Why doesn’t the Leaning Tower of Pisa fall over? - Alex Gendler
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- Опубліковано 2 гру 2019
- Dig into the 800 year history and architecture of the Leaning Tower of Pisa and find out what gives the tower its infamous tilt.
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In 1990, the Italian government enlisted top engineers to stabilize Pisa’s famous Leaning Tower. There’d been many attempts during its 800 year history, but computer models revealed the urgency of their situation. The tower would topple if it reached an angle of 5.44 degrees- and it was currently leaning at 5.5. What gives the tower its infamous tilt? Alex Gendler explores the monument's history.
Lesson by Alex Gendler, directed by Aim Creative Studios.
Animator's website: aimcreativestudios.com/
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Italian government : Stabilise the leaning Tower of Pisa or it'll fall at 5.44°
Pisa at 5.5° : Hold my tower
Hold my lean
If it can
*Clap*
Can I hold it
Rupa Choun “that’s what she said” - every middle schooler ever
"Don't pointless things have a place, too, in this far-from perfect world?"
I really felt that
Me too.
Yep that’s why I’m here
That hit home hard
Nothing has a place. Nothing is permanent.
Simple as.
"Having a place" is a really self entitled way of thinking.
You make your own place, but you do not own it.
@@adamsrealm So i dont own minecraft right?
It isn't falling because there's too many people posing holding it up
Merfolk ikr
omg lmaooo
Lmao
They are lending their strength
@chocolate dip 100 million germs are too small, you mean about 100 decillion germs?
It's also worth mentioning that the Tower of Pisa had survived four strong earthquakes during its time, thanks to the very same soil foundations that caused the tilt.
So no one is going to talk how it did not fall for nearly 6 centuries with poor fixes while they give it 300 more years with proper fixes???
@@kozodoev no that couldn't be more off. They didn't fix it that's the point they even made it worse over and over again and the tower didn't fall. and now they properly fixed it and they gave it 300 years? 😂
@@kozodoev I'm afraid that you are the one who is not getting it. Please re read our conversation. The argument of the grandmother is out of this context because in that case from infant she would have back problems, and all the solutions from the doctors worsen her condition. The same with the tower. All these years they made the problem worse and worse and the tower didn't fall. At the 90's where they actually fixed it, they gave it only 300 years. How does that even sound logical to you? It's like the tower hasn't stood up by itself for over 600 years. And the only good fix gives only 300? That's my whole point.
@@kozodoev 😂Aww It's ok pal you just didn't understand simple explanations. I don't feel sad about your response. Have a great one.
@@mar__k are you for real??
how on earth is this the first time that i considered that it wasn't supposed to be leaning jsjdhdhd
Me too. I think somewhere in my time growing up, I heard stories like the tower was intentionally built a bit leaning to test some physics theories involving gravity.
That's exactly what I felt after watching the video.
Darian I think there's a myth that someone (like Isaac Newton or something) dropped things off it to test his theory that all things fall at the same rate, regardless of weight. (There are many problems with that myth.)
@@NoriMori1992 the legend is about Galileo who first theorized that two different weights would fall at the same speed in the void, disproving the Aristotelian theory that every object falls according to its weight.
It is, of course, a legend but it has been reenacted by the university of Pisa (video in Italian) ua-cam.com/video/sQGvSUWRoqw/v-deo.html
😮
everyone: "stop!! touching!!! the tower!!!! or else it'll fall!!!"
engineers: "okay but we have a new idea.."
Elena Nicollin engineers: “I mean I could but why would I want to?”
300 years later:
*Ah sh**, here we go again"
CarbOnl y Yup
make it lean the other way to spice things up in 300 years :P
500th like
@@J040PL7 lol
Tony: let's fix it just enough so they will keep coming back.
Living in Pisa and seeing in pretty often, I just don’t realize how this tower is so important to the rest of the world, until a random vid about it pops up on my home page and my heart warms up again
When did they take the cables and weights off? Or have they?
da pisana, confermo!
lol so funny hahaha this video was recommended to me as well I never found it that amusing, but I guess people are just curious how it's still standing being tilted.
