How the Ancient Greeks Proved that the Earth was Round
Вставка
- Опубліковано 10 жов 2019
- The story of how the Ancient Greeks and Eratosthenes proved that the earth was round over 2,000 years ago!
Thanks for checking out RealLifeLore2! The world is an amazing place that offers so much to explore. Join RLL2 as we dive into an array of interesting topics in the areas of Engineering, Science, Technology, and more.
Be sure to subscribe: ua-cam.com/channels/qmD.html...
Animations courtesy of Vincent de Langen
Never underestimate the power of a stick.
Every flatearther should get stick for christmas.
Especially if it's wielded by a 2nd grader.
*insert lenny face here*
And never underestimate a droid
How to set up a measuring stick.
*ua-cam.com/video/seQcTyREa3E/v-deo.html*
TLDR: you can disprove the flat earth society with a stick and a man counting his steps.
There was a guy in the 19th century who asked a scientist to prove the Earth isn’t flat, the scientist used a stick and put it on the river and put a telescope to see the stick, if the stick was in the height as he was close to it the Earth was flat but of course it wasn’t. The guy who said to prove it didn’t believe it, the first ever flat earthers in recorded history
XD
@@JamesTheFoxeArt if the stick was in the height? I didn't understand. Please explain
Aaryan Kumar if the stick was stuck on the shelf of the shingled boat, then subsequently it would sub-equally, sublime and supersede superior sublimation statutory situational stations. Duh..
@@Zman44444 XD sssss
Greeks thousands of years ago: this proves the earth is round
Flat earthers today: NASA conspiracy
Apparently flat earthers believed NASA time travelled to bribe the Greeks to tell the earth isn't flat
With trump dollars of course :))
@@archingelus Hmm. Perhaps
@@archingelus Well the crazier conspiracy hypothesis people believe, the more likely they are to believe in more than just few of them so quite a few of the flat earthers probably believw in time travel as well.
stop mocking me!
Eratosthenes was also apparently nicknamed "Beta'' by his peers, both as an insult and compliment (depending on who said it) because it is said that he wasn't the best at anything, but second best at virtually everything. (i.e. he wasn't THE master expert at any subject, but he was a respected expert on the vast majority of them). Which is honestly more impressive then being a master at one subject.
Jack of all traits, master of none? Huh, I'll remind you that back then it wasn't as rare to be what in Greek is called Πανεπιστήμων, that is Universal, knowing all sciences. That's because they weren't that many. Philosophy, Geometry, Astronomy and Medicine. Not that many more.
@@georgios_5342 yeah, nowadays it would be impossible but back then it'd be doable
@@adonissherlock The idea of "homo universalis" in the Rennaisance, that every person should have at least a basic a spherical knowledge of the World, was based on that ancient Greek model.
So he was a jack of all trades?
Being second best at everything is infinitely more impressive and useful than being the best at one thing
*Only 29 dislikes*
They haven't discovered this video. Yet.
Can't wait to see Flat Earthers storming in the comments
I'm here ... THE EARTH IS FLAT !
@@hakrj12 roses are red
Violets are blue
A man from 350 BC
is smarter than you
People who think the earth is flat are dumb people and have no brain
107 now
It blows my mind how over 2,000 years ago there were people that knew the Earth was round and estimated its circumference but in the modern era there are people that still actually think it’s flat.
*BuT But KarEn'S FacEbooK SayS sO!*
I agree
Earth is round🌏
Its weird how people start the world at 2000 year and anything before that is over 2000 years ??!
Yeah even the Bible says it
The earth is unfortunately flat
How to confuse a flat-earther: Ask them how does the Flat Earth Society have members all around the globe.
But seriously, it's even easier than that to mindfuck a flerfer. They don't have that much mental RAM.
