• perestroika@lemm.ee
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    2 years ago

    No problem, just tell them to ask from Baghdad, they should know where it is. :) A jug of wine or vinegar, one electrode of iron, another made of copper, voila… the Baghdad battery.

      • perestroika@lemm.ee
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        2 years ago

        No conclusive proof. It didn’t have a passthrough for one electrode of the two. It did have remains of acid inside and corrosion on the electrodes. One can speculate whether it was an experimental device, a faulty device or something else entirely (one alchemist trying to replicate another’s secrets and doing it wrong?).

        To add insult to the injury, it was lost or stolen during the war in 2003, so more analysis can’t be done until it gets re-discovered. :o

        I haven’t heard an alternative hypothesis, though… I try to imagine what else besides electrochemistry would one do with two dissimilar metals in an acid. It ruins the metals, it doesn’t make any known medicine or effective poison, it likely fouls the jug too… for a person to put copper and iron into a jug full of acid, there has to be a reason for doing it…

        • Iron Lynx@lemmy.world
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          2 years ago

          That all said, an attempted reproduction by Mythbusters, with ten of these jars, using lemon juice as the electrolyte, properly wired in series, did work, producing a voltage of about 4V. And prior to Mythbusters, various other researchers built similar reproductions using different electrolytes, which also produced a voltage. There is evidence to support that if the Baghdad Battery was produced properly, it would have worked as an electric power source.

    • Resistentialism@feddit.uk
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      2 years ago

      I have nothing to add to this comment. I just want to make sure everyone knows that “the Baghdad battery” name goes fucking hard.

  • Blasphemy@lemmynsfw.com
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    2 years ago

    I think it would actually be easier to wow people than people think. You’d just have to focus on older technology rather than completely modern stuff. If you know that steam engines are a thing, and even vaguely how they work, you can build the king a pump to get running water without having to run massive aqueducts, or a crane to build his massive projects, or any number of directly useful things. An understanding of basic germ theory could set you up to be the best doctor in the world. Or even just a bicycle would probably be quite useful to get around without a horse, and I’m sure anyone could make a rough mockup of a bike.

    • MotoAsh@lemmy.world
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      2 years ago

      I think you underestimate what it takes to get modern plumbing water tight and easy to manage. Threading, clean threading, teflon, and easy to manage plastic pipes, have all been invented within the last 200 years. Mostly, the last 80.

      and that’s just the literal direct infrastructure within a house. Water towers are not simple. Underground pipes are not simple. Civil plumbing and waste management is not simple.

      • KevonLooney@lemm.ee
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        2 years ago

        Yeah, even electricity is easy to explain. You just rotate a high quality magnet within a coil of thin high quality copper wire. Easy.

        Problems are:

        • How do you make a high quality magnet?
        • How do you purify copper fine enough?
        • How do you make a spool of the copper wire?
        • How do you make the bearings for the shaft?
        • linearchaos@lemmy.world
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          2 years ago

          Efficiency would certainly be pretty rough but wire’s been around since about 2,800 BC. Copper would be the way to go if you could manage it but any conductive metal would get the job done to some extent.

          Finding a reasonable safe insulator might be a little bit of a chore.

          Soft metal bushings have also been around for a really long time.

          Efficiency on magnets would be difficult, You might want to just use a really huge battery pile and electromagnets.

          The manufacturing tolerances for the axle the wire and everything would be a fight.

          I don’t think you have a chance in hell of producing anything in the same efficiency range is what we have today, but compared to not having electricity at all… It might be worthwhile.

          The thing is even if you make the electricity what the hell are you going to use it for? For light bulbs are going to need glass blowing in inert gases. You’re going to need diodes resistors capacitors and transistors to do radio, You could probably usher in tubes but that shi*'s almost black magic as it is.

        • 5714@lemmy.dbzer0.com
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          2 years ago

          Nah, problems arise much earlier. Metals are expensive (proper steel is a thing of the 1700s, try getting proper coke) and your claims might be considered too outlandish for funding of home industrialisation, even making the needed tools might take ages.

          Depending on when you are, science might even be considered evil, useless, unless you have very clear, direct and easy use cases (e.g. horse collar, compass, wheelbarrow).

