/diy/ - Do It Yourself

[Anonymous No.2693543]

So, let's say that you were teleported to the medieval times.

What would be the best and considerably easy thing/craft to explain to them and teach them that could potentially really boost up their technology level (think bang for buck)?

What could (You) explain to them?

also yes, pic rel is ai generated

[Anonymous No.2693545]

>>2693543
circular saw.

[Anonymous No.2693547]

>>2693545
You would need to explain to them how to make electricity and efficient engines and also tons of other stuff from scratch which they probably couldn't grasp.

[Anonymous No.2693552]

>>2693543
medieval was a long ass era, specify

[Anonymous No.2693554]

>>2693543
Cavity walls for insulation would do a lot. Most places were absolutely dank and that killed a lot of kids back in Western Europe.
Doesn't require any technology they didn't have back then.

[Anonymous No.2693560]

>>2693543
>>2693547
Anything that doesn't require electricity is stuff they already knew how to make. Medieval craftsmen were probably smarter than 90% of people today

[Anonymous No.2693562]

>>2693560
Maybe the only exception would be firearms manufacturing

[Anonymous No.2693589]

>>2693547
>You would need to explain to them how to make electricity
you are burned at the stake for either being a witch, or for trying to be god.

[Anonymous No.2693600]

>>2693543
>What would be the best and considerably easy thing/craft to explain to them and teach them that could potentially really boost up their technology level

this is way over simplified
medieval time period spans a large amount of time. 500 AD to 1500 AD
are we talking the Early, High, or Late Middle Ages.
here are just some of the tech they had during the 1000 year period.
Horseshoes
gunpowder
windmills
spectacles
mechanical clocks
greatly improved water mills
Gothic architecture
medieval castles
three-field crop rotation
sawmills both for timber and stone
turnable mills
Water-power was also widely used in mining for raising ore from shafts, crushing ore, and even powering bellows.
multi-masted ships
sternpost-mounted rudder
skeleton-first hull construction
dry compass
the Jacob's staff
astrolabe
mechanical printing
Heavy Plough
wine press
aquaducts
Central heating through underfloor channels
Chimney
Segmental arch bridge
Treadwheel crane
Floating crane
mast crane
wheel barrow
oil paint
hour glass
compund crank
blast furnace
ship mill
paper mill
water hammer
movable type printing
spinning wheel
grindstones
liquor
magnets
mirrors
every type of armor

[Anonymous No.2693603]

Public toilets, basic sewerage and basic plumbing. The ideal would be to teach people basic hygiene, such as washing their hands after entering the house. In general, it would also be possible to teach people to produce low quality flat glass.

[Anonymous No.2693604]

>>2693543
Sanitation and vaccines for all communities. Don't drink dirty water, wash your hands, take sauna once in a while, washing fruit and veg, how to desinsect clothes.

And if we're talking about townsmen, I'd teach them how to make steam engines so they could make steamboats mainly for extremely quick river travel. They'd figure out the rest of uses themselves(like threshing, milling, pumping, powering a sawmill, blowing air into furnaces).

[Anonymous No.2693606]

>>2693603
they already had that stuff, but not everyone had it.

[Anonymous No.2693607]

>>2693603
>>2693604
People in the Middle Ages have acquired something of a bad reputation when it comes to cleanliness, especially the peasantry. However, despite the general lack of running water and other modern amenities, there were common expectations of personal hygiene such as regularly washing from a basin, especially the hands before and after eating which was regarded as good etiquette in a period when cutlery was still a rarity for most people. The better off had the possibility of more frequent baths and castles, manors, monasteries, and cities offered their residents better toilets with better drainage, and sometimes even had running water using the ancient combination of cisterns and gravity. Naturally, standards of hygiene varied over time and place, and even, of course, between individuals.

[Anonymous No.2693608]

>>2693603
Plumbing is be way too expensive since in it's basic form you have to dig in a lot of valuable metal. A simple water supply system akin to roman one but pumping water from a deep well would be extremely useful tho.

[Anonymous No.2693611]

>>2693543
How to clean water.

[Anonymous No.2693616]

>>2693603
>>2693604
there were certain jobs that required good hygiene and being a milk maid was one. milk maids were always women, they had very strict rules about cleanliness. they may not have understood why they needed to wash their hands or thoroughly clean things with hot soapy water, but they knew if they did that people were less likely to get sick from their products.

same with beer makers they didn't know exactly why they boiled the mash, but they knew if they didn't the beer would go bad quickly or be acidic, or moldy.

[Anonymous No.2693644]

>>2693543
There are a couple of good books on this:
1. Deathworld 2 by Harry Harrison (not as corny as it sounds - he was a soldier and engineer).
2. Pic related.

The reality is that you wouldn't be able to make anything. You aren't going to find any magnets or identify the 3 ingredients needed for black powder.

>>2693600
All of this is either not doable or requires scale which would require you to be king before you could implement it.

[Anonymous No.2693645]

>>2693644
https://worldbuilding.stackexchange.com/questions/13030/what-could-an-average-modern-human-achieve-in-medieval-times

Also see ^

[Anonymous No.2693653]

>>2693644
>You aren't going to find any magnets or identify the 3 ingredients needed for black powder.
see >>2693600

[Anonymous No.2693655]

>>2693644
>All of this is either not doable or requires scale which would require you to be king before you could implement it.
no dude those were ALL things that they DID have during the medieval period. you did not read it.

[Anonymous No.2693659]

>>2693644
>dentify the 3 ingredients needed for black powder.
charcoal, yellow flammable mineral and evaporated rotten piss soup? The issue with gunpowder is that it doesn't bring wealth.

[Anonymous No.2693660]

>>2693543
ITT people who haven't looked up how long the medieval period is, or what tech they did have, and instead have just gone with shit they made up or got from movies and TV.

[Anonymous No.2693661]

I'd teach them about the grapefruit technique.

[Anonymous No.2693665]

>>2693543
1911A1 and .45ACP

[Anonymous No.2693668]

>>2693659
1. In abundance, so you are fine there. They made charcoal briquets.
2. You know where to find sulfur? Going to get a guide to the local volcano?
3. Rotten piss soup - do you really think you will get clean potassium nitrate from that without specialized knowledge?

[Anonymous No.2693670]

>>2693668
they already had gunpowder

[Anonymous No.2693675]

>>2693670
So back to electricity? Where do you get magnets?

[Anonymous No.2693678]

>>2693543
Pasteurisation, probably. And if it was early enough, alcohol distillation. I would probably skip the gunpowder and move straight to molotov cocktails. Also cannabis and fossil fuels if they were available.

I have no idea how smart the smartest guy would be in terms of todays science, but I could demonstrate the basics of linear algebra or the dynamics involved in a catapult with trajectory predictions.

> the tech they had
They didn’t ‘have’ the tech like today. Even major breakthroughs it could take decades or centuries before it they became common knowledge because there was no Google.

[Anonymous No.2693682]

>>2693678
> straight to molotov cocktails
With fucking what mass-produced glass and diesel? Gonna sprinkle in your sperm as styrofoam?

>the dynamics involved in a catapult with trajectory predictions.
Gonna calculate air resistance on your dick?

[Anonymous No.2693692]

Humans in lord of the rings could have reverse engineered sarumans bombs and launch them from trebuchets from minas tirith
Half the fucking orc army would get rekt
The fuck nazgul gon do

[Anonymous No.2693694]

>>2693560
This
All they needed was standardisation and mass production

[Anonymous No.2693696]

>>2693682
> With fucking what mass-produced glass
The romans had glass, even vials, flasks and perfume bottles.

> and diesel?
You’re thinking of napalm

> Gonna calculate air resistance on your dick?
I might. The few experiments required are trivial, we learn them in middle school. You’d be in your writing room writing snarky responses with a feather while I’d be launching precision strikes of glass spheres filled with ethanol at your castle

[Anonymous No.2693699]

Distilled spirits

[Anonymous No.2693707]

>>2693547
You could probably make a big, hand cranked one attached to an inertia wheel or something, no electricity required.

[Anonymous No.2693714]

>>2693607
Can you tell me some other cool things please.

[Anonymous No.2693716]

>>2693543
I would try to make an early diesel engine powered by cooking oil. So I can Power more and bigger lathes.
We will have trains in no time boys!!

[Anonymous No.2693719]

Do not go back to anywhere near 930ad or you will be caught in the devastation of a massive cataclysm that reset european civilisatin back.
also the history you were taught in school won't make any sense

[Anonymous No.2693736]

>>2693675
they had them

[Anonymous No.2693738]

>>2693675
>Where do you get magnets?
Other than lodestones?
Take an iron bar, align it with the earth's field, and hit it with a hammer a bunch. It'll magnetize.
The real hard part is insulated copper wire for coiling. Faraday invented the silk insulation industry.
The problem with DC motors (and therefore generators) in the middle ages is that they're useless: because there is no motive power. Electricity is ultimately a vey clever belt drive. Turn this shaft here and that shaft turns way over there. Why what does the turning?
In the middle ages, power was three things: water, wind, or beast. That's it. You brought your mill to the power and not the power to the mill. (Unless you were using beast, wherein you literally walked your power to the work.)

[Anonymous No.2693743]

Interchangeable parts. It's basically the industrial revolution without steam engines. It would fly in the face of artisan guilds which prided themselves on technique and master works. If they could be convinced to invest into jigs and forms, it would really change things.

[Anonymous No.2693747]

>>2693738
>because there is no motive power.
they had water wheels.

[Anonymous No.2693751]

>>2693743
>interchangeable parts before precision instruments
Dumbfuck.

[Anonymous No.2693758]

Another anon already mentioned hygiene, so I'll suggest electricity.
All you need is some copper, magnets, acid, lead, zinc and even the most remedial of /diy/ autists can nig rig a battery, light filament, generator, and motor.
History has shown all you need to do is provide a proof of concept and smarter people will run with the concept.

[Anonymous No.2693770]

>>2693696
>You’d be in your writing room writing snarky responses with a feather while I’d be launching precision strikes of glass spheres filled with ethanol at your castle
Heh, at least you tied it all together, props.

>>2693738
Usual argument is radio so I could know these fucks are coming to my castle, and tell my commandos to go raid his after all his shit leaves with a bunch of fancy glass bottles.

[Anonymous No.2693854]

>>2693716
I wish you good luck with forced cylinder purging!

[Anonymous No.2693880]

>>2693604
>Sanitation and vaccines for all communities. Don't drink dirty water, wash your hands, take sauna once in a while, washing fruit and veg, how to desinsect clothes.
That's positively unChristian. BURN THE WITCH!

(and I'm not even joking, you'd fry m8)

[Anonymous No.2693882]

>>2693751
Just have loose tolerances whenever possible.

[Anonymous No.2693883]

>>2693682
>> straight to molotov cocktails
>With fucking what mass-produced glass and diesel? Gonna sprinkle in your sperm as styrofoam?
How dumb are you? Have you never heard of castles dumping "boiling oil" onto besiegers?

