• Tudsamfa@lemmy.world
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    9 days ago

    I think there was a science experiments book for kids that dared me to drink water from a glass upside down through a straw while hanging from monkey bars or something. It was meant to show how our body deliberately moves food towards the stomach instead of solely relying on gravity, but instead it showed that I my legs were too weak.

    A shame these experiments are deemed to dangerous nowadays and people have to show their ignorance online, simply because the new metal straws have pierced the brains of anyone who did them.

    • notabot@piefed.social
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      9 days ago

      because the new metal straws have pierced the brains of anyone who did them.

      I am confused by this, straws go in the mouth, if people are sticking them in their brains, they’re doing it wrong, or are you saying there is a crack team of assasins out there who’ve vowed to keep this knowledge secret in a particularly gruesome manner?

      • Tudsamfa@lemmy.world
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        9 days ago

        I implied that I fell from the monkey bars, and since I was drinking through a straw, I fell head first onto my water glass with the straw in my mouth that was below me. A common misconception of metal straws is that they are dangerous and can pierce through the mouth into the brain.

        I guess I could specify where the glass is in the experiment.

        • gandalf_der_12te@discuss.tchncs.de
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          9 days ago

          A common misconception of metal straws is that they are dangerous and can pierce through the mouth into the brain.

          I mean it depends on the diameter of the straw. If the straw is thin as a needle, i imagine it sure can. I mean it’s only about the pressure, not the total amount of force. And pressure is force per area, so if the cross-section area of the straw is small, it will generate enormous pressure and that can surely pierce your skull.

    • Avicenna@programming.dev
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      9 days ago

      I mean I can totally see kids choking on water while doing this too. Yes muscles but I am sure gravity helps too.

  • jpablo68@infosec.pub
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    9 days ago

    good question actually, the esophagus can squeeze things towards the stomach without gravity’s help.

    • mic_check_one_two@lemmy.dbzer0.com
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      9 days ago

      It’s even cooler than that: The esophagus can squeeze things towards the stomach against gravity. You can drink water while hanging upside down. You’ll also get a nose full of water because your sinuses would be below your mouth… But once it’s in your throat and you’re swallowing, it’ll make it to your stomach just fine.

      If you wanted to avoid the sinus problem, I guess you could just lay on your back on a steep incline. Not fully upside down, so your sinus cavity is still above your mouth. That way the water would hit the back of your throat where you could swallow it, instead of just draining straight into your sinuses.

      • xziñik@feddit.cl
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        9 days ago

        what!? i can clearly remember being like 10 hanging upside down from my knees on a jungle gym and drinking water from a bottle and having no problem at all and proving my mom that i wouldnt choke doing that

      • Mycatiskai@lemmy.ca
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        8 days ago

        If you slowly inhale through your nose while drinking the pressure from the air coming in will likely direct the water towards your esophagus as well as keeping water out of your nasal cavity.

  • snoons@lemmy.ca
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    9 days ago

    Some poor soul has never watched Bill Nye the Science Guy… what has the world come too… D:

  • megopie@beehaw.org
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    9 days ago

    This was legitimately a significant concern that early space programs had. Like, how well would people be able to swallow in free fall, would certain kinds of food cause problems? The food experiments during the Gemini program are pretty interesting

  • starlinguk@lemmy.world
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    9 days ago

    I’ve just realised that because of my esophageal dysmotility I wouldn’t be able to eat in space.

    • Asetru@feddit.org
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      9 days ago

      Is this a writing prompt about being left behind on a dying earth because you’d starve on your voyage to Mars?

    • gandalf_der_12te@discuss.tchncs.de
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      9 days ago

      you could set the spaceship in rotating motion, sothat the centripetal forces push you outwards and create the impression of artificial gravity for you.

      besides, why does no spaceship seem to be doing this today, like, at all?

      • psud@aussie.zone
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        3 days ago

        The centripetal force is provided by your legs (and the spokes of the centrifuge)

        You’re looking for inertia or the fictitious force (which makes the calculations easier): centrifugal acceleration

      • Krauerking@lemy.lol
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        9 days ago

        Cause we have lots of places to do science with gravity, its nice to have a place to do science without it.
        And hard to maintain the force without damaging the ship. We have small space stations and shuttles and they would need to rotate really fast to generate gravity similar to earth and that is taxing on the structure and you since your feet would have a lot more gravity than your head closer to the center of the circle.

