How The Ancient Greeks Proved Earth Wasn't Flat 2,200 Years Ago
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- čas přidán 13. 07. 2018
- In the mid-20th century, scientists began launching satellites into space that would help determine the exact circumference of the Earth. But over 2,000 years earlier, a man in Ancient Greece came up with nearly the exact same figure using just a stick and his brain.
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The burning of the library of Alexandria was humanity's greatest crime.
My eyes become wet just by thinking about it
It was never a single attack or occurrence like people think it is. It fell over the course of hundreds of years through various attacks and just change in culture and time. There was never a fire that burned it all down in one night.
I am Egyptian and I can tell you If it wasn't burned then you may found the books under tables in WC and every where except the only place it supposed to be in as every other thing in Egypt
@@mosup5007 What do you mean by that?
No it's not. The grand libraries of house of wisdom was, the Tigres river turned black the day the mongols sacked the city which help libraries that was collectively far greater than what the library of alexanderia was, simply because there was paper by that time
They didn't have tinfoil to make hats with
Poor ancient Greeks couldn’t defend themselves from alien mind-rays. I pity them...
But what nobody realises is that tinfoil was invented by the Illuminati. Yep.
Back in the days, when we have too much time in our hand, we make science, and not memes..
Good
It make sense
Luke Skywalker we have evolved to a higher being
I did a science! store.dftba.com/collections/its-okay-to-be-smart/products/okay-to-be-smart-science-shirt
Yeah well said
Who would win?
Ancient people with great intelligence that also has alot of works proving that the earth is a sphere because they measured it with their brains and evidences
*Or*
Some -1 iq flat earther boi
get a telescope and start observing objects over water. You wont find curvature. This experiment doesnt prove the earth is round. It assumes "parallel rays" from the sun.
@@chuckhough chuckhough If u position the moon and sun like that then the phases of the moon should always be 🌓🌗
and not 🌑🌒🌓🌔🌕🌖🌗🌘
, and how can u explain the solar and lunar eclipse? (if u can't answer this then that means flat earth is wrong)
@@kilimanjaro1893 that's assuming the sun is lighting the moon.
@@chuckhough so you mean the moon is shining itself? so if we zoom in closer to the surface of the moon we can see its immiting its own light? How do you explain solar and lunar eclipse?
@@kilimanjaro1893 again. How do you get the shade on the moon facing the opposite direction?🤔
Tell me
In 2018 we still have people thinking it's FLAT...
Midnight Cravings I wonder if they actually believe it or are they just being awkward? I can’t make up my mind.
What if it's just one big prank and the flat-earthers got us good? That's what I like to believe.
FLATTTT!
Nick Gray no i actually believe it
*Midnight Cravings*
The Earth _is_ FLAT.
From the perspective of an observer traveling at 0.999999999999991C, the Earth would be 17 meters thick.
Lol some ancient bois were smarter than those flat earthers.
Edit:Why has this comment more Likes than the who would win comment
Just because someone lived thousands of years ago doesn't mean they cant be smart, they just lacked some knowledge we have.
These ancient boys were way smarter than you
Johnny 10 how can you know that
It seems highly likely that the head of the library of Alexandria, one of the most important centers of learning in the ancient world, who made one of the most important discoveries of ancient science, is more intelligent than some random twat on youtube.
Happy Melon ik
This guy found out the circumference of the Earth with a STICK
And nowadays we prove it by using SATELLITE IMAGES, and other high tech stuff and so many people still think the arts is flat
There is a ice wall called a ice wall aronund the earth there is a firmament over top of earth extending to the ice wall .if u go find a encyclopedia from before 1958 they plainly tell all of this ..so since 1960s the 1% non of us.has been altering reality..but im guessing all these space odessy people think the encyclopedia info was just watever someone chose to write but the someone created nasa and changed the well most knowledge about upper atmospheere and suddenly the most of you thought hey they keep lying not saying what they started out saying so all that past info was bs Nasa has all the true anwsers???..wat about admiral richard byrd?? Oh u nuts think he was delusional ???Jesus is calling..
I can't believe flat earthers still exist
Weird huh? All this proof and they exist. How odd
It's only 1 proof that these dumbasses give you that is not even proof.