They literally already had the equivalent of "Molotov cocktails" -- they'd fill an animal skin balloon with oil rendered from an animal, and set it on fire and fling it out of a trebuchet.

And if you want to talk napalm, blood can be used as the thickening agent; styrofoam isn't mandatory. There are a lot of others, but blood would be readily available throughout history.

[Anonymous No.2693885]

>>2693543
Morse code and heliographs. IIRC even though ancient Greece knew about reflecting sunlight off a mirror, the technology was lost for centuries.

Roman cement is another lost tech, for certain. IIRC they didn't figure out how the Romans did it until some time in the late 1700s. I'd have to look up how to do it before I left CURRENT_YEAR, though.

[Anonymous No.2693891]

Explaining crop rotation, use of fertilizers, and irrigation.
Expanding the food supply would be the main priority. Once you reduce the amount of people required to farm in order to feed everyone, you can free up labor for the more fun stuff.

[Anonymous No.2693952]

>>2693543
Stick framing, insulation, water proofing

[Anonymous No.2693969]

>>2693747
>they had water wheels
... Why, yes. They did. I believe I pointed that out ...
>>2693738
>In the middle ages, power was three things: water, wind, or beast.

[Anonymous No.2693991]

>>2693543
i would actively try to halt the progress of technology

[Anonymous No.2693993]

>>2693543
germ theory, sewers, alcohol distillation for sanitizing hands and wounds.

[Anonymous No.2693994]

Electricity is overrated. Less CNC based processes, an 1860s looks a lot like a modern machine shop. Your equipment was just driven my mechanical power, typically from steam, rather than an electric motor.

[Anonymous No.2693996]

>>2693994
*1860s machine shop

[Anonymous No.2694005]

>>2693545
no better than a handsaw

[Anonymous No.2694007]

>>2693991
based ted post

[Anonymous No.2694013]

>>2693543
RoHS plumbing

[Anonymous No.2694104]

Catamarans and the printing press, then I would repeatedly print as many world maps as I possibly can and leave them everywhere in the hopes that at least 1 person willing to go adventuring picks it up

[Anonymous No.2694105]

>>2693543
There's a big series of books called "1632", "1633", etc. that deal with this exact situation. Lots of details and a great read. One of the techs they choose is a manual foot-powered sewing machine. No electricity needed but gentle enough to get into replicable, tighter-tolerance manufactured parts.

[Anonymous No.2694155]

>>2693545
>>2693547
Water-powered sawmills have had circular saws for centuries already.

[Anonymous No.2694181]

>>2694155
nope, sawmills had straight saws that went up and down, circular saws didn't become a thing until the late 1700's

[Anonymous No.2694193]

>>2694104
>Catamarans

The Austronesian Expansion via catamarans and other multihulls began two to three thousand years before the birth of Christ, and was still happening in the early middle ages.

They may not have been adopted by other cultures until much later but catamarans are some of the earliest ocean going craft used to explore the earth when Europeans were living in caves.

[Anonymous No.2694198]

>>2694181
>late 1700's
>more than two hundred years ago
Don't want to be a pedant, but that's centuries.

[Anonymous No.2694199]

>>2693678
yes, alcohol destination would be my number 1,
maybe a circular saw to replace or upgrade the reciprocating sawmills of the middle ages, at numbers 2
pic related. im positive i can make that with medieval technology

[Anonymous No.2694201]

>>2694198
Still not medieval times.

[toolbox No.2694202]

>>2694201
>Still not medieval times.
That's the point, anon, we're bringing inventions back to the medieval times. The other anon brought in engines and motors and electricity and I pointed out that circular saws have existed way before electricity was common place in sawmills. Centuries is a bit of an hyperbole, but the point is that they won't burn you at the stake for coming up with a series of really sharp chisels mounted on a wheel. Just don't show them the oxyacetylene torch you used to cut the blade...

[Anonymous No.2694203]

>>2694201
>Still not medieval times.
That's the point, anon, we're bringing inventions back to the medieval times. The other anon brought in engines and motors and electricity and I pointed out that circular saws have existed way before electricity was common place in sawmills. Centuries is a bit of an hyperbole, but the point is that they won't burn you at the stake for coming up with a series of really sharp chisels mounted on a wheel. Just don't show them the oxyacetylene torch you used to cut the blade...

[Anonymous No.2694207]

people overestimate how hard it would be to cause massive changes in history just by introducing ideas to the right people. 95% of research and development is essentially wasted time exploring dead ends, even if you have no hope of building an actual internal combustion engine, if you can get the ear of the people that were already doing research and demonstrate the principles behind a piston and crankshaft well enough to prove that that is the finish line they're looking for you probably shorten the development cycle by hundreds of years. You might not see it yourself, at the very least it would take decades to get the metallurgy and stuff figured out with period technologies, though it should be possible, they already had pretty sophisticated metalworking and used petroleum or alcohol fuels in other ways, but even if you don't become Henry Ford in the 1500s the world in 1700 would look nothing like it did in this timeline.

[Anonymous No.2694218]

>>2693543
Water wheel powered line shafting.
Screwcutting lathe, the mother of all machine tools.
Horizontal mills, shapers, vertical mills.
Flat drive belting.
Gearing basics, gear tooth basics.
Standardized measurements.
Screw thread types.

Many weapons improvements, rationed so they want to kiss my arse.

If I could bring one book it would be Machinery's Handbook.

[Anonymous No.2694222]

>>2693543
Tell them to give it up and worship God. We created a horrible tower of babel in the future

[Anonymous No.2694225]

>>2694199
ow, shit i forgot my actual number one, Coffee!
I'd get coffee beans from Africa, build a greenhouse and grow coffee with some monks in a monastery and tell them i got them from god after praying for a way to pray longer into the night.

[Anonymous No.2694233]

Canned food. Would save millions from starvation and disease. Once they have a suitable pressure vessel it can be operated with nothing more than a wood fire. You'd have to do some experimenting to make sealable lids. I'd start with tree resin.

[Anonymous No.2694235]

>>2694203
The point you miss is that someone said-

>Water-powered sawmills have had circular saws for centuries already.

-in response to someone suggesting that circular saws would be novel tech in the middle ages, implying that the circular saw was already in use during the centuries that comprised the middle ages.
It was not, and the fact that "centuries" may have passed between its post- medieval introduction and now is irrelevant to the original premise.

[toolbox No.2694243]

>>2694235
No, you missed the post talking about the motors allegedly required to run the circular saws. They are not required.

>>2693543
I'd bring the gas mantle lantern.

[Anonymous No.2694244]

>>2694235
No, you missed the post talking about the motors allegedly required to run the circular saws. They are not required.

>>2693543 (OP)
I'd bring the gas mantle lantern.

[Anonymous No.2694250]

>>2693543
Proper strategy is stuff we take for granted but would once have been considered WTF. Cast iron and steel production. Organic chemistry. Electromagnetism such as motors and telegraphs. 1800s bearing metal. Typemetal and printing presses. Pigments for paint and stuff. Scientific principles of steel hardening. Wash your hands and keep wounds clean. You will never believe this shit but some molds secrete a fluid that kills bacteria we call them antibiotics.

[Anonymous No.2694349]

>>2693604
Vaccines have no strong negative correlation with disease.
Only sanitation has a strong negative correlation

One of the biggest advents of medicine was surgeons washing their hands

But I second the notion. Sewerage, water treatment and general sanitisation. The medieval craftsmen probably knew more shit than us. I would need to know some serious metallurgy to add value

[Anonymous No.2694355]

>>2693543
Bicycles. We start simple by improving transportation, then infrastructure.

[Anonymous No.2694356]

>>2693543
Basic chemistry, get them to make nitrogen fertilizer to make population explode so easier to industrialize.

Basic steel making to make steel no longer extremely rare (besemer process, blast furnaces etc.,).

Scientific method so they can grow knowledge exponentially more efficiently.

Improve sail designs, limes, tarring blanks, copper bottoms and other things that make long distance sea travel viable.

All those things will realistically make the Industrial Revolution happen centuries earlier and will take off in their own from there. Just having a large population, little food scarcity, global resource access and cheap and abundant steel will do it.

[Anonymous No.2694371]

>>2694356
Discovering vitamin C during the age of sail wouldn't make a difference unfortunately. Citrus fruits were found to treat scurvy several times over the centuries and it was forgotten each time. It wasn't the discovery of vitamin C, but a massive campaign throughout the royal navy to establish routine doses of citrus that finally ended scurvy.

[Anonymous No.2694373]

>>2693543
4 field crop rotation

[Anonymous No.2694407]

>>2694105
>this exact situation
Well, the author chose 1632 because europe was modern at that point and not medieval. German craftsmen were very plentiful and very skilled, if you instead went to say, 1066 you wouldn't have the downtimer tech base to tech adapt quickly, and that's still several centuries into the middle ages. One of their main objectives is to produce 18th century firearms rather than machine guns and bazookas, and then they arrived with 3000 people and all their books and property. Even if you were under the patronage of a king who saw you pop out of the time stream and believed every word you said, you would have one hell of a time trying to implement modern tech.

[Anonymous No.2694411]

>>2693678
>I have no idea how smart the smartest guy would be in terms of todays science, but I could demonstrate the basics of linear algebra or the dynamics involved in a catapult with trajectory predictions.

Would our modern day mathematical notation even be understandable by those guys?

[Anonymous No.2694414]

>>2693891
This anon has it correct. The highest impact is accelerating the agricultural revolutions.
That being said, big parts of agricultural modernization were introducing new world crops (particularly the nitrogen fixing ones) and then chemical fertilizers. So the ceiling on progress is a little low before other industries catch up.
But there is a ton of agricultural productivity that can be unlocked just by making capital investments in irrigation, field design, organization of agricultural processes, etc... Some of those might be generational projects though (the way steppes farming in alpine regions probably took hundreds of years of slowly creeping up the mountain and reclaiming more land).

Another very "quick" thing would be coke refining. As in, it took shockingly long for people to realize, "oh, if we take coal and put it in a charcoal kiln, we burn off a lot of the impurities and make it clean enough for metallurgical uses." Like, such an obvious fucking thing and we spent a good few centuries making iron and steel purely with charcoal.

[Anonymous No.2694431]

OP see what this guy said
>>2693600
>movable type printing
The printing press was arguably the most important invention of the middle ages and isn't that hard to recreate if you knew what to do. It literally is a giant wood press that falls on paper and reversed letters inked with leather.
Repeat that for however many pages times the copies you needed to make and bam.

[Anonymous No.2694435]

>>2694411
Everyone ITT is severely underestimating the mathematical abilities of ancient humans, meaning all the way back to the Sumerians, definitely the Greeks.

