The Secret of Synchronization

68 471 Shikime 7 mln

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
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
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. Matthew Palomino
    Matthew Palomino
    2 orë më parë

    growing up I had a lot of guitars and I always loved playing the right note on one guitar that would make every guitar in my room start playing.

  2. Mark B
    Mark B
    3 orë më parë

    Fascinating , I used to enjoy shifting without a clutch in my 59 Chevy Apache. Later in life finding the syncro in life itself.

  3. Adam Hessenflow
    Adam Hessenflow
    6 orë më parë

    1:50 zombies that's why.

  4. Henny Yang
    Henny Yang
    8 orë më parë

    The late hope adversely double because mice basically whip without a lethal lily. abiding, silly message

  5. D Solis
    D Solis
    10 orë më parë

    Every time I go to a concert I go y a higher point to see the people… is funny how they oscillate and when somebody pushes how the wave spreads on the particles

  6. Michael Thomas
    Michael Thomas
    11 orë më parë

    Watchin 2160p

  7. CJ Cheifer
    CJ Cheifer
    13 orë më parë

    On the bridge, they should've all squeezed in the middle and walked sideways. Problem solved.

  8. dopiaza2006
    13 orë më parë

    The movement of those animated pendulums is very annoying. Not natural at all.

  9. nicos goulielmos
    nicos goulielmos
    13 orë më parë

    Amazing video, extremely good presentation of very complex subject.Thanks

  10. i love waflz
    i love waflz
    17 orë më parë

    Pendulum best deck

  11. Nicool Man
    Nicool Man
    17 orë më parë

    Ooooh that's where the Nilered profile picture came from

  12. Justin Davis
    Justin Davis
    22 orë më parë

    The music playing with Jupiter's orbits by way of polymeter as a subtle bed over the explanation was just brilliant

  13. Kurt Cunningham
    Kurt Cunningham
    Ditë më parë

    The an,,swer, to your question is consiousness

  14. Didier Loiseau
    Didier Loiseau
    Ditë më parë

    I always love to control the synchronization of a group of people clapping, it’s not very hard to trigger it (maybe with the help of a friend or two) and to break it.

  15. Kolvorok
    Ditë më parë

    Somebody has read a certain mathematician's book ;-)

  16. Sira Vista
    Sira Vista
    Ditë më parë

    Another amazing jaw dropping video.

  17. fvirk
    Ditë më parë

    I'm a Graphic Designer. I have no relation with this knowledge. But it is very interesting. I subscribed. Keep it up.

  18. jacob yeager
    jacob yeager
    Ditë më parë

    Wait.. is Ve atomocal number... 42.0?? Omg

  19. Louis Markosian
    Louis Markosian
    Ditë më parë

    Wouldn’t the fire fly analogy be better suited towards the law of large numbers?

  20. Rob P.
    Rob P.
    Ditë më parë

    This was your best video so far ....

  21. 3ric Car
    3ric Car
    2 ditë më parë

    is this why female minstrel cycles sync?

  22. Carlos Silva
    Carlos Silva
    2 ditë më parë

    hummm Can we have synchronization in ultrasonic waves? If we have 4 sensors in the car, will the waves synchronize and be a source of error?

  23. Nilson G Silva
    Nilson G Silva
    2 ditë më parë

    Why do Veritassium has a mass number equals 42.0 and Atomic Number equals i?

  24. Ilgar Roshen
    Ilgar Roshen
    2 ditë më parë

    20:26 You are a great father

  25. Piper Mahon
    Piper Mahon
    2 ditë më parë

    nile red

  26. eyewazear
    2 ditë më parë

    46 and 2 is a song about synchronization

  27. Tanner W
    Tanner W
    2 ditë më parë

    3:33 this is very disturbing looking

  28. Devin Grba
    Devin Grba
    2 ditë më parë

    spiral out keep going spiral out keep going spiral out keep going spiral out keep going

  29. Kataka Zikato Tekikazi
    Kataka Zikato Tekikazi
    2 ditë më parë

    Is not even Synchronizing, because Synchronization is one will remain constant and the other will adjust to it. From what i see, All things are trying to adjust to each other and it is called neutralization. But i cant deny the video it self was Amazing. Beware of Vertical Paradox.

