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The Surprising Secret of Synchronization

Veritasium - 2021-03-31

How does order spontaneously arise out of chaos? This video is sponsored by Kiwico — go to https://www.kiwico.com/Veritasium50 for 50% off your first month of any crate.

An enormous thanks to Prof. Steven Strogatz — this video would not have been possible without him. Much of the script-writing was inspired and informed by his wonderful book Sync, and his 2004 TED talk. He is a giant in this field, and has literally written the book on chaos, complexity, and synchronization. It was hard to find a paper in this field that Steven (or one of his students) didn't contribute to. His Podcast "The Joy of X" is wonderful — please listen and subscribe wherever you get your podcasts https://www.quantamagazine.org/tag/the-joy-of-x

Nicky Case's Amazing Firefly Interactive — https://ncase.me/fireflies

Great Kuramoto Model Interactive — https://www.complexity-explorables.org/explorables/ride-my-kuramotocycle

References: 

Strogatz, S. H. (2012). Sync: How order emerges from chaos in the universe, nature, and daily life. Hachette UK. — https://ve42.co/Sync

Strogatz, S. H. (2000). From Kuramoto to Crawford: exploring the onset of synchronization in populations of coupled oscillators. Physica D: Nonlinear Phenomena, 143(1-4), 1-20. — https://ve42.co/Strogatz2000

Goldsztein, G. H., Nadeau, A. N., & Strogatz, S. H. (2021). Synchronization of clocks and metronomes: A perturbation analysis based on multiple timescales. Chaos: An Interdisciplinary Journal of Nonlinear Science, 31(2), 023109. — https://ve42.co/Goldsztein

The Broughton Suspension Bridge and the Resonance Disaster — https://ve42.co/Broughton

Bennett, M., Schatz, M. F., Rockwood, H., & Wiesenfeld, K. (2002). Huygens's clocks. Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 458(2019), 563-579. — https://ve42.co/Bennett2002

Pantaleone, J. (2002). Synchronization of metronomes. American Journal of Physics, 70(10), 992-1000. — https://ve42.co/Pantaleone2002

Kuramoto, Y. (1975). Self-entrainment of a population of coupled non-linear oscillators. In International symposium on mathematical problems in theoretical physics (pp. 420-422). Springer, Berlin, Heidelberg. -- https://ve42.co/Kuramoto1975

Great video by Minute Earth about Tidal Locking and the Moon — https://ve42.co/MinuteEarth

Strogatz, S. H., Abrams, D. M., McRobie, A., Eckhardt, B., & Ott, E. (2005). Crowd synchrony on the Millennium Bridge. Nature, 438(7064), 43-44. — https://ve42.co/Strogatz2005

Zhabotinsky, A. M. (2007). Belousov-zhabotinsky reaction. Scholarpedia, 2(9), 1435. — https://ve42.co/Zhabotinsky2007

Flavio H Fenton et al. (2008) Cardiac arrhythmia. Scholarpedia, 3(7):1665. — https://ve42.co/Cardiac

Cherry, E. M., & Fenton, F. H. (2008). Visualization of spiral and scroll waves in simulated and experimental cardiac tissue. New Journal of Physics, 10(12), 125016. — https://ve42.co/Cherry2008

Tyson, J. J. (1994). What everyone should know about the Belousov-Zhabotinsky reaction. In Frontiers in mathematical biology (pp. 569-587). Springer, Berlin, Heidelberg. — https://ve42.co/Tyson1994

Winfree, A. T. (2001). The geometry of biological time (Vol. 12). Springer Science & Business Media. — https://ve42.co/Winfree2001

The Manim Community Developers. (2021). Manim – Mathematical Animation Framework (Version v0.13.1) [Computer software]. https://www.manim.community/

Special thanks to Patreon supporters: Mac Malkawi, Oleksii Leonov, Michael Schneider, Jim Osmun, Tyson McDowell, Ludovic Robillard, jim buckmaster, fanime96, Juan Benet, Ruslan Khroma, Robert Blum, Richard Sundvall, Lee Redden, Vincent, Lyvann Ferrusca, Alfred Wallace, Arjun Chakroborty, Joar Wandborg, Clayton Greenwell, Pindex, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi, Ron Neal

Written by Derek Muller and Petr Lebedev
Animation by Fabio Albertelli and Jakub Misiek
Simulations and 3D Animation by Jonny Hyman
Filmed by Derek Muller and Raquel Nuno
Edited by Derek Muller
Additional video supplied by Getty Images
Thumbnail by Ignat Berbeci