@@OldNew45 answering to this a year later, haven’t been there in months but I’m pretty sure the cables are in place permanently to keep it standing
"if anyone knows how to turn a disaster into a tourist attraction, it's Italians" - Trevor Noah
So did the Germans. In fact they've made two major disasters a tourist attraction for lots of countries.
@@thepencilcunts Which were those again?
@@abthedragon4921 Something about wars or something? Idduno I passed out around the 1900s.
The Pencil Cunts Are you talking about concentration camps?
@@NoriMori1992 🙊
*Michael Jackson:* _I'm the only one who can lean in 45 degrees._
*Leaning Tower Of Pisa:* ｐｉｚｚａ ｔｉｍｅ
Eh?
You mean Muzan Kibutsuji?
@@KyoushaPumpItUp that hit right into my heart....
"you get your -rent- pizza when you fix this damn -door- tower.", Pizza Parker
Pizza time pizza not a cult.
As an engineer, in constructions that people's lives will be in danger when something goes wrong,
we always calculate the "limits" until the accident occurs with a safety factor.
Meaning that when the calculations say it is 5.44, they include the safety factor.
The real number for the accident to occur may be 6 but we will never go that far since we always calculate with this.
Unless they were asked specifically to determine when the tower will actually fall. In my PhD dynamics course, we add a factor of safety when designing something commercially, but we don't have any factor of safety if we're trying to see the actual limits of something. Sometimes knowing the breaking or fracturing point, rather than just the commercial limit, is important.
I also work with superconductors and when we talk about the temperature the material will fail at, we normally talk about the maximum temperature, and other factors can make it fail before the temperature we measure.
So no, engineers don't always add a factor of safety. It depends on what you're trying to answer.
@@nanochic As I explained,
“In constructions that people’s lives will be in danger”. That’s when the safety factor is lower than the actual breaking point. If a material will break at 6 per say, we will calculate the construction with a much lower number for safety purposes.
@@nanochic i agreed with u
@@nanochic Yeah you have a valid point, they were asked when it will fall and it's not about construction. Good job.
Summary:
"Let's build a tower!"
"Oh, no! We know nothing about the soil!, it is tilted!"
"Oh no! We want to finish it, but there's a war!"
"Oh no! Now that we add more height, it's tilted even more!"
"Oh no! We try fixing it, but it gets tilted even more!"
"Oh no! We try fixing it again, but it gets tilted even more!"
"Oh yes! Finally, we now have a solution to straighten it!"
"Oh no! The tilting has become so iconic, we can't let it straight completely!"
#facepalm
Ngmong apa si cok 😁
I strongly agree
@@aantole3470 Penting banget dah komen gitu -_-
@@aantole3470 Belajar bahasa inggris dulu ya dek
@@aantole3470 Rangkuman:
"Ayo bangun tower"
"oh, tidak! kita tidak tahu apa-apa tentang tanah bangunnya, pisanya jadi miring, kan!"
"Oh, tidak! kami mau menyelesaikannya tapi lagi ada perang!"
"Oh, tidak! sekarang setelah kita menambahkan lebih banyak beban (jadi dibangun ceritanya), pisanya semakin miring!
"oh, tidak! kami telah mencoba memperbaiki pisanya, tapi malah makin miring!"
"oh, tidak! kami telah mencoba lagi untuk memperbaikinya, tapi malah makin miring!"
"oh, mantap jiwa! Akhirnya, kita sekarang memiliki solusi untuk meluruskan bangunan pisanya!"
"oalah! justru kemiringannya si bangunan ini malah jadi ikonik, kita ga boleh ngelurusinnya sampai vertikal sempurna!"
#belajarbahasainggrisdonggoblok
TedEd: answering questions I didn’t know I had.
LOL
wow You get a heart from ted ed
engineers back at that time: oh what a lovely tower we have! lets try to stabilize it and in turn tilt it more..
they didn't know π=e=3
@@Hypekickerz I hate that approximation with a passion
jammydodgers297 good luck building something with irrational numbers
@@Hypekickerz depending on the precision needed you can approximate pi to 3.14 and e to 2.72
@@Hypekickerz but then I'm not an engineer, I study maths and physics.
