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. Mohammed Rayan Khan

    Mohammed Rayan Khan

    2 uur geleden

    According to this phenomena, if we place two watches nearby the second hand of the watch must synchronize to one another as time passes. Correct me if I am wrong!

  2. Han Doko

    Han Doko

    2 uur geleden

    after see u video hmm i thing falun gong its true.. every thing in universe its rotate...

  3. S. V. Pinto

    S. V. Pinto

    2 uur geleden

    Great video! Could you make a video of self-organization considering his similarity with the phenomena of the current video? (Sorry for my english :c)

  4. Johann Gambolputty

    Johann Gambolputty

    2 uur geleden

    It's already been said, but you've really upped the quality of your vids recently (and they weren't too shabby before)! Exquisite stuff

  5. Adrian Marta

    Adrian Marta

    3 uur geleden

    Because the universe has a Creator.

  6. Amaizing World

    Amaizing World

    4 uur geleden

    If anyone thinks nature tend to move towards chaos, doesnt knkw what they are talking about and probably failed physics.

  7. Adhanda


    4 uur geleden

    2nd law treats the universe as a closed system, which it is NOT.

  8. zijuiy wttuy

    zijuiy wttuy

    5 uur geleden

    This is the kind of breathing and colour of those who saw something beautiful

  9. HX3_EnFr Hdel

    HX3_EnFr Hdel

    5 uur geleden

    I became a lot smarter than I was before

  10. Nando Florestan

    Nando Florestan

    6 uur geleden

    Synchronized clapping in classical concerts is not an instance of the physical phenomenon, it is a matter of taste and expression of musical beings. It is voluntary, not emergent. It is rather likely to occur in concerts in Brazil and almost never happens in Poland. The person who put this in the video... has not been to many concerts. Clapping in phase means we want an encore. In Brazil and possibly elsewhere a pianist will give an encore immediately if the audience asks in this way. When I do want a bis, I listen to the clapping and find the pulse. It’s intentional.

  11. Fabian Van Der Elst

    Fabian Van Der Elst

    12 uur geleden

    Listen to Steve Reich's "Violin Phase" for an optimal soundtrack to this video :)

  12. Aaron Martinez

    Aaron Martinez

    12 uur geleden

    Dammit veritasium stop keeping me awake!

  13. Diletta Moscatelli

    Diletta Moscatelli

    12 uur geleden

    When I was young I often went to church and when we had to eat the host everybody walked in lines oscillating like penguins all at the same I understand why, that’s amazing

  14. Javier Torres

    Javier Torres

    13 uur geleden

    You idiots got the Moon thing wrong but, OK...

  15. ying17zi


    13 uur geleden

    Subscribed. Like the video and your voice! Thank you for making/creating this video!

  16. Digit Study Point

    Digit Study Point

    14 uur geleden


  17. Joel Oliver

    Joel Oliver

    14 uur geleden

    An easy way to get synchronization is to go”ooh oooohhhh oohhhh ooohhh oooooohhh” in a room full of guys

  18. Jared Croft

    Jared Croft

    16 uur geleden

    Narrator: to understand it, we have to go back 350 years. My stoned ass: Well let's go then.* smirks with a smile, leans back in chair and props foot on knee*

  19. Collin Smith

    Collin Smith

    16 uur geleden

    Great video! 👍

  20. Mange Chanagement

    Mange Chanagement

    17 uur geleden

    That metronome syncing was amazing. In saying that - is everyone getting an ad per minute or is it just me? Is google syncing our ads cos its driving me mad. Time to move all content onto TikTok Veritasium

  21. Willfrye1980


    17 uur geleden

    I have zero interest in this whatsoever. But I watched it all and loved every minute of it.

  22. Diego Fernandes

    Diego Fernandes

    17 uur geleden

    My brain!!! I LOVED THIS VIDEO!

  23. Shaunak Dhekane

    Shaunak Dhekane

    18 uur geleden

    Quick question, why did the pendulums sync out of phase but all the metronomes synced to the same phase?

  24. Big DogCountry

    Big DogCountry

    18 uur geleden

    ...periods in the amazon brigade

  25. Friday’s are cool

    Friday’s are cool

    19 uur geleden

    Almost as if it was designed...

  26. Pirom


    19 uur geleden

    7:30 Captain America and The Falcon first meeting 15:02 - happy 420

  27. N


    19 uur geleden

    Wait is this the same huygen who proposed why waves diffract through small gaps?