  30. Foster Hellendoorn
    Foster Hellendoorn
    3 ditë më parë

    It takes a dutchman to figure things

  31. Berserk 007
    Berserk 007
    3 ditë më parë

    what's the song at 15:30 ?

  32. Zizi Roberts
    Zizi Roberts
    3 ditë më parë

    The fireflies flash together in Tennessee in the Great Smokey Mountains National Park. I took my daughter to see them about 17 years ago. Awesome. ❤️

  33. hiPsDonLiE
    3 ditë më parë

    ok. i was also hoping for more philosophical and human and metaphysical side of synchronization....the feeling of "everything falling in place"....thats synchronization too and much more important to be analyzed than for the inanimate one which is easy.

  34. Switzel
    3 ditë më parë

    Yes this is definitely more important than homework.

  35. tttm99
    4 ditë më parë

    How did anyone think putting a foot down as was half step. Just because the cycle was half through doesn't mean the imparted energy was only forwards or backwards or in one way. It makes me wonder how much science needs retrospective peer review... But i shouldn't be surprised of course, because until things break who would pay for the research. The potential volume and magnitude of errors in thinking and subtle misunderstandings lurking beneath what most put their faith in without question - documented scientific discovery - is truly sobering.

  36. Горькие Усы
    Горькие Усы
    4 ditë më parë

    It looks like scientists need more dialectical materialism to understand the totality better.

  37. Blu Berry
    Blu Berry
    4 ditë më parë

    How does this affect us humans ? like..our brains...the collective conscious ?

  38. Ипполит Матвеевич
    Ипполит Матвеевич
    4 ditë më parë

    So what's the secret of synchronization?

  39. Bafelmauk
    4 ditë më parë

    how precise is 2 pendulum clock Synchronization ? do they sync up perfectly ?

  40. Вадим Владимирович Тимофеев
    Вадим Владимирович Тимофеев
    4 ditë më parë

    I hate the frog LYAGULYALYULIN its impossible

  41. Troy Ward Jr
    Troy Ward Jr
    4 ditë më parë

    It is the way God made it. Nature doesnt use anything it is all God.

  42. Cool Legend
    Cool Legend
    4 ditë më parë

    nile red and veritasium are just amazing youtubers

  43. Rojar Jonez
    Rojar Jonez
    4 ditë më parë

    Strong evidence for a universal creator. Clearly an intelligent design.

  44. Darrell Border
    Darrell Border
    5 ditë më parë

    Some guy named Joshua in history did this and took down the grand city walls of Jericho. Just walking, huh?

  45. I HaveNoGunGame
    I HaveNoGunGame
    5 ditë më parë

    This video makes perfect scence if you are into non duality and spirituality or even if you just understand and approve of it. Everything is one and at the end everything balances out, there is chaos and there is balance, they both work together to give us perfect harmony. Great vid 👍

  46. Tacotoots12
    6 ditë më parë

    19:20 was that a cut???

  47. bmq34
    6 ditë më parë

    Who the hell give dislike to such a gread video? Anything wrong with it?

  48. Simon Mølgaard Hansen
    Simon Mølgaard Hansen
    6 ditë më parë

    Hi. This night I was at a concert, and at the end it dawned upon me that the applause didnt synchronize the same way it usually does, unlike shown at around 10:00. Due to covid-19 we, as individuals, havent been attending consert etc. And we were sitting with distance. I wonder if it could have a connection?

  49. Kian F
    Kian F
    6 ditë më parë

    I love the guest guy, he was so enthusiastic!

  50. vicarioustube
    6 ditë më parë

    The young son of a friend of mine who had a heart transplant at 17 now at 19 his heart failed. He is alive and getting better at LA children hospital. But from your minute 14 it is quite amazing to visually see the electric representation of a heart failure. His dad told me about heart electrical specialist working on him or with him. I did send him this utmost pertinent link. Thank you!

  51. sergio gonçalves
    sergio gonçalves
    6 ditë më parë

    great vid but isnt the moon pulling itself further from earth? meaning its not completely in sync with the earth? with the right equipment and the panels that the astronauts put on the moon we can observe that phenomenon

  52. Arctic lama
    Arctic lama
    6 ditë më parë

    I clicked on this video only expecting to watch a couple minutes of it. I made sure to like and subscribe when it was done 👍

  53. Fletcher Johnson
    Fletcher Johnson
    7 ditë më parë

    It's pronounced pendulum not pendalum

  54. Eric
    7 ditë më parë

    Oh you really don't need the cheap red arrow click bait on the thumbnail.

