The Secret of Synchronization

31 mar 2021
6 197 864 Áhorf

How does order spontaneously arise out of chaos? This video is sponsored by Kiwico - go to 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
Nicky Case's Amazing Firefly Interactive -
Great Kuramoto Model Interactive -
Strogatz, S. H. (2012). Sync: How order emerges from chaos in the universe, nature, and daily life. Hachette UK. -
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. -
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. -
The Broughton Suspension Bridge and the Resonance Disaster -
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. -
Pantaleone, J. (2002). Synchronization of metronomes. American Journal of Physics, 70(10), 992-1000. -
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. --
Great video by Minute Earth about Tidal Locking and the Moon -
Strogatz, S. H., Abrams, D. M., McRobie, A., Eckhardt, B., & Ott, E. (2005). Crowd synchrony on the Millennium Bridge. Nature, 438(7064), 43-44. -
Zhabotinsky, A. M. (2007). Belousov-zhabotinsky reaction. Scholarpedia, 2(9), 1435. -
Flavio H Fenton et al. (2008) Cardiac arrhythmia. Scholarpedia, 3(7):1665. -
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. -
Tyson, J. J. (1994). What everyone should know about the Belousov-Zhabotinsky reaction. In Frontiers in mathematical biology (pp. 569-587). Springer, Berlin, Heidelberg. -
Winfree, A. T. (2001). The geometry of biological time (Vol. 12). Springer Science & Business Media. -
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
GFX 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
Intro animation by Jorge Cham
Thanks for the BZ footage from SteinbockGroup: and
Animation of waves in the heart from The Virtual Heart/ EM Cherry/ FH Fenton - and
Chemical materials and protocol provided by Mike Morris and the UCI Chemistry Outreach Program
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 "Seaweed" "Deeper Than The Ocean" "Ripple Effect"
Music also from Artlist "Children of Mystery"
Thumbnail by Ignat Berbeci

  • Inertial equilibrium.

    Robert QuinnRobert Quinn8 mínútum síðan
  • This is probably how Nikola Tesla would wanted to get his Tesla towers in sync. Earth being the wooden bar.

    SyphiriothSyphirioth16 mínútum síðan
  • In this age of high technology, physics still manages to mystify us. Nicola Tesla indeed was on to something when he cane up with the earthquake machine. 🕵

    A. AlzateA. Alzate21 mínútu síðan
  • I really liked this. But what I liked the most is that it took some simple and obvious things we take for granted, and offered some profound insight. Thank you.

    George PalGeorge Pal45 mínútum síðan
  • This is how democracy was born. The majority wins. The minority must follow afterward

    J DJ D45 mínútum síðan
  • It is waves. Waves always equalize.

    Víðarr KerrVíðarr Kerr46 mínútum síðan
  • Part of this phenomenon has to be caused by the human mind though, right? Not everything is as synchronized as it appears, and we humans like finding patterns in things that don't really have patterns

    GuruGuruKlukkustund síðan
  • It's because they're all part of the same single body that they eventually oscillate as a single body.

    Charles MacgilchristCharles MacgilchristKlukkustund síðan
  • Brilliant, brilliant! And a quality video! Keep it up my man!

    Tobe VincentTobe VincentKlukkustund síðan
  • seeing veritasium's HD face after that bald guy with the bad webcam is kind of terrifying

    vayhnvayhnKlukkustund síðan
  • Does increasing the number of metronomes increase the consistency of the timing?

    pleappleappleappleappleappleap2 klukkustundum síðan
  • Out of the way so amazed it's like a room full of girls when they start hanging out together they start synchronizing on their menstrual cycle that fun

    silk Altersilk Alter2 klukkustundum síðan
  • This channel makes the best videos ever!!!!