It's only 1. It's like they can't do better
Well farts still exist?🤔
Many more creationists still exist. Both dumb as each other
@@loveorange4658 idk how, since gravity should work on farts too 🤔
this is possible one of the most amazing thing a man has done. Ancient people have such great minds, and it's absurd that people today would think pyramids were created by aliens
Lol this doesn't compare to the construction of the pyramids even 1 billionth of a percent. It is damn clever tho
they weren't created by aliens, they were created by the lizard people
Has nothing to do with the pyramids. I however am always amazed how you can be so intelligent
No I disagree. The advanced sophisticated building of the great pyramids was probably done with the aid by a much more advanced intelligence such as aliens.
We have a great mind too, but have become stupiditised by the controlling societies 😂
how ironic people 2000 years ago already figure out that earth is not flat.. but yet in this 21st century, with all the technology and unlimited internet discovery, there is still people that believe earth is flat.. is human becoming dumber or just plain ignorant..
Sia Both. Have you heard of those anti-vaccine people?
Anti-vaccine people are just ascended flat earthers.
Sia
Dunning-Kruger effect
That's not ironic
And worst thing is that a lot of these believers are from “developed” or modern countries
It's somehow satisfying to see big problems being solved in such a neat and easy way
All dislike are from flat earthers
That's quite probably true, actually.
Globin347 Flat earthers in denial
A stick and a brain! Well said.
Are you a flatearther??
@@BoomB0y why do think he's a flat earther
Finally, an american video that used metric
Thank you
Stefanus Nishikata Simamora it isn't that hard to learn another measuring system. I switch between 3 for length and 4 for weight all the time. It's like learning another language, trust me - it makes life easier and you're head won't explode in the process. Don't be metricentric.
Using the decimal system is handier , that's why they use it with their $$$ too.😂
@@khaccanhle1930 calm down reddit user
He only just pointed out how the metric system is superior than oga-boga bullshit thats used in the us
@@khaccanhle1930 ...
Checkmate flat earthers
Earth-Chan will love this video
ROJ GERMAN yes
Nu uhhhhh. All you Round Earthers are just assuming that the Sun is large enough to cover all of Earth's surface, but it's not.
The sun is clearly a tiny thing the size of my dick (which is microscopic) and on June the 21st sits directly above Syene and your "Tropic of Cancer" but not Alexandria. Hence as Alexandria is a further distance away from the sun on that date, it casts a shadow.
lakersandi some quality bullshit you just told
HAHAHAHHAHAHA LMAO
WOW, Eratosthenes was so intelligent! I studied geometry, trigonometry and all the intermediate maths. But I still never figured that out myself. We spend lot of time on nonsense stuffs like social media and youtube comments, but no time thinking about problem solving. That's why we are dumb compared to the amount of information we have.
Just because you're dumb doesn't mean everyone around you is.
Did you catch that he only used the word curved and never once sphere or round... it's because he knows this only proves its curved. He basically tells on himself by never describing it as a sphere. People forget because of the flat earth debate that there is a million shaped between flat and round. He wants to the illusion that he's proving it's a sphere but he won't call it a sphere because he knows that's a lie
@@hayatefaith4273 soo do you agree his mesurments are correct?
@@skillfuldeep4552 I would have to try myself before saying I agree but they seem legit, why?
@@skillfuldeep4552 the mathematics at the end for finding earth's circumference seem extremely far fetched to me. You would have to know forsure the measurement is equal in another area the same opposite distance from your first stick placement I would think. Unless you've already decided earth's a sphere that math couldn't come into play
Proud to be Greek!
Though I kind of wish they passed their wisdom down to today 😅
Ares start again to your self for future bro :)
Unfortunately the library was destroyed
Kinda wish you guys exported souvlaki 😂
Ares hahaha
ναι αλλα εμεις τη κανουμε?
It amazes and bewilders me that people still believe the Earth is flat.
It really is something; we live in an age of unlimited information at our fingertips and yet, we have what we have. It’s really not a matter of information tho imo, it’s distrust in any authority figure and conspiratorial thinking. I also think they get addicted to the feeling that they somehow know more than the rest of us. They’re part of the small group that has “insider knowledge”. Then they can look down on the rest of us sheep :)
What amazes me even more are all the idiots out there actually giving them attention. Most "flat-eathers" are either drug addicts or people with mental illness (often both).
I love how he hired a bloke to walk it!!
“Excuse me good sir. Can I hire you for a small task?”
An observation that would have been disregarded by most people (stick casting a shadow) but this guy used it to define the world.
But I think what was glossed over was the person who walked 800km whilst counting his steps. That is roughly 1 million steps. I find that amazing, imagine how long it would take to walk 800km, then imagine all the issues. Weather, fatigue, terrain, losing count, keeping your steps uniform regardless of tiredness. Then there is the requirement to walk as straight a path as possible.