@@sethadkins546Ask them about why whirpools exits ;)
ua-cam.com/video/J_CaXYe-63k/v-deo.html👈🏻👈🏻
How come there is no such thing as a flat earther who controls a satellite? 😂
Ask them why do the call it atmosphere and not atmoflat
Eristhophenes: “ this proves the earth is round...”
Flatearthers: “ maybe it was in your day, but it flattened out since then”
If earth was flat there wouldn't be whirlpools!!!
its actually Eratosthenes and in Greek Ερατοσθένης
@@consoldier__7846 thankfully you saved us all from certain misspelling demise 😂
@@dr.michaellittle5611 ancient greek names can be really tricky tbh
Aristotle: "The earth is obv round"
Flat Earthers: **mad**
Flat earthers: goddam aristotle was a capitalist CIA funded NASA fanboy
archingelus 👁👅👁
Flat earthers be punching air right now.
Aristotle was wrong in many things. The earth is still round tho
Yeah. They used cell phones to call each other 800 kilometers away to check on shadows
The ancient Greeks were much smarter than modern flat-earthers.
The ancient greeks smarter than most people, even today
The ancient Greeks were some of the all time smartest people in human history
All so true
Ancient chickens were much smarter than flat earthers
cmon man my autistic mouse is smarter than flat earthers
Credit to the pro walkers, lest we forget.
RIP
And then he lost counting in the middle of Nubia desert. Had to go back again in Alexandria!
So let me get this straight. Ancient civilisations from 2,000 years ago could prove the Earth was round and yet there are still people to this day that think otherwise?!
yes people are just like that
you can prove a fact through experimentation and demonstration. A baseball bat can't dislodge a stupid belief. Many still believe the sky is blue due to sunlight reflection off the oceans and not refraction of the light in the atmosphere. Can't shake a belief.
Amazing how smart ancient philosophers and mathematicians were.
People were always as clever as now, you just need the environment to cultivate them
Great video, but a minor quibble: at 5:16, it should read 2% of the Earth's circumference, not 2% of the Earth's surface. Otherwise, top notch!
I felt so smart noticing that lol!! lol!!
technically the surface a planet includes all matter on the surface both land and water "Most of the Earth's surface (70%) is covered with water, and the remaining 30% is taken up by the seven continental landmasses. However, underneath the water that fills the oceans, and the dirt and plants that cover the continents, the Earth's surface layer is made of rock."
@@bladeofveng Yes, but the earth's surface is still a 2-dimensional measure - an area. Saying that "the *distance* from Alexandria to Syene equates to roughly 2% of the total (area of) earth's surface" is strictly wrong. It helps to deal with units and symbols, so here are the exact measures to which he was referring:
using "surface":
800 km ≠ 2% of 510,100,000 km²
800 km ≠ 10,202,000 km²
using "circumference":
800 km ≈ 2% of 40,075 km
800 km ≈ 801.5 km
@@tales9476 ?
@@bilalthefighter829 What is it?
‘How Ancient Greeks proved the Earth Round”
Flat Earthers: *Internal Screaming*
Flat earthers:goverment telling us lies
@@talentleesdorito9771 also flat earthers:
*Still doesn't have real picture of flat earth*
Aristotle is obviously working for the US government
@@FoxyBoxery no he works for the reptilian Jewish Freemason NASA penguins
The shape of the earth has been known for 2 millennia, but flat earthers still can’t get it through their skulls
They are dumber than a person who died in 350 BC
That knowledge can't fit into their brains because it is flat
Me : *sees title*
My first reaction: checkmate, flat earthers
It's really fantastic to think that ancient Greeks, having almost no tools, still discovered and set the beginning of most of the words sciences!!
Absultrly false.The Greeks were mathematically challenged , Aristotle beloved in Doxa as truth. There was no concept of due diligence and thought experiments were prohibited. Stop eulogizing the Greeks because they were Europeans
@@arunjetli7909 Yea. The Greeks Used Trigonometry...Sorry you fail
@@jkranites really only shades of Egyptians The Greeks were mathematically challenged
@fI1cker check your history from un prejudiced sources
Aryabhatta calculated the circumference of the earth within 68 miles
the Europeans have created a myth about
“ The Greek miracle”
knowing that they believe in the jesus miracle I can understand the mindset
nowadays transformed into the exclusivist jingoism about America
@@jkranites tell me where?