[Anonymous No.2694438]

>>2694411
If we're talking around year 1000 Europe, nope. Algebra as we know it today was getting slowly invented somewhere around 9th century in Persia and other middle eastern muslim lands, so only very smart scientists from sandnigger courts had access to such black magic. It wouldn't have made it's way to Europe, and also I don't think they had any practical use for it.

Also your average commoner couldn't read back then, even most of the higher class couldn't, so modern day mathematics would be probably very hard to grasp for a craftsman, even the easy concepts.

But if you're talking about basic arithmetics like addition or division, I think that the guys on the smarter side could get how those work.

[Anonymous No.2694440]

>>2694435
Yes humans in the ancient times had a lot of knowledge about mathematics.

The problem is, a lot of it was lost or neglected by the middle ages because nobody cared and found any use cases, it wasn't taught much and only the upper class had access to it, there's no way in hell an average villager could fucking read and we're talking about some pretty abstract mathematics here.

[Anonymous No.2694441]

Cow pox can be transmitted to humans. soap prevents leprosey, alcohol is a disinfectant,
I suppose I could make vinegar mother.

[Anonymous No.2694464]

>>2694438
People then were just uneducated, not mentally retarded. A craftsman would already use arithmetic in his daily work. He just would not have learned a formal system of writing it down.

If you can understand ratios, then you're pretty close to understanding most of algebra.

[Anonymous No.2694484]

>>2693678
cannabis was known before jesus
alcohol distillation would requrie accurate thermometers which were too expensive for you
algebra would be hard when most people can't read
catapults were very accurate and sighted by observation and experience

[Anonymous No.2694485]

>>2693694
what if that was your introduction? you go around to the smiths and organize them not into a guild but an actual piecework factory setup?

[Anonymous No.2694491]

>>2693543
wash the hands
because the disease kill the momy and baby

[Anonymous No.2694514]

>>2693543
the steam engine and a railway system.

[Anonymous No.2694530]

>>2694514
steam as a force to move stuff was already known, the issue was good metallurgy and machining to do anything useful with the information past the areopile

same for rails, the idea was always known, but it required cheap bulk steel to make it viable past little carts at individual facilities

[Anonymous No.2694536]

>>2694530
The ancient Greeks did not understand why the aeolipile worked because they did not understand the concepts of force and momentum. That wouldn't come until the time of Newton. To them, it was sent into motion by "divine wind".

[Anonymous No.2694675]

>>2694536
https://web.archive.org/web/20080509122356/http://www.history.rochester.edu/steam/hero/section37.html
They did understand enough to make fire + water do useful work, like automatic doors, thinking that you need to understand something to make it is ridiculous, otherwise nothing would get made in the first place, they just didn't have any real, industrial scale,u ses for it, and neither did the other independent discoveries of the steam engine before the industrial revolution.
If you want the steam engine to be useful you need to make something that uses it first.

[Anonymous No.2694744]

>>2693543
i'd be the one trying to learn from them, medieval masons, carpenters or blacksmiths were arguably way more developed than their modern counterparts

[Anonymous No.2694792]

pasta is (relatively) cheap. tasty, nutritious, easy to make, and most importantly has a very long shelf life compared to other foods ancient people had to live with. and people didn't figure out how important it is until the 1300s, arguably the 1700s.
anyone could go back in time a thousand years before that and solve a lot of problems with just knowledge of how to make a fuck ton of dried pasta

[Anonymous No.2694795]

also, people didnt figure out you could cure infections by eating the penicillum mould off mouldy bread until like a hundred years ago. that'd be even easier to do and would make a fuck ton of difference because people died from infections all the fucking time before penicillin was discovered.

[Anonymous No.2694798]

>>2694440
> alcohol distillation would requrie accurate thermometers which were too expensive for you
I can do it in current year without accurate thermometers

> algebra would be hard when most people can't read
That’s why I wrote
> I have no idea how smart the smartest guy would be in terms of todays science.

> cannabis was known before jesus
It was probably known to some, but the earliest first record of it being grown in my part of Europe is a small scale patch in the garden of a very powerful castle in 1280 so it can’t have been that widely known

[Anonymous No.2694800]

>>2694795
There are many steps required to turn pencillum mold into usable penicillin. The mold used doesn't even make the precursor to penicillin unless grown in a controlled environment that stresses the fungus. Feeding peasants moldy food is mostly going to have the effect of making them throw up and will occasionally give good results on the off chance that the mold is in conditions that lead to elevated penicillin levels.

[Anonymous No.2694805]

>>2694800
let me guess buddy, you think vaccines work too.
jk thanks for the correction and have a nice day

[Anonymous No.2694816]

>>2694800
Theres a manga called jin about a doctor sent back to the 1800s and he starts an entire penicillin growing business, I don't remember if he had advanced metallurgy but otherwise all you really need is knowhow (the doctor was world class and had figured out the from scratch problem for fun as a student), time and a bunch of diligent workers. I think brewers would probably be the best fit you could get your hands on en masse, and maybe an apothecary or something if you manage to recruit one. But this would almost be a full time project until you manage to get the business off the ground, and then you would probably have to travel around on order of the king and teach others. And this is of course assuming you don't get drowned for witchcraft or something.

[Anonymous No.2694823]

who gives a fuck and how is this diy related anyway
take this bullshit to /sci/ or reddit

[Anonymous No.2694950]

>>2693545
>>2693603
>>2693675
>>2693678
>>2693952
>>2694218
>>2694356
>>2694414
it's like you guys didn't look up what they had before typing.

>>2694805
being this stupid, and being proud of it.

[Anonymous No.2694962]

>>2694950
> didn't look up what they had
> they
Who are they?

[Anonymous No.2694965]

>>2694962
people in the 1000 years spanning the middle ages.

[Anonymous No.2694977]

le redditor has arrived to le thread

[Anonymous No.2694989]

>>2694977
welcome

[Anonymous No.2695015]

>>2693543
If I go to medieval times, I want to set one of these at the edge of the castle village.
The carnage will be entertaining. While they are all distracted, I will steal the wealth of the kingdom, go to Norway or Spain and commission a Bermuda rigged sailboat. Make myself a compass and sextant. Show them 2 cans and a string.
Then sail off in the sunset to pillage and plunder the Med until my crotch rots off from excessive use.

[Anonymous No.2695048]

>>2693993
This guy gets it. Methods and systems instead of tools and electricity.

[Anonymous No.2695082]

>>2693993
This dude thinking sewers were invented after the middle ages

[Anonymous No.2695095]

>>2693560
>Anything that doesn't require electricity is stuff they already knew how to make
Are you saying we already acquired a full understanding of chemistry and medicine in the Middle ages

[Anonymous No.2695710]

>>2693885
>IIRC they didn't figure out how the Romans did it until some time in the late 1700s.
More like just last year iirc, was news about it being figured out just the other day.

[Anonymous No.2695711]

>>2694798
>the earliest first record of it being grown in my part of Europe is a small scale patch in the garden of a very powerful castle in 1280
They've found it in viking graves iirc

[Anonymous No.2695818]

>>2695095
>Are you saying we already acquired a full understanding of chemistry and medicine in the Middle ages
Quit being pedantic.

[Anonymous No.2695964]

Probably ballistics would be the most accessible. I'd work on getting nitrogen from fertilizer and potassium nitrate ash, then start a factory for building fuel bombs of various sizes. Gunpowder already existed, but I would show how it could be loaded into heavy metal tubes and used to propel projectiles at high speeds. I'd teach them how tear gas could be constructed from various toxins mixed with sugar and saltpeter, and start experimenting with distilled ethanol and tree resins to make primitive napalm (Greek fire, as it was known).

After that I'd introduce the principles of factory farming. Show them how more food can be produced faster if you don't allow the animals space to move around, and how successive inbreeding can be used to isolate characteristics like hypothyroidism.

[Anonymous No.2695985]

>>2693543
Plumbing and septic tanks. And septic collection for ammonia and fertilizer.

[Anonymous No.2696013]

Philips head screws

[Anonymous No.2696015]

>>2695711
Pliny the Elder wrote about its uses. It was well known in the ancient Mediterranean.

[Anonymous No.2696038]

duck tape

[Anonymous No.2696073]

i would bring them democracy

[Anonymous No.2696074]

>>2693543
basic hydraulics, since they forgot what the romans knew all along

[Anonymous No.2696089]

>>2693543
Obviously electric generators.
But you need magnets. Tell me if this is a good way to make a magnet:
You make a lighting rod in the shape of a solenoid and in the center you place an iron piece. When the lighting strikes it doesnt hit the iron piece but the solenoid, creating a very strong magnetic field. Would that not magnetize the iron?

[gbeto No.2696096]

Perhaps metallurgy is the key to getting the ball rolling smelting large quantities of steels and alloys it the only way that they will be able too make me my lathe and ball bearings next hydraulics

[Anonymous No.2696394]

>>2696089
>lighting strikes
Drives your iron rod 100 feet into the ground. Oopsie! Wrong Polarity.

[Anonymous No.2696395]

>>2693543
Dark Ages, and the goal is to boost tech?
I'd go with the movable type printing press.

[Anonymous No.2696710]

>>2695082
European barbarians didn't learn the benefits of sewers until surprisingly late.

[Anonymous No.2696899]

>>2693545
Invent the ball bearing
Heh nothing personal kid

[Anonymous No.2696900]

>>2693552
7th to 8th century

[Anonymous No.2696901]

>>2693543
Honestly a mechanical lathe would be the biggest thing you could teach them
Or steel making

[Anonymous No.2696903]

>>2693543
>time travel
Please don't do it.

[Anonymous No.2697028]

I don't have much to contribute besides tourniquets and how to treat wounds. And of course sterilizing surgeon tools. I guess i could bring a book with me containing info on how to develop antibiotics as well which would help people a lot.

[Anonymous No.2697029]

>>2693543
i'd teach them how to sort out a certain subversive problem and make christianity a serious religion

[Anonymous No.2697072]

>>2693543
Lathe
Battery/electricity
Hygeine

[Anonymous No.2697077]

>>2695082
Dark ages euros were throwing their chamber pot contents out into the street

[Anonymous No.2697089]

>>2693543
>bang for buck
The most "bang for buck" would be a foundational technology, one that all other technology builds from.

Of course first is the printing press, the most important technological advancement of the era.
Second would be a lathe.

[Anonymous No.2697391]

>>2693543
Once again, Chemchads clean house here.

The best thing to give them would obviously be knowledge. Give them enlightenment philosophy, calculus, the scientific method, maps, Newtonian physics, basic chemistry, germ theory, evolution (maybe), selective crop breeding, coal and oil, etc. Public schooling as well.
Tell these things to the right people and you've jumped ahead a few hundred years.

Other than knowledge, the #1 thing that you could invent is artificial fertilizer, but this is impossible for 99.99% of people. Even if you know exactly what the Haber-Bosch process is, it requires too many prerequisite technologies. As a side note this also unlocks smokeless gunpowder and high explosives.

