just reads like you don’t really understand how academia works.