  28. Beobout6


    19 uur geleden

    I really don’t care how it works, I just love watching 100 metrothingys all clicking together. How soothing!

  29. C.T. E.

    C.T. E.

    20 uur geleden

    The last comment about understanding. If understanding a way to get a grasp on things like disease and everything that is earthly would be a great first achievement. Then they can move on to the spiritual, worm holes and time travel. See all the parallel universes and dimensions. Everything seen and unseen is vibrating at an unknown resonant frequency. Our eyes can only see the light of this plane (earthly plane) that is vibrating. If only the eyes of our soul could see 👀 the spiritual plane, while still alive.

  30. Christian Roi Cabel

    Christian Roi Cabel

    20 uur geleden

    When your heartbeat synchronized with someone you hug

  31. Alejo Steinman

    Alejo Steinman

    21 uur geleden

    Where there's universe there's order, and where there's order there's God.

  32. SurvivorCraft YT

    SurvivorCraft YT

    21 uur geleden

    3:54 that happened with the flashers of two cars

  33. Kevin Aldana

    Kevin Aldana

    22 uur geleden

    This remember me to find the mcm

  34. Aline Sanchez Ramirez Baruchi

    Aline Sanchez Ramirez Baruchi

    Dag geleden

    This is the kind of breathing and colour of those who saw something beautiful

  35. Aline Sanchez Ramirez Baruchi

    Aline Sanchez Ramirez Baruchi

    Dag geleden

    Love makes him more productive, I guess

  36. Sam Strohl

    Sam Strohl

    Dag geleden

    Damn, why doesn't this happen with blinkers when I'm driving

  37. balcomoz


    Dag geleden

    I've tried that but it doesn't work. And I've used high quality digital metronomes

  38. Kalo


    Dag geleden

    Was watch this on tik tk and accidentally refreshed, glad u found it in here, wasn't expecting it to be the same video tho. Yay

  39. Staarkalinou


    Dag geleden

    great as usual 👍

  40. Jukes McGee

    Jukes McGee

    Dag geleden

    I NEED to know the music for that intro. What beautiful ambience.

  41. IronPump89


    Dag geleden

    Thanks, bifurcations and limit cylce oscillations are amazing !

  42. mic jones

    mic jones

    Dag geleden

    What if they tuned the " guitar strings" of the bridge to a different octive or different key?

  43. fouoii gyhh

    fouoii gyhh

    Dag geleden

    so, similar to "when you stare into the abyss, the abyss stares back at you", "When you beat something into rhythm, that something also beats you into rhythm."

  44. Elif Göksu Algın

    Elif Göksu Algın

    Dag geleden

    does this mean all moons of all planets are eventually going to lock??

  45. Xeno The Strange

    Xeno The Strange

    Dag geleden

    Everyone here is secretly learning to code and they don't know it yet...

  46. Sergio B. Meza C.

    Sergio B. Meza C.

    Dag geleden

    Very, very interesting. In the video, people looks like penguins walking...

  47. FirstName LastName

    FirstName LastName

    Dag geleden

    Does the fact that planets circle around their sun more or less in same plane also have a synchronization explanation? Also, I would perhaps think this plane is more or less perpendicular to the rotation axis of the sun ...

  48. Soul


    Dag geleden

    I know how every polyrhythm eventually syncs up on one beat even with vastly different rhythms like 34:83 or 12:95, a similar principle here.

  49. Shamus Beaglehole

    Shamus Beaglehole

    Dag geleden

    Every prostitute should be forced to watch this video every day around 4pm.

  50. Shamus Beaglehole

    Shamus Beaglehole

    Dag geleden

    All people are horses.

  51. LUCIFER FPS - Fury

    LUCIFER FPS - Fury

    Dag geleden

    I saw this Nike red video. That dude does some crazy chemical experiments

  52. watching Kung Fu Panda 2

    watching Kung Fu Panda 2

    Dag geleden

    12:29 What instrument is that ?