Therefore our goal is to speed run the bare minimum technologies to start the industrial revolution. The most obvious option is to advance metallurgy. Even the Greeks had steam engines, but they never had the metallurgy to make use of them.
The main issue is that charcoal or coal fires do not produce temperatures high enough to melt steel or iron. Therefore you must use coke (technically already invented in China). It's produced by heating bituminous coal in an environment without air. You can literally just burn a big pile of coal, or do it in large ovens.

This alone is probably enough to start the industrial revolution, but lets say you want to go further. How do you turn that cast iron into steel? You could just make crucible steel, but an open hearth furnace would be much better. Modern steelmaking relies on blowing air over molten iron to oxidize some of the carbon, reducing the carbon content and allowing you to turn cast/pig iron into steel. Specifically for an open hearth furnace, the basic principle is to use stacks of bricks as thermal batteries, which allows the furnace to get hot enough for this process. This process is slow, but that's actually a good thing since you won't know what the fuck you're doing and will need a LOT of experimentation.

[Anonymous No.2697519]

>>2693543
I would focus on producing more food. I can't do all the work of advancing the world economy. But moving 90% of the world's labor away from farming to other activities is what will jump start the industrial revolution.
>crop rotation
>fertilizers
>irrigation
>selective breeding
>cotton gin
>iron plow
>flour mill (Water & Wind powered)
Also, having whole colleges/schools dedicated to farming would be very beneficial.

[Anonymous No.2697652]

>lathes
4,000 year old invention in principle

[Anonymous No.2697852]

>>2693543

concrete and concrete structures

middle ages biggest problem was constructions

Took to long to build them, and limited practical architecture.

[Anonymous No.2698063]

>>2697029
Humanity might not even be something you recognize when you get back. Just imagine how far we'd go if you did such a thing.

[Anonymous No.2698169]

>>2693554
You would compete with wattle and daub.

[Anonymous No.2698175]

>>2694431
The invention the invention* of the movable type printing press almost exactly coincides with paper making becoming widespread*.
It wasn't an incredible invention. People didn't make them sooner because there wasn't a use for them without cheap material to print on.

*in Europe, China had both of them much earlier

[Anonymous No.2698205]

Electricity, quantum mechanics and string theory
Superconductors, astrophysics
Philosophy, logic, rational thinking
Crypto, coding, investment

[Anonymous No.2698226]

>>2693560
You are looking at the best of the best examples of medieval shit that was sturdy enough to survive until now and beautiful enough to be put on public display.

Also Neanderthals didn't live in caves either.

[Anonymous No.2698229]

>>2697028
>how to develop antibiotics as well which would help people a lot
Listen, you need to eat this rabbit brain powder for your dog bite, just trust me bro.

[Anonymous No.2698233]

>>2693543
>So, let's say that you were teleported to the medieval times.
>
>What would be the best and considerably easy thing/craft to explain to them and teach them that could potentially really boost up their technology level (think bang for buck)?
>
>What could (You) explain to them?
>
>also yes, pic rel is ai generated

Jews. Explain usury and Jewish tactics, they are not your ally, and niether are the Arabs. Jews will make you forget all of the skills you have learned and rely on tricks and the desire to not be in debt instead of progressing and owning real assets and retaining your knowledge.

[Anonymous No.2698240]

>>2694244
>I'd bring the gas mantle lantern.
Good choice.

[Anonymous No.2698253]

>>2693882
You're a fucking retard.
>>2693994
>an 1860s looks a lot like a modern machine shop
So are you.
>>2694371
>Citrus fruits were found to treat scurvy several times over the centuries and it was forgotten each time
It wasn't exactly "forgotten" they just ran into weird, conflicting data that "disproved" the efficacy of citrus in preventing scurvy.
>>2694536
Newton was FAR from the first person to propose the concept of momentum, most of his work on that was consolidary and his actual advancements were specifically on gravity and its effects on celestial bodies. While his specific definitions weren't totally correct, the ancient Greeks absolutely understood the basic concept of gravity, inertia, and momentum.
>>2696901
>>2696096
>>2697072
Without google, explain how to make a perfectly flat surface. If you can't do that you're not getting anywhere near making a good lathe.

>>2693543
Realistic answer is you unleash multiple plagues that rival the Black Death by bringing modern germs and viruses back a 1000 years before you get killed for being a spy/vagabond because you can't speak a word of the local language and no one knows who the fuck you are. Assuming magical fantasy land where that won't happen, I get the fuck out of Europe and go to Arabia because they weren't in the middle of a dark age, and teach them as much math, physics, medicine, foundations of precision and gauging, and metallurgy as I can manage.

[Anonymous No.2698295]

>>2698253
nyaruhodo
some good points but I don't really agree with the superplague issue, most of the causes of those were insanely bad hygiene and citywide lack of any sanitation, including both plumbing and proper food prep being nonexistant. Smallpox, Polio, Bubonic and Pneumonic Plague, Cholera, Dysentery, etc are all not concerns in the modern era because people no longer get exposed to them in the first place. The only major illnesses you could reasonably bring back would be influenza and covid, neither of which would even register as plagues compared to the literal dozens of >10% mortality rate nightmares that any millenia-old city would harbor. Sure there's shit like Ebola and maybe Malaria but no first-world time traveler is reasonably likely to be carrying either one, and both existed that long ago anyways. Modern pandemics are pussy shit; it's not a real plague unless it kills one in three people for literally every single human being alive, as in global 30% depopulation. Plumbing, proper hygiene and disease control, and a reliable method for culturing penicillin might be the three most important things you could possibly bring back ahead of even the entire machining and engineering disciplines; machining and engineering is expanded through experimentation and critical though, and so is medicine - but with the prior ones the price paid for learning is mostly in materials, whereas the entire field of medicine is built largely on statistical observations generated from hundreds of millions (if not billions) of corpses.

also, and I'm not the anon you're quoting (haven't posted in this thread till now), but
>Without google, explain how to make a perfectly flat surface. If you can't do that you're not getting anywhere near making a good lathe.
wouldn't the 3 plate lapping method be all you really need? probably the hardest part would be finding the correct progressive grit sizes for abrasives

[Anonymous No.2698310]

>>2698295
>I don't really agree with the superplague issue
I think you're forgetting that viruses and bacteria evolve as well, along with the human immune system. Literally everything you potentially bring with you would be a novel disease to the 8th century. What might give a modern human a sniffle and scratchy throat could potentially leave an 8th century human with a brain wrecking fever. Just look what small pox and other Euro diseases did to the Americas when they first got brought over. They would also spread like wild fire due to the complete lack of immune resistance. As another anon mentioned, hygiene wasn't as bad as most people think back then, it just wasn't amazing. Modern pandemics also aren't that bad due to modern medicine. The Spanish Flu was well after germ theory was established and general hygiene improved, but it still killed tons of people because actual medicine hadn't advanced that much.
>culturing penicillin
Don't know how to do that so I didn't mention it. Plumbing also isn't really a novel idea at this point, it's just incredibly expensive and somewhat pointless without reliable running water to wash everything away, which in the vast majority of regions involves building large water towers that would require far more powerful pumps than could reasonably be built or operated. A much better option would be something more akin to garbage collection for human waste, and enforcing a littering fine.
>wouldn't the 3 plate lapping method be all you really need?
It is, but you don't get flat surfaces just scrubbing them together randomly, there's a specific order you have to go in for it to work properly. As for lapping compound, reliably sized grits are mostly for getting good surface finish. You don't really even need grit, it just makes it way faster. But that's the easy part. Now you have to make true squares and know how to scrape ways or your lathe will just bind up.

[Anonymous No.2698340]

>>2694484
Basic alembic and retort type distillation apparatus were around by at least the first century, and likely quite a bit farther back. You don't need a thermometer to make spirits. It helps if you want a high proof fractional distillate from a reflux column, but for a basic pot it's completely extraneous. Alcohol distillation for perfumery, medicine, and alchemy was being performed in the Islamic world by the 9th century and spread into Europe for similar purposes by the high middle ages. At some point between then and early modernity distilling for drink became common practice.
>>2694491
Trying to get sterile technique and a basic variation on germ theory across probably wouldn't be too difficult, with the right rhetoric, explaining it in harmony with humors or miasmas, rather than in opposition. Having a microscope would help a lot, but I think showing showing the effects of alcohol or soap on the macroscopic "worms" found in stagnant water could be reasonably convincing. Ether for anesthesia would be pretty sweet too; pretty sure a learned alchemist could whip some up no problem.

[Anonymous No.2698445]

>>2698340
For me it's the ant with 9 (or 10?) legs.

[Anonymous No.2698606]

Why the fuck would I teach a bunch of old people my secrets when I could use those secrets to start fires and kill stuff and steal everything.

No, no, I'd take a bunch of those dudes to the bronx zoo, current day, and have them partake in fox tossing in front of everyone just cause that shit would be hilarious. Imagine king george standing trial in some shitty nyc courtroom for animal cruelty.

[Anonymous No.2699010]

>>2693543
>What could (You) explain to them?
Maybe distillation given the right materials - if you can get higher purity alcohol you then have disinfectant and potential fuel for other things.

Otherwise (known) mill dam + bell siphon + improved waterwheel for milling at higher horsepower intermittently as dam fills, then drains quickly (high power), then refills.

If you could do the above well enough to drive a bellows to get an early version of a bessemer blast furnance then its OP as heck.

>>2694371
>Discovering vitamin C during the age of sail
Pasteurized foods (eg, Sauerkraut) retain decent amounts of C so this is actually a really good take if you land in areas with those.

Also maybe introducing the bermuda rig for sailing since that seemed to only come along much later - but is probably only workable for small craft like fishing boats due to materials science of the time.

[Anonymous No.2699019]

>>2693543
hydroponics

[Anonymous No.2699029]

>>2693600
heh, this is my exact AOE build order...

[Anonymous No.2699032]

>>2697391
> enlightenment philosophy

Yeah, burned at the stake for sure

I’d be happy just giving those lovely people access to my biome and virome. Hopefully it would kill millions.

[Anonymous No.2699034]

>>2698205
Crypto

>sir listen, it’s it’s really simple. You give me 10 real chickens, and I will give you 100 crypto chickens. These crypto chickens can be exchanged for real chickens at any time. How we keep track of how many imaginary chickens? That’s easy. All the chicken holders will keep track, and anytime virtual chickens are bought sold or traded, we will send out a messenger, and everyone will update a ledger with who has how many chickens. Yes, that list will get rather lengthy, and I know you cannot read or write, but here is the genius, you will use river rocks. Everyone has a river, and rocks, right? Hold on let me make a model… what do you mean you aren’t interested? You are missing out on a once in a lifetime opportunity. Get into it now ahead of the curve bro.