  55. Кабаняра Клыков
    Кабаняра Клыков
    7 ditë më parë

    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!

  56. Ernest Gonzalez
    Ernest Gonzalez
    7 ditë më parë

    i should be paying for this

  57. Shawn Savage
    Shawn Savage
    7 ditë më parë

    You can’t understand the whole with the sum of its parts unless you first know who made the parts.

    1. Aarya Jain
      Aarya Jain
      3 ditë më parë

      So I can't understand 10= 9+1 completely? Good to know

  58. Shawn Savage
    Shawn Savage
    7 ditë më parë

    Man if this doesn’t make you believe in God idk what will

  59. Shawn Savage
    Shawn Savage
    7 ditë më parë

    God made nature to function this way. How awesome is that!

  60. Shawn Savage
    Shawn Savage
    7 ditë më parë

    Without God there is no order, He sets everything in order!

  61. Family Three
    Family Three
    8 ditë më parë

    must be why iv never heard of or seen this bridge and work in london

  62. Halima Nasrin
    Halima Nasrin
    8 ditë më parë

    Outstanding demonstration , well said.

  63. Fenrir
    8 ditë më parë

    Someone please share the secret of synchronization with the Windows OS, because for more than 15 years not a single Windows machine I've ever had has successfully sychronized with a time server, not even once.

  64. Schwatzen zero
    Schwatzen zero
    8 ditë më parë

    Me watching the video : 15:02

  65. The Wolf Gaming
    The Wolf Gaming
    8 ditë më parë

    Veritasium : "So u naturally expect universe to be *MESSI* " Ronaldo fans : Nooo, i expect the universe to be Ronaldo.

  66. Pilton Jones
    Pilton Jones
    8 ditë më parë

    It also brought all the fighters to the strongest being on earth.

  67. James Lento
    James Lento
    8 ditë më parë

    Fun fact my last name is lento it’s also on metronomes 50bpm

  68. asher platts
    asher platts
    8 ditë më parë

    Fantastic video

  69. Tim Jessel
    Tim Jessel
    9 ditë më parë

    How is clapping mysteriously synchronised?? We adjust our clap due to the overall sound and by watching those next to you. This is using our own human abilities.

  70. Open Heart
    Open Heart
    9 ditë më parë

    Women can even synchronize their periods if they get in to a close group for some time.

  71. zokonjazokonja
    9 ditë më parë

    19:05 "that's why we don't understand immune system very well... " Now that's some sort eye opening, especially theese days

  72. Cleveland explorer
    Cleveland explorer
    9 ditë më parë

    I'm not sure about the relation of fireflies, might it also be compared with sociology, people in large crowds now behaving as themselves because of how the crowd or atmosphere is, like a starling murmurstion perhaps? Very very interesting

  73. Juan David Navarro Ortega
    Juan David Navarro Ortega
    9 ditë më parë

    Does this happen also to larger celestial bodies, planets oscillating around stars, stars around galaxies or even black holes?

  74. Airbag888
    9 ditë më parë

    The kiwiko crate won't ship to my country... Devastated 😭

  75. Bottom Dollar Outdoors: Hunt. Fish. Grow.
    Bottom Dollar Outdoors: Hunt. Fish. Grow.
    9 ditë më parë

    This is one of my favorite videos on ALfirst.

  76. Ali Fatih Yılmaz
    Ali Fatih Yılmaz
    9 ditë më parë

    plot twist : living in computer reality , just crashes after 155 player in same area and fix script working

  77. Bunny Bevy TV
    Bunny Bevy TV
    9 ditë më parë

    The water doesn’t freeze at the same time...but I suppose y’all put that in there to screw with smart people and trick us into commenting 😭

  78. Kris Stepke
    Kris Stepke
    9 ditë më parë

    This is vibration space time stuff

  79. Jacob Gardiepy
    Jacob Gardiepy
    9 ditë më parë

    13:50 imagine filling a pool with that stuff

  80. The Gorn
    The Gorn
    9 ditë më parë

    Millenium bridge pays homage to millenials. i.e. complete failures.

  81. The Gorn
    The Gorn
    9 ditë më parë