          Interesting could be the printing press for problem solving.

          Proving electricity is easy, since even static electricity is relatively unexplained for a long time. You already know that metals are great conductors, hell, even what conductance roughly is. You know lead acid batteries. Simple conceptual motor and lead acid batteries together with printing press is probably enough to industrialise many societies early.

          Don’t know to get acid though.

        • cogman@lemmy.world
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          2 years ago

          Copper is the easy part. Get it hot enough and you’ll end up with high quality copper… Sourcing the copper is much more difficult.

          Finding magnets is somewhat simple, you just need some iron… That’s a lot more difficult. Iron smelting is way harder than copper smelting (especially without electricity).

          Making bearings is also difficult. It requires not only iron smelting but also high precision machining.

      • I Cast Fist@programming.dev
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        2 years ago

        and that’s just the literal direct infrastructure within a house. Water towers are not simple. Underground pipes are not simple. Civil plumbing and waste management is not simple.

        The romans did manage to build a nice system, tho. I hear the persians also managed one.

      • Blasphemy@lemmynsfw.com
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        2 years ago

        But it doesn’t have to be up to modern standards, and certainly doesn’t have to be with modern materials. Get the local cooper to make your pipes and reservoir with pitch-sealed wood. Or make it out of stone, or cast copper, or whatever they use to store water anyway. If it’s Roman or post-Roman, they’ve already had some experience with running water anyway, that wouldn’t be the impressive bit.

        Threading and such is mostly useful for mass-manufacturing standard pipes and using it everywhere, but at least at first you’d just be doing it for a rich/powerful person or two, where you could do something labour-intensive and unscalable.

        I’m not saying that you would get a perfect, modern system straight away, but if you can convince the people to give you the benefit of the doubt through a prototype or two, you could make something that works well enough. That would be what I’d be concerned about, even if you can magic away the language barrier, they’d likely just think you’re mad.

        • ℛ𝒶𝓋ℯ𝓃@pawb.social
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          2 years ago

          Language isn’t too much of a problem depending on the region. Assuming this is Rome or shortly before, Koine Greek and Latin are well enough known that you can learn it after a few years of study if you’re good with languages.

          • IWantToFuckSpez@kbin.social
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            2 years ago

            If you know that you get dropped in 14th Century England you could also prep and study Middle English since the Canterbury Tales is the first book written in that language. And we still have surviving copies.

          • Blasphemy@lemmynsfw.com
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            2 years ago

            Yeah, but I’m assuming you just get dumped there with minimal preparation. Otherwise you could also study up on early technology and know exactly what to make and how to make it to be impressive. And the ‘convincing them you’re not mad’ problem still exists.

  • Sir_Simon_Spamalot@lemmy.my.id
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    2 years ago

    But first, you need all the guns (and other modern weaponry) to gun down anyone trying to kill you. Might be useful to make them listen to you as well.

          • Intralexical@lemmy.world
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            2 years ago

            Eh. Like 90%+ of everybody who ever lived in pre-Industrial civilization was a slave or a serf or something like that. What does that say about the other 1% that “owned” them? And if your goal is explicitly to bring lots of revolutionary technologies, you’re probably going to disrupt a lot of established power structures. People in power don’t tend to take kindly to that, and as the ultimate outsider, you’ll be the perfect scapegoat for anything that goes wrong.

            It’s dumb to think only about fighting, and this specific scenario isn’t something that you’re ever going to be able to win through brute force alone. Also, using guns “to make them listen to you”, as the original comment said, sounds pretty evil depending on how it’s done. (E.G. Menace and threaten anyone questioning you: Evil. Gain favour with the royal army by providing guns, then ask for funding for medical research: Less evil.) But ultimately, it’s reasonable to be prepared for other people to act in bad faith.

  • TheObserver@lemmy.dbzer0.com
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    2 years ago

    The best a human can do without the knowledge of how it fully works is be able to push them in the right direction. Depending how far back you go you’d either be considered a god or a witch 🤣. Humans man we are strange.

  • DingusKhan@lemmy.world
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    2 years ago

    You know, a fun project would be compiling an instruction book for elevating/fast forwarding technology just in case someone does get sent back in time.