Hopefully they didn't have to count each step but instead had some sort of simple trundle wheel to help them out. Or maybe some surveying knowledge that made the task easier.
Imagine believing the earth was a globe because a guy stuck a stick in the ground and measured the shadow. The reason the sun casts a shadow in one location and no shadow in another location is probably something to do with one location being closer and one being farther away. If you stand 10 meters away from a street lamp your shadow will be bigger than if you were standing 5 meters away from the street lamp. This is not because the ground is curved and the street lamp is 93,000,000 miles away from the curved street while the street orbits the lamp while revolving, it's because you are getting closer or further from the source of light so the angles change. Of course if there are no shadows in this town but there are shadows in the town to the north at the same time, that would mean the town to the north is not directly under the sun. You can test this theory by putting a stick in the ground on a flat surface and holding a flashlight above the stick. Directly above the stick casts no shadows, but as you move away from the stick the shadows will grow bigger. Do this in your kitchen and explain to me how this proves your kitchen floor is actually a sphere.
@@collinweeks6322 For your "The torch over the table" to work the sun would have to be so close to the surface of the Earth that we would all be dead. The Sun would also have to be vastly smaller than the Earth so that it could cast different distinct shadows at that close range. With a light source vastly larger than the Earth it needs to be extremely far away to create distinct shadows. If the Sun was very close to the Earth then every location on Earth would be getting light from all directions as the Sun would fill your entire field of view from horizon to horizon.
I would recommend going outside at night. Looking at the sky with a telescope. (most Astronomy clubs welcome guests if you don't own your own telescope) Planets are round, moons are round. But a good one to look at is Saturn, with it's rings that go around the planet. And even cast a shadow on Saturn's clearly spherical surface (more accurately it's upper atmosphere). Watch Jupiter's moons go around Jupiter. See the shadows they cast on the planet and it's spherical surface. Then imagine the likely hood that every planet in the solar system is flat and they all just happen to always be pointed directly at the Earth so that we see them as round and not at any other angle that would make their "flatness" obvious. Or is Earth the only flat planet?
@jaseastroboy9240 I am indeed saying that the earth is the only "planet". I am not saying the other "planets" are flat, nor am I saying that they are facing us in the same position so as to always appear as a circle to us.
You say Saturn is a "planet" because we can visibly see the rings that go around it and cast a shadow on the "planet". Why does that mean it is a "planet". The sun is a star according to science but I am not saying it is flat. Science says that stars are luminary objects of plasma that is held together by gravity. If a star can be a sphere why could Saturn or Jupiter or Neptune or Venus not be considered a star and therefore also be expected to have a spherical shape? Have you ever seen smoke cast a shadow before? It does not take a solid object to cast a shadow so I'm not sure how shadows of Saturn's rings prove it is a solid "planet" rather than just another star except with rings around it?
There is a quote presumably by Aristotle that says, "it is the mark of an intelligent mind to be able to entertain a thought without believing it." That being said just "entertain" the idea that the earth is flat and the only plane of existence for human beings. Life on earth is the only life forms in the "universe" and the sun moon and stars are all much closer than we are lead to believe. We can not put a thermometer to the sun to test exactly how hot it is nor can we measure for ourselves exactly how far away from the earth it is.
When thinking that something such as the shadows of the sun being cast and how it represents the globe earth, ask yourself from the perspective of a flat earth would that same principle apply?
The globe earth and flat earth are two different models of the same geometric shape a 2D circle and a 3D sphere. A lot of the same principals apply if viewed from both perspectives.
Obviously if you trust NASA that the sun is 93,000,000 miles away from earth and vastly larger than our planet then of course you would assume that it would burn us to a crisp if it were so close to the earth. Like I said you can not prove the temperature of the sun or the distance between it and the earth without taking somebody else's word for it so how can you say that it is not smaller or colder than we think?
Another thing I find curious is why so many atheist believe the earth is a globe because science says so, but it was the catholic church that heavily pushed the globe earth narrative on the masses? Other than that guy in Greece that put a stick in the ground and measured the shadow and claimed it proved the earth was a globe. If the earth is flat and the sun is orbiting us rather than us orbiting it then of course the shadow would move as time passes because the source of the light is changing its angle.
I'm just saying question what you are told to believe more than you question your own observations or lack of.
@jaseastroboy9240 on a flat earth the sun would not shine horizon to horizon the same way you cannot light an entire warehouse with one candle. The light emits from the candle only so far in all directions creating a "sphere of light" in a dark emptiness.