The beauty of imperfection and mistakes is why i love doodling; i make several "mistakes" and end up incorporating it into the work and it makes it look so much better
like asimetric characters. Asimetry makes them unique.
*Engineer:* Guess what we can fix the leaning tower if pisa."
*Tourism board:* "Not too much."
Exactly.
3:48 Ah yes, they just clicked "rotate" in MS Paint and the problem was solved.
Except in MS Paint you can only rotate by multiples of 90 degrees xD
That was the engineering accomplishment they were missing.
Pls tell me what is your cursed profile pic
@@1david1r47 Ok so this is the girl in the bass boosted version of the music video of Ed Sheeran's Shape of You
A.Y ok thanks
"Don't pointless things have a place, too, in this far-from-perfect world?"
Me: *Don't do that. Don't give me hope.*
@Cooper I mean, it's just a meme :P
Sounds like someone needs counseling
Don't worry, some of us get your self-deprecating humor 👍
@Cooper self-deprecation is certainly not unique to this younger generation
Don't worry sweetie❤ u too have a place here in earth🍁
I was there once. Being on the tower you actually feel how much of a difference those couple degrees make.
The weirdest thing for me, was how the steps inside go flat and then steep as you go around the inside of it.
Me : I have finals tomorrow lemme study
UA-cam : *Wanna know why the leaning tower of Pisa is leaning?
There's always something to learn.
true
Where's Chipping
There's always something to lean.
FTFY
@@philipauken5391 wow!! There is always something to lean .
I want to like this comment but I don’t want to ruin the look of 150 likes
TED-Ed: Tower of Pisa
Me: Trying to straighten out my life for a decade now
Ur from teaching mens fashion
You're everywhere!😂
Ye
Why did ted ed like your comment?😂😂
Maybe you just need steel cables and 600 tons of lead.
"As a monument to the beauty of imperfections." Great quote as always..
"And when the storm is over,you
Won't remember how you made it
Through how you managed to
Survive, you won't even be sure
Whether the storm is really over."
"But one thing is certain,when
You come out of the storm, you
Won't be the same person who
Walked in.That's what this
Storm's all about."
Another great quote by Haruki Murakami.His works are very deep and intriguing.
JUST LOVE IT!
2019: Why doesn’t the Leaning Tower of Pisa fall over?
2319: Why does the Leaning Tower of Pisa fall over?
2019: Why doesn’t the Leaning Tower of Pisa fall over?
2039: Why did the Leaning Tower fall over?
After 309 years you will get more likes!
Don't you think they will again fix it then
@@pargatsingh5261 ?
Ahh that's quite a prediction.
“Uh, boss. The tower’s sinking.”
“Nah, don’t worry ‘bout it. Back to work!”
This channel tells us that animation and story telling can make any topic enjoyable
The music is really adding the Italian mood. Good job Alex Gendler!
I always thought tower of pisa was made with 'imperfection' intention, never knew because the soil it got leaning
You have alot of growing up left to do kid
@@evilpimp2475 hm.. how old are you to call me kid?
Me too. I don’t blame you, this isn’t like essential knowledge like who was president during 9/11.
I've had that same thought too!
Wait, I read in my history book that the guy who inspected it had one leg shorter than the other and so he though it was straight when it was not, My life was a lie..........
Kinda funny how they basically fumbled their way to one of the coolest and weirdest structures that we've ever made, goes to show you that mistakes aren't always a bad thing and I hope it's a lesson that kids will learn from this video.
The interesting thing is, if this didn't happen, modern science probably wouldn't have known the importance of soil in construction. It has handed us a vital lesson
Can we just appreciate the animation for a moment, thank you.
1:19 Moment of appreciation for the slice of fossilized pizza
Good eye
Mamma mia
Prehistoric Pizzalopod
I named one of my cactus after the tower. I’ve always wondered what the story was behind it! Love the vid
Henry Rincavage Is the cactus stable??
you name your plants? do they react when you call them (like dogs) or do they ignore you (like cats)?
Plants tilt to face the sun. To keep your cactuses straight rotate them 90° every time you water them
AJEET SINGH He has some supporting cactus orbs on the left that keep him up!
mikelor84 they very much ignore me unfortunately. But I’m more of a cat person anyway!