    SATERNSATERN2 klukkustundum síðan
  • nature's Natural Feedback loop seems to propagate throughout our reality created over our natural humanistic existence expressed by some who have been acute to the feedback as a religious phenomena throughout the world. Our natural pendulum of life and death is especially perceived at death of a human system while during our life time some-we are sensitive to the humanistic experience as a whole called a civilization... realized as a moral pendulum written through out written history... Peace and Love always

    Richard ShaneRichard Shane2 klukkustundum síðan
  • If there were 70 men marching, 60 of them fell and 20 of them were injured who were the extra 10 that were injured?

    BoatBoat2 klukkustundum síðan
  • My god... I love this channel

    Cliente PromedioCliente Promedio3 klukkustundum síðan
  • Explanation of why the one changes motion (after 5:44)is flawed.The arrows are drawn the wrong way. The TOTAL of the two that het in sync first will balance out with the counter motion of the platform, but that don't mean that the platform doesn't move. And the move of the platform is forced by the two that are synced already. Be cause of which it dominates the one that is still doing is own thing.

    Ary vanHarrickAry vanHarrick4 klukkustundum síðan
  • Synchronicity is interesting and there are more syncs... cause each spectrum(world) has an own much balance,as much the question is which balance we choose, which sync?Thatswhy parallel waves are important,we must choose our own balance then recognize the parallels and keeping the line...if we are in higher balance we learn but we get left behind or must try more times not to get left behind...if we are in lower balance we get not our results of our choosing which sync is parallel is very important...and not each sync is available everywhere...even in universe there are more balances...and there are more universes... basically we must find the parallel outside what we are already exactly inside... mostly people are choosing lower or upper nivou balance than themselves...but it's a good school in upper nivous to getting some knowledge or rolling in the deep to leaving the inner suffering behind...this channel has a good nivou.

    Vakond SimpleVakond Simple4 klukkustundum síðan
  • 2:16 the wrong acceleration on the pendulum is driving me crazy

    DorGreen1DorGreen15 klukkustundum síðan
  • Nature is actually shockingly orderly. It prefers it in fact. Its why we see it everywhere and why "random chance" cannot in any fathomable sense explain our very existence.

    Comrade EverclearComrade Everclear5 klukkustundum síðan
  • And as it is appointed unto men once to die, but after this the judgment: (Heb 9:27 KJV) |>~~~~~~

    The wordThe word5 klukkustundum síðan
  • hey man, i was thinking....if the synchronization works atleast with a solid connection(clocks kept on same surface or something like that) , wouldn't this solve the basic issue we had while we were trying to measure speed of light!!.....since the clocks were unable to synchronize then....we couldn't measure the speed of light in one way....but using these nomes....if we first set them up and let them synchronize over time (which they will eventually)....won't then will be able to measure speed of light in both(hence different) directions! possible or let me know please!

    anand wankhadeanand wankhade5 klukkustundum síðan
  • Is this what happens when you are at a red light and watch the turn signal of the car in front of you sync with your turn signal?

    beleafer22beleafer225 klukkustundum síðan
  • The Earth is flat.

    Zbyszek KopećZbyszek Kopeć5 klukkustundum síðan
  • Wow, so like, when you live in a fake country that only enables people to hate on each other, and outsource jobs, and covers everything in asphalt, grueling traffic, and remote strip malls w/junk food, then you will end up w/people walking in a sick, twisted, 'entitled' destructive, hurtful cadence. **So saying "Oh well, that's your choice, then" is a bunk term, no?**

    Sequential GeekSequential Geek6 klukkustundum síðan
  • We just think it's disorder because we're too small to see the whole thing.

    lennat24lennat246 klukkustundum síðan
  • no joke, this video gave me an idea for my phd ... see you at the nobel prize

    TrotrodorTrotrodor7 klukkustundum síðan
    • tell me your name i will wait for you to appear in the news :D

      Robert NeumannRobert Neumann2 klukkustundum síðan
  • "So you naturally expect universe to be "Messi" " --mybrain

    Burning ItBurning It7 klukkustundum síðan
  • Remember when you were in the school lunch room and everyone happened to finish a sentence at the same time, causing a weird silence?

    jovi_aljovi_al7 klukkustundum síðan
    • No.