@@collinweeks6322 Of course the Sun can light the entire face of the Earth that is facing it. The Sun is over 100 times the size of the Earth.
Imagine in your torch over the table analogy that the diameter of the torch was over 100 times the diameter of the table. Then move the torch far enough away from the table so that it appeared small. All the light from that massive distant torch would arrive at the table vertically and light it's entire surface. Now try and account for different shadow lengths at different positions on the flat table. There wouldn't be any difference, all sticks would cast no shadow as the light was coming at each of them from directly overhead. But what if you observed that the shadows were different lengths? A flat table makes no sense in that analogy. But substitute a sphere and have all the sticks stuck in the sphere with one end pointing to the centre of the sphere (what people call down). Then all the sticks having different length shadows make total sense. And the stick in the centre of the illuminated area would cast no shadow. Just as happened with the sticks at the two cities in the video.
This video was a fantastic example of applying basic principles and observations to derive accurate figures for Earths diameter as well as the Earth to Sun distance.
Who would win
Some ancient bois
or
Some dumb flat earthers
meme boi the former
meme boi
No you said it wrong, you completely missed your opportunity.
"Who would win, a heap of dumb flat earthers, or 1 ancient boi."
Ancient smart bois
You couldn't even execute the joke properly, no wonder you're a disgrace to your name, meme boi.
The real story here is how he could just simply hire someone to pace the distance between the two cities, and that person actually did his job reliably
You'd imagine that as soon as he was out of sight, that man would have just gone "ah fukkit, I'm not walking all the way to that other city, I'm just going to go grab some beer and report some arbitrary number"
maybe he was his good friend or he had a good reputation
@@fruit5003he was the chief librarian, he probably hired some of his apprentice or something lol
Feel bad for the pacer who had to measure that.
They were actually highly-paid professionals called bematists! And they usually worked in groups, as they were in this case.
a few thousands of years technological advancements yet we still have people who believe that the earth is flat
Thousands years later, you can still find people that believes our earth is flat 🥴🤣
And there is an epidemic of people who know nothing about the proper use of English grammar and as a result can barely communicate at all.
atleast he knows the earth is round unlike you@@annaspeaksout2964
how will the flat earthers get out of this one
Colin they believe the sun is close, which would cause the same effect as the rays hit the earth at different angles
Moorb0y52 which would also not make sense because in some places the Sun would never get high in the sky and in some places the day would be darker than the day in the equator because the Sun is farther
The Greeks were paid NASA shills. DUH!
@@collintag73 greeks existed before nasa
Official Frostbite, He’s being sarcastic
The 3 dislikes are the people who still believe the world is flat 😂
J Law its a micky mouse
6 as of 4:23 PST, day of upload 😂
7 ignoramuses now.
now 27... :v
agree
It's actually sad people 2,200 years ago are smarter than today's society
The power of science. The ancient Greeks knew what was up.
Explain this Flat-earthers
Shashank Gutta Well, my Parents we’re lucky to fly on a Plane that flies higher than any other Commercial Jet. Out of the Window they saw the Curviture of the Earth
Shashank Gutta But, if the Earth was Flat, why isn’t there an edge to fall off?
Shashank Gutta Well you said, you like their Theories. I responded to that:)
Shashank Gutta Well your comment doesn’t make any sense...you are counter talking yourself
The Earth is flat, unlike the stomach of a typical CZcamsr.
Imagine being a flatearther in modern era while there is this genius living 2000 years ago before you who finds out thst earth is round with just a stick
Recipe for a flat earther:
Start with a GED or less education
Add a penchant for conspiracies
Toss in belief in Christianity
Throw in a lot of spare time
And access to CZcams
Mix well
And you got yourself a flat earther
SteverRob 😂😂😂
SteverRob why Christianity? Im christian and im sure the earth is a sphere
The reason he mentioned Christianity is the creationists who interpret the Bible literally and therefore believes that the earth is flat and only 5000 years old.
there is no thing written in the bible confirming that the earth is flat
Not all Christians are like that
flat earthers shooketh
Who would win?
- a bunch of free thinking scientists
- some Greek bois
itaybron "free of thinking"
Flat earthers aren't scientists
"scientists"
Ancient Greeks discovering the internet: Wow...this is so fascinating...we come so far as a race.
Ancient Greeks discovering flat-earth videos: Maybe we haven't.