Ancient Greeks: *discover the Earth is round and calculate its circumference
Flat Earthers: The Earth is flat and NASA is lying to us
Ancient Greeks: Am I a joke to you?
History is also a lie made up by the government according to them
People: yes you pretty much started pedophila, participated in child sacrifice and Adrenochrome, glamourized the Nephilim's as Blasphemous Gods and Lied to the world, and classified Pedophilia as mental illness in the modern world instead of putting people behind bars. Ill do my own research thanks.
@@rickryoshi40 The adrenochrome conspiracy theory was ripped from the plot of a mid-20th century science fiction novel. There is no immortality chemical and even if there was, it definitely wouldn't be found in children. And your criticisms of Ancient Greek culture are very egotistical given your intolerance for ancient peoples and their religions. While we can sit here all day and talk about a dead civilization that allowed pedophilia, it will never be a productive conversation for either of us, so maybe you should be quiet and continue to work on that research of yours, m'kay sweetie? 😁
@@TheTrainmobile its in the bible my friend.
@@TheTrainmobile you have a very narrow scope of historic education. child sacrifice is prevalent throughout history and the pineal gland if literally spoken and represented nonstop. You think the adrenal gland is any different? I don't know why stupid people who are wrong (you), always have to act like vile assholes as well. can you explain that to me. What's REALLY your problem?
3:43 “preform simple calculations”
Proceeds to write advanced Algebra and advanced geometry
havent seen any advanced algebra in the video brooo
Eratosthenesthes calculation
εφα=ΖΛ:ΖΘ =ΖΜ:ΖΡ
ΖΘ and ZP is the length of the stick
ZΛ and ZM is measurement of the shadow
α = shadow angle
ΘΛ and ΡΜ = light of the sun parallel to earth
it really is primary school stuff: simple geometry (3rd-4th grade stuff), maybe you didn't pay attention
It's not advanced. You are probably not Asian
Am I the only one who is searching for angry flat earthers in the comments?
me too!
Works even better if you sort by new
Sup?
You won't see any here. They're heavily outnumbered.
Sorry, but the earth is a dinosaur. You can't change my mind
Rise up dinosaur earth gang
@@doorstopper674 Nonono, pyramid
@@kytkinpommiakytkinpommia8254 No, it is clearly a 5D tesseract!
Nah it’s a donut
I can’t even imagine how messed up he was after realizing how much suraface area the world had. He must’ve been (at least secretly) convinced that there were huge swaths of land unknown to his society
Just how we think of outer space today...
Hey! I'm so exited for seeing more videos! Real life lore 2 is gonna rock!
I have give him a lot of respect for what he was able to accomplish with the tools he had at the time
I've heard a French youtuber say that bematists actually had camels and counted their steps, since camels were known for their "accurate step".
Alexandria not being directly north of Syene compensated the distance measurement error.
If he assumed the NNW direction and compansated it, or measured the 841km, assuming it directly north... the result would have been 5% smaller (38Mm) or bigger by 5% (42Mm)
Santiago M. Ferreiro Awesome observation,m8!
Never thought of that!
Yep, first thing I noticed. Two small errors that compensated one another.
Sorry RLL, it's not you, it's me
*dumps RLL, starts dating RLL2*
Oh no poor RLL :(
@Phaisto Siva more like breaking up with a pen pal and then dating his alt penname
@@reallifelore2174 this is a very creative name it basically means Real Life Lore^2
Great video. I love looking out the plane window as the sun goes down and seeing the curvature of the Earth. We in the modern world are blessed to see this.