    • 5C5C5C@programming.dev
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      2 years ago

      I want this for when climate collapse destroys modern civilization and the survivors are left to rebuild society without the benefit of global supply chains or information infrastructure.

        • PorkRollWobbly@lemmy.ml
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          2 years ago

          I’ve put a bit of thought into this and I feel that even if you could bring every blueprint for every technology ever made onto a computer with 10 backups, you would still need to be extremely lucky on whether you get people skilled enough to recreate those technologies.

          • Liz
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            2 years ago

            You’d need the social skills to demonstrate technological improvements (say, a better axe) without causing everyone to freak out and call you a demon. You’d also have to keep your phones and charging devices secret until after you’ve recruited a few technophiles because otherwise someone is going to break them accidentally when they confiscate them for one reason or another.

            Basically you need to recruit a few smart people who can be trusted and get them on your side. You might even want to funnel all your “inventions” through them to keep the heat off you, and this is assuming you end up in a culture that would even value technological advancement.

            • Intralexical@lemmy.world
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              2 years ago

              this is assuming you end up in a culture that would even value technological advancement.

              People value their friends and family not dying, and the murdering raiders from neighbouring tribes being kept at bay. And people that don’t value that don’t tend to last very long.

              You’d need the social skills to demonstrate technological improvements (say, a better axe) without causing everyone to freak out and call you a demon.

              …Starting with an axe would be nice. The lumberfolk would appreciate it, surely. But then what happens when the old blacksmith blames your witchcraft for the crops failing next year, or for the village chief’s child falling ill? So maybe teach the blacksmiths too, so they also benefit from you— I’m sure they’ll love having some upstart come in and tell them how to do their jobs.

              You’re an outsider, no matter what, and you’re never going to completely look like them or sound like them or act like them— Can we really think that any amount of social skills will be enough to keep you safe, when they might just be determined to hate you for what you are?

              Maybe start with a combination of military and medical technology. Show them a crude crossbow; when they see the next raid of Goths or Aztecs or Mongols or Vikings or Peloponnesians or whomever being repelled before they even reach the gates, they’ll come to appreciate it sooner or later… Their enemies are against their gods, so if you helped defend them from their enemies, you must be sent by their gods. Disgustingly, hating the same out-group is a great way to keep yourself safe in any given in-group, whether at work or at war. Medicine’s probably trickier, because if you fail to save somebody then some people will probably blame you for their death. But if you make it clear that you can’t stop fate from running its course, and you start with some basic stuff, they’ll probably come to appreciate that their friends aren’t dying as much from infections anymore too.

              Fear of death has always been sadly the strongest motivator for embracing technological change. Modern aviation, computing, and nuclear science all came after WWII; and “anti-vax” movements only thrive in countries that have already essentially eradicated the concerned diseases. It’ll be harder for them to crucify somebody whom they can see is standing between them and death.

      • Gork@lemm.ee
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        2 years ago

        I don’t know why they put just one zero in front of years. That just makes the clock slightly longer, and it’s still insignificant in the grand scheme of things.

        02023 in years only is good until 99999, then you’d need to prepend another zero.

        • Intralexical@lemmy.world
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          2 years ago

          It’s a constant symbolic reminder, and still a 10X scope increase.

          If you want to be pedantic about making “the clock slightly longer”, you might as well say “I don’t see why they don’t write their dates out in base 62. Then they could make the clock shorter by writing wD instead of 2023”. The point is that everyone who sees “02023” can have a bit of an “oh shit” moment where they instantly understand what it means.

    • WhiskyTangoFoxtrot@lemmy.world
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      2 years ago

      We could send them to the end of the galaxy to compile an encyclopedia of all human knowledge but they’d secretly be there to start the next iteration of civilization through the foolproof strategy of not doing much and just letting the pre-calculated history take its course.

    • Cyclist@lemmy.world
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      2 years ago

      There’s a couple of books that do this: How to Invent Everything, and How Rebuild Civilization.

        • Obi@sopuli.xyz
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          2 years ago

          Alright it’s decided, you’re the guy we’re sending back to teach Jesus how to build gaming PCs from scratch.

      • dx1@lemmy.world
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        2 years ago

        Expose molten ferrous metal to … a magnet.