More footage from NASA's Scientific Visualization Studio

100 metronome video from https://www.youtube.com/watch?v=suxu1bmPm2g

Intro animation by Jorge Cham

Thanks for the BZ footage from SteinbockGroup: https://www.youtube.com/watch?v=IJn1ssZEyns and 
NileRed https://youtu.be/LL3kVtc-4vY

Animation of waves in the heart from The Virtual Heart/ EM Cherry/ FH Fenton — https://ve42.co/Cardiac and https://ve42.co/Cherry2008

Chemical materials and protocol provided by Mike Morris and the UCI Chemistry Outreach Program https://www.chem.uci.edu/~jsnowick/outreach/UCI_Outreach/index.html

Thanks to Alie Ward for title/thumbnail consultation
Thanks to Dr Juliette Becker and Dr James O'Donoghue for the planetary science help

Music from Jonny Hyman, Epidemic Sound https://epidemicsound.com "Seaweed" "Deeper Than The Ocean" "Ripple Effect"
Music also from Artlist https://artlist.com "Children of Mystery"

Thumbnail by Ignat Berbeci

Mr. Person Humanson - 2021-04-02

Don't you just love it when you're just about to go to sleep, then you accidentally discover a new scientific phenomenon

Ace Proffitt - 2022-09-11

Oh absolutely

KeanoBo$$ - 2022-09-14

Just happend🤣🤣

linglingwannabe - 2022-10-10

And it keeps u awake thinking

Tigger - 2022-10-28

🤣🤣👍👍

Women - 2022-10-29

Exactly

Marq Jaqobs - 2022-05-12

Ever since I was a child, I've noticed that when people walk together, they end up walking with synchronized steps. I thought it was some kind of telepathy or, at least, a no-verbal communication. I never realized it is actually a phenomenon in physics and chemistry.

bumbleboo twiddletoes - 2022-08-31

@Algorithm Destabilizor you make zero sense

bumbleboo twiddletoes - 2022-08-31

I have never once noticed this, and anytime I've paid attention to it the steps have not been synchronized. You'd have to have the same length legs, be going exactly the same speed, and actually care that the other person looks more stable to you. I usually look at the ground while walking.

Nugboy 420 - 2022-10-02

I’m rewatching this a year out and tho I didn’t know/remember going into this, I had a feeling I knew a few versions of the BZ reaction

Nugboy 420 - 2022-10-02

Oops meant to be it’s own comment ^^^^^

Astralr01 Astralr01 - 2022-10-17

@bumbleboo twiddletoes Yes, it's just people try to believe in what they have been told. I always look at my steps (many people says I keep looking at the ground lol). As you said it's not. People keep their speed because people in the front but their step are different. People even bump together sometimes. The rational explanation from Georgia and Bristol University is people keep their balance on the sway bridge so they make bridge more shaking as a result. You know it's the same when you take a bus,train,bike and etc. But the bridge is not direct interact with ground so these turn out shake it more.

Trade Kings - 2022-10-23

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Marian Parker - 2022-10-23

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Buddy Holly - 2022-05-09

Breaking lockstep or cadence is hard. I noticed this during my many years in the Army. Going from double time to quick time march, brings a formation into lockstep extremely fast. Run to walk is what this means. A group of SMs (Service Members) just casually walking is in lockstep. That being drilled into your head day after day and year after year….is a habit not so easily broken. Kinda impressed more Brit SMs didn’t cause bridge collapses.

gettingkilt - 2022-08-06

Training service members to walk in step is easy. Training then to suddenly walk out of step must be quite hard.

M M - 2022-08-12

Columns 2, 3, 5. Change step, march!

Astrobrant2 - 2022-08-22

Buddy,
That probably applies to musicians as well. I've caught myself mentally relating my footsteps to a musical tempo. Powers of two dominate my rhythms. When I was young and ran a quarter mile or more, I would breathe in rhythm with my feet (every four steps). When that wasn't enough I would change it to every three steps. Just think waltz! It really seemed to make the running easier.

I also went to a quasi-military school for 11 years -- lots of marching -- and was in the band. If anybody unconsciously does things in cadence, it's me. That said, I really don't find myself walking in lockstep with other people unless it was when holding my wife's hand. However, my left foot is permanently on an odd number. IOW, if I'm walking in beat with some music, I almost can't have my left foot on an even beat. Funny thing, though, if I'm walking when walking-speed music is playing, I actually consciously force myself to walk at a different pace. I don't know why.