Mate this is 2000 years ago that is close enough for me
With the help of a stick and a pro walker. The margin of error was only 0.2% for the equatorial diameter and 0.02% for polar diameter. Considering the scale of Earth.
Amazing video! A really elegant mathematical approach to a complex problem, really elegantly explained. Thanks!
FINALLY an ACTUAL answer to the method he used!! Everyone is always like "well he put 2 sticks in the ground hundreds of kilometers away and measured them at the same time, and that's how he got the measurements" like whaaaat?? Did he have a radio? How did he know the difference between the shadows AT THE SAME TIME?? Lol.
So it was the knowledge of the well being right under the sun at noon on the solstice and the stick having a tiny shadow and hiring a guy whose job it was to measure distances between the two.
Man, lucky he noticed the well thing, but I imagine that was common knowledge since it's an interesting phenomenon
People today: spent billions of dollars for spacecraft and aircraft to accurately measure the Earth's circumference
Eratotshenes and the ancient Greeks: "Look at what they need to do to mimic a fraction of our power!"
He wasn't just close, he was exactly there!! When taking into account 40.000 kilometers, the 74 kilometers are nothing, especially using just a stick!! It was as close as anyone could get, and it was exactly there!!!
was I the only one knowing the story and just clicked the story to check the comments for flat earthers?😂
I just listened to flat earther David Weiss on Chris Jerichos podcast and his response to any kind of scientific proof against a flat earth is basically “nuh uh”
Back then they measured distances in stadia, nowadays we measure the degree of failure of game streaming platform launches in stadia.
How times change!
Your videos are great and deserve more views
;)
Excellent, very complete and well presented explanation of the original and often over simplified story.
People like Aristotle are beyond legendary
EngravedinDeath ....him too, yeah ;)
As a person who reads about Galileo and other ppl growing up u will often thought he was this old strict figure blocking the way of science discovery and enlightment
But this dude does do some cool things
the most overrated philosopher who was wrong about 90 percent because he believed not in science but doxa or prejudiced opinion he ruined philosphy snd debate that were vibrant with Parmenides snd Plato the west prospered only after Aristotle was trashed He is full
of himself in his monologues with no inductive logic only prejudiced opinion as the foundation
@@arunjetli7909 Thats your opinion brother.
@@em34ev3r an opinion based on facts, an evidence produced by the west is Doxastic with no logoc
In Sanskrit we call Geography as भूगोल (bhugol) bhu means earth and gol means circle. About 5000 years ago.
circle =/= sphere
In Greek, the language the word originated from, we call it Γεωγραφία (Geographia) Γεω is a form of the noun Γη, which means Earth, and γραφία is scripture, writing. So it's writing about the Earth.
i hate sanskrit
@@mohammedhamza5528 u hate a language?
@@mohammedhamza5528 is that one sided love from Sanskrit ?
Bro that's fucking wild. Boy almost determined the exact circumference of the earth using a stick and a random dude to walk. Only was off by a little bc the dude who walked all them miles. Wild. I'm impressed
3:17 that wasn't just a stick, that was a gnomon. An achiant Greek astray sort of thing.
Great video.Thanks .
He calculated the polar circumference is 40,000km, but it’s actually 40,008km? IDK man that’s basically perfect. If you ain’t putting a satellite in orbit or flying an international plane, that’s all the precision you need.
There were two errors that cancelled themselves out. Aswan is not due south of Alexandria (too high a distance used) and Aswan is slightly north of the tropic (too low a distance used). But it is an excellent first attempt.
Whether he really came up with such an accurate result is up for debate, but the methodology is sound.
Flat Earthers be like: The ancient egyptians are using fisheye lenses
No, we say cool story though… in 2024 it is so obvious earth is an enclosed stationary level plane and you know it but your pride has you holding onto your ball… The Santa lie was traumatic to you…
Thanks for sharing it 😇
It's amazing.
Aristotle: "The earth has been proven to be round and I hope the future genrations will know this as a fact."
