Turbulence: One of the great unsolved mysteries of physics - Tomás Chor
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- Опубликовано: 21 авг 2024
- What is turbulence and why does it happen? Explore the phenomenon that has perplexed physicists for over a century.
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You’re on an airplane when you feel a sudden jolt. Outside your window nothing seems to be happening, yet the plane continues to rattle you and your fellow passengers as it passes through turbulent air in the atmosphere. What exactly is turbulence, and why does it happen? Tomás Chor dives into one of the prevailing mysteries of physics: the complex phenomenon of turbulence.
Lesson by Tomás Chor, directed by Biljana Labovic.
Animated by Hippolyte Cupillard, www.studiotabas...
1:46 - Original footage by Think Twice: • Double pendulum | Chao...
2:17 - Original footage by 3Blue1Brown: • Why 5/3 is a fundament...
4:14 - Original footage by VERIFI: • High-Fidelity Turbulen...
4:23 - Original footage by UWSSEC: • Tornado Simulation of ...
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Three word phrases better than "I love you": Engineering edition
1. Incompressible laminar flow
2. Assume Ideal Gas
3. Completely reversible process
MechE for life!
4. Assume steady state
@@RaphaelCh 5. TURBULENCE INCOMING
You forgot 2d flow and fully developed!!!!
When I read "... neglactable" I'm happy
Turbulence:
Everyone: OMG WE’RE GONNA DIE
Baby: Yay~*
bruh moment
@@Nugcon forehead bruh moment
No turbulence is strong enough to break the airplane.
@@mohammadzohorul8887 MAYBE VOLCANO CAN STOP AIRPLANES
I wish they were like that on every plane ride
As a pilot I can confirm the turbulence button is right next to the chemtrail button.
what's chemtrail?
@@shudha5214 it is a Conspiracy theory
Keys879 idk but on airbus i fly its kinda far away from that :^
@@mcwatcher7790 why won’t it let me read more
Good troll. However, there’s no such thing as a chem trail. It’s a contrail or condensation trail. So basically, some nuts act like clouds are bad
Me: poops in the plane bathroom
The pilot: we are currently experiencing turbulence
Turbulence is a plane accident that caused from large heap of wind
@jingyu byun Actually most airplane passanger cannot go to the toilet while having a turbulence....They also wearing selt belt until it safe to move around.... Sorry for my bad english:)
@@zarifaiman5005 What if he's already in the toilet when turbulence begins?
Haha
@@weijianlim4431 i dont know if you get the joke or not
bUt wHaT aBoUt TuRbUlEnT rElAtIoNsHiPs
Underated coment
Hi Daniel.
WTH ARE YOU DOIN HERE PAL
Hi!
even more mysterious..can occur with any one at anytime anywhere..lmao!1
ye, help me with that. so I could answer my communication assignment
1:20
this guy brought lighter to the plane!?!?!?
absolute madlad. bet the security only took away his water bottle.
Lighters are allowed on the plane, better yet if you want to bring one you have to take it with you, you arent allowed to have one in your luggage
3:13 Animation error.
Ice cubes also float on water.
That's a glass cube then.
Present Lee wut
Just entered the comments searching for this hahahaha
Your avatar kill me :D
Maybe the ice cube was dropped from a height that generated a force greater than its bouyant force and just before it started to float the animation stopped 😂
"Despite how difficult it is to explain turbulence mathematically, Vincent van Gogh was able to capture it with astounding accuracy in his iconic painting "The Starry Night" - so smooth ~~~
The animation at 1:50 is from the Chanel “Think Twice “. Really recommend if you like maths or aesthetically pleasing thing
its literally written on it
@@npc4416 this comment was before they updated it
@@owlesent oh thanks
I’m actually studying dynamics of fluids and I’m very invested into it..
seeing this little introduction to it makes me acknowledge how much this topic is important even more!
Thanks ted-ed !
I'm learning about turbulence in geology- both in magmatism and fluvial morphology. I'm really interested in developments being made in modeling sub-laminar flow! Finding more patterns in sub-laminar flow seems to be the key to understanding more about turbulence.
even if there is no explanation ,ted ed will give you so many probabilities with best available science .
you are right i agree with you
@@mennatallah4068 Arabic
Did u realize they make the animation wrong, becuz ice cube will always float on top of water
Factz💯
@@rancor4513 correct 👌🙂
A whole buncha turbulence
I've submitted a request to make this video a few weeks ago and here it is. Not sure how much my request influenced the actual making of this video, but thank you very much for making it happen.
I have studied about this in my physics classes but your animations made it more interesting!! Always the best TED-ed ❤ keep it up.