Ophelia Rolle - 2022-08-28

@Astrobrant2 Maybe the speed of the music. I just read about a theory of difference between men and women and how certain types of music impacts their speed and behavior while driving. So why not walking? In your case it makes me think of power walking to high intensity workout music.

Chris Davis - 2022-10-02

@christopher knowles can't tell if you're saying that ironically or not

WalrusRider - 2022-05-09

Interesting. I thought it would be a video on standing waves and natural vibration frequencies

Joe Deer - 2022-05-10

@Carolyn Cool no you did not

Dr. Bench Canister - 2022-05-10

@uncannily I thought it would be on people who still don't understand this is internet and videos have no age....

rolturn - 2021-03-31

This channel is what the Discovery Channel was like to me when I was a child. I love how it brings life to "uninteresting" subjects.

P J - 2022-10-15

Still boring and useless information for the mass.

Jacob Tyndale - 2022-10-16

@Wrulol the

Jacob Tyndale - 2022-10-16

@Wrulol the

Jacob Tyndale - 2022-10-16

@Franco D Angelo the

Jacob Tyndale - 2022-10-16

@Franco D Angelo the

Mr. Jake - 2022-05-08

I have always been amazed when I synchronize with a complete stranger going to work in the morning on a consistent yet intermittent basis.
I am referring to the situation where you are on your way to work
in your car and you come to a four-way stop sign and this person is in their car and they stop at the same intersection at the same time as you--on a somewhat regular basis.
It does not happen every morning but it happens often enough to where you easily recognized their car with a certain level of expectation.
You do not know this person, you do not know where they live, but we are both going through similar rituals every morning...alarms going off, showering-up, making coffee, getting dressed, grabbing your stuff and heading out the door....starting your car....adjusting the seat belt, getting the radio tuned and Bamm... within the window of a half second you both pull up to the same four-way stop. You are heading North and they are heading West.

Amazing synchronicity.

Kevin Whitely - 2022-08-16

Yes, I have also being amazed when all the strangers in different cars all stop in front of red traffic lights.

Jenna Halcomb - 2022-08-20

This always completely blows my mind but this happens to me all the time

enicotinic - 2022-08-27

Thanks for putting it into words so eloquently. 👍!

injusticehurley - 2022-10-06

I think you have a stalker. 👀😂

Want - Diverse Content - 2022-10-17

@Hank Roest I propose we're hanging on schedules.

James B. - 2022-08-04

I used to practice jumping into lock step say, with my dad or someone I was walking and talking with. Walking while holding hands, I found, is another way of being in synchrony! It's a lot like drumming in a big circle and locking up with a synchronous rhythm with everyone else. It is amazing to experience the sudden coalescence and to even introduce a new movement and feel the effect it has on the whole group.

MrChrispy777 - 2022-05-21

One summer evening, in Pennsylvania, I was witness to a huge cloud of lightening bugs, against a pastel sky, at sunset. Additionally, up on a hill, the chimes of a church played a melodious hymn, which tune floated over the small town. The gentle pace of the hymn was synchronized with the lighting of the bugs, as they kept a beat. It was a magical moment, that I wish I could've captured on video..

sergio hernandez - 2022-07-12

Check out smarter everyday he just did a video on those

MrChrispy777 - 2022-07-12

@sergio hernandez
I'm not sure what you're referring to. Would you please specify.

sergio hernandez - 2022-07-12

@MrChrispy777 "smarter everyday." Is the name of the channel, Destin made a video on those lightning bugs

BidenisGod! - 2022-05-12

I think synchronicity is like attraction. Everything wants to be like it’s neighbor (for lack of a better example) and tends to sync to it or a group. I was looking at trees and noticing how they tend to lean to each other say on a street or parking lot.

CrazyGaming - 2021-05-31

I really like how these videos immediatly start on the subject, no obnoxious minute long boring introduction of "sub this, like that, hit notifications, check my bro's channel blah blah" followed by minute long sponsor messages. No instead just a short message "sponsored by Kiwico, more about that in the end of the video". That's it. Thank you, that's how to do it!

CrazyGaming - 2021-08-24

@The Trickster oh ok. so 1 lakh is 100k, gotcha, 90 lakh would 90 x 100k = 9 million.