Normal people: "The earth is round, and has been proven by many with modern technology."
Flat earthers: "I can't see no curve on the earth so this is a conspiracy by the government! REEEEE!"
Aristotle: "Oh Zeus! I beg you to smite thee idiots that think the earth is flat!"
5:17 May be nitpicking but I think it'd be more accurate to say "circumference" than "surface".
People really out here making fun of Americans for using football fields as a reference when Greeks used stadiums as their official units of measurement
I also like *AMERICAN FOOTBALL* fields too (aggressive European stare into your soul)
or they used Google Stadia controllers as a unit of measurement
just remember that it was 2000 years ago when there were no reference measuring units
@@IdRatherNotHaveAHandleThankYou Gotta use those gender neutral units of measurement amirite?
Thank you for these useful info❤
even more RLL a like content could it get better?
Ancient Greeks: *worked so hard to prove the earth was round*
Flat Earthers: *X to doubt*
Maybe someone can help me with a question that always bothered me when I heard of this experiment. How did Aristophanes measure the time so perfectly? How did he know that he was measuring at exactly the moment in Alexandria, when the sun was shining into the fountain in Syene?
Probably this question has a really obvious answer but it bothered me for years already. Please let me know the answer :)
It was Eratosthenes (Ερατοσθένης), not Aristophanes (Αριστοφάνης).
Aristophanes, also known as the father of comedy was a comic playwright and a poet.
About your question, they used solar clocks back at the day. When it's exactly noon, then everywhere except the equator (as in Alexandria) the sun creates the smallest shadow than any other time. But in Syene it drops no shadow at all (like the well had no shadows in his observation).
That's noon for both cities.
@@IoannisKrouskas Thanks for answer, correction and elaboration, that makes perfect sense!
Aristophanes probably measured time with fart jokes. He had 5 min, 15 min and half hour (approx.) jokes he’d tell one after another constantly. He could time them through the iambic pentameter.
The exact time was easy to determine. When the shadows were at their shortest.
at 5:16 it should say circumference and not surface.
Despite that excellent video, other videos are missing a lot of information and this answered all my questions
Now we know why Professor Stick calls himself Professor Stick.
I knew this since I was five years old because I'm Greek myself.
ua-cam.com/video/J_CaXYe-63k/v-deo.html😊😊
You knew the Earth was round?
2023: Flat Earthers can't prove the Earth is flat, despite all their talk about refraction and spirit levels on planes.
200 BC: A man proves the Earth is spherical using the sun and a stick.
The earth is spherical.
I would have loved to have seen the country which produced such philosophers as Socrates and Eratosthenes. It pays to have a big empire so that you can see parts of the sky from various locations.
Gotta love the Ancient Greeks1🤗🌞
Love the video but you have one mistake. At 5:15 it's not 2% of Earth's surface; it's Earth's circumference.
People believing in flat earth just shows how humans can literally believe anything regardless of fact if they make convincing arguments.
and people wonder why politics is so full of misinformation
Only issue is the Flat Earth Theory makes no convincing arguments.
Background music is lit🔥
I need to see this 2012 experiment!! Where’s the link?
Ancient: Round Earth proved with sticks & stones.
Modern: Welcome to the Flat Earth society.
ua-cam.com/video/J_CaXYe-63k/v-deo.html😊😊
I read: How the ancient Geeks proved that the Earth was round.
Also accurate
Ngl the step counter dude was low key more impressive
It is so useful video for us thank you so much 😊 for we to rich
Who would win...
A Greek dude with a couple sticks
Vs.
Karen on Facebook
Rock, take it or leave it
why dont you have the same voice in your 2 channels??
Manu the second channel is his friends
@@lncpqia_yt193 yeah i got informed about this lately
very good
In essence, Eratosthenes measured the circumference of the earth at about a 20-degree angle to the equator. So if the circumference is 40075km at the equator and 40008km at the polar, wouldn't that mean the circumference of the earth at the 20-degree angle to the equator is somewhere in between 40075km and 40008km? Wouldn't that mean that Eratosthenes' results were even more accurate to what he actually measured?
