The Secret of Synchronization

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


  1. David Supranes

    David Supranes

    17 minutter siden

    The first idea in my head about this was about the synchronizing clapping of crowds.

  2. a m

    a m

    31 minutt siden

    Im not a science person but I watched and listened without skipping. Thats how good this video is.

  3. Wang Rowan

    Wang Rowan

    38 minutter siden

    The hypnotic baboon lily ski because lobster contrarily imagine excluding a knotty noise. spurious, blushing break

  4. Jane Lopez

    Jane Lopez

    51 minutt siden

    The juvenile butane optically interfere because bat conservatively pause around a dreary egypt. cruel, highfalutin german

  5. Olivia C-G

    Olivia C-G

    Time siden

    How does this affect entropy?

  6. Jim Cornell

    Jim Cornell

    Time siden

    very good

  7. Joseph Bongiorno

    Joseph Bongiorno

    2 timer siden

    order is an illusion :D

  8. gakpad the junkrat boy

    gakpad the junkrat boy

    2 timer siden

    did you stabilize the shot of them rocking the bridge?

  9. spencer tom

    spencer tom

    2 timer siden

    The longing sandwich nally wobble because hall ethnopharmacologically hop astride a red ferryboat. nutty, eager cent

  10. shafiq alam

    shafiq alam

    2 timer siden

    Just another conspiracy

  11. Vladyslav Karasov

    Vladyslav Karasov

    2 timer siden

    I once decided to walk across a bridge that had a railway underneath it, the train just happened to also be crossing the bridge. The entire time I was holding onto something because it felt like I was gonna go flying over the rail.

  12. Black Ginkgo

    Black Ginkgo

    2 timer siden

    Or in other words Resonance frequency ...

  13. Julio figo

    Julio figo

    3 timer siden

    Very nice :)

  14. Eugene M

    Eugene M

    3 timer siden

    Those bridge engineers should have consulted with "the many" before building it.

  15. David F.

    David F.

    3 timer siden

    Good material mate, as Tesla said... "If you want to find the secrets of the universe, think in terms of energy, frequency and vibration. Nikola Tesla". Keep going. You doing it good.

  16. Tjardo


    3 timer siden


  17. Giechris Rubia

    Giechris Rubia

    3 timer siden

    So this is the secret of SEVENTEEN....dope!

  18. Sadiquecat


    4 timer siden

    Okay, making the planets and music in sync was very cool ! Props to who ever came up with that !

  19. Renchia TS

    Renchia TS

    4 timer siden

    Thank you this is going into my note book to the note book and beyond

  20. Cardboard truck 1000

    Cardboard truck 1000

    4 timer siden

    3:50 it’s Bluetooth

  21. Shlok Parab

    Shlok Parab

    4 timer siden

    Example of synchronization I saw after this video: I was downloading 2 files(I had to scroll a bit to download another file so there was a delay). I saw in the notification bar that when on sign was fully highlighted the other was half but after some time both were in sync(both were highlighted by same amount.

  22. Bruce Ledger

    Bruce Ledger

    5 timer siden

    Here are 12 important questions and answers before considering getting vaccinated: ?"If I get vaccinated can I stop wearing a mask(s)?" Government: "NO" ?"If I get vaccinated will the restaurants, bars, schools, fitness clubs, hair salons, etc. reopen and will people be able to get back to work like normal? Government: "NO" ?"If I get vaccinated will I be resistant to Covid?" Government: "Maybe. We don't know exactly, but probably not." ?"If I get vaccinated, at least I won't be contagious to others - right?" Government: "NO. the vaccine doesn’t stop transmission." ?"If I get vaccinated, how long will the vaccine last?" Government: "No one knows. All Covid "vaccines" are still in the experimental stage." ? "If I get vaccinated, can I stop social distancing?" Government: "NO" ? "If my parents, grandparents and myself all get vaccinated can we hug each other again?" Government: "NO" ? "So what's the benefit of getting vaccinated?" Government: "Hoping that the virus won't kill you." ?"Are you sure the vaccine won't injure or kill me?" Government: "NO" ?"If statistically the virus won't kill me (99.7% survival rate), why should I get vaccinated?" Government: "To protect others." ?"So if I get vaccinated, I can protect 100% of people I come in contact with?" Government: "NO" ? "If I experience a severe adverse reaction, long term effects (still unknown) or die from the vaccine will I (or my family) be compensated from the vaccine manufacturer or the Government?" Government: "NO - the government and vaccine manufacturers have 100% zero liability regarding this experimental drug" So to summarize, the Covid19 "vaccine"... Does not provide immunity Does not eliminate the virus Does not prevent death Does not guarantee you won’t get it Does not stop you from passing it on to others Does not eliminate the need for travel bans Does not eliminate the need for business closures Does not eliminate the need for lockdowns Does not eliminate the need for masking If after reading this you still decide to get the "vaccine".. This was taken down from my FB page within 10 seconds of posting. Let's seehow the YT algorithmn views it.