      Víðarr KerrVíðarr Kerr50 mínútum síðan
  • 0:30 does this solve special cases of the N-body problem?

    No OneNo One8 klukkustundum síðan
  • I wonder how the metronomes would react if they were placed on a platform resting on steel balls. And then more when the metronomes are in a circle ...

    S WS W9 klukkustundum síðan
  • 2:20 I really thought it was the Minecraft music at first.

    Andrew GampalAndrew Gampal9 klukkustundum síðan
  • 1:15 good heavens! the army learned a lesson and nobody died? A Miracle!

    BoomchucksBoomchucks9 klukkustundum síðan
    • Well it WAS the british army.

      Sam ReddigSam Reddig57 mínútum síðan
  • You all understand the immune system perfectly well how to diminish as many people as you possibly can, thus to reduce their immunity to Cancers and all types of fatal diseases within the herd of The unwanted, useless eaters

    Dodd RougeauDodd Rougeau9 klukkustundum síðan
  • Everyone who take civil engineering understands the World is Flat. The building of Bridges railroad tracks, and canals, confirm this.

    Dodd RougeauDodd Rougeau10 klukkustundum síðan
  • I noticed synchronization with turn signals with cars at a turning lane any explanation to that???

    Miguel AguilarMiguel Aguilar10 klukkustundum síðan
  • Great video as usual! I'm from Hungary and we call that type of clapping "vastaps" seen from 9:40, in English that would be "iron clapping". Just a fun fact ;)

    Máté HorváthMáté Horváth10 klukkustundum síðan
  • The thing is energy distribution becomes equal

    Scare FlareScare Flare10 klukkustundum síðan
  • 15:01 Him: that's not a fart.... crap! ... 19:02 I have been sitting in my own poop to far to long now.

    No OneNo One10 klukkustundum síðan
    • Was thinking the same lol

      Morpheus848Morpheus8485 klukkustundum síðan
  • vsauce or this channel?

    미카엘커트미카엘커트10 klukkustundum síðan
  • We're with you all the way against Twitter bro.

    Herpa DerpHerpa Derp11 klukkustundum síðan
  • Question: do the slower ones catch up, or do the faster ones slow down? to which one do the others "fall in line" to? lets say you have 1=2bpm, 2=4bpm and 3=6bpm, which one would they sync up to?

    Jostein TJostein T11 klukkustundum síðan
  • Simple answer, God

    Qam001Qam00111 klukkustundum síðan
  • Not sure how true it is, but my friend once mentioned periods among group of girls tend to synchronize over time.

    KK BKK B12 klukkustundum síðan
  • Great Video Derek.

    KK BKK B12 klukkustundum síðan
  • People clapping probably doesn't count. Too much opportunity for minds to get involved. If their hearing weren't a factor, then a better argument could be made. Anyway, good video.

    Jesse GilbrideJesse Gilbride12 klukkustundum síðan
  • The firefly phenomenon reminds me of how people sync their breathing with other people

    ToolforOfficeToolforOffice13 klukkustundum síðan
  • 2:01 they just want to cross from other side of the bridge

    MasidMasid13 klukkustundum síðan
  • I and my ex talked about this. She said it's because of god's will or kind like that. I said science. Yeah, we broke up.

    Thai BinhThai Binh14 klukkustundum síðan
  • This is science

    arshlan vharshlan vh15 klukkustundum síðan
  • For that metronome experiment you said that it is regardless of number of metronomes. I mean that how many metronomes doesn't matter. But is it regardless of the size of platform too? I mean the relative size of metronome and platform?

    Prasad B RPrasad B R16 klukkustundum síðan
  • WOW

    Don CarmenDon Carmen16 klukkustundum síðan
  • fun with beer cans? I have a fun with 2 X 4s program. Hahaha.

    Don CarmenDon Carmen16 klukkustundum síðan
  • Your videos are really amaZingggg

    Harshan MajuHarshan Maju16 klukkustundum síðan
  • Damn, if you put several rocket engines together instead of big one, imagining a disaster will happen.