  53. Memespeech


    Dag geleden

    disorder and chaos are subjective terms

  54. Joseph Ololade

    Joseph Ololade

    Dag geleden

    An intelligent designer made the universe Yahweh is his name

  55. Lenard


    Dag geleden

    9:53 synchronised clapping after chaos clapping is a cultural thing in Hungary, it may be due to what you said, but people do it consciously as it means ‘again’-for the performers to come out and bow etc

    • Tiago Vigil

      Tiago Vigil

      7 uur geleden

      It’s not just in Hungary, here in Brazil it’s exactly the same

  56. Haͥppͣyͫ UK ๖ۣۜƤaͥτrͣiͫoτ

    Haͥppͣyͫ UK ๖ۣۜƤaͥτrͣiͫoτ

    Dag geleden

    The law of entropy is not really about order in the sense of organisation and synchronicity. It's actually more about one very fundamental concept. For any process, the amount of energy available for work is diminished. As long as there is a difference of energy levels, there is a potential for a flow of energy and therefore a potential for work to be done. If all the energy in the universe was evenly distributed, things would be very orderly and synchronised, but the universe would be stone cold dead.

  57. Rajesh Roger

    Rajesh Roger

    Dag geleden

    scapegoat central, no need for sorries or thank you. I don't care

  58. Pranshu Aggarwal

    Pranshu Aggarwal

    Dag geleden

    What was the last bit "How can you figure out properties of the whole given the properties of parts?"

  59. yaogog


    Dag geleden

    best friend women can synchronise their periods

  60. Abner Jr. Paredes

    Abner Jr. Paredes

    Dag geleden

    Quality content.. Love it

  61. Mario Velez

    Mario Velez

    Dag geleden

    This has to be one of my favorite videos ever on NLcameras

  62. E B

    E B

    Dag geleden

    The millennium bridge wasn't swaying because the people were walking in step, the people were walking in step in response to the lateral sway of the bridge. Their walking in step then caused it to sway ever more.

    • Captain Aryán

      Captain Aryán

      Dag geleden

      Then how were they supposed to 'walk' ?

  63. Subhranil Majumder

    Subhranil Majumder

    Dag geleden

    @Prof. Steven Strogatz and @Veritasium, I believe the reason why it is hard to figure out the properties of whole given the properties of parts is because, of the level of mental activity human mind can reach in normal state. Due to the limited amount of energy our body can process, it becomes very hard to understand the bigger picture, which is relative in different people's case.

  64. Tory Slusher

    Tory Slusher

    Dag geleden

    Coupled oscillation via vibrational transference, got it.

  65. NEWS


    Dag geleden

    Well I am not auto synchronised to my missus, maybe I am a freak of nature?

  66. Paradox G

    Paradox G

    Dag geleden

    Chaos and Order are not different to Nature.... They are 2 sides of the same coin.

  67. Adrian Epic

    Adrian Epic

    Dag geleden

    Finally, something to adequately explain Aphex Twin's video, windowlicker. Thank you for your service, good sir.

  68. Laksyians sTuDy TiMeS

    Laksyians sTuDy TiMeS

    Dag geleden

    Actually at all you challenge the physics.

  69. Kelley McBride

    Kelley McBride

    Dag geleden

    Super cool video thanks!

  70. libertyn jeopardy

    libertyn jeopardy

    Dag geleden

    Obviously there is a God, unfortunately this fact is not obvious to many. Giving credit to "Nature" is naive and illogical.



    Dag geleden

    This can apply to all life, I’ll give you an example I was at a concert and somebody started a fight and somebody else in the crowd got angry and they started a fight, at the end of the concert it turned into a riot and everyone was starting to fight. This theory applies to everyone and that GOD is real, And synchronization is the key to the multi-verse.

  72. Bellhop Walrus

    Bellhop Walrus

    Dag geleden

    I notice this happening in a line of cars, with their turn signals on. They'll sync up for a while, then go out of phase again, creating interesting rhyrmic patterns. I am very easily entertained.

  73. Muhammed Shahbaz Sadiq

    Muhammed Shahbaz Sadiq

    Dag geleden

    Very informative

  74. miles andress

    miles andress

    Dag geleden

    Hey..babies in the nursery cry and dogs in a kennel bark out of sync...

  75. miles andress

    miles andress

    Dag geleden

    So...if one clock out of would anyone know the correct time? He should have had a third clock as a tie breaker..or..better yet..a fourth clock for confirmation🤣

  76. Carlo S

    Carlo S

    Dag geleden

    Your opinion on nature being chaotic and disordered is a subjective point of view. These smaller chaotic occurrences are part of a bigger order.

  77. Leslie Henderson

    Leslie Henderson

    Dag geleden

    This is interesting, because when a group of women get together, like in a roommate kinda situation, then tend to get their periods at the same time!

    • Kim B

      Kim B

      54 minuten geleden

      Not true

    • Counter Balance

      Counter Balance

      12 uur geleden

      I've had this situation at my former job.