This TED-Ed animation is fantastic! The TED-Ed Team easily explains complex physics concepts.
Great job! Congratulations.
Ayyy, that double pendulum footage is from a channel called Think Twice! :) You should have given him some acknowledgment so people can check out the rest of his awesome content!
Not only that but it would have been nice if he had broken down the difference between chaotic and random a bit more. I'm going to the Think Twice page to now to hear that explanation. Otherwise pretty informative video
1:50 Og clip is by Think Twice so please credit them
1:46 did you really steal this from Think Twice and gave no credit?
I don't think they will allow a lighter and an incense stick on the plane for you to experiment 😂😂
That isn't a plane experiment. It can be performed anywhere, with similar results.
Co-pilot fallen asleep....
Captain rushes in from the lavatory: Johnny! what happened?!?
Co-pilot: Errr we got sudden turbulence captain.
Shout out to the TED-Ed animation team... this was visually beautiful!
Kinda gave me an old Junie B. Jones Book vibe
The thing about chaos is not that it's unpredictable but that it quickly becomes less deterministic as iterations increase. This is why statistics would be useful in this scenario. Reverse engineering may not be possible, but since most adaptations are preferential, not uniform, there has to be a correlation even in chaotic systems.
its because the magnetic fields shift a tiny way that changes everything
Hey Ted Ed You took part of think twice's vid and didnt give credit. You should give credit
**vogueing**
TURBULENCE!
YOU
SPILL
EVERYTHANGGG
Turbulence is not a DRINK, OR A PERSON. ITS JUST A PLANE ACCIDENT
AMBULAHNCE
YOU
BROKE
EVERYTHING!
Yes, I guess some member of Ted ed team was on that plane and came up with the topic
1:46 this is from Think Twice's channel!
Even if we are able to fully understand it, in the sense of what it described in this video, we’ll never be able to make meaningful predictions that we can apply to real-world problems because of the increasing difficulty in defining the real-world parameters to define the state of a system as a starting point. Truly understanding turbulence, however, is actually akin to being able to completely mathematically describe the game of life. When a system is so complex, with increasing levels of complex interaction, it’s essentially not possible for us to be able to fully describe it mathematically. It’s a level of complexity that’s beyond our capability to fathom, even with the fastest possible conceptual computing devices.
Ted-Ed is such a unique educational channel; entertaining us with their animation and the soothing voice of the narrator. Keep it up!!
THE ANIMATION IS SO GOOD AND HUMOROUS TOTALLY LOVED IT!
1:46 Now I'm not saying you stole this, put it through a filter, and then used it in your video without giving credit, but... You stole this, put it through a filter, and then used it in your video without giving credit.
Link to the original video: ruclips.net/video/d0Z8wLLPNE0/видео.html
This is one of the first physics mysteries that I fell in love with, and you captured it wonderfully!
Ice doesn't sink
...
Hey, you used the Think Twice animation!
THINK TWICE before the TURBULENCE hit you
*Oh they're right! You didn't credit Think Twice for the pendulum clip.*
*I AM ALWAYS ROOTED TO THE TED ANIMATIONS AND FORGOT EVEN WHAT THE NARRATOR IS TALKING ABOUT...I LOVE YOU TED*
I love how you animated turbulence to explain its simple aspects.
this video literally just summed up a whole chapter of turbulence
I'd like a copy of the TED ed daily please
How is his voice so calming i-
can I just say that this animation is soo adorable and awesome?
I have giggled quite a few times during the video
Who else expected this answer to be simple ?
3:14... well ice doesnt sink in water here.🤔
Lol yeah 😂
you assume it is ice but they never said it was ^^
Okay the honey, water, and ice is forgivable simply because how gorgeous the animation was done and appreciate laying the ambient sound on being on the plane nicely done.
The guy that drew the animations of this video rocks!
1:50 why do y'all think it's okay to steal from other people's videos? just because you're verified doesn't mean you're immune to the concept of plagiarism
This video is coincidental since Vox uploaded a video today also about planes lol :p
Whoever did the animation on this, you made me laugh on a Monday with very little sleep and way too much work. Basically, you are a wonderful person 🧡💚
Interesting video but we do know what causes turbulence in flight and have for a long time. Different densities in air swirl constantly through the atmosphere and as you cross these boundaries turbulence is induced in the boundary layer due to the rapidly changing air density. This is why you have turbulence more reliably in some places or when a big front/storm is coming through.
3:09 when ice sinks in water:
WAIT THAT'S ILLEGAL!