    AlexAlex16 klukkustundum síðan
  • Me, an Assassin's Creed enthusiast: How can it be a secret you just climb on top of a high building and press V... Then miss the haystack and fall to your death

    Nyan CatNyan Cat17 klukkustundum síðan
  • Hello Turing instabilities

    Chester LiwoszChester Liwosz17 klukkustundum síðan
  • 18:03 here's the answer

    NoName YesNameNoName YesName17 klukkustundum síðan
  • The people on the bridge are simply reacting to sway so that makes them all moving sync it's no secret

    Gabriel GrayGabriel Gray17 klukkustundum síðan
  • can we use the kuramoto model to calculate the one way speed of light?

    BP-Brain ProblemBP-Brain Problem19 klukkustundum síðan
  • I wish I was born smarter. 😔

    1joshjosh11joshjosh119 klukkustundum síðan
  • How the heart muscle works in spirals is amazingly beautiful to me.

    marblebluemarbleblue20 klukkustundum síðan
  • Who waits to get on a long line that’s wobbly like that? And you brits call us americans crazy.

    justdljustdl20 klukkustundum síðan
  • This went from neat physics phenomena to woowoo real fast.

    mynamewhatismynamewhatis20 klukkustundum síðan
  • We call nature disorder just because we dont understand how nature really works

    Saris WindsongSaris Windsong21 klukkustund síðan
  • Your entire channel is at jeopardy because Bill Gates is behind creating COVID-19 virus. It is a man-made virus and for somebody to predict that only a few years before it came out is too coincidental. And now ironically he is helping support in creating a vaccine. Follow the money!

    Jonny DJonny D21 klukkustund síðan
  • I don’t mean to sound like a know it all but other then the advanced mathematical equations which I won’t pretend to understand but some of these interactions seem to have be pretty obvious.

    Daniel MDaniel M21 klukkustund síðan
  • 07:07 In class this would be the exact moment when I stop understanding what the teacher is talking about

    Carlos E. Torres VinuezaCarlos E. Torres Vinueza21 klukkustund síðan
  • Acaso con las mentes de las personas no sucede lo mismo? Cuando la mayoría cree en algo terminan arrastrando al resto!!!!....como si entraran en sincronía

    Alfredo ToscanoAlfredo Toscano22 klukkustundum síðan
  • It’s a very interesting video.

    Ruben MorenoRuben Moreno22 klukkustundum síðan
  • Everyone who studies complex system should read about dialectal thinking, very helpful

    Nat HatNat Hat22 klukkustundum síðan
  • 👍🏽👍🏽

    Will CWill C22 klukkustundum síðan
  • Bru 2160p res

    DrawSketchGamingYTDrawSketchGamingYTDegi Síðan síðan
  • GOHOHO90

  • Noone: This guy: LonGAtoOD

    stinkostinkoDegi Síðan síðan
  • Y ¿Cómo se puede explicar que en las residencias estudiantiles de chicas, o en una casa donde viven varias mujeres, se suele ver que ellas sincronizan las menstuación? Aunque ellas lleguen en diferntes fechas, y con la menstruación en otro período, al poco tiempo entran en sincronía. A veces hay excepciones

    Oscar BERTOLAOscar BERTOLADegi Síðan síðan
  • And how can it be explained that in student residences for girls, or in a house where several women live, it is usually seen that they synchronize their periods? Although they arrive on different dates, and with menstruation in another period, soon after they come into sync

    Oscar BERTOLAOscar BERTOLADegi Síðan síðan
  • 12:40 cc: not facilitatory but "oscillatory"

    Yasin ÖzkanYasin ÖzkanDegi Síðan síðan
  • Can synchronisation can be used on emotions ? Since empathy is the reproduction of an emotion we percieve

    Fuck FuckFuck FuckDegi Síðan síðan
  • What would happen if all those random particles that pop in and out of our existence all popped into our existence at the same time? Would they throw the entire universe into chaos?