  78. Scott


    Dag geleden

    So everything has a frequency including us humans. Everything living and inanimate is effected by frequency, however living things have a higher frequency than inanimate objects, and some humans have a higher frequency than others.

  79. iBoolGuy


    Dag geleden

    that was 20 minutes.....? i thought it was 6 yo

  80. M Al

    M Al

    Dag geleden

    Gravity 👈 morons🤓

  81. NO


    Dag geleden

    1 Hz seems worse than 2 Hz would be, but maybe I'm just not a civil engineer

  82. iBoolGuy


    Dag geleden

    “Entropy is the natural order of the universe.”

  83. Grim Grinn

    Grim Grinn

    Dag geleden

    The man at the end sounded like David Bohm :)

  84. WJ Stulp

    WJ Stulp

    Dag geleden

    yet another reason to realize God controls the entire universe.

  85. As2000 the stop motioner

    As2000 the stop motioner

    2 dagen geleden

    Its same with my walk i literally Almost always walk the same speed in steps as the person Im walking with

  86. Eric Singley

    Eric Singley

    2 dagen geleden

    Even more interesting is the oscillation in American politics...

  87. VenB


    2 dagen geleden

    Hehe penguins

  88. David Perkins

    David Perkins

    2 dagen geleden

    Many years ago myth busters used a linear actuator on an old disused bridge, the movement was maybe 4 to 6 inches but after a while the resonance created a measurable sway within the bridge.

  89. Guilherme Santana

    Guilherme Santana

    2 dagen geleden

    It was great to learn more about synchronization. It really helped me strengthening up my faith a little bit more. It reminded me of a God that puts order in chaos as Genesis 1-2 shows us. A God who holds all the wisdom and the secrets of cosmos (Job 38). A God who loves me and you with sacrificial love (John 3:16) and who will eventually put everything in place again (Revelation 22)

  90. Muhammad Omer

    Muhammad Omer

    2 dagen geleden

    maybe fireflies were celebrating saying hip hip hurraaaaaaaaayyy

  91. Dub Dado

    Dub Dado

    2 dagen geleden


  92. Kenneth


    2 dagen geleden

    This is very interesting. Great video. But does this also applies to lights? What if we had blinking multiple blinking lights? Does this apply too?

  93. Art Mezins

    Art Mezins

    2 dagen geleden

    Two pedantic notes from a retired electrical engineer: [1] The bridge sync is like any system that has a resonance (and there may be more than one resonant frequency in a system). Electrical engineers routines apply "white noise" (randomness) to a resonant system to determine its resonant frequency(s). [2] When two timing sources are "close" in frequency, then something called a "beat" frequency results from the difference between the two frequencies. For example, if one is 0.1% different from the other (i.e. "close"), then there should be one "beat" every 1000 cycles. If 0.01% apart, then 10000, etc. Now if that frequency is from something slow, like a metronome or pendulum, say 1/sec, then you would have to wait 10000 sec (about 2.8 hours) before they sync, but only "momentarily", before they start to drift away. Then there's the "anti-beat" when they're motions are synced oppositely, at half the time, but repeats at the same frequency of once/2.8 hr. Now that also assumes that these are perfect timing systems with no animalities to throw a stick into the spokes, otherwise, more chaos ensues. Now multiply that to say 50 metronomes. The math gets more sticky, like the complexities of the 2-body vs. 3-body (or more) celestial orbital equations. But then computers were made to simulate is stuff so we humans can stay (mostly) sane. And this shouldn't detract from any enjoyment of the simplicity of the world around us, just know that it's there and the engineers (mostly) know how to address any issues that come along (albeit, after the fact sometimes).

  94. Mujahid Faruq

    Mujahid Faruq

    2 dagen geleden

    I appreciate over exaggerated examples, thank you

  95. David Milhous Carter

    David Milhous Carter

    2 dagen geleden

    14:12 Golden Ratio.

  96. amine mk

    amine mk

    2 dagen geleden

    This universe and this life is not random, but meticulously designed by a higher thinker.

  97. Its Mango

    Its Mango

    2 dagen geleden

    1:56 "They aren't part of an army" That's what you think

  98. Dolzinfant


    2 dagen geleden

    17:24 shouldn't it say swayed instead of suede in the subtitles? Fabulous video all the same...

  99. Will Pablo Brazão Barletta

    Will Pablo Brazão Barletta

    2 dagen geleden

    The unstable base is the answer.