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Comments

• gandalf_der_12te@discuss.tchncs.de ⁨5⁩ ⁨months⁩ ago

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  • db2@lemmy.world ⁨5⁩ ⁨months⁩ ago

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• azureskypirate@lemmy.zip ⁨5⁩ ⁨months⁩ ago

  Time travel to Earth’s past would be cool to study history. But how to not accidentally ruin our timeline?

  I think the real progress is to be made in space. Send a probe to a solar system 50 LY away but back in time to arrive the same day you sent it. It can travel really slow too, because time isn’t a concern.

  If there is a habitable planet, send settlers there at the earliest time in history possible. Settlers can be robots that just build infrastructure and plant stuff for 10k years. Then go yourself.

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• bss03@infosec.pub ⁨5⁩ ⁨months⁩ ago

  Time travel is exclusively a cis white guy fantasy: www.youtube.com/watch?v=H-WHAISI02w (Anyone else would be shunned and probably killed as some sort of witch/demon.)

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  • Swedneck@discuss.tchncs.de ⁨5⁩ ⁨months⁩ ago

    there are so so so many things utterly wrong about this, primarily the fact that “white people” (a fundamentally racist concept) weren’t particularly advanced until very very recently.

    You know where the big advanced civlizations were, historically? The middle east TWICE, egypt, FUCKING CHINA, and the Mediterranean.

    Civilization started in modern day Iraq, somehow i think they’d be more likely to react to a light-skinned person than someone with brown skin 🤔

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  • mhague@lemmy.world ⁨5⁩ ⁨months⁩ ago

    This is kinda funny. It’s like “Jesus was a white guy” mixed with “cis whites need to check their privilege”

    The idea that you could go back in time as a nutritionally giant white guy speaking gibberish and fit in because white is a bit anti history.

    If we’re sending people back in time it’s going to be Dwayne Johnson.

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  • db2@lemmy.world ⁨5⁩ ⁨months⁩ ago

    What about wanting to fast forward right past the stupid ages?

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• Lushed_Lungfish@lemmy.ca ⁨6⁩ ⁨months⁩ ago

  How do people in this day and age not know how electricity works? That’s like grade 3 science…

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  • meliaesc@lemmy.world ⁨5⁩ ⁨months⁩ ago

    Without any research, please build a battery right now.

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    • Lushed_Lungfish@lemmy.ca ⁨5⁩ ⁨months⁩ ago

      Sure, spare change, coin roll, vinegar.

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  • ArchmageAzor@lemmy.world ⁨5⁩ ⁨months⁩ ago

    Well, most people here are American.

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  • RememberTheApollo_@lemmy.world ⁨5⁩ ⁨months⁩ ago

    Go back to a time where material quality and manufacturing processes couldn’t produce consistent quality and quantity of things needed to build a basic generator.

    Where will you get the permanent magnet, for instance? What will you demonstrate once you’ve assembled a basic generator? Going to make a light bulb? How about a voltage regulator? Think about the manufacturing processes involved in that, like pulling a vacuum for the bulb? I mean, it’s one thing to know that spinning a magnet in a coil of wire makes electricity, it’s an entirely different thing to actually build such a thing correctly and to convince ancient peoples to even help you and not kill you for witchcraft or something.

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    • Lushed_Lungfish@lemmy.ca ⁨5⁩ ⁨months⁩ ago

      Well, a simple thing to do once you have a coil and magnet is to hook it up to another coil.and magnet some distance away. You can then transfer the spinning action. Something simple to set up would be a fan.

      As for not killing me for witchcraft, plenty of folks want to kill me now for much more tangible reasons, so there really isn’t much to gain here.

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    • absentbird@lemmy.world ⁨5⁩ ⁨months⁩ ago

      Copper and lodestone were some of the first materials refined from ores. You can also create a permanent magnet by getting a piece of iron struck by lightning.

      Once you have copper and a magnet you can use the electricity to make additional magnets out of iron.