The Chad Dad - 2021-08-24

You don't like seeing forge of empires ads before your watch video?

CrazyGaming - 2021-08-25

@The Chad Dad sorry yeah, I forgot about them since I use an adblocker. It doesnt block ads that arent obnoxious, but youtube ads are notoriously obnoxious so all ads are always blocked. Until they make ads that arent obnoxious im going to keep using adblockers to get rid of them.

My OP was minded on Veritasiums sponsor messages.

Glendy Beatriz - 2022-08-07

@Anky Spon I’m too excited to watch another video by him that I forget to like.. everytime

F V - 2022-09-03

"link in the description " "here's the family dog, say Hi" 🙄

Bruno Savastano - 2022-09-20

ever since i watched this video for the first time, about a year ago today, I began spotting synchronization quite more often. it fascinates me.

dat vergil doe - 2022-05-07

The more I learn about science the more I understand just how important Huygens was. I learned about him in my adult years. Truly a remarkable mind.

Vegan Pete - 2022-08-11

Science is just a clumsy approximation of nature - if you find science so remarkable, just imagine how much your mind will be blown when you start to embrace nature.

Ibu Kondo - 2022-07-01

Regarding the gravitational synchronization effect that was demonstrated with the graphic or our moon, would that also imply that, given enough time, our own planet would be tidally locked with the Sun?

L - 2022-07-25

Stephen Strogatz is one hell of an author. After one semester of differential equations you're ready for his book, Nonlinear Dynamics and Chaos .

A M P - 2021-03-31

That guy he interviewed was like a mathematician, chemist, physicist, civil engineer/ architect, astronomer, medical doctor combined!

HANO ROAM - 2021-04-01

@Kilans Games i thought the same

Zubin Madon - 2021-04-01

That's complex systems for ya! Very cross-discipline as the field is currently quite young.

Steven Strogatz - 2021-04-01

Aww, thanks! [red face]

pinky - 2021-07-05

but was his name Jack... :P

Mikhail Mikhailov - 2022-08-28

@Jason Schuler Its also quite easy to approach those subjects with a background in mathematics. Having a good understanding of mathematics makes understanding what is happening in chemistry much much easier. It wont make you a professional in such endeavours - they require hands on skills that you dont have as a mathematician. Its like the difference between doing car repair and statistical physics - sure I can understand the internal processes happening inside an engine perhaps even better than a car technician, but I wouldnt get in and start messing with it with my hands.

Baleur - 2022-10-11

It's almost like gravity, in a way.
The further "lagging" or behind you are to the major group (highest mass), you accelerate.
The further "ahead" you are of the major group (or mass), you decelerate.

2C_4M - 2022-07-29

This video was SO GOOD. Absolutely loved hearing Pr. Strogatz talk, what an incredible final thought he shared.

tweeleaf - 2022-05-09

12:50 This is also quite similar to the Briggs-Rauscher reaction. In fact, like the opposite. In the BR reaction, faint orange-ish liquid changes into an opaque dark blue color, only for a brief moment. In the BZ reaction, it is in the middle between opaque and clear. Dark orange turning into a light blue in a more equal time gap between the color switches.

Zabb Wolfe - 2022-07-20

I remember one time in elementary school, our teacher told us how disrespectful it was to clap in sync and how the people who were "starting the synced clapping" were trolls, etc. At the time none of us knew any better, but now this explains why we were all clapping in sync without trying haha

Bob S - 2022-07-29

People hear others clapping in sync and join in. People are highly social especially in group settings.

ERDFCN3040 - 2021-05-06

I'm from Russia and I watch your videos, but I watch your videos from another channel that does Russian voice acting. But I still go to your channel looking for the right video and put a like. It was you who instilled in me a love for physics and I would like to say a huge thank you! You probably won't even read this comment, but I still want to write it. Thanks!

Sriv Gamez - 2021-07-23

Let’s make Derek see this comment

Joel Varghese - 2021-07-23

@J P No hate but they must have just used google translate, but yeah I appreciate their effort.