        If you have seen project hail Mary that is why there is an extendable counter weight actually. It helps move the central point of the rotation further away from the astronaut and let’s it rotate slower and have more consistent force.

  • mlg@lemmy.world
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    9 days ago

    I’m too lazy to find it now, but one of the tests they tried long before NASA started sending people into space was eating a banana upside down where they figured out the digestive tract can function against gravity.

    There was also an encyclopedia brown story about this in which I remember Geese and Ducks rely on gravity to swallow, therefore they wouldn’t be able to eat in space.

  • Railcar8095@lemmy.world
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    9 days ago

    Yeah, keep posing this images, don’t complain when Freezer attacks looking for the other 7 balls

    • Buddahriffic@lemmy.world
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      9 days ago

      Don’t worry, Goku will save us. Well, some of us. When he eventually gets here, after the Z warriors have been beaten up.

      Or if we’re lucky a new strong character will one shot him as his introduction.

    • AJMaxwell@lemmy.world
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      9 days ago

      There’s a slight increase in the blood pressure in your upper body, and a small possibility of thrombosis, blood clots forming in your veins. But after 50+ years of space flight no one has had complications.

    • bdonvr@thelemmy.club
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      9 days ago

      Veins are small so capillary action keeps things in order.

      With no gravity though you’ll have higher blood pressure to your head (and less to the legs)- it kinda makes astronauts faces a bit puffy. iirc this can slightly negatively affect vision long term.

      Most of your body processes are in a small enough space that capillary action overtakes gravity.

      • Evilsandwichman [none/use name]@hexbear.net
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        9 days ago

        With no gravity though you’ll have higher blood pressure to your head (and less to the legs)

        So what you’re saying is they should alternate between upside down and right side up

        • bdonvr@thelemmy.club
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          9 days ago

          Technically if they did that fast enough the blood pressure on both would get higher, potentially MUCH higher.

  • hperrin@lemmy.ca
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    9 days ago

    I don’t know about you guys, but I just open my throat straight down to my stomach and pour the food in.

  • KiwiTB@lemmy.world
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    9 days ago

    Given how filthy the ISS is, I don’t know if I’d want to eat anything not nuked into oblivion.

          • Brave Little Hitachi Wand@feddit.uk
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            9 days ago

            Part of it is I don’t know how skin particles will act inside a space station. Are there static electricity forces that would make it stick to surfaces, or does it remain suspended in air until the filtration gets to it?

            • atomicorange@lemmy.world
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              9 days ago

              Static electricity would definitely be a factor, but there’s probably pretty good air circulation and filtering. That combined with regular wipe downs of surfaces probably keeps dust under control.

              I know the moon missions in the past had a hell of a time dealing with lunar dust. It’s super fine and static was sticking it to everything.

      • KiwiTB@lemmy.world
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        9 days ago

        Imagine trying to clean it. You can’t whip out a mop. Showers, wash cycles etc are all no go. Not too mention experiments from plants, chemicals, drugs etc which create their own issues. In some ways it’s clean, but others not so much.

        • trxxruraxvr@lemmy.world
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          9 days ago

          You can use a vacuum cleaner, but since there’s hardly any gravity most would already get picked up be a simple air filter.

    • exasperation@lemmy.dbzer0.com
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      9 days ago

      You can swallow things while dangling upside down. The esophagus is strong enough to work against gravity.

      But liquids are a little bit more difficult, because they tend to flow in unexpected places in the mouth/sinuses/nose before trying to swallow.

      • CultLeader4Hire@lemmy.world
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        9 days ago

        Once I had to drink barium while being tilted upside down on a big table while they watched it with X-rays… apparently that’s a medical test lol I didn’t find it anymore difficult than drinking normally personally but it has to do with the strength of your swallow most of all, which is what they were testing at the time.

      • roscoe@lemmy.dbzer0.com
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        9 days ago

        Yup, cures my hiccups. Lay back over something so mouth to stomach is reverse inclined, as close to vertical as I can get. Then take several swallows of water. Either one mouthful that I took before I laid back swallowed a little at a time, or several sips from a straw after laying back.