[Anonymous No.2699035]

>>2698226
>You are looking at the best of the best examples of medieval shit that was sturdy enough to survive until now and beautiful enough to be put on public display.


you do know that the vast majority of medieval artefacts are stuff that got lost, dropped over the sides of bridges, into wells, buried in the field while ploughing, etc?

the amazing stuff in perfect condition, yes, that is survivor bias as it was stored. River-finds, etc? the exact opposite.

[Anonymous No.2699039]

>>2699034
How about have them pay me in exchange of an NFT of a place in heaven?

[Anonymous No.2699041]

>no one would understand you, because you’d sound like a fag
>you wouldn’t be able to understand anyone
>your symmetrical features, height, mouth full of teeth, soft hands, strange language would ensure you ended up being arrested / rounded up / and either killed as a foreign spy or end up dead in a ditch somewhere. Or burned as a witch, or god knows what else. God only knows what kind of bacteria and virus are hanging around to tear into your ass. Or get carved up by criminals. Or end up in the kings forest so they chop your hands off or whatever the fuck. Plus that circumcised Jew dick you are running around with.

Try explaining something scientific to someone in a foreign language that lacks words for any of the concepts you were raised with. Try convincing someone of anything when you are the visual equivalent of a man from mars.

The real irony would be when you are slowly dying in a prison from some stupid infection, and meet all the other time travelers that have jumped back here. Or you show up and are immediately arrested because some asshole time traveler jumped in 100 years befor you, and has taken control and has a massive bounty placed on any other strange looking assholes who show up wearing hoodies and sneakers, and speaking a strange language. You’ll end up his tech slaves, being forced to regurgitate every bid of information that can be squeezed out of you. Kept locked up because you are too dangerous to be let loose.

[Anonymous No.2699042]

>>2699039
Shit, was the Roman Catholic Church just a big crypto scheme with people doing prayers as proof-of-work

[Anonymous No.2699873]

>>2693562
Firearms were already invented in China and to get them anywhere nearly as strong as necessary would require advancements in metallurgy, which would be my first step.

[Anonymous No.2699876]

>>2693603
Plumbing has already existed in Mesopotamia and northern Europe as early as 3000BC.
https://en.wikipedia.org/wiki/History_of_water_supply_and_sanitation

[Anonymous No.2699877]

>>2699029
KEK

[Anonymous No.2699926]

>>2698226
That may be true, but if you look at even half a century ago, a much higher percentage of adult men knew how to use tools and fix things. I'm not talking about the jerryrigged shit built by random peasants that fell apart long ago, I'm talking about actual trusted craftsmen being smart.

[Anonymous No.2700669]

>>2693543

[Anonymous No.2700692]

>>2693543
Absolutely nothing. I'd have absolutely no way of being understood and vice versa if I was sent back to 7th-8th century England, we speak almost indecipherably different languages.

[Anonymous No.2700727]

>>2693547
Tbf most technicians don't actually understand how they work beyond a superficial level.

>>2693751
Interchangeable parts came before machine tools. Usually involved a lot of filing.

>>2693854
I wouldn't use a piston engine, but picrel with a flexible housing. It could be made using hand tools, but would seal much better than early steam engines.

[Anonymous No.2700754]

>>2694485
what's your distribution plan

[Anonymous No.2700759]

>>2700727
>Interchangeable parts came before machine tools
You don't actually know what interchangeable parts means, do you?

[Anonymous No.2700770]

>>2693543
As an American, I would obviously teach them about fractional reserve bamking, the benefits of importing blacks, and the gay pride parade.

[Anonymous No.2700774]

>>2693543
The printing press. It's easy to understand, easy and cheap to manufacture (you can start with wooden letters) and offers massive benefits. If the goal is to advance the tech level, the printing press can't be beat. Once they have it knowledge will be far easier retained over generations. Meaning any generation can build upon the works of previous generations far more easily. It also frees up a lot of smart labor that can now find other employment. More texts, less scribes, more craftsmen, intellectuals.

[Anonymous No.2700922]

>>2700774
>>2698175

[Anonymous No.2700930]

>>2693885
The secret is they used sea water. Weird that it took so long for people to figure out.

[Anonymous No.2701172]

>>2700759
>Evidence of the use of interchangeable parts can be traced back over two thousand years to Carthage in the First Punic War. Carthaginian ships had standardized, interchangeable parts that even came with assembly instructions akin to "tab A into slot B" marked on them.
https://en.wikipedia.org/wiki/Interchangeable_parts#First_use
https://en.wikipedia.org/wiki/Interchangeable_parts#First_use

[Anonymous No.2701174]

>>2700759
>The use of interchangeable parts removed the problems of earlier eras concerning the difficulty or impossibility of producing new parts for old equipment. If one firearm part failed, another could be ordered, and the firearm would not need to be discarded. The catch was that Whitney's guns were costly and handmade by skilled workmen.
>interchangeable parts
>handmade
https://en.wikipedia.org/wiki/Interchangeable_parts#Eli_Whitney_and_an_early_attempt

[Anonymous No.2701213]

>>2701174
Nice cherry picking, you forgot the section right after that.
>Charles Fitch credited Whitney with successfully executing a firearms contract with interchangeable parts using the American System,[4] but historians Merritt Roe Smith and Robert B. Gordon have since determined that Whitney never actually achieved interchangeable parts manufacturing. His family's arms company, however, did so after his death.
>Whitney never actually achieved interchangeable parts manufacturing.
Regardless of that, "modern" like machine tools date to the 15th century. If you don't want to count what was basically a lathe that only does threading, the industrial revolution had been going on for 50 years by the time Whitney did this stunt, and machine tools were in widespread use. I mean for fucks sake anon, we had rifled barrels decades before this. Did you think they were hand filing the rifling? Learn some fucking history, holy shit.

[Anonymous No.2701234]

>>2698253
>Without google, explain how to make a perfectly flat surface.
I'll just bring my wife's ass

[Anonymous No.2701347]

>>2701213
>In July 1801 he built ten guns, all containing the same exact parts and mechanisms, then disassembled them before the United States Congress. He placed the parts in a mixed pile and, with help, reassembled all of the firearms in front of Congress, much as Blanc had done some years before.
Making interchangeable parts is different from being able to mass produce them. The truth is the first interchangeable parts existed before machine tools. Fuck, even this part proves you wrong:
>Evidence of the use of interchangeable parts can be traced back over two thousand years to Carthage in the First Punic War. Carthaginian ships had standardized, interchangeable parts that even came with assembly instructions akin to "tab A into slot B" marked on them.

[Anonymous No.2701349]

>>2701213
>Did you think they were hand filing the rifling?
Rifled barrels were forged over a mandrel by hand in this period.

[Anonymous No.2701352]

>>2698253
>Without google, explain how to make a perfectly flat surface. If you can't do that you're not getting anywhere near making a good lathe.
Shine a light in the same plane as the plates surface. File away everything that casts a shadow

[Anonymous No.2701358]

>>2701352
Also

[Anonymous No.2701360]

>>2698253
>Without google, explain how to make a perfectly flat surface. If you can't do that you're not getting anywhere near making a good lathe.
Shine a light in the same plane as the plates surface. File away everything that casts a shadow

Also picrel

>>2701213
>In July 1801 he built ten guns, all containing the same exact parts and mechanisms, then disassembled them before the United States Congress. He placed the parts in a mixed pile and, with help, reassembled all of the firearms in front of Congress, much as Blanc had done some years before.
Making interchangeable parts is different from being able to mass produce them. The truth is the first interchangeable parts existed before machine tools. Even this part proves you wrong:
>Evidence of the use of interchangeable parts can be traced back over two thousand years to Carthage in the First Punic War. Carthaginian ships had standardized, interchangeable parts that even came with assembly instructions akin to "tab A into slot B" marked on them.

>Did you think they were hand filing the rifling?
Rifled barrels were forged over a mandrel by hand in this period.

[Anonymous No.2701368]

propably the radial blower and the concept of converting rotational energy to oscillating.
If you think about it, it is fucking nuts how recent harnessing artificial wind is.

[Anonymous No.2701415]

>>2701360
>Shine a light in the same plane as the plates surface. File away everything that casts a shadow
That's hilarious you think that will actually work, let alone you thinking you'll find a light even close to bright, and focused enough for it in the 8th century.
>Also picrel
Do you even know what Prussian blue is? Do you know how to make an equivalent, because it doesn't exist in the 8th century? Beyond that, filing and scraping are two completely different processes, and your pic is wrong about, and missing incredibly important context for doing machine ways.
> Making interchangeable parts is different from being able to mass produce them. The truth is the first interchangeable parts existed before machine tools. Even this part proves you wrong:
> >Evidence of the use of interchangeable parts can be traced back over two thousand years to Carthage in the First Punic War. Carthaginian ships had standardized, interchangeable parts that even came with assembly instructions akin to "tab A into slot B" marked on them.
Interchangeable parts are useless without mass production. They inherently go together. The latter example is far closer to prefabrication than interchangeable parts. Tolerances for timber joinery like that are a mile compared to actual mechanical assemblies. I haven't looked into it deeper yet, but I can almost guarantee there was still some final fitting adjustments done during assembly.
>Rifled barrels were forged over a mandrel by hand in this period.
(Citation needed)
Rifling was predominantly cut with single point tools until the mid 20th century.

[Anonymous No.2701429]

>>2700922
Paper making is easy as fuck and part of (re)inventing the printing press. You'd have to spend months building your press, you would have the time to learn paper making.

Even before paper was in widespread use there were lots of places that wrote a lot. Any king had a group of scribes and nearly every cloister spend a considerable amount of work copying texts and scribing. It would be enough to get those people to use the printing press. Not to mention that trademeets and large cities would also find a lot of uses for early printing presses.

[Anonymous No.2701434]

>>2701429
Writing is faster than setting movable type. You only save time if you're making a large number of copies, which you aren't if you're using expensive material like vellum or parchment.

>you would have the time to learn paper making.
Paper making is not a complicated process but you just admitted that you don't know how it works. Are you going to look it up on wikipedia after you travel back in time?

[Anonymous No.2701468]

>>2693543
no one mentions sheet metal working, how many modern things have some sheet metal part within or without?

[Anonymous No.2701482]

>>2701415
>Do you even know what Prussian blue is?
Iron ferrocyanide, a pigment.

>Do you know how to make an equivalent, because it doesn't exist in the 8th century?
Any pigment will do.

>Interchangeable parts are useless without mass production.
Yes, interchangeable metal parts is in many cases not worth it. There are also examples of where it doesn't really matter (i.e. tapping a hole that was punched on a forge or casting or die-forged part that doesn't require tight tolerances).

https://en.wikipedia.org/wiki/Rifling#History
>Though true rifling dates from the 16th century, it had to be engraved by hand and consequently did not become commonplace until the mid-19th century. Not sure if this was a historic method: https://youtu.be/UgALYaDYcLU

>>2701429
>invoking the eternal scribe
I believe they are now called programmers and CNC "machinists". Zero creative output.