Alluseri - 2021-08-05

Круто(похуй)

DJM 74 - 2022-05-08

Oh wow, that's so fascinating! How easy us only English speakers have it!!! Any great Russian channels (with subtitles) you could recommend? Science, comedy, etc?? (I don't think Crazy Russian Hackers counts anymore hey lolol - I already follow him anyway 🤭)

ChickenBob - 2022-07-09

@Blitzmister yes and no

but still, don't forget that people from russia have to learn not only another language, but also a completely different alphabet using cometely different symbols

I'm from germany and I would say that I had a lot easier time learning english than someone coming from Russia, China, Japan, etc.

there are also a lot of people from these places that can speak some English but can't write it
same as i know some Russian words but i could never write them in cyrillic

Griffin Fornell - 2022-09-12

There is a fascinating implementation of this concept in high end mechanical watchmaking. There is essentially two mechanisms (escapements) which synchronize and theoretically serve to divide errors in ratekeeping. The F.P. Journe Chronometre Resonance is my favorite example. Unfortunately, one will set you back about as much as a nice American home.

P - 2022-05-23

You can't correlate people clapping to phase transition because people have cultural biases to clap in that manner from experience rather than synchronization. During mass clap someone with louder clap could have provoked it's neighbors and then it spreads. It's not synchronization of frequencies. People with completely different cultures might not have same result.

Drzeq - 2022-05-11

5 + 5 =/= 10
Basically when you take a mechanism with 5 parameters and combine it with another mechanism with 5 parameters, the outcome complex mechanism will have much more than 10 parameters that need to be taken into consideration.

harshith swamy - 2022-07-27

Its just amazing to find the video which is started with pendulum clocks synchronization and traveled through chemical , electrical and ended with the quest to find the properties of whole system using its smaller parts ,which i think everybody is struggling to do it now ! great video

WiZarD - 2021-03-31

Can we all take a moment to appreciate such knowledgeable content for free on this platform...

Jesper Johansson - 2021-03-31

@Was Once Thør it used to be much, much better. It has only gotten worse. The people in charge only care about profit, not quality.

TMK - 2021-03-31

Free to us but youtube and ads pay for it. We are the product dont forget that

carefulcarpenter - 2021-03-31

@TMK Your attention is a commodity.

Justin Clonts - 2021-04-02

WHAT A TIME TO BE ALIVE

Russell Pizel - 2022-01-26

There used to be so much more, before it was purged for ideological reasons. You're now only seeing filtered content, and I guess, from what I learned from this video, that we will all start beating the same drum.

IceFalken Ace - 2022-09-01

I wonder if a cruise ships dampening system, that reacts to cancel out sway, could be used to eliminate bridge sway issues? Water tanks on either side of a section of bridge could work passively or actively.

We'd need to treat the bridge as if it had several sections with a dampening system for each one. Perhaps all the tanks could be linked together so the water weight is shared and could be redistributed as needed?

The presence of water ballast tanks on a bridge section would already provide some dampening of vibration as it would simply be absorbed by the water inside the tanks. But once sway was introduced the water would resist that sway while an active gyroscopic system could respond faster and more precisely.

Eman Ruoy - 2022-05-07

This reminds me of Itzahk Bentov's Stalking the Wild Pendulum. He was a classic genius. It's 50 yrs old now but still just as valid as when he wrote it.

Christoph Granz - 2022-08-07

Great video! I noticed that there should be some logic behind resonance and synchronisation, but with your explanation I understood it right away. Thank you a lot! 👍

edward mac nab - 2022-05-11

Mathematically the term Chaos , doesn't actually mean chaos . It means something more like , complicated . I would think that real chaos would be almost impossible to occur , actually , and that things just get more and more complicated . BTW , this was a really great video !

mambagr - 2022-05-22

In Greek chaos means complicated but disordered.

edward mac nab - 2022-05-22

@mambagr mathematical chaos is ordered

Ron P - 2022-07-14

Had to laugh when it occurred to me that chaos has historically been labeled as the feminine...complicated?

edward mac nab - 2022-07-14

@Ron P Chaos has a gender ? News to me !

Lindsey B Hui - 2022-07-24

I love that!
My mind is flashing with that idea *

wasaglass - 2022-01-29

I watched this earlier, and I was thinking about how it relates to the concept of "sanity" and if sanity really just means synchronicity. When people get isolated they often lose their minds and become out of step with normal thinking and behavior. I wonder if it's really a question of socialization keeping people "sane" or just keeping them like other people.

Stephen Farrugia - 2022-06-06

When a child loses it and starts to cry, a good hearted mummy puts the palm of her hand on the child's head and calms her down. How does she do it? Synchronization! Some persons claim to have the gift of touch, they touch people to cure them. Same thing, synchronization. Maybe one day, instead of pushing chemicals down our throats, scientist will manage to delve deeply into the 'mechanical' brain and see where this synch is failing and use alternative medicine (metronomes) to fix heads. Wouldn't that be nice?