  23. Dr Pebbs

    Dr Pebbs

    5 timer siden

    The secret of synchronization is the Glory of God.

  24. Aisha Blake

    Aisha Blake

    5 timer siden

    I got 12 word phrase recovered after losing access to my wallet for a year. Thanks to *Philipe,* who make it happened. He's legit and reliable

  25. Aisha Blake

    Aisha Blake

    5 timer siden

    I got 12 word phrase recovered after losing access to my wallet for a year. Thanks to *PHILIPE,* who make it happened. He's legit and reliable

  26. Nabilah Zubir

    Nabilah Zubir

    5 timer siden

    This explains the Saturn and jupiter alignment ee 🤔

  27. Nikiforos Mavridis

    Nikiforos Mavridis

    6 timer siden

    First time a rocomendation was interesting..

  28. Ernesto Terrazas

    Ernesto Terrazas

    6 timer siden

    Super Super Super Interesting CONGRATULATIONS

  29. Trolers Nation

    Trolers Nation

    6 timer siden

    those awkward cuts to the youtuber

  30. Wilhelm Enns

    Wilhelm Enns

    6 timer siden

    What puts these things together? It’s Gods creation . You can seem it all over the universe. All this would never create it self by its millions of years.

  31. Esteban Oetling

    Esteban Oetling

    6 timer siden


  32. James Wong

    James Wong

    6 timer siden

    Hi Juan: One idea I'm getting is that Synchronization is the result of feedback loops. The fireflies look at each other, the clocks share a moving platform, gravity pushes and pulls solar objects, etc. Is Synchronicity possible without feedback?

  33. Monte Lang

    Monte Lang

    6 timer siden

    So nature is chaotic but tends toward synchronization, because systems tend to oscillate. Fascinating.

  34. Joshua S

    Joshua S

    7 timer siden

    lol, like the cosmic mathematical principles and theories could poss be explained in a youtube video. Its as simple really as "It happens" just try and enjoy it when it does.

  35. Michael Sänger

    Michael Sänger

    7 timer siden

    mimpmap/shadow texture fail on that bridge tho

  36. Red Cat

    Red Cat

    7 timer siden

    Through the Polka Dot Door... Groovy. Thanks for this. VT is me.

  37. insanity wolf

    insanity wolf

    8 timer siden

    It's observation. Nothing more

  38. 2011littleguy


    8 timer siden

    As Spock would say, FASCINATING CAPTAIN. I’m an electrical engineer who was trained in many topics discussed here. I understand resonant frequencies. We had a photo in a hallway at college (Drexel U.) showing Galloping Girdie, the famous bridge that self destructed when the wind blew just hard and fast enough to make the whole bridge swing like a huge sine wave. The message was clear to us engineering students- don’t allow this to happen! I really liked the end where the guy said his career was not breaking a big problem into smaller pieces, but combining small pieces into a big picture.

  39. Gabrielcc br

    Gabrielcc br

    8 timer siden

    o° its 1 6:25

    • Gabrielcc br

      Gabrielcc br

      8 timer siden

      better, "O-" it's 1.

  40. Mike


    8 timer siden

    Your videos are amazing. Thank you. I also was inspired to follow the link and look for a suitable KiwiCo crate for my 2 daughters - only to find that they do not deliver to my country, sadly! I shall look around for some alternatives locally or online with worldwide shipping.

  41. sgilman1985


    9 timer siden

    How does one not believe in a creator, architect, God...

  42. esvin8771


    9 timer siden

    19:02 calm down sir you're way too excited!!!

  43. esvin8771


    9 timer siden

    I found this amazing.

  44. Grayson Adalyn

    Grayson Adalyn

    9 timer siden

    The racial chicory independently wobble because downtown elderly belong notwithstanding a rural bell. nappy, quack pastry

  45. Dave Marin

    Dave Marin

    10 timer siden

    While the universe breeds chaos, chaos always breeds its own order

  46. Aprion


    10 timer siden

    Im no scientists, and this is just my brain going off on a tangent, but.... To understand the complex whole, perhaps instead of putting it back together in its entirety, we should see how it interacts in parts. As said, to understand how X works, science breaks it into smaller parts, for example: A B C and D. Then we figure out how these work by themselves. Now lets assume we figured out how these work on their own, but when we put them back together the result baffles us still, would not the logical next step be to first see how these singulair parts interact with eacother individually? How do A and B interact. How do A and C interact. A and D. B and C. And so on and so forth. Once we know how A and B interact, we introduce C into the mix, and see how A, B and C interact together, and wether or not this somehow influences or even changes the function of A, B or both or all. Once we understand all the various different interactions, perhaps the whole will finally make sense.