Theres gonna be at least one flat earther here
i already saw one :D
I clicked for all the flat earth memes. I have not been disappointed.
3:45 what does any of that picture mean?
i dunno what im more shocked about, the fact this ancient greek don calculated the size of the earth so accurately or the fact that there is a second RLL channel and im just hearing about it?!
Doesn't the coastline problem apply to Earth's circumference?
Sea level
Education falls flat before those who do not believe that Earth is a globe.
I always thought it was the librarian of Alexandria who actually did the work to prove this so learning about the shoulders he stood on is legit and I'm sharing
yea they studied and gained infinite knowledge that came from Africa . i’m not sure what’s so hard about being honest here. i guess when u conquer u get the perks of being dishonest.
Person from the future: Oh my God, Aristotle! I can't believe this time machine works. I come from the future!
Aristotle: For real my G? That's sick. What can you tell me about the future?
Person from the future: Oh uhh, nice accent. Well for one, the Earth is actually flat. Yeah, it's all a NASA conspiracy.
Aristotle: Wait... no it's not... and what's a NASA?
When Flat Earthers realised a guy discovered the Earth is round 2000 years ago
“Actors! Actors! *ACTORSSSSSSS!!!* ”
the greeks were paid by NASA
Interesting video! Good script-I wonder if you could write in more jokes in the future? eg. 'this is because of the slight bulge Earth has around its middle due to the after-effects of Christmas'
in greek mythology, aries (or whoever you call him) was punished by having to carry the weight of earth for eternity. the earth was portrayed as round
What happen to his voice? It went like a octive higher
Maybe a new microphone?
Different guy
it's a different narrator
Earth 2 is coming soon the developers haven't announced the release date lol
Joel Isac yeah the current servers are overheating and lots of glitches are appearing, like the Brexit mission is not possible to finish due to delays caused by faults in the main characters
@@theoclarke6817 i'm sure that's just a bug in the EU scenario.....
@@theoclarke6817 Only the EU servers are experiencing this issue.
should thr stick shadows measured at the same time ? how to sync the time in the old day.
where have i heard the background music at the beginning of the video before ?? this is driving me crazy
Jackson Is Cool Oh my god what is it. I heard it before as well.
Sounds like a soundtrack from Interstellar
3:40 *ocular trombose*
Me: so when did this happen
Historian: ancient times
Me: and when is that
Historian: very long ago
Me: and even to this day some depressed meats still think the goddam* world is flat
The entire library: (._.)
The nuclear reactor 50 miles away: (o_o)
The SpaceX laboratory/scientists on the other continent: ( ˙-˙ )
Flat earthers: -that’s fake-
The fact this guy was 75km off in the calculation of the earths circumference is INSANE
And still have people in the UK and US believe earth is flat.
If the earth was flat asteroids that collided with it would've crashed right through it and leave a giant hole in it.
when you realize the greeks where measuring with stadiums before us americans and are football stadium
If only the library of Alexandria hadnt been destroyed, humans have had access to so much scientific wisdom ages ago
Not to mention a more accurate history of that area of the world.
Ankush L Too many people buy that narrative, there’s plenty of other library’s around at that time that weren’t destroyed with just as much knowledge as the one in Alexandria.
@@chaoticwj1772 Which ones?
@@chaoticwj1772 Nothing compared the Great alexandria's library
Discovered over 2000 years ago, and still we have flat earthers
One thing I’m wondering is. Do flat-earthers deliberately look for videos that say the Earth is round so they can have something to scream about?
I do same for FE videos, so...
Only two flat earth votes down.
😂
Eratosthenes was a time traveler confirmed
"tHe EaRtH iS fLaT"
I thought everyone knew that Aristotle did this... this is the curriculum haha