        Welp…

        Magnets are created by running an electrical current through a material, so there is no need to have a ‘first magnet’. This is happening ‘naturally’ in the earth core, in the sun, and in other stars. (https://physics.stackexchange.com/questions/565245/how-was-the-first-magnet-made)

        So you need to look around and find some magic rocks.

        Natural magnets, called “lodestones”, were found in iron ores (magnetite) from the ancient region of Magnesia, hence the name “Magnet”. (https://physics.stackexchange.com/questions/615500/how-did-magnets-first-come-about)

        Maybe the sword with the stone was just a big lodestone with a sword sized hole in it. Just throwing that out there.

        And one more cool fact…

        Based on his discovery of an Olmec artifact (a shaped and grooved magnetic bar) in North America, astronomer John Carlson suggests that lodestone may have been used by the Olmec more than a thousand years prior to the Chinese discovery.[23] Carlson speculates that the Olmecs, for astrological or geomantic purposes, used similar artifacts as a directional device, or to orient their temples, the dwellings of the living, or the interments of the dead.[23] Detailed analysis of the Olmec artifact revealed that the “bar” was composed of hematite with titanium lamellae of Fe2–xTixO3 that accounted for the anomalous remanent magnetism of the artifact.[24] (https://en.wikipedia.org/wiki/Lodestone)

  • db2@sopuli.xyz
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    2 years ago

    Electricity is easy to make though… a couple magnets and some copper wire.

          • tallwookie@lemmy.world
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            2 years ago

            probably go with a hand-crank zapper or something. it’s tricky to do much without resistors and capacitors.

          • Double_A@discuss.tchncs.de
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            2 years ago

            Plating a metal object with a different metal would probably be the simplest, impressive thing. Or just heating a thin wire?

          • Damage@slrpnk.net
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            2 years ago

            If you can make a generator you can make a motor, just connect them together and have one move when you spin the other

            • Koala@feddit.de
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              2 years ago

              The could do the same with a belt, go away with your flash nonsense youngling

            • redcalcium@lemmy.institute
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              2 years ago

              Don’t forget it’ll need to be covered with an insulator, else your coils would short circuit and not producing any current. So you’ll need some chemistry to produce insulator thin enough to create your generator.

            • drathvedro@lemm.ee
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              2 years ago

              It is, but the ancient method is tedious as fuck. It was basically just pulling a piece through dozen of gradually smaller holes, by hand. I dont think you could do one pass extrusion without all of the precision machinery needed to manufacture such machine. But I aint a blacksmith, I just saw the process in some documentary a while ago.

              • QuinceDaPence@kbin.social
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                2 years ago

                Big-ass piece of cast iron with a little hole in it.

                If you can convince them you know the end product I’m sure the king can point you to his metal workers and in a lot of cases come up with a solution.

                Also, it’s labor intensive but I think you can beat it into wire or use some other methods.

                If the king says to the blacksmith “make that copper long ans skinny” he can probably make it happen.

            • IWantToFuckSpez@kbin.social
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              2 years ago

              How would you buy copper with no money? It’s not like you can exchange your modern money to their currency. So first you need to find a job and any good paying job is probably protected by guilds and you don’t even speak their language so good luck finding a mentor who will offer an apprenticeship. You will be a peasant. Nothing more than a subsistence farmer who has to rent the land and give half his yield to the local lord. Hunting? Killing anything bigger than a fowl will get you in trouble since big game is property of the lord.

              Also copper ore doesn’t lie freely on the ground. You need to mine for that shit and be lucky that there is a source in the vicinity, since you can’t travel very far. Can’t buy a horse with no money.

              And if you found a source you need to convince an entire community to help you mine for copper. You sure as hell can’t do it alone. Good luck convincing them when everyone is busy tending their crops to prepare for the winter. And you don’t even speak their language.

              • BastingChemina@slrpnk.net
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                2 years ago

                I imagine that the best way to make money would be if you manage to build a rm rudimentary still.

                I feel like moonshine would be relatively easy to do and a great way to make profit of no one kills you before.

                Distilled alcohol is quite rudimentary to produce but only appeared late in history. Plus it is great for leisure application, food conservation or medicine.