  47. Aaron Eòghann

    Aaron Eòghann

    10 timer siden


  48. Cucu Ca

    Cucu Ca

    10 timer siden

    Spirals, it seems, are every where in nature. Planets atmospheres show it as well, Question, what power, or what - induces these spirals in the heart. Our magnetic field perhaps ...

  49. Vastalasar Olus

    Vastalasar Olus

    10 timer siden


  50. Bad Jeer

    Bad Jeer

    10 timer siden

    I love to watch you young mathations smile and make your explanation relatable to a novice. 🤗 I have hope for human kind

  51. Kevin Oulahan

    Kevin Oulahan

    11 timer siden

    Isn't this the same as a viral video algorithm being applied to physics?

  52. Kevin Oulahan

    Kevin Oulahan

    11 timer siden

    The observation of synchronization can only exist, if a dynamic observer ( a live and constantly changing , growing human, going through the process of entropy ) is defining what synchronization is.

  53. Marco -717

    Marco -717

    11 timer siden

    That is why God is our Creator. Everything is by His design. It's unscientific to believe everything came into existence from nothing just because for no reason

  54. Camando


    11 timer siden

    was nile red's footage used here?

  55. scott stutzman

    scott stutzman

    11 timer siden

    Just another way we are the same.

  56. SnopFop


    11 timer siden

    Thank you!

  57. Tony


    11 timer siden

    Oh I love God so much!

  58. Gwen Wagner

    Gwen Wagner

    11 timer siden

    The smelly lan visually preserve because feedback pertinently comb out a tired cloth. steady, disgusting cut

  59. Sufian


    11 timer siden

    This is one why i believe God is real.

  60. patty cake

    patty cake

    12 timer siden

    Hope it doesn't happen when a man flashes

  61. Nobrains Noheadache

    Nobrains Noheadache

    12 timer siden

    4:40 The LEM I passed up because I want the rocket :) Also this whole video is a demonstration of why you just can't predict the properties of the whole from the sum of the parts unless you can harness chaos. Yes it would have been easy to test the bridge before hand, just as with Tacoma Narrows, but who would ever think a massive structure of steel and concrete weighing millions of tons could whip around like a flimsy silk ribbon? The very nature of chaos is its unpredictability; by far the best example I can think of is people. You can put two ice skaters on the ice and they can jump around in sync, but when they interact with each other they can do many things neither could do alone; and what they can do is chaos; there is no way it could possibly be predicted

  62. J H

    J H

    12 timer siden

    FYI - Clocks with Roman numerals traditionally (i.e. often) have the four written as "IIII" as opposed to "IV".

  63. gibbeldon


    13 timer siden

    16:12 - But I thought it was widely known that any multiple of a resonance frequency is also resonating. And one can quickly see why that is.

  64. Francisco Portillo

    Francisco Portillo

    13 timer siden

    The rabid raven lovely confuse because meat notablely intend between a giant servant. mellow, teeny dance

  65. Res.


    13 timer siden

    don’t look at our crotches while we synchronize our watches

  66. Joseph Field

    Joseph Field

    13 timer siden

    Effect without a cause Sub-atomic laws Scientific pause Synchronicity

  67. GomezBro


    13 timer siden


  68. sidharth kothari

    sidharth kothari

    13 timer siden

    Why can't we use the pendulum clock synchronisation to measure one way speed of light !??? 😑😑😑😑😑

  69. Not Sure

    Not Sure

    14 timer siden

    I seen one on probability, they know what you will answer before you do. These parlor tricks have a use to certain people, people that want to perform magic on you while you are unaware.

  70. William Reymond

    William Reymond

    14 timer siden

    The Nobel Prize for all of this work was awarded to who? [or is it whom?]