I love TED-ed videos! I've learnt a lot! Thank you!!! They not only help widen my English vocabs but also provide a lot of knowledge!
The editing/animations on this video are amazing!
3:56 This Tower of Pizza in a video about the Tower of Pisa gives me life!
The quote in the starting was the best thing for me today😊
The art is amazing in this video. Keep it up ted ed artists :)
This has been a question I’ve wanted to get answered for so long. THANKYOU!!!!
Disasters, wars and human interventions and the leaning tower still remained after more than 800 years. It is only right that the people of Pisa should maintain such historical landmark
The way they kept trying to fix the problem but kept making it worse accurately describes my life
Beauty in imperfection! Wow that's a great line to ponder on! Thanks Ted for the awesome videos always.
i love how well this is animated
3:56, The irony is that the engineers trying to fix the tower of pisa while eating the Pizza
@Cooper r/woooosh it is a joke
@Cooper leaning tower of pizza
Don't use words if you don't know what they mean. Do you even know what irony means?
@@hittingyouoverthehead yeah exactly
@@hittingyouoverthehead THANK YOU!
Fun fact: Most church towers in Venice are leaning, some more than Leaning Tower of Pisa.
@Death is our worst Enemy Thank you.
I live in Pisa. I believe that something like 13 structures in Pisa are leaning. Pisa's soil is that bad.
@@MattiaBiggMattGentile First of all, you live in a beautiful city!
Second, at least you have soil! Here in Venice most things are built on wood logs piled into the ground!! :)
Third, I'm originally from Canada and my name is Mattia but I'm a girl. I've never met girl Mattia in Italy, and I only met one girl Mattia in Croatia where I currently live! (I'm in Venice temporarily until end of March)
@@thormaster06 And you got to Venice during the high sea, that's unfortunate!
I've met only one girl Mattia in Italy, when I was little, and after my identity crysis (DO I HAVE A GIRLS NAME OMG?) I was assured it was a male name. But there's plenty of Andrea girls (another Italian male name) in English speaking countries so you don't need to panic :D
Is it true that places like some hotels in Venice have their floors flooding with water?
I just watched Far From Home movie and was curious about it :)
I remember back in 1948 my family fished Lake Winnipeg, in an old wooden boat we had to paddle it with home made paddles.And if we got thirsty we would just scoop up water with an old tin and drink.On stormy days we had to paddle to the nearest shore and build a temp shelter one night we had to go to shore, it was raining we drank rain water and ate raw fish that we caught.
It’s strange to think that if the ground wasn’t marshy, then we would just have the Tower Of Pisa
The music, animations, and perfect narration makes this video and this channel simply amazing.
"Don't pointless things have a place, too, in this far-from-perfect world?"
What a perfect quote 👷👷
*Leaning tower of Pisa* : can lean 5.5°
*Micheal Jackson* : Hold my beer!
What a masterful speech... I feel inspired! Thank you
4:17 lmao the leaf fell off and his ween got exposed
haha i noticed that too
*_B a n n e d_*
I bet he's single.
It's teeny weeny
No d at all
Cuz it's flex taped to the ground, duh.
Mujahid Syed good 1 brah
Noice
Very nicely illustrated!
2:03 Nobody:
The builder of the tiny structure: *casually smiling as his structure topples*
"A monument to the beauty of imperfection."
Love that!
I read somewhere that by the time they renewed it's construction in the 1200s, the fact it was tilted was already well known and they proceeded anyways *because*, in part, of this fame, and when they built the last few floors compensating for the tilt, the goal was already to attract visitors to the city with it's leaning tower. The lean was use as, essentially, a deliberate touristic attraction, almost since it's construction.
I was supposed to write a paragraph about the Leaning Tower of Pisa a while back, wish I had found this video then!
The Tower has now been stabilised and stopped its leaning, with a progression of straightening of about 3% to ease pressure on the stonework and masonry. It is predicted that this will last 200 years.
Fascinating. Never even occurred to me why it was leaning or why it wasn't falling. Makes you wonder how many buildings suffer from a similar affliction... I understand the height of London's skyline is affected because much of the city is built on clay like Pisa.