Top 10 Most Intelligent Man on Earth
Chuck Norris hi
*_...ignores his 185% discrepancy in stadion measure-where Aristotle said the mathematicians of his era measured the circumference as 400,000 stadia..._*
Flat earthers triggered
Earth wasn't flat back then, but it is now, apparently.
Climate change warped the surface 😄
One of the coolest things I have ever learned! Thank you
Jack Dalton no experiment, just actual photograph and live video of the earth. That’s what we call positive proof. The earth isn’t flat. The video and several other scientists have proven it with mathematical precision. It’s not a game. If it were you’d lose. :)
The Earth has no circumference, the Earth is a dinosaur, cOmMon sEnSE guyS DiDd yUO lEaRn tHIs iN eNGlIsH cLas'S
Absolutely amazing.
I’m a globe earther but believe me flat earthers find an explanation for everything however without evidence , I’m experienced in debating with them
So, how did Eratosthenes prove that the sun's rays were hitting the earth parallel or to each other?
Assumes a distant sun with parallel rays, we don’t observe parallel rays. 😂
Yeah, but they’re still parallel. You see the greeks were actually smart and didn’t rely on mere observation to make the ACTUAL assumptions. Your eyes lie to you ALL the time. You do realise everything you see is actually coming in upside down and your brain has to flip it up, right?
What an amazing mind he had.
Smart guys
Damn and 2000 years ago...with a shadow ,stick, degree and distance on summer solstice
Flat Earthers: I read extensively and I believe the Earth is not spherical
Eratosthenes: I have a stick and a brain
30 flat earthers spotted.
WOW!!!!!!!
All it took was a stick
Thanks for this.
I've never met a flat earther irl nor online, 🤷♂️
You've been going to the right places then
Clever
how did they keep accurate time?
How did they know they where measuring at the exact same moment in time?
because the shadows were shortest at solar noon, and Syene was south of Alexandria.
@@jimbobeire makes sense , thank you! ^^
Someone please send this to Kyrie Irving.
Wow
If anyone is curious. if flat earthers were right. using those angles and distances would mean the sun is only 101km in the sky (coincidentally the height of northern lights are at). for reference the moon is 384,400km away.
Amazing. 99.99% of earths population probably couldn’t figure this out by themselves even today.
People of India proved that 3500 years ago, Greeks did 2200 years ago still my neighbour believes that Earth is flat.
Are you Indian?
Nop
Really?
yup but I know Hindi, i learnt learn Hindi in Sinhala (a little bit) while I lived in Sri Lanka during 2002-2008
Slap him/her
Me: sees dislikes
Me again: yah thats right flat earthers, YOURE WRONG
A stick, his brain, and some poor sod who had to pace out 800km on foot...
Thanks
But that time it was belived that earth is flat i guess!!
Honestly, I still think the Earth is flat😑
I'm kidding, flat earthers annoy me....
Now all these flat earthers have just a stick
And all they do is shew Sphere Earthers away.
yoo, that dude needs more recognition
Here's the question, if you put a long (very VERY long) stick horizontally, will the stick curves? Or will it stays at 180°? Or will it break?
M'aiq the Liar use gravity, dude. 9,8 m/s or 10 m/s. Thanks to appleman. If you are sphere earths, i think it will break because of gravity. If you FEs, you can make your answer then.
M'aiq the Liar M'aiq if i shout will you get impressed?Probably not,right?
In the experiment, already an assumption that the sun was very far away, was made. And that is vital not to get wrong, because if the sun is much closer and much smaller then the experiment is null. the sun will not be casting parallel rays, which is what you observe on a partly cloudy day, angled rays, indicating that the sun is much closer. Further, sun spots are observable also indicating that the sun is localized over a specific area making it much smaller and much closer than we have been told.
DarjeelingNeverSpillsHerTea, So you agree with me. The experiment is pseudo-scientific.
you are absolutely correct sir these rays would be impossible on the globe model
How an ancient greek didnt take the elevation of both points into consideration and therefore assumed, that the earth is curved, when in reality its flat.
Please tell me this is a joke
Checkmate, flat earthers
I'm not a flat earther but that principle would work on a flat earth too. If you put a pen vertically on a table right below a light bulb it won't make any shadow. And if you put another pen a couple of meters away on the same table it will produce a shadow. Does that mean the table is curved? Or am I missing something?