      It’s also possible to make a magnet with a compass, a piece of iron, and a striking hammer:

      position the metal facing north, strike the southern end repeatedly

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  • MBech@feddit.dk ⁨6⁩ ⁨months⁩ ago

    Most people tend to forget stuff that isn’t important to them in their daily lives.

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• Kolanaki@pawb.social ⁨6⁩ ⁨months⁩ ago

  I could make an electric generator/motor but I couldn’t tell you how it works beyond “you spin copper around a magnet and magic happens.” 🤷‍♂️

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• skisnow@lemmy.ca ⁨6⁩ ⁨months⁩ ago

  Me at the 19thC Royal Society, all cocky like: Matter is energy, E=mc^2

  Michael Faraday: interesting, how would I go about proving that?

  Me: no fucking clue. Something to do with either spaceships or massive bombs?

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• Jankatarch@lemmy.world ⁨6⁩ ⁨months⁩ ago

  Y’all don’t give yourselves near enough credit for what sounds “common sense” to you.

  It would look more like this.

  (Click image if resolution too low)
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  • skisnow@lemmy.ca ⁨6⁩ ⁨months⁩ ago

    The reaction in that picture is also bang-on though, because Semmelweis got a huge amount of pushback from the medical community at the time, who took offense at the apparent accusation that they were so dirty they were killing their own patients.

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• Gorilladrums@lemmy.world ⁨6⁩ ⁨months⁩ ago

  I’m pretty sure there was research done that showed that people who are hypothetically transported back in time, won’t be able to make any meaningful contributions to the era they go to. They will just end up integrating in that the society of that era.

  Basically if you go back in time to medieval Europe, you could introduce something like paperclips to society, but you won’t be able to introduce things like computers even if you know how they work and how to use them.

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  • DragonTypeWyvern@midwest.social ⁨6⁩ ⁨months⁩ ago

    For a really easy demonstration of why, look at videos of WW2 era production machinery.

    They are often amazingly, fascinatingly complex masterpieces of engineering that are still the result of generations of combined mechanical effort and discovery, and what we have now is as far above them as they are above a printing press. And building them required complex tools built by other, slightly less complex tools, you’re not going right from anvil and hammer to a T-model production line.

    You might be able to start the scientific revolution early and introduce key concepts but you do not know how to build even a 19th century cannery, much less a computer, and the team of engineers it would take to do it don’t exist either.

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• Atomic@sh.itjust.works ⁨6⁩ ⁨months⁩ ago

  Electricity works by moving electrons from point a to point b.

  There are different ways of acomplishing this. Easiest is to have an electrolyte between zinc and copper. Kids use a potato for their science class. Volta used cloth soaked in saltwater.

  Which is also why call it “Volt” and “Voltage”

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• Axolotl_cpp@feddit.it ⁨6⁩ ⁨months⁩ ago

  Well i actually know how to produce eletricity so…wait- i don’t know how to get magnets and copper

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  • Swedneck@discuss.tchncs.de ⁨5⁩ ⁨months⁩ ago

    lodestone is a natural material, use that to build a shitty generator which powers a much more powerful electromagnet which you use to magnetize better permanent magnets, then use them to make better generators. bish bash bosh

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  • yermaw@sh.itjust.works ⁨6⁩ ⁨months⁩ ago

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    • nialv7@lemmy.world ⁨6⁩ ⁨months⁩ ago

      Quantum electrodynamics, mostly.

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• General_Effort@lemmy.world ⁨6⁩ ⁨months⁩ ago

  Huh. At first, I thought that was about rubbing the kitty with some amber.

  “Thales of Miletus, writing at around 600 BC, noted that rubbing fur on various substances such as amber would cause them to attract specks of dust and other light objects.” (Yes, that Thales.) It is still, or again, a popular demonstration, though we use plastic instead of amber. Amber in Ancient Greek is “elektron”.

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• gnu@lemmy.zip ⁨6⁩ ⁨months⁩ ago

  Electricity is a hard ask to even attempt to do in ancient times. Luckily there’s a variety of other simpler things to establish yourself as a genius inventor - strirrups, wheelbarrows, the idea of a crank handle, and how to use triangular bracing to make a strong truss would be good options.

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  • Jankatarch@lemmy.world ⁨6⁩ ⁨months⁩ ago

    Washing hands before performing another surgery when you just finished patching some soldier’s infectious wounds.

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    • gnu@lemmy.zip ⁨6⁩ ⁨months⁩ ago

      That’s one with big potential but not one to lead off with, best to wait until you’ve ‘invented’ a few obvious game changers and established your philosophic credentials before attempting to introduce basic medical hygiene…

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  • general_kitten@sopuli.xyz ⁨6⁩ ⁨months⁩ ago

    i would say metallurgy was advanced enough for some very simple generators using a lodestone and copper wire, that could then at least used as a heater or establish electrolysis to advance chemistry quite a bit, but applications would likely stay niche or just a curiosity, carbon arc lamps would maybe be possible but hard.

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• captain_aggravated@sh.itjust.works ⁨6⁩ ⁨months⁩ ago

  I actually read A Connecticut Yankee in King Arthur’s Court recently. It’s one of those things where I knew the whole story going in because pop culture had remade it several times for both children and adults. I got Star Wars the exact same way. But I recently listened through the original on LibreVox.

  Twain apparently wrote it to poke fun at a friend of his who wrote stories about noble knights errant, which is why he creates an ancient people who are perfectly ignorant and perfectly gullible, that stories of “rescuing maidens from a giant” were extremely embellished stories of buying pigs back.

  Then there’s the entire aspect of a modern engineer teaching a historical people new technology. Twain makes a BIG deal of “Arkansas journalism” and convincing knights to carry advertising billboards with them which would have been very modern and American to a 19th century man. But also he manages to set up a printing press in a land that doesn’t understand pulp paper, a telephone network in a land that doesn’t understand electricity…in apparently a couple years?

  Me? I think I’m an above average candidate for this scenario, I’d die in a boiler explosion attempting to build a steam engine.

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• QuinnyCoded@sh.itjust.works ⁨6⁩ ⁨months⁩ ago

  imagine showing them the quadratic equation and they’re just like “why does this matter” and just being like “idk I barely passed”

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  • DragonTypeWyvern@midwest.social ⁨6⁩ ⁨months⁩ ago

    The Babylonians had them figured out so you’re not going to blow anyone’s mind but you might convince a priest you’d make a good scribe

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• rmuk@feddit.uk ⁨6⁩ ⁨months⁩ ago

  That’s a joke-turned-plot element from one of the Hitchhiker’s Guide books. The protagonist, a human everyman stranded with a primitive culture on a distant world realises he has no idea how electricity, steam engines, medicine, etc works but he becomes a respected member of their community by making sandwiches.

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  • General_Effort@lemmy.world ⁨6⁩ ⁨months⁩ ago

    Mostly Harmless. I didn’t like that one. It was somehow bleak and left me worrying that DNA was in a bad place when he wrote it. I’m going to be a heretic and say that I did like how Colfer continued the series.

    In a Discworld novel, an off-hand remark mentions Ponder Stibbons wanting to build a Van-De-Graff-generator by tying cats to a wheel. I wish I could remember which book it was.

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    • agamemnonymous@sh.itjust.works ⁨6⁩ ⁨months⁩ ago

      I kinda liked the bleak. It felt like an ending. Drove home a fairly central theme

      Never read Colfer’s continuation, I read some of the Artemis Fowl books when I was younger and I didn’t really expect him to match Adams’ particular style.

      I did listen to the radio adaptation though, and if it’s true to the source then it was… okay? I’m not sure it added much.

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• Donkter@lemmy.world ⁨6⁩ ⁨months⁩ ago

  Yeah, you can’t just lay down electricity, especially not practical electricity it requires a ton of diverse knowledge from many different studies. What I would do is give them the concept of using steam to power to spin wheels or create an engine. Then use gear ratios to show them how to scale it up. Idk if they had found neodymium magnets back then, but teach them how to use them to heat iron by spinning them on the end of a steam engine and you’re starting to cook with electricity.

  Again, getting to electricity from there is still a whole fucking chore. But hopefully you could rely on science to advance way faster from your advances than if you weren’t there.

  Actually, the most important thing you could give the greeks is the concept of the modern scientific method. That shit was invented so late and just skyrocketed science (literally) the moment it was refined.

  Just write a book about everything you remember about a null hypothesis, randomized blind trials, control experiments, variable control etc. if you can squeeze any bit of statistics out of your brain, even if it’s just making a graph, you probably advance the world by thousands of years.

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  • bobo1900@startrek.website ⁨6⁩ ⁨months⁩ ago

    They definitely didn’t have neodinium magnets, as neodinium being a lantanide metal was discovered only recently (1700s or 1800s) and requires extremely advanced (for the time) metallurgy and chemistry to extract from minerals.

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  • Olhonestjim@lemmy.world ⁨6⁩ ⁨months⁩ ago

    Probably 2 of the biggest reasons the Greeks failed to become a technological civilization are that their various feuding city-states never united in cooperation, but primarily that they were super into slavery for all their labor. They didn’t want to make slaves work less, then they would have time and energy to rebel and slaughter their masters. No, scientific advancement was simply for curiosity’s sake, not practical applications.

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• LemmyKnowsBest@lemmy.world ⁨6⁩ ⁨months⁩ ago

  Uhh… I’ll give it a try. Let’s first start by digging everywhere looking for this natural metal called “copper.” We’re gonna need that for conductivity. Then…um… I honestly don’t know what happens after that.

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• frog@feddit.uk ⁨6⁩ ⁨months⁩ ago

  During a get together someone asked if you could go back in time, what one item would you take with you? My cousin said his cell phone so he could have unlimited knowledge with him. I was called an asshole for telling him it wouldn’t work unless he downloaded it all on his phone and asking how would he charge it.

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  • ysjet@lemmy.world ⁨6⁩ ⁨months⁩ ago

    No idea how well it would actually work, but having www.howtoinventeverything.com as a reference manual would probably not be a terrible idea.

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    • Swedneck@discuss.tchncs.de ⁨5⁩ ⁨months⁩ ago

      wikipedia without images is like 100gb, get rid of all the utterly useless things like art and sports and it’s more like 40gb

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  • rmuk@feddit.uk ⁨6⁩ ⁨months⁩ ago

    A phone would be a bit much, but an ereader with a solar charger loaded up with Wikipedia and a chunk of Project Gutenberg would probably last with a bit of care.

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    • howrar@lemmy.ca ⁨6⁩ ⁨months⁩ ago

      That’s two items. The second one costs extra.

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    • Coopr8@kbin.earth ⁨6⁩ ⁨months⁩ ago

      This is a good reminder, I need to upload my Kiwix backup to my eReader. I keep a Wikipedia essentials download, survival and medical encyclopedias, and a bunch of "from the ground up" engineering resources backed up offline.

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• outhouseperilous@lemmy.dbzer0.com ⁨6⁩ ⁨months⁩ ago

  I have very few practical skills in the modern day.

  But if you need to set up a society from scratch, I can get you electricity, steel, solid agriculture, and a handful of life saving medications depending on climate.

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  • Coopr8@kbin.earth ⁨6⁩ ⁨months⁩ ago

    Have you actually smelted and alloyed useable steel from ores before?

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    • outhouseperilous@lemmy.dbzer0.com ⁨6⁩ ⁨months⁩ ago

      Not from ores, and not on my own, but if I spent a minute I could remember how to go from ‘chopped dowm this tree with a rock’ to that.

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  • tetris11@feddit.uk ⁨6⁩ ⁨months⁩ ago

    wait what, that’s incredible. Dibs on you when it comes to picking time travel buddies.

    I offer: handy with a screwdriver and knows how to make good scary voices when telling ghost stories around a campfire.

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    • outhouseperilous@lemmy.dbzer0.com ⁨6⁩ ⁨months⁩ ago

      I will be burned as a witch within five minutes if im not burned for being such an insufferable bitch within as many seconds.

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