Also sinks in honey
Ted-ed
Thanks for this video as it was very informative on one of the most asked questions
TED Ed never stops teaching you new stuff, and that’s what I like about it: 👍🏻
CONSIDER THE FOLLOWING: While not all matter is considered magnetic, all matter can be affected by magnetism due to in large part the magnetic fields generated by the moving electrons in matter. Moving matter also has moving magnetic fields that interact with other matter and their moving magnetic fields. (And this includes cosmic energy and matter coming into our atmosphere).
ahhh...just in time when I try to procrastinate from writing my graduate thesis.....about turbulent flows
Boy this sounds interesting
Safir if u can go to my page and watch Victim
In electrical engineering we study Eddies currents, never thought a similar concept existed for fluids.
Again, a great video from Ted-Ed with the best illustration and animation, also a very understandable naration!
Always be your fans, Ted - Ed!
"Eddies," said Ford, "in the space-time continuum."
"Ah," nodded Arthur, "is he. Is he."
Credit the pendulum graphic from 1:46 please
Andrey Kolmogorov's work is still the best regarding Turbulence.
when reynolds number is close to 1,the flow is said to be creeping flow
in creeping flow ,frictional drag is dominant ,as honey is more viscous
the drag is incredibly high
stoke's law
thanks for stealing from the youtube channel "Think Twice" at 1:46 from Think Twice's video "Double pendulum | Chaos | Butterfly effect | Computer simulation"
Wait. Ice floats!
i hope u are kidding cause u did not pay attention to what he said if u think so :)
This is a very informative clip about PMS.
the best scientific channel at all : أفضل قناة علمية علي الإطلاق👍
0:20 When you're so done with life
1:48 is it just super similar or is that from think twice's video without credit
I love the animation and narration of this video
The more educational channels I stumble across on RUclips the more I am able to appreciate the quality of your content when i eventually turn back to TED_Ed. Thank you for your effort!
1:46
They copied think twice channel animation from double oscillation video
Was the chaotic system animation taken from Think Twice?
1:47 - 2:00 hey that clip is from Think Twice
Wow I just rode on a plane yesterday and did tons of research on turbulence and this video was just uploaded. Very strange
1:47 hey did you steal Think Twice’s animation?
Sometimes I feel like I’m the only one who actually likes turbulence. Like as long as the plane isn’t violently ripping apart or dropping hundreds of feet out of the air, I’m chilling.
It’s like a mini roller coaster for me!
There is already an existing equation for determining how far wind turbines should be apart, as to not lose efficiency due to turbulence. Pretty sure it was developed at 'Risø DTU National Laboratory for Sustainable Energy'
Great, turblance is chaotic....That doesn't help my fear of flying.
1:46 credit this man you bums
First
man to go to moon was Neil Armstrong
aayus patre
Good!
you must be fun at party
How do you guys select the excellent topics........this channel is addictive.
The animation is smoother than turbulence
3:08 . False, ice is less dense than water. Hence, it will float
Yash Sawalkar damm you studied specific gravity damm smart
Also it depends on the the mass of the ice
@@ravitripathy2479 You should go back to school
Turtle Burger what do you mean
😳Sorry for the above comments,I wasn’t thinking straight i should of applied the formula d=m/v.So I am wrong also I am in I sixth so-😬
I don’t care WHY it happens ‘cause every time it does, I see my life flash before my eyes. Like, I start saying my prayers and mentally prepare myself for death.😂
Thats why i havent flown in 4 years, fear of heights lol plus turbulence. Not a good combination
Miss Ravenclaw when I feel a turbulence I go like “YEEEHAH!”
lol true
@@Obsessivemind I feel you. Im the same way but I know Im missing out
I hate it. I prepare for my death and start sweating profusely and feel so dizzy afterwards
THIS IS GOLD.