That's a totally different scenario because, by moving the pen away from point A to B, it's like your saying that Eratosthenes' experiment was done at around 10am on Syene and 2pm on Alexandria.
i think he didn't prove the earth was round, but that he already knew it and just measured it. Aristotle already proved it by looking at the earth's shadow on the moon, it's always round and only a sphere always produces a round shadow
seknight I have always been convinced. All celestial objects are spherical, so why would earth be a disk. Flat earthers believe that not only are celestial objects flat but also they all face the earth in a way to look round and flat like disks. Ridiculous.
Cash Bonanza well the sun in the flat Earth model doesn't make sense. In some parts of the Earth, the Sun would never go high in the sky and some places would be darker during the day because they're farther from the Sun
Cash Bonanza it's different, because if it's just like your theory the phenomenon will happen everyday but it's not, because of the earth revolution and the curvature of the earth
And current greeks is calculating to pay theirs debt
Pythagoras. Early Greek philosophers alluded to a spherical Earth, though with some ambiguity. Pythagoras (6th century BC) was among those said to have originated the idea, but this might reflect the ancient Greek practice of ascribing every discovery to one or another of their ancient wise men.
Fun facts: the meter was originally defined as 1/10000000 of the distance measured on the circumference of the Earth from the North Pole to the Equator.
First like
Who f**king care
I really do
Nah m8 NASA paid him to say that
i don't know if this is a joke, it's hard to tell over the internet, but just in case it is serious i am here to say... THERE WAS NO FRACKING NASA BACK THEN YE FLATTARD PRUNEHEAD. if you *were* joking, feel free to put me on r/Woosh.
they might have been joking, idk.
moon batchelder
The person below you is more qualified for the r/woosh
i figured it was a joke, you can never be sure though.
moon batchelder
Yeah
Who would win, millions of hours of flat earth “research” or a man with a stick
It wasn't a man with a stick. He was in Alexandria. There was a huge Obelisk, tall enough to cast long shadows, so precise measurements can be made of the angle to the sun.
The Obelisk still stands, but it's now in Rome... if you're ever there, go have a look.
Now that was awesome
Jack Dalton lol
But According to quran, earth is flat. This proves that Allah is hypothetical. If Allah is almighty then why he doesn't know about it. Mohammad is very cunning man, he waste his half life in doing some cheap things and suddenly he came up with quran. What a great Man 😂😂🤣
Rohit Chauhan, it's pretty clear you know nothing about Islam and Quran and you're acting like you're the expert.
Arum Cont According to Quran Earth is flat. That's it
Arum Cont nvm dude hes hindu, those ppl and their phoney baloney Gods always bore a grudge against muslims
btw no, theres no unambiguous statement in Quran on how Earth is flat, all of the verses that some ppl mistakenly thought were the proofs of a flat earth was simply God telling you that He made the Earth as a plain for mankind to reap its benefits and also theres multiple verses that blatantly said that the Earth is round, such as An-Nazi'at (79:30) that contains the word *dahaha* (round/egg-shaped)
intel core i420 boooom!
*Xx_FlatEarther_xX has left the the game*
I have questions. How could the exact time to perform this experiment be measured in Alexandria and Aswan? Measuring high-noon in once place 800km away from another without instant communications? How was it agreed upon which instant noon was if the shadows were different, then both places would have conflicting information on what constitutes noon. I don't deny the calculation was made, nor am I a flat-earther - I just can't figure out HOW they managed to synchronize the time 800km apart 2,000 years ago.
90% of the comment section = ripping on flat earthers
That's amazing
Earth-Chan will love this video
How did he figured out what time “noon time” would be in the summer solstice in both cities ?
The same way you know it's noon in your city and noon in another city duh
2100 : the earth is patrick shaped because i'm so smart
Hey Scotty, Science man.
Easy Peary and quite brilliant!
Eratosthenes joined the chat
The exact "simple" calculation of Eratosthenes
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
Also the stick called gnomon not stick is a ancient measure instrument
Flat earthers left chat
17 flat earthers
"Just a stick and his brain"
And also the millennia of prior mathematic advancements that lead him to possess the knowledge and skills to even be aware the problem was solvable.
I m one of your fans
Can i take your video as purpose of education to share my language?
How did he known when to make the measurement?
I mean how did he know it was noon at Syene?
Good question
The city of Alexandria had an Obelisk 25 metres tall...
This channel... "yeah, so this dude, he used a _stick_ " .
🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥 superb logic😤🔥
The fact that some people were/are so intelligent baffles me.
Great Indian Astronomer and mathematician Aryabhatta discovered much more then this before..
Aryabhatta lived 700 years after Eratosthenes.
This video makes out he got it right, infact he was out by approx 17%, still an amazing achievement for the time.