>>2700774
>less scribes, more craftsmen, intellectuals.
That I can get behind.

>>2701434
>Paper making is not a complicated process but you just admitted that you don't know how it works.
Soak cellulosic matter in lye.

[Anonymous No.2701493]

>>2698253
I can make a perfectly flst surface with 3 stones and water because I went on an autistic traditional woodworking and amateur masonry kick.

You can make a pulldown lathe with none of this.

[Anonymous No.2701494]

>>2693543
Unfortunately the crafts I know best were invented before the medieval times so I wouldn't be the best help. It's fun to imagine me helping them develop better sanitation infrastructure though.

[Anonymous No.2701498]

>>2701494
>I know best were invented before the medieval times

go sit in the corner until you can learn how to stop lying

[Anonymous No.2701500]

>>2701498
I work with fibers, so trying to teach medieval fiber craftspeople knitting, weaving, and crocheting would be not useful. Yes I can make clothes and rope and things like that, but these crafts have existed since before Christ so it's doubtful I would be much help to them.

[Anonymous No.2701502]

>>2701493
What the fuck is a pulldown lathe?

[Anonymous No.2701505]

>>2701502

[Anonymous No.2701593]

>>2694349
>vaccines have no negative correlation with disease
That must be why polio, mumps and measles dropped off so hard right around the time we started requirimg those vaccinations, right. Really excited to hear whatever whacko theory you have to assign causation elsewhere.

[Anonymous No.2701607]

>>2701482
>>Though true rifling dates from the 16th century, it had to be engraved by hand and consequently did not become commonplace until the mid-19th century. Not sure if this was a historic method
Anon please don't tell me you think that mandrel is forming rifling let alone a finished barrel, or that you could do so with that kind of technique. They made barrel blanks like that and then they had to be reamed and rifled by cutting tools.
https://www.youtube.com/watch?v=qTy3uQFsirk

[Anonymous No.2701610]

>>2701593
Better living conditions?

>>2701607
>Anon please don't tell me you think that mandrel is forming rifling let alone a finished barrel
No, I was confusing it for a more modern process used by Steyr: https://youtu.be/aCMzyNHkjpk?t=76

>or that you could do so with that kind of technique
But technically you could with these modern mandrels.

>then they had to be reamed and rifled by cutting tools
I doubt the early rifles were reamed, and granted the early cutting tools were hand tools. To my knowledge, boring machines were invented in the late 18th century.

[Anonymous No.2701618]

>>2701610
>No, I was confusing it for a more modern process used by Steyr
No, based on your other posts you just like saying dumb shit and scrambling to find something to "prove" it, or back tracking.
>But technically you could with these modern mandrels.
It's a completely different process and it's also done cold.
>I doubt the early rifles were reamed, and granted the early cutting tools were hand tools. To my knowledge, boring machines were invented in the late 18th century.
Reaming and boring are two different things, barrels have always been reamed, and the late 18th century is what was being discussed to begin with.

[Anonymous No.2701712]

>>2693543
Bring a world map with me, at least. Better if I could bring at 2 e-readers, external drives, cables, batteries, and solar chargers with a secure tough case. If I can't bring anything and am teleported naked, probably die soon as the naked loon with queer language.

[Anonymous No.2702039]

>>2697089
>foundational technology, one that all other technology builds from.
>Of course first is the printing press

[Anonymous No.2702133]

>>2701593
>polio
they stopped putting ddt in food

the others are correct

[Anonymous No.2702206]

>>2702133
>they stopped putting ddt in food
>polio pandemics started around 1900
>DDT wasn't even known to be an insecticide until the late 30's, and wasn't sold to farmers until the end of WW2
>implying chemicals can cause viral infections on their own

[Anonymous No.2702214]

>>2696013
Robertson is superior. Robertson himself was a control freak who couldn't get comfy with licensing while Philips let every Tom, Dick and Harry buy a license. The ubiquity of the Philips head is in SPITE of its quality.

[Anonymous No.2702217]

Wire nails and light timber framing techniques would reduce the barrier to entry for carpentry and make more efficient use of the available wood slowing the deforestation of continental Europe. Alternatively, Japanese joinery design would reduce the demand for nails and screws reducing costs elsewhere.
The most fun thing to introduce would be probably be more /ck/ than /diy/. Pizza can really stretch a tight ingredient budget and can use pesto if we aren't explaining where the Americas are and how to get their tomatoes. Turning sap into syrups and sugars isn't hard to explain either.
Creating dental floss and toothpaste/toothbrushes wouldn't be too bad either especially if it is before the proliferation of refined carbs.

[Anonymous No.2702342]

>>2702217
>toothpaste/toothbrushes
They had toothbrushes and most cultures probably had toothpaste equivalents. We have written accounts from the Romans that the Iberians used their own urine (ammonia) to clean their teeth.

[Anonymous No.2702356]

>>2693543
Best I'd be able to do is perhaps crop rotation, some metallurgy, pretty good mathematics, geometry, statics, grammar, standards and eventually, I'd be able to figure out some kind of steam engine.
I'd also introduce the concept of trains and the printing press and give them sketches for it, so that future generations may continue my work, the same as with standards. I'd also be a historian in addition to all of that and I'd record so much shit (and mix in shitposts).

[Anonymous No.2702397]

>>2693543
I would go to a random artisan and beg to be his appendix, I have nothing to teach them (I'm electrician).

[Anonymous No.2702403]

>>2702397

me too, but I'd beg to be his gall bladder (I'm plumber).

[Anonymous No.2702466]

>>2702342
I assumed OP wanted to send us to England or France based on the word medieval. That same time is a called a Golden Age for Islam and the territories they controlled.

[Anonymous No.2703720]

>>2693543
Sell germ theory as some sort of religious mumbo-jumbo how being unclean is worshiping devil.
I want to see army commander who would ignore lack of infections after fight.
Not to mention, making penicillin would be something else for medieval troops.

[Anonymous No.2704005]

>>2703720
When germ theory was new, doctors were among the critics. They did not or could not accept they had been killing patients simply by failing to wash their hands. Hippocratic oath can cut both ways. Never doubt humanities capacity for denialism.

[Anonymous No.2704237]

>>2693543
Basically, nothing, because you would suck at getting the materials for anything you wanted to make in good enough tolerance. And a lot of things that you try to make wouldn't appeal to them; even if you can show them a steam engine, they will tell you they have serfs, horses and slaves.

[Anonymous No.2704247]

>>2693547
>how to make electricity and efficient engines
>what is a water wheel?

[Anonymous No.2704252]

>>2698226
iirc the only medieval bow still in existence is a really shitty one that was dropped in a bog, probably by a child because it is tiny and roughly hewn.
I have witnessed very good buildings crumble over a span of 10 years, i have seen absolute crap outlast them- because of this one weird trick: keeping water and weather out.
The idea that the old things we have now are somehow outliers from the high quality end of the bell curve, is stupid and made by people who have never seen old buildings because they live in a country that's only about 200 years old.
t. repairs houses older than america.

[Anonymous No.2704254]

>>2693543
electric light.
wind generators, wires, light bulbs. all pretty easy to make with medieval tools.
I once made a light bulb from a test tube, a cork, paperclips, some iron wire and helium.
the helium can be exchanged for an atmosphere without oxygen, attainable by burning something in there, like a sacrificial filament, also some of the best vaccum is attained by using flowing water alone.

[Anonymous No.2704270]

>>2704237
>Basically, nothing, because you would suck at getting the materials for anything you wanted to make in good enough tolerance.
>they will tell you they have serfs, horses and slaves
If they have trouble extracting the materials, why would they reject a more efficient method. By that logic, they wouldn't try to replace wagies with robots.

>>2704254
Those light bulbs aren't hot enough to do anything useful.

[Anonymous No.2704326]

>>2704254
Would probably be better off with a flat wick lantern.

[Anonymous No.2704329]

Primitive penicillin synthesis.

Maybe some intricate gear mechanisms like differentials and steering axles.

Maybe threaded nuts and bolts? I know metallurgy is still not great but I feel like there's potential for standardizing threading here, which could greatly accelerate manufacturing of structures and wheeled weaponry.

Honestly in this situation I would just start drawing shit and try to sell myself as a war engineer to whatever monarchy I lived under.

[Anonymous No.2704333]

>>2693560
This
>>2704254
I think you are drastically underestimating the amount of things you take for granted that would be necessary to make anything useful come of this.

[Anonymous No.2704368]

>>2704329
>Maybe threaded nuts and bolts? I know metallurgy is still not great
I just bought a Chinese TIG torch that came with a plastic screw. You'll be fine.
>Honestly in this situation I would just start drawing shit and try to sell myself as a war engineer to whatever monarchy I lived under.
based

[Anonymous No.2704369]

>>2693543
how to synthesize premarin from horse piss to advance the tranny tech tree by 1000 years

[Anonymous No.2704379]

>>2704254
>some of the best vaccum is attained by using flowing water alone.

The vapor pressure of water at 25°C is over 2kPa (about 0.43PSI). That's a pretty shit vacuum, much less "some of the best [...] attained".

[Anonymous No.2704402]

>>2704379
Not him but
>I don't know what a venturi valve is
Vapor pressure has literally nothing to do with what he's talking about.

[Anonymous No.2704423]

>>2693547
take me back

[Anonymous No.2704424]

>>2693675
> come back to the middle ages sufficiently knowledgeable to build a photovoltaic panel
> Catholic Church burns you at the stake
oh well still fucked a lot of prime ye olde pussy

[Anonymous No.2704507]

>>2693696
>You’d be in your writing room writing snarky responses with a feather while I’d be launching precision strikes of glass spheres filled with ethanol at your castle

kek

[Anonymous No.2704703]

>>2693543
>potentially really boost up their technology level
Why tho? What would be the finality of doing this?
If the goal is to maximize human happiness, technological advancement alone helps but is not enough by itself. Technology doesn't solve oppression.

The most important thing to possess would be critical thinking. But I don't see how a lone dork could achieve this in medieval Europe.

[Anonymous No.2704798]

>>2693543
Drill press and screw-based lathe are probably the biggest things. A precise lathe being one of the instigators of the industrial revolution.

[Anonymous No.2705320]

how were the first permanent magnets made?
okay you have lodestones but those are only really useful for compasses
you need to get your inert magnetmaterial red-hot, then put it in a magnetic field and hammer it for the domains to align
to get that magnetic field you'd need electricity and the only way to make it are galvanic cells
and then theres your material choice - iron sucks balls and goid luck getting cobalt/nickel

how DID they make permanent magnets? you'd need tens/hundreds of amps to get any appreciable fields and doing that purely with dissimilar metals dunked in vinegar seems fucking mad

[Anonymous No.2705613]

>>2705320
uhg first strong generators were not permanent magnet powered, shocking as it sounds.