Transcript
You’re on an airplane when you feel a sudden jolt. Outside your window, nothing seems to be happening, yet the plane continues to rattle you and your fellow passengers as it passes through turbulent air in the atmosphere. Although it may not comfort you to hear it, this phenomenon is one of the prevailing mysteries of physics. After more than a century of studying turbulence, we’ve only come up with a few answers for how it works and affects the world around us. And yet, turbulence is ubiquitous, springing up in virtually any system that has moving fluids. That includes the airflow in your respiratory tract. The blood moving through your arteries. And the coffee in your cup, as you stir it. Clouds are governed by turbulence, as are waves crashing along the shore and the gusts of plasma in our sun. Understanding precisely how this phenomenon works would have a bearing on so many aspects of our lives. Here’s what we do know. Liquids and gases usually have two types of motion: a laminar flow, which is stable and smooth; and a turbulent flow, which is composed of seemingly unorganized swirls. Imagine an incense stick. The laminar flow of unruffled smoke at the base is steady and easy to predict. Closer to the top, however, the smoke accelerates, becomes unstable, and the pattern of movement changes to something chaotic. That’s turbulence in action, and turbulent flows have certain characteristics in common. Firstly, turbulence is always chaotic. That’s different from being random. Rather, this means that turbulence is very sensitive to disruptions. A little nudge one way or the other will eventually turn into completely different results. That makes it nearly impossible to predict what will happen, even with a lot of information about the current state of a system. Another important characteristic of turbulence is the different scales of motion that these flows display. Turbulent flows have many differently-sized whirls called eddies, which are like vortices of different sizes and shapes. All those differently-sized eddies interact with each other, breaking up to become smaller and smaller until all that movement is transformed into heat, in a process called the “energy cascade." So that’s how we recognize turbulence- but why does it happen? In every flowing liquid or gas, there are two opposing forces: inertia and viscosity. Inertia is the tendency of fluids to keep moving, which causes instability. Viscosity works against disruption, making the flow laminar instead. In thick fluids such as honey, viscosity almost always wins. Less viscous substances like water or air are more prone to inertia, which creates instabilities that develop into turbulence. We measure where a flow falls on that spectrum with something called the Reynolds number, which is the ratio between a flow’s inertia and its viscosity. The higher the Reynolds number, the more likely it is that turbulence will occur. Honey being poured into a cup, for example, has a Reynolds number of about 1. The same set up with water has a Reynolds number that’s closer to 10,000. The Reynolds number is useful for understanding simple scenarios, but it’s ineffective in many situations. For example, the motion of the atmosphere is significantly influenced by factors including gravity and the earth’s rotation. Or take relatively simple things like the drag on buildings and cars. We can model those thanks to many experiments and empirical evidence. But physicists want to be able to predict them through physical laws and equations as well as we can model the orbits of planets or electromagnetic fields. Most scientists think that getting there will rely on statistics and increased computing power. Extremely high-speed computer simulations of turbulent flows could help us identify patterns that could lead to a theory that organizes and unifies predictions across different situations. Other scientists think that the phenomenon is so complex that such a full-fledged theory isn’t ever going to be possible. Hopefully, we’ll reach a breakthrough, because a true understanding of turbulence could have huge positive impacts. That would include more efficient wind farms; the ability to better prepare for catastrophic weather events; or even the power to manipulate hurricanes away. And, of course, smoother rides for millions of airline passengers.
Ice cube floats on water right? 3:08
Sometimes
He dropped with so much velocity but eventually it will float.
Water has a special property. It's density changes with temperature, it isn't proportional because sometimes it increases as the temperature increase and sometimes it decreases as the temperature increases.
I aways thought that turbulance was when the plane just crash into some bird or something caught in the propelar
Love how they show ice sinking in water in a science video
Turbulence and Quantum Mechanic are the biggest topic of classic physics because they are related to time and space.
These 2 theories can be the key for time travel.
00:23 That baby...4:45 that baby again..😍
Finally something which I already knew.. Hash, now I can die in peace!
I don't know why but I found 0:25 absolutely hilarious.
Everyone is so tense and then there is a baby having a great time out of nowhere xD
This is how something should be taught
Turbulence doesn’t really scare me. I’ve been on a lot of flights XD too many.
Turbulence the reason I hate flying.
ikr lol, it makes me anxiety
“ikr lol, it makes me anxiety”
Christianto Ming - 2019
Who knew that some wiggly air could be so complex. 🤔
0:24 literally made me smile
You've used ice cube to demonstrate viscosity at 3:08 but ice cube generally floats in water right.....
Ted-Ed, I have a question that I have always wondered, "Will time also collapse if everything in the universe, including the universe, stopped moving and get stopped?" Well, how will we measure the period for which it stopped without time being there, and how will the universe resume when time already collapsed?
Please show support so that my question reaches Ted-Ed team.
*WhAT HaVe YOu doNe!?!?*
@@j_d_gamer2091 What do u mean?
@@shreyanshmishra3278 He means 🤯 *I cAn't eVEn!!* 🤯
🤯 *I cAn't eVEn!!* 🤯
By "stop", do you mean loosing its kinetic energy instantaneously?
Disregarding *inertia*, I think this concept is cool.
Just a thought, will this phenomena occur when every particle in a universe suddenly reach absolute zero?
Didn't understand a word but I really liked the soothing voice.
Me: Hello, this is your captain speaking. We may experience light turbulence as we prepare for landing. Thank you for your cooperation.
Everyone else on the falling school bus:
*Petrified tom face*
Same dude same...