• BurnedDonutHole@ani.social
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    4 days ago

    Modern physics is full of assumptions and placeholders for the generally accepted theories to work such the dark matter, dark energy, the inflation field, quantum gravity and gravitons etc… We don’t really know what they are, they are basically mathematical requirements for the currently accepted theories to work.

  • hayk@lemmy.ml
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    4 days ago

    traveling back in time is not mathematically disallowed by the general relativity.

    in fact there is a lot of work done on the topic, and lots of potential scenarios proposed (which usually involve describing the space-time warped into weird 4D shapes). what GR does tell you is what kind of matter/energy would produce such spaces (since in GR these two are intertwined), and that’s kind of where common sense works again: most proposed geometries do require either negative energy densities or mathematical singularities (which to be fair are not impossible, but we kinda never seen that, aside from dark energy).

    on the other hand – faster-than-light travel is also possible – albeit with similar constraints.

    • UnderpantsWeevil@lemmy.world
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      4 days ago

      traveling back in time is not mathematically disallowed by the general relativity.

      Moving mass backwards through time isn’t strictly mathematically disallowed. Idk what it’s going to look like when it arrives, though.

      What does a Tachyon even look like?

      • hayk@lemmy.ml
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        4 days ago

        i didn’t mean purely mathematically. but from the physics standpoint. in other words, if you provide enough dark energy and shape it into a specific configuration, it will generate space-time where time travel is possible in practice.

  • village604@adultswim.fan
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    5 days ago

    Bloodletting is still a legitimate medical treatment, now called therapeutic phlebotomy.

    Some medicines, like testosterone, can increase your hemoglobin or blood count, so donating blood is the fix for it.

    • Anivia@feddit.org
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      5 days ago

      Testosterone, even when taken at supraphysiologic dosages, rarely causes erythrocytosis to an extent that therapeutic phlebotomy is necessary.

      Other anabolic steroids, particularly Equipoise (aka Boldenone), increase red blood cell count significantly more than testosterone.

    • stringere@sh.itjust.works
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      5 days ago

      Hemochromatosis, too. Body doesn’t eliminate iron so it can build up in organs, notably liver and kidneys.

      The treatment is bloodletting. My wife wanted to get leeches. I settled for just donating 32 times in the first year after finding out. My ferritin count was 9 times the usual max for a man my age. My gallbladder fluid was carrying iron. I was Iron Man.

      • dkppunk@piefed.social
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        4 days ago

        I haven’t seen it happen, but I wouldn’t be surprised.

        My girl bun does stick her nose up my boy bun’s butt sometimes. But I think that’s just to nip his thighs and get him to move out of her way lol

        Oh! I forgot, mama rabbits feed their special poops to their babies. So the answer is, yes, they do eat other rabbit’s poops.

    • Maeve@kbin.earth
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      3 days ago

      Similarly, hot water for ice cubes, room temperature for thawing. I’ve heard adding white vinegar accelerate thawing but idk?

      • MatSeFi@lemmy.liebeleu.de
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        4 days ago

        But ambiguity arraises from the lack of a coherent explanation, because there are so many parameters to consider when doing the experiment (especially when doing this with water). Therefore hot liquids can freeze faster than cold ones. Its not a must. That it can happen is proven. A quite entertaining read about the general phenomenon can be found here

        • blady_blah@lemmy.world
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          4 days ago

          No, it doesn’t. The ambiguity rises from the fact that it’s not that repeatable. There are many experiments that don’t find this phenomenon to exist when they test it. Then there’s some that do. That’s the problem.

          My memory is that the majority of them find that it doesn’t exist and that a small minority find that it does.

  • AnBee@lemmy.blahaj.zone
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    5 days ago

    If you get methanol poisoning for example from badly made liquor then the remedy for that is to drink ethanol (good liquor).

    • Katana314@lemmy.world
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      5 days ago

      “You want my thesis? I hate college!! My thesis is going to be about taking a SHIT up your ASS!”
      (Four years later)
      “Wow, Mr. Blake! The results of your medical trial were astounding! These are excellent results!”
      “Wait…huh?”

  • kyonshi@piefed.social
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    5 days ago

    Every single one of us is travelling through space on a tiny speck of dirt, circling a permanent explosion that doesn’t know how to stop itself at 30km/s.
    That explosion and multiple specks of dirt besides our own dance around the center of the galaxy in a complex ballet with 200 billion other permanently exploding balls of fire and plasma, many of which are sizeably larger than ours and also have collected pieces of dirt circling around them, at a speed of 200km/s. The center of this agglomeration of giant balls of fire and dirt is a… thing… that is in itself so massive it can’t help eating everything that comes near including suns, light, and the concept of time.

    And there, travelling around the center of the galaxy at 200km/s, spiraling around your sun at 30km/s, there is you. And somehow you have to work tomorrow.

  • village604@adultswim.fan
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    5 days ago

    Ethanol can help protect your liver from the damage an acetaminophen overdose causes.

    You’d think that doubling up on liver harming substances would have an additive effect, but nope.

    • mic_check_one_two@lemmy.dbzer0.com
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      5 days ago

      Similarly, ethanol can help protect you from the poisonous effects of methanol (wood alcohol). Methanol by itself isn’t actually harmful, but it gets broken down into harmful byproducts that will make you go blind and then kill you.

      The enzyme responsible for breaking down methanol is also used to break down ethanol. And enzymes have a limited capacity for work. In other words, they can only break down a certain number of molecules at any given time. And the enzyme is more compatible with ethanol than methanol.

      So if you suspect someone drank methanol, (it is a common ingredient in antifreeze), you should have them start taking shots. Pump them full of as much liquor as possible, as quickly as possible. Get them absolutely shitfaced ASAP, and keep them wasted until they get to the hospital. It will prevent the vast majority of the methanol from being broken down, which will prevent the actual poisoning from happening.

      • village604@adultswim.fan
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        5 days ago

        It’s ethylene glycol that’s commonly in antifreeze, but ethanol protects against that too. I believe methanol is common in windshield wiper fluid, though.

          • sleepmode@lemmy.world
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            4 days ago

            Pretty much. Mazda had an issue with spiders attracted to gasoline clogging up fuel systems while being shipped overseas. And soy-based wire sheathing is apparently quite the delicacy to certain animals.

          • village604@adultswim.fan
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            4 days ago

            Huh, I swear there was an article earlier this month about them finally discovering that eels temporarily grow sex organs to mate, but it looks like they discovered spawning grounds in '22.

            Maybe the discovery was the temporary sex organs.