[Anonymous No.2705616]

>>2705613
>were not permanent magnet powered,

where did he mention generators? and magnets don't "power" anything.

[Anonymous No.2705620]

>>2705616
>where did he mention generators?
he didnt, his whole assumption is flawed
>to get that magnetic field you'd need electricity and the only way to make it are galvanic cells
>how DID they make permanent magnets?
everyone who ever drilled steel knows how magnetism can just be created, now a generator cascade is nothing more than an amplifier for that very first weak permanent magnet someone ductaped together from shit he rubbed against each other.
With large currents and electromagnets available they finally could produce "powerful" artificial permanent magnets

[Anonymous No.2705626]

>>2705620

you're a dumbass

[Anonymous No.2705628]

>>2705626
thanks for keeping the post quality up
you nigger

[Anonymous No.2705748]

>>2704252
We have a lot of medieval bows. The Mary Rose sunk in the 1500s with more than a hundred that were really well preserved and there's plenty of individual examples from places around the world and various periods
You're probably thinking of the Holmegaard Bows, the oldest ones we've found so far, which are from the fucking mesolithic. Otzi the Iceman also had a half finished bow stave on him when he died.

[Anonymous No.2706534]

>>2693678
Pasteurization is stupid
>only reduces disease in milk from unhealthy cows held in filthy living conditions
>milk from cows that are fed right, allowed to graze, and have clean udders does not need to be pasteurized
>destroys valuable nutrients and enzymes that made early dairy farming worthwhile
>humans have kept cows for dairy for 10000 years and never had a problem until the advent of industrial dairy production and urbanization

[Anonymous No.2706874]

>>2706534
Raw milk chads

[Anonymous No.2706876]

>>2706534
>I've never spent time on a dairy, but I'm going to repeat everything I've heard

The post

[Anonymous No.2706880]

>>2693543
>>2693560
Electricity is easy to make, definitely should go for it.

[Anonymous No.2706943]

>>2706876
>t.
And pasteurization is still retarded

[Anonymous No.2706985]

>>2693543
>explain to them
Well I don't speak old English, so nothing, really.

https://www.youtube.com/watch?v=mVG77xTPH6E

Maybe medieval French was still close enough to modern French to get basics across, but I doubt it'd be easy to get an audience with people who mattered enough, even if I didn't have to rely on translations.

[Anonymous No.2707138]

>>2693543
Antibiotics, antiseptics, basic hygiene, anatomy & physiology, and germ theory.
Plumbing.
Gunpowder.
Rifled barrels.
Oceanic currents and wind patterns.

With these combined I quickly increase the population of Europe, then invade an annihilate everyone else before things get gay.

[Anonymous No.2707867]

>>2702397
>>2702403
underrated

[Anonymous No.2707917]

>>2693543
teach those retarded roman fucks to put a drain in their public baths.

[Anonymous No.2707934]

>>2706943
No, he's right anon. A dairy isn't like a chicken farm. Cows do graze, and their udders are cleaned every time before milking, and having tainted milk before pasteurization really was a problem. You need to go out to a farm and see how animals actually live before you start going off about how horrible we make it for them, because you don't know what you're talking about. I'm sure you can point out one dairy that breaks the rules and might be somewhat like you're claiming, but I grew up on one, and there were many others around that I helped milk at from time to time, and you're wrong.

[Anonymous No.2707989]

>>2707934
If you follow the right cleanliness procedures you don't need to do pasteurization. I have worked on farms retard. And most people who grew up on dairy farms drank raw milk so you're the anecdotal outlier.

[Anonymous No.2708917]

>>2693543
it would depend on the era, but certain skills are more important than others.

so lets explore a little:

>I want to be the smartest and become the omnisia (god of science)
having a degree in science can get you a golden opportunity but you would have to either luck out and meet a willing craftsman who can translate your ideas or land in a specific situation where your skills are actually useful. You are equally as likely to be passed up for being a "quack" as you could be successful. major potential deaths are hung as a heretic, death by court intrigue, and too valuable to let live.

> I want to become a god of war the merchant-mercenary.
having skills in peacekeeping or just general military skills can take you far and it is one of the most universal occupations, but being a specialist would mostly result in your death on the field of battle. you would choose to either burn fast and bright or burn low and slow. lets just hope you have the muscles of a god and luck of one.

>I want to be the master of agriculture
not a common choice, but it would earn you a place at the kings court, but you would have to grow slowly. your skills at managing food production would have to match your skills at managing people, and these aren't like your Floridian crack heads, whatever genetic trait that made them just one IQ above drooling and empty-headed doesn't exist yet. It is either bread and circuses or your head and a crucifix, lets hope you can out last war, famine, and poor infrastructure.

>a merchant, a groveling sniveling merchant
you would quickly become many peoples friends and enemies. Wealth is often envied by others. if making gold is your only skill then you will likely die with a knife in your back or your chest. Even if you aren't so singular a master, your management skills will have to be well accounted and 6-sigma precise.

>TBC

[Anonymous No.2708921]

>>2708917
>cont.

>I want to be a master of the arts, to inspire others at my leisure.
I mean the gypsies kind of tried this, it is a dangerous route that if you don't take care to do carefully you can easily be ostracized from every tavern, bar and inn. Let us hope you can deal with not having the freedom of speech or have the best possible powers of seduction. pretty good chance of death because of your entitled and coddled beliefs.

> never spent too much time thinking, just doing.
being a skilled tradesmen can be very beneficial for you and is the best middle road, you aren't so controversial that you will be called a heretic, but your products will be grounded and fundamental enough that putting you in harms way is a poor choice. most likely to succeed for the sake of mediocrity.

[Anonymous No.2708956]

>>2708917
>it would depend on the era
At one point mastery of ballistics would get you set up for life.

[Anonymous No.2709162]

>>2708956
>1670-1750.
just before napoleon, just in time for an early steampunk revolution. best options given you can control your destination.

>English colonies in North America
pretty much left alone, modern knowledge of the land and ecosystem would let you absolutely dominate, probably could start the revolution 20 years early if you do it right.

>Germany (Prussia or Austria)
very turbulent but there is a lot of opportunity and was the start of the "hard working" German stereotype. there will be some court intrigue but compared to France it is plenty tame, just opt for a "frontier Provence."

>Manchuria (Korea)
it is a powder-keg, but provides a lot of opportunity and some insane historical figures to be able to work with. do not go to china proper as they are pretty racist/bigoted and it will be hard to establish yourself with your modern ideas or because you might look like an outsider.

>Russia(or Poland-luthania)
if you can get on the Tsar's good side you can basically skip the whole communist revolution and get strait into the post cold war economic miracle. really just having basic life skills puts you way above the average slav and most of you problems are solved by providing more vodka.

>Sweden (or Poland-luthania)
the Swedish king was a baller but very desperate domestically, scandanavian politics are very tame at the top as the king usually is reluctant but on the lower levels is very brutal. so if you can join the kings court you would be fine. just remember the pre-industrial swedes have a different culture and with a good understanding of common law you should be fine, luckily the swedish have more common sense than blood lust.

>ottman/persia
actually a pretty good place to be but it would mean becoming Muslim as there is no way to be atheistic or christian. the ottoman sultan's are pretty smart men who are more interested in good people so plot intrigue basically means your boss will be a different man tomorrow.

[Anonymous No.2709169]

>>2709162
the do nots:

>Spain or Spanish colonies
Spain was pretty draconian but the colonies were horrendous you were likely to die or be abused even if you did try to blend in. changing the minds of power mad idiots is pretty hard.

>France
you could arguably get away with a low profile approach but the court intrigue and living conditions were pretty horrible, you would be the third estate and life sucked for the third estate.

>Italy
I'm not saying don't go here but the reassurance made things pretty hard to get backing unless you are truly skilled, high risk high reward and a lot of enemies. also a good chance the pope will declare you a heretic and have a 7 nation army hunt you down.

>China
particularly near the coast and imperial court. Their Xenophobia was legendary and making a name for your self will be difficult because they didn't really respect intellectual property rights and being an outsider makes things harder as you can make a thing, everyone will know you made it but the first native Han to make it will get the glory, money, and influence. it would be a violent climb to the top and constant intrigue.

>southeast Asia and India
really a total mystery and random, some of India was Muslim so it is really just like the ottomans but everywhere else generally has a load of problems that would make earning favor really difficult as an outsider, they were almost as prejudice as the han but not quite. by comparison a better place to be than China. you will have the European colonization problem in about 50 years, lets just hope you know how to deal with colonizers who have way more money to burn and a blood thirst.

[Anonymous No.2709346]

I think Steam powered locomotives would not only lead to them becoming industrialized, but would have probably meant the Holy Roman Empire would exist today and would have control of the entire Mediterranean Sea and Americas. What would occur is that the HRE connects major cities to a steam train network. Europeans eventually figure out how to power other things with steam (would not take long). Europe remains united because of the interconnectivity. They retake all of the middle east and the northern horn of Africa. The European colonial period began around 1500, so in this alternative history, the Holy Roman Empire would fund the colonization efforts instead of Britain, Spain, Denmark, etc...

>>2693589
>>2693880
>anons stuck in 2008
The whole le atheism shtick is getting old right?

>>2693600
You are over thinking this. You need to teach something that over the entire period could boost civilization.
>>2693604
Sanitation is a fairly decent idea. The only issue I think would be that they would need to quickly invent better farming methodologies or starvation would come rapidly.

[Anonymous No.2709451]

>>2709346
>Steam powered locomotives
It took almost 3 generations after the start of the industrial revolution to get a steam locomotive that could pull a few mine carts, and another full generation before they were capable of any kind of public use. There's no way in hell you're making one in the 8th century without an incredible background in engineering, manufacturing, metallurgy, and general physics.

[Anonymous No.2709624]

>>2709451
Skip pistons and go straight to rotaries: >>2700727

[Anonymous No.2709652]

>>2693543
Sanitation
They'd think you're a wizard

[Anonymous No.2709774]

Invent the work day and the assembly line and get rid of craftsmen in manufacturing. Make whatever they're doing there efficient using modern techniques such as this
Pump out weapons/horseshoes/nails whatever makes sense depending on where the time machine puts me cheaper and faster than earth has ever seen
Use that as a medium through which to introduce modern mathematics / logistics / steam power
Probs what I'd go for after a couple years at a monastery working on my accent and shit.

[Anonymous No.2710016]

>>2709774
that would unironically get you beheaded

[Anonymous No.2710018]

>>2709624
>I solved problem 793 of 947973
Good job anon.

[Anonymous No.2710127]

>>2695095
not much advancements in medicine besides antibiotics and anaesthetization

[Anonymous No.2710264]

>>2710016
Yeah I'm sure pal.