Many towers and bell towers in Italy are affected by the same problem. Two famous examples are the Two Towers in Bologna, both leaning quite dramatically in different directions, just a few meters apart from each other. Tho in their case they are built on a strata of very fragile rock similar to chalk, if I remember correctly.
I guess that in a country where there's a church every few steps the probabilities of building a bell tower on unstable soil are very high. The fact that in the Middle Ages many noble families displayed their wealth by building the tallest fortified towers in their cities didn't help either...
The thing that made me watch the whole video was that quote of Murakami.....
As a matter of fact, I am indeed interested in architecture and engineering (I might have pursued those fields if I'd been better at math), and I have opened both the suggested videos in separate tabs to watch later. Thank you very much!
If I watch outside my window I can see the tower :) Still standing, still leaning
It was comforting for me during the pandemic to see the tower, so many nice memories in Piazza dei Miracoli.
Hello from Pisa, nice video!
When did they take the cables and counterweights off?
@@OldNew45 years ago there was some working going on at the base, I think 10 years at this point, but I don't remember very well, I was too young 😅
@@alessiadimanno1707 I was there in 1999, and it was fenced off at the base. No one could go into the tower, and there were cables and counterweight "keeping it from falling"
@@OldNew45 as I told you, there was some working going on at the base. It was a massive intervention for stabilization of the base, however the cables didn't "keep it from falling", just offer a extra stabilization to allow the work they did at the base ( that one for sure, keeps the tower from falling tho).
Now the tower is accessible, and it's like this from at least 10 years.
I love how this bell tower was important enough to them that a century hiatus didn't stop them from finishing it. Is there anything like that these days?
The Washington monument.
Great, more interestingly I like the background music.
Same! Does anyone know the name of the piece bc I'd like to listen to just that
I enjoyed the subtle visuals in this one
I'm in love with this animation... wish I was this creative!
The music in this video was so fun
1:10 1173 looks like BELL backwards
Wow
i looooove the music in the background! it's so mysterious and beautiful
Thank you! soundcloud.com/aim-music/tower-of-pisa-ted-ed
4:17
Smol
smol
@@nonamechannl smoller
Smol
Amazing animation from ted as always!
I love how each attempt to stabilize only made the problem worse
Lol the people trying to fix it and making it worse … I felt that 😅
Great video, taught me alot about this monumental tower👍🏽tower of pisa
Architecture and history in a fun video, love it❤️
it's more specifically called geotechnical engineering 😉
Love the animation! It is so pleasing to the eye :)
So no one is going to talk how it did not fall for nearly 6 centuries with poor fixes while they give it 300 more years with proper fixes???
Wow!This was so good! KEEP UP THE GOOD CONTENT!!!!!! LEARNED ALOT
I thought it was the leaning tower of pizza....
Now I'd pay to see.that
Yum.
...
Dear TED-Ed, I'm really glad i subscribed to your channel 😇 Thank you, I've learnt so many things from this channel 👌🏽
We're glad to have you!
the Tower of Pisa is one of the most interesting structural fenomena. Thank you for this video
I’m actually so glad I’ve got to see this
I feel so bad for those people who tried so hard to correct the tower into a straight angle
3:55
The tower of pizza
You guys need to make podcasts of storytelling. I love listening to it while sleep.
The best thing about the ted ed videos are the quotes in the starting.
Damn, engineers are using Jenga to solve real-word problems. I learnt something new today
Am I the only one who found animation in this video too astonishing.
This video has been in my recommendations so much i just decided to watch it
Animator deserves a raise for those transitions
The Tower just needs somebody to *lean on* 😆
Nobody tell the tower that .5 > .44 or it's all falling apart
No images of the tower or did I miss something. Now I have to google this because I am hooked. “Thanks ted”
Beautiful animation,and i understanded with your good speech.
I love how every attempt to fix the tilt only made it worse
Leaning tower of Piza marketing team come up with: A monument to the beauty of imperfection
Phew we’re saved
as an italian, i can confirm that we eat pizza even when we're researching how to save our monuments
Really neat video, now I have an anecdote for the future 👍