    Mizo MintMizo MintDegi Síðan síðan
    • Wasn't that the Big Bang?

      arty6164arty6164Degi Síðan síðan
  • This was a fantastic video. Really interesting content, interesing guest and excellent quality

    Louis HennLouis HennDegi Síðan síðan
  • My mans really said longitude with a hard g

    Jordan JacksonJordan JacksonDegi Síðan síðan
  • Does that mean we’re drifting away far into space?

    Ray Is BoredRay Is BoredDegi Síðan síðan
  • This is part of the secret to extremely high efficiency motors/generators.

    DubsporeDubsporeDegi Síðan síðan
  • Chaos is an illusion of the scale of order. There is only order that only seems like chaos.

    Teddicus BoozicusTeddicus BoozicusDegi Síðan síðan
  • this is a frequency entropy

    Marcin SkrobańskiMarcin SkrobańskiDegi Síðan síðan
  • I've been pondering the orbital resonance of Jupiter's Galilean moons for years in my head. Now I finally understand how and why. Thanks.

    Ole OlsonOle OlsonDegi Síðan síðan
  • Which one is first? And what general frequency would gather the rest?

    Caleb DelatorreCaleb DelatorreDegi Síðan síðan
  • To me, this was one of the best and most inspiring episodes of Veritasium. Great work, thanks!

    Slavi ShaSlavi ShaDegi Síðan síðan
  • 10:59 does that mean that eventually our earth will only show one side to the sun?

    Jake HaloJake HaloDegi Síðan síðan
  • Amazing video. However I feel the video missed a huge potential in relating to the final point about complex systems.

    Andreas PihlAndreas PihlDegi Síðan síðan
  • How can a bridge have a resonant frequency?

    N ZN ZDegi Síðan síðan
  • Put metrinoms in diffrent direcyions plz .we want to see

    Electro motive sparkElectro motive sparkDegi Síðan síðan
  • Amazing video.

    Daniel SeveroDaniel SeveroDegi Síðan síðan
  • so you can use synchronisation to mesure the speed of light (your previous vidéo)

    Créator 64Créator 64Degi Síðan síðan
  • "It was only a few decades ago that scientists started fleshing out a rigorous theory of synchronization." I don't believe that because it seems too easy. Framework of proof (for pendulums on a common movable platform, but this can easily be generalized): (1) Assuming there were 1 pendulum only, express the effect of the movement of the 1 pendulum on the movement of the platform. (2) Express effect of the movement of n asynchronous pendulums on the movement of the platform. (3) Express the effect of the movement of the platform on the movement of a pendulum. (4) From 2 and 3, generate a system of equations for the cases with 1 and 2 pendulums. (5) Solve for the equilibrium in a case with 1 and 2 pendulums, with arbitrary starting values. (6) Show that the equilibrium does not change if you add 1 pendulum, regardless of the current number of pendulums. Alternate proof framework: (1) Prove that regardless of current state after one period an apparatus with 2 pendulums is closer to synchronous equilibrium by more than some fraction of the present distance to the synchronous equilibrium. (2) Prove that for an arbitrary number of pendulums by induction. (3) Prove that the sequence of distance to synchronous equilibrium indexed by period asymptotes to the 0.

    Ashish BAshish BDegi Síðan síðan
  • Yet at a concert when people use lighters or flashlights to swing left and right with there arms, nobody ever gets in sync...

    BrechtBrechtDegi Síðan síðan
  • Does free will really exist?

    Hsiao LingHsiao LingDegi Síðan síðan
  • si con estos ejemplos enseñaran en el colegio todo seria distinto pero no lo hacen solo hacen ver todo lo aburrido q es la fisica

    CAROMECAROMEDegi Síðan síðan
  • Aristoteles says that to reach God there are 3 paths, beauty, justice and kindness ... Beauty = Harmony = Synchronization=Cosmos...

    IanIanDegi Síðan síðan