[Anonymous No.2710374]

>Ctrl+F
>Nobody said PV=nRT
Seriously, gas physics alone would propel engineering into the industrial revolution almost overnight. Teach these fuckers the Carnot Cycle or calculus as well.

[Anonymous No.2710891]

>>2693543
anime

[Anonymous No.2712655]

>>2694233
stoneware ceramics for jar + lid with wax for seal

[Anonymous No.2712656]

>>2693608
>Plumbing is be way too expensive since in it's basic form you have to dig in a lot of valuable metal
This is a retard take, what about terracotta piping?

[Anonymous No.2713478]

RqkO7oV5)
>not already here.
/g/

[Anonymous No.2713483]

>>2693562
Firearms were being used much earlier than most people think. It just took time for them to exceed the effectiveness and speed of bows.

[Anonymous No.2713965]

Spiral water hose pump. Move water uphill using the flow of the river.
Instant legolas repeating bow. Check out the slingshot channel to see how easy it is to build and use.
Geothermal cooling/heating. Pretty much and earthship house design techniques would be easy to pull off with no tech.
Airfoil shapes. You could improve the hell out of windmills.
Shoes. Medieval shoes sucked ass. Rubber trees exist so you could Improve soles easy.
Biggest one. I know where the new world is. If I go back far enough I could have it for myself. Set up friendlier trade agreements with native Americans and not fuck them over or wipe them out with small pox.
Penicillin. Pasteurization.

[Anonymous No.2713971]

>>2713965
forgot the name, wirtz pump
might be expensive to make the spiral out of metal, maybe ceramic would be easier? either would be worth it for infinite water pumping for free

[Anonymous No.2713976]

>>2713971
legolas bow
https://www.youtube.com/watch?app=desktop&v=xH2uVMJTt2s&ab_channel=JoergSprave

uses 2 bows facing each other to reduce the pull weight massivley, plus has an all wood magazine system to auto reload a bunch of arrow. He made a shit load of videos showing how to make it and lots of possible extra features.
Even the concept of ironsights weren't invented until 1400-1450 ish. Lots of ways to improve guns/bows.

[Anonymous No.2713980]

>>2713965
earthship design example. The concept of airflow and thermal convection would be pretty cutting edge. Glass windows wouldn't be easy to source at all. You could either replace it with bottles stacked sideways or with a thatch roof type material in place of the glass to let in some light, but allow airflow.
Alternatively you could invent a better method of making glass. With a big enough furnace you could theoretically invent float glass

[Anonymous No.2713987]

I'm an artist so I would teach them how to fucking draw. Maybe invent the printing press and movable type. Invent screen printing.
Invent the sandwich.

[Anonymous No.2713993]

Thermae Romae. Roman + Japanese style bathhouses. Imagine if the medieval era had spas and everyone didn't smell like shit all the time. Maybe prevent a plague or two.

[Anonymous No.2713997]

modern hügelkultur techniques paired with guild planting would be pretty new to lots of areas. Not really heard of until the 17 or 1800s? might require importing plants from pretty far away, so there could be a big startup cost if you want corn, tomato, potato and don't have access to north american crops cheaply.

[Anonymous No.2714000]

passive water filtration

[Anonymous No.2714002]

>>2693543
Chains, and gear systems, and the ways to manufacture them cheaply and effectively with basic drop forging.
I know enough about bicycles that I think I could explain every part of making a basic bicycle from start to finish, then assembling the bicycle. Basically give medieval people cheap and reliable transportation.

[Anonymous No.2714262]

ok I got it.
Invent factory farming for chicken.
Invent fried chicken.
Everyone becomes addicted to cheap fried chicken.
Everyone gets fat.
Get insanely rich.
Get all the bitches.
The bitches have fat asses hundreds of years before they were invented in 1992.

[Anonymous No.2714323]

surface plate, ruler, gage blocks, micrometer

[Anonymous No.2714325]

>>2704424
This was never a thing that happened. Burning people at the stake was a distinctly Early Modern Period Protestant phenomenon (Anglican, Lutheran, and Calvinist countries).

[Anonymous No.2714364]

>>2714325
>This was never a thing that happened. Burning people at the stake was a distinctly Early Modern Period Protestant phenomenon

Utter bullshit. Later witch trials may not have had anything to do with the catholic church, but burning people at the stake was absolutely a punishment imposed under the authority of the church.
Ever hear of Joan of Arc?

>She was put on trial by Bishop Pierre Cauchon on accusations of heresy, which included blaspheming by wearing men's clothes, acting upon visions that were demonic, and refusing to submit her words and deeds to the judgment of the church. She was declared guilty and burned at the stake on 30 May 1431, aged about nineteen.

>The first recorded case of heretics being burnt in Western Europe in the Middle Ages occurred in 1022 at Orléans. Civil authorities burned persons judged to be heretics under the medieval Inquisition. Burning heretics had become customary practice in the latter half of the twelfth century in continental Europe, and death by burning became statutory punishment from the early 13th century. Death by burning for heretics was made positive law by Pedro II of Aragon in 1197.
>In 1224, Frederick II, Holy Roman Emperor, made burning a legal alternative, and in 1238, it became the principal punishment in the Empire.
>When the Council of Constance assembled, Jan Hus was asked to be there and present his views on the dissension within the Church. When he arrived, with a promise of safe-conduct, he was arrested and put in prison. He was eventually taken in front of the council and asked to recant his views. He refused. On 6 July 1415, he was burned at the stake for heresy against the teachings of the Catholic Church.
>Many scholars think that the first time death by burning appeared within explicit codes of law for the crime of sodomy was at the ecclesiastical 1120 Council of Nablus in the crusader Kingdom of Jerusalem.

[Anonymous No.2714366]

>>2714325

>The medieval Inquisition paid little attention to sorcery until Pope John XXII was the victim of an assassination attempt via poisoning and sorcery. In a letter written in 1320 to the Inquisitors of Carcassonne and Toulouse, Cardinal William of Santa Sabina states that Pope John declared witchcraft to be heresy, and thus it could be tried under the Inquisition.

>It was hoped that heretics would see the falsity of their opinion and would return to the Roman Catholic Church. If they persisted in their heresy, however, Pope Gregory, finding it necessary to protect the Catholic community from infection, would have suspects handed over to civil authorities, since public heresy was a crime under civil law as well as Church law. The secular authorities would apply their own brands of punishment for civil disobedience which, at the time, included burning at the stake.

[Anonymous No.2714403]

I'd go to Africa, gather up a bunch of chimpanzees, and start a monkey meat farm.
Get AIDS started really early.

[Anonymous No.2714407]

>>2713997
>Chad Holzer's Permaculture

>>2714002
How do you make it without the chain slipping all the time?

[Anonymous No.2714418]

>>2693543
I recently discovered there's a manga about this essential premise.
They already had the component materials for lead-acid batteries.
As for things to introduce, the lathe and steam engine are go-to.

[Anonymous No.2714497]

>>2693603
this will made america colonization impossible

[Anonymous No.2714508]

>>2693604
>Sanitation and vaccines for all communities
Sanitation is the more important one and looking at data is the real and more important reason we got rid of particular diseases.
Vaccines are unironically hyped up with little data to back up their efficacy.

[Anonymous No.2714510]

>>2701593
I suggest looking into history of polio vaccines. Not fun stuff, lots of dead children and not from polio.

[Anonymous No.2714522]

>>2713993
Bathing isn't foreign to the medieval period (not even spa style public bath houses; that was more or less the norm). And the plagues were more a problem of rat fleas than anything (assuming we're talking bubonic).

[Anonymous No.2714529]

>>2693543
teach them code. Learn their ways of laugh (censorship?) and preserve the kingdom

[Anonymous No.2714533]

>>2693543
Condoms

[Anonymous No.2714535]

>>2714522
so you're saying we should invent rat spas

[Anonymous No.2714576]

>>2714535
I'm saying you should burn any ships coming from east Asia to the waterline (it's the source of the rats). Be aware this might cause most merchants to kneecap you on sight.

[Anonymous No.2714879]

I wouldn't try and tell them what to do or what to make.
I would listen to what they had to say, which is what no one did.

[Anonymous No.2714882]

>>2693543
could potentially make something like a laser cutter up to perhaps 3000 years ago, but would probably take a lot of effort and getting it wrong, along with requiring a lot of prerequisites and being pretty inefficient

[Anonymous No.2715225]

>>2693543
Chain saws and steam engines.
I mean I know that there were saws with chains. but I'm something more modern in design for sure. Stean engines were very close to becomming reality long before the middle ages, but during the breakup of the Roman Empire, many technologies just were lost for awhile. Although to be fair, steam engines were fairly complicated, So I would say that kicking a king in the pants and gifting him a steam engine for pumping water or moving mining material or something would have been a huge leap.

[Anonymous No.2715231]

>>2693543
Hello local blacksmith
I need you to make a weave of this copper for me.
>What?
I need you to weave this copper I have into a wire, like I have illustrated in this picture, I will pay you handsomely with all of this gold if you can do it.
>Alright, what shall I infuse it in?
No I mean I just want copper.
>Not bronze?
No.
>Not iron?
Nope. Just the copper will be good.
>You know I can strengthen this stuff right? What are you trying to build with it? Some kind of trap? A weapon? A tool?
No I just want the wire.
>Well if you don't mind me asking, what's the wire for?
I'm going to use it to conduct tiny amounts of lighting through it so that it might carry the energy therein, hither from this generator.
>Bahahahahaha you're gonna kill yourself with lighting? And what's that "generator" gonna do for you? Stop the lighting? Hahahahahahah
No it's going to make small amounts of lighting. And I'll bottle the lighting in these jars.
>BAHAHAHAHAHAHA, that's a good one mate, oh you crazy bastard well, look I don't need to know what you're gonna use these for, but be careful around lightning yeah?
ok...

[Anonymous No.2715238]

>>2715231
If you have managed to source the copper you can also work it yourself.
And electricity isn’t the biggest wow, you think people are going to have ifruits to plug in?
>portable power source
Big woop, a can of ethanol has same portability.
Maybe if you can convince a glass blower to blow you, and then suck in turn, you could have clean light, that’s kinda neat.

Otherwise, start an oil industry, much more energy to be had free there.

[Anonymous No.2715300]

>>2693543
>explain them how to create electricity
>get called a spawn of satan and be burned

[Anonymous No.2715319]

>>2693644
Sulphur is the trickiest one, but iron oxide (rust) can be substituted, if you can't figure out charcoal, I can't help you, lol, but one of the best woods for black powder charcoal is willow, one of the most wide spread organisms on the planet, so that's easy, and salt Peter is just the flavor crystals left over from when you go peepee on the same spot o ground for a long time. I can't remember when the noble chicken reached Europe, 500ad? but think they had domestic geese before, anyway, dirt under chicken coop is way more concentrated salt peter than human peepee.

[Anonymous No.2715321]

>>2715238
I realize it would be kind of useless so I was partly joking.