Ruben Misrahi - 2022-06-17

Interesting idea: social synchronicity. Think of generational behavior, think of societies that have become convinced that Nazism is right, crowds that suddenly become violent.
Excellent point

ande28 - 2022-07-04

@Hercules Balls This is true in my experience. I feel isolated and alone when I get the feeling that I’m out of sync from everyone else.

Faraz Khan - 2022-07-06

..great observation. I think the psychedelic thinkers like Terence McKenna and the psychedelic experience itself argue (really well) that Culture nothing but is a collective hallucination.

Hercules Balls - 2022-07-09

@js2010ish I'm afraid I know know of any good books on Wittgenstein (not that there aren't any - I just don't know of them), but some great books on abnormal neurology are written by Oliver Sacks who uses them to highlight how much actually goes into most folks 'normal' experience without them being aware of it. One of the first and most popular was 'Anthropologist on Mars', but I think he wrote three or four altogether. I'm sure Amazon or Barnes and Noble will bring them all up. Very readable and not too technical.

Nima Master - 2022-05-16

This was simply the best scientific video I've seen in a good while! Looking forward to more!

Peteri Davies - 2022-07-30

This simplistic explanation was so immediately and intensely enlightening.
I wish I could learn other topics so easily.

Crowald - 2022-07-25

One of my favorite things to do in school was in gym class, while we were learning about basketball. There were 30 kids in my elementary school gym class and every one of us had a ball. When doing dribbling exercises, I noticed this phenomenon for the first time, and I was kind of amazed that no one else had paid attention to it. When everyone sort of locked in sync, I purposely broke the sync and went against the flow. Interestingly, even though I broke the synchronicity, eventually so did everyone else; but what truly threw me for a loop was when everyone starting synchronizing with MY pattern instead of coupling to someone else's.

Even if you try to purposely break the system, it just adapts, and it's no great wonder that the good professor Strogatz loves the concept so much, it's truly incredible that it permeates every facet of nature and synchronicity is almost integral to the universe.

Greg Anikin - 2022-07-25

That is why runners training in groups have greater success in running, there is always a stronger ones and weaker ones and weaker ones tend to reach stronger ones during their runs. Makes total sense! Pendulum effect in running.

Tomi Nigerian Inter Fan - 2021-04-01

Derek has just dropped 3 videos in a row that are straight up next level. Quite frankly they are cinema quality. He’s hitting out the park lately. Absolutely well done sir 👏🏿👏🏿

Stefania Smanio - 2021-04-01

and I clap in syncro....

Alan G - 2021-04-01

I know! He has come a long way since the channel started. I think he should have had a section where he asked a bunch of random Aussies on a day out to explain synchronicity, for old times sake.

Jeremy Davis - 2022-10-05

So this is kind of like how natural magnets get magnetized right? All of the atoms have their magnetic poles sync up due to, say, a strong electric field passing by. The difference in their random-seeming orientations cancel any macro-scale magnetism out, while the moment they line up it's like a state change where the macro object is now a magnet.

I could be wrong, but it seems very similar

ParlanceOpus - 2022-10-06

I feel like any acousticitian, and many musicians, would have spotted the millenium bridge flaw immeadiately. It's basic harmonics. The first harmonic of 1hz is 2hz. If 2hz is your problem frequency to avoid at all costs, there's no chance an acoustician would suggest 1hz as safe. It's a straight octave interval.

fizzy - 2022-07-24

After you take a differential equations class you're ready to read Strogatz's book on nonlinear odes, dynamical systems and chaos!! Outstanding author!! Some of that book references BZ reactions and the synchronizing fireflies.

MrJRoberts0113 - 2022-05-23

I hate to argue against the water bottle analogy, but anyone that has tried freezing a bottle of water or Gatorade on a hot day can tell you it doesn't just "freeze" all at once. The outside edges freeze, & the inside remains liquid & freezes last, which is why you get that shimmered white sparkle in the center, since ice expands on freezing, & with the outsides solid with nowhere to expand, the ice is actually densest at the center.

It takes extreme temperatures to flash freeze liquids.