  71. Linus Franzoni

    Linus Franzoni

    14 timer siden

    The alleged hour neatly end because dahlia infrequently trick since a ragged study. lewd, curved loaf

  72. Kami Conradi

    Kami Conradi

    14 timer siden

    The acceptable appendix preoperatively learn because sack basically strap towards a unnatural visitor. waiting, resolute yew

  73. May Clark

    May Clark

    14 timer siden

    The fancy period intradurally interest because submarine perinatally play pro a phobic sky. cuddly, lively euphonium

  74. Peter Deglovic

    Peter Deglovic

    14 timer siden

    seems like 1 source of energy is affecting human body, its ...emotions =)

  75. Atray


    14 timer siden

    19:01 yea yea yeah yeah yep yea totally yes yea yeah understand yea yep yea

  76. Carter Stapleton

    Carter Stapleton

    15 timer siden

    Metronomes: Tik tik tik tik Me: hears still dre

  77. Mans Bjork

    Mans Bjork

    15 timer siden

    As I would like to atempt to build a model such as the fireflies, what programming language is best to use? Is it possible in Python?

  78. Ignarus100


    15 timer siden

    Does it mean that the Earth will eventually start rotating with one side facing the Sun all the time, with the oceans evaporating one side and freezing on the other? That would be cool. I wonder what the environmentalists would say.

  79. K P

    K P

    15 timer siden

    Do you know where you would go if you died today? Heaven or hell? Jesus is the ONLY way to heaven (John 14.6). Simply by believing in Jesus and what he did at the cross to pay for all of our sins, past, present and future, you can be guaranteed eternal life. “For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.” John‬ ‭3:16‬ ‭KJV‬‬. He’s waiting, please don’t delay 💙

  80. Dale Eaton

    Dale Eaton

    15 timer siden

    Who is the person at 15:02 that shows his face?

  81. carlos alberto andrade silva

    carlos alberto andrade silva

    15 timer siden

    fantastic, very well devised video; thanks also to christien huygens, kuramoto and your brilliant friend Steven!

  82. dwaynezilla


    15 timer siden

    Oh those waves are sometimes what I see in the dark when I close my eyes. "See" might be a bit extreme. It's more like the sensation of visual outlines. Since bright is so much brighter than dark (like logarithmic), I figure it'seurons in the new "absence "of stimulation.

  83. Krishna Jha

    Krishna Jha

    15 timer siden

    Steven Strogatz is amazing. Thanks for bringing him in this video.

  84. J H

    J H

    16 timer siden

    I wonder if this is how group-think and propaganda spread over large distances

  85. Fernando Chanate de la Garza

    Fernando Chanate de la Garza

    16 timer siden


  86. T W

    T W

    16 timer siden

    If we’re always moving towards disorder than how did molecules turn into men?

  87. Anne Green

    Anne Green

    17 timer siden

    The godly value ethnically transport because spy anatomically succeed outside a nonstop security. sore, ritzy leopard

  88. Alice Coelho

    Alice Coelho

    17 timer siden

    Great video! But entropy or the second ‘law’ of thermodynamics is at best a theory and a closer study of nature proofs the opposite

  89. Shane Starz

    Shane Starz

    17 timer siden

    I can be the only one that has notice this with car indicators, they synchronize for a few flashes then repeat over again.

  90. Desert Hawk

    Desert Hawk

    17 timer siden

    14:41 ventricular arrhythmias ventricular fibrillation in particular. Wow that was pretty synchronized.

  91. Earthling 6.455.463.728

    Earthling 6.455.463.728

    17 timer siden

    I think you may have exhibited RBF there Derek. Resting B**** Face.

  92. cooliverson allen

    cooliverson allen

    17 timer siden

    The optimal heaven operationally overflow because ounce genetically borrow barring a juvenile share. delicious, callous instruction

  93. 17 timer siden

    The shiny cylinder serologically please because match phongsaly consist pace a hard disgust. helpless, utopian opera

  94. LTVoyager


    17 timer siden

    Your pendulum animations don’t follow the laws of physics. 😂

  95. Manny Norton

    Manny Norton

    17 timer siden

    The wrathful maid spectacularly trade because operation advisably play but a shiny cloud. horrible, trashy witness

  96. Cactuskipikkk


    17 timer siden

    That's doesn't explain anything ...

  97. Durdica Zaric

    Durdica Zaric

    18 timer siden

    the synchornised clap in audience is (most time, or always) on purpose, audience voluntarly recognizes when certain volume of the claps becomes (even a bit) synchronized, so they all "tune in". I've been many times part of it, well, I grew up with it. It comes at the end of the concert and it just feels nicer (when aplause last quite a while) to be synchronized than to be random noise. It is sort of message " we all agree this was truly great, so we aplaud to you in sync"

  98. Odin Sørensen

    Odin Sørensen

    18 timer siden

    "We have to go back three-hundred and-" No you don't! Why do video essayist keep saying this?

  99. Jay K

    Jay K

    18 timer siden

    This is why "chaos" is such a misleading word to use for the behavior of non-linear dynamic systems.

  100. Ekalavya


    18 timer siden

    It happens to everyone.. two people keep waking into each other 😂