              • tallwookie@lemmy.world
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                2 years ago

                i guess that if we’re going to go the fantasy route, then I’d just steal everything I needed - the strong do as they please and the weak submit, after all. violence is the only language I’d need to speak

              • Intralexical@lemmy.world
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                2 years ago

                Good luck convincing them when everyone is busy tending their crops to prepare for the winter.

                Just sprinkle some bird poop or bat guano or whatever other nitrogen and phosphorus-rich gunk onto it when they aren’t looking.

      • pinkdrunkenelephants@sopuli.xyz
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        2 years ago

        You can literally mine lodestone and copper. Ancient people have mined those two things since antiquity. Where do you think it comes from now? Fairies?

            • cogman@lemmy.world
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              2 years ago

              What do you think copper ore looks like? What tools would you use?

              Ancient mining was a punishment, generally a death sentence. It’s hard work often overseen by a slave master.

              Copper ore isn’t concentrated copper either a lot of ore goes into a little copper. There’s a reason only the really wealthy had copper items.

          • Tavarin@lemmy.ca
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            2 years ago

            Bring a live translation device, and program it with whatever the expected language is. That alone would be magic to them. And you don;t need to go to a copper mine, there were markets for processed copper. Pulling it into wire is just a case of roughly forming it into a cylinder, then pulling that cylinder through successively smaller holes. A local smith could help you with that.

      • db2@sopuli.xyz
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        2 years ago

        You can induce voltage on more than just copper you know. Or maybe you don’t know. You probably don’t know.

        • cogman@lemmy.world
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          2 years ago

          Ever wonder why it goes bronze age and then iron age? It’s because it’s a minor miracle humanity discovered how to smelt iron. Iron requires temperatures higher than you can achieve with just wood. Iron absorbs carbon and sulfur making it worthless (in the wrong mixtures).

          The process is complex and resource intensive.

          Assuming a bronze age civilization, copper or tin is the best you can hope for. Finding a magnet is going to be difficult because there’s not really ferromagnetic materials available. In the modern era the most common material is iron.

  • atlasraven31@lemm.ee
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    2 years ago

    Me: The opposite of B, the opposite of B, plus or minus a square root…

    Them: What does that mean?

    Me: I have no idea.

    • pinkdrunkenelephants@sopuli.xyz
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      2 years ago

      X equals negative b, plus or minus the square root, of b squared minus 4 a c, all over 2 a

      Thanks a lot. Now that song is stuck in my head.

  • 🇰 🌀 🇱 🇦 🇳 🇦 🇰 🇮 🏆@yiffit.net
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    2 years ago

    I’d actually be able to teach them how to make it if they have copper and magnets, since I know how to make a simple generator. They’d be SOL on how to use it though, because I don’t know how to make something entirely from raw materials that would require electricity. Which means they also wouldn’t know I am creating it with the generator… 🤔 Uh… Shit.

    This is actually kinda wild to think about and I hadn’t considered it before. Making electricity is easy! Using it is actually more complicated.

  • CthulhuOnIce@sh.itjust.works
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    2 years ago

    I feel like you could still give science a head start by giving them rough ideas of how things work, like penicillin and steam power and whatnot

    Even if you don’t know all the ins and puts you can give them something to go off of to develop the technology faster

    • Intralexical@lemmy.world
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      2 years ago

      “Science” ≠ Technology!

      If you give them the technology without giving them stuff like empiricism and cultural acceptance of critical thinking, they’ll just worship it like any other faith, and stagnate for the next thousand years.

      Inversely, you don’t even need to give them too much technology, because if you just give them stuff like evidence-based medicine, the printing press, rigorous experimentation and reproducibility, and a couple institutes dedicated to the craft, plus a couple starting points, then they’ll figure it on their own soon enough (assuming an overall stable civilization).

      • frezik
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        2 years ago

        Most likely, people would consider you to be another wacko shouting at passersby.

        Or even more likely, you drink some stanky water that your body doesn’t know how to deal with and die within the first week.

  • IWantToFuckSpez@kbin.social
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    2 years ago

    You could probably make explosives from manure. Use that to conquer a small community and make yourself the leader. And start a rebellion against the local lord and become the king. Then you have the resources and slaves to find copper and magnets and shit. Problem is the massive language barrier. Their language is just gibberish to us and vice versa.