Kino Kaedehara - 2022-06-24

I think they meant that the state of being freezing or not is binary, rather than liquid going from liquid to amorphous to solid slowly

William T - 2021-03-31

I wonder how this channel manages such high quality in as much quantity

Odjin - 2021-03-31

He's that good

Justin - 2021-04-07

It’s what happens when YouTube money is actually properly re invested back into the content

-e - 2021-07-07

budget

42 Keez - 2021-07-08

Team work

Dolls Krusz - 2022-08-03

@William T I was ready to read your comment and thought for SURE you were going to write: “Listen @Christian Horner! You should go back to your corner!” And then you would state your case. Such a missed opportunity…

Christopher Provience - 2022-07-26

here's my theory: each time one of them ticks while another one is out of sync, it causes a very slight delay in the next tick of the others that aren't in sync, eventually leading to them all ticking at the same time.

i should've watched the whole vid, you explained this literally 30 seconds later lol. and instead of a delay you described it as a "kick", so my guess was the opposite of what was occuring

C0nstellati0ns - 2022-08-01

This is actually amazingly thought provoking. Love it.

Jacob Bosley - 2022-08-12

The experiment to see if sound can stop tumors was a frequency sweep from 0-22 something. I've been using this as a means of defense from sound pollution and acoustics associated with piracy. When using several sweeps, even with different ranges and lengths, they still synchronize at intervals.

ThePapasmurf1946 - 2022-10-19

I have my own theory. It is "Thresholds". It seems that in all systems things go along according to a set of rules or laws until - a threshold is reached of size, velocity, weight, distance, synchronicity or whatever, and then everything changes, sometimes drastically (like the bridge). Combustion is a good example; an object heats up and cools down over and over without much change happening, but when enough heat is applied, it bursts into flame and all the previous rules no longer apply. One might mention the death of living things; it is a sudden and drastic change that happens when a threshold is reached. Stars going nova, suddenly changing in a most dramatic way is another example. A little too much pressure in a tire on a hot day, and blam! it blows out.
This entire video explores one type of threshold, and it is indeed a fascinating study.
I invite everyone to watch any two people walking together, talking and not paying any attention to their strides. I have seen this thousands of times - their footsteps are in a synchrony that seems so close to exact that I think it would, if measured, be correct within a few millimeters and thousands of a second.
Perhaps you will begin to notice these synchronies and other thresholds from now on. Enjoy!!

Ahmad Khilfi - 2021-04-29

Whenever a lot of people are having a chat to the point where the room was so noisy and then suddenly everyone just stop talking to complete silence is someting that is mesmerising and scares me. It's like they/we unknowingly agree to stop talking at the same time

Ali Imran - 2022-05-07

@Vincent Highwind My best friend from Alabama breaks the silence by saying : " boggie boggie blister, I nuts in my Sister"

wingerrrrrrrrr - 2022-05-10

And then you only hear the guy talking about his hemorrhoids, because he just don't care.

LIONARTO - 2022-05-12

🙌🏻

Zino - 2022-05-13

Omg!! We used to say that an angel just passed by when that happens. 🤣

Germán Salas - 2022-05-26

@𝔗𝔥𝔢 𝔗𝔥𝔦𝔯𝔡 𝔈𝔶𝔢 perhaps

jorge arreola - 2022-09-02

Great video. I'd recommend Steven Strogatz 'SYNC" to anyone interested in the phenomenon of synchronization. It blew my mind.

Reagan Doyon - 2022-06-16

I genuinely have so much respect for this channel. The animations that go along with the information that is presented make this channel so much better than any other one like it.

Fil Magnoli - 2022-05-17

Amazing to watch … I always land on the same question when I watch this, or similar, videos … what do I do with this information? How do I apply it, or use it? Make something from it? It’s amazing, but frustrating in asking, “so what do I do with this information or knowledge?”

Keep posting, great stuff! :)

Debbie R - 2022-07-20

Perhaps theres more to this realm than we can see by using our capacity for logic and reasoning. The experience of wonder and awe can be thresholds to perceive the presence of a higher meaning or greater purpose for every one of us. (PS, I don't believe chaos exists, only order that's too big or too complex for us to understand, yet.)

Paul W Franklin - 2022-10-23

Not exactly synchronicity, but kinda similar:
Once during lunch at school, the whole dining room fell silent, without prompting. I guess one area just all stopped talking at once, then that gradually spread as kids assumed that we'd been asked to be quiet, and in a few seconds it was silent. We all looked at the Headmaster, who looked back, bemused, and told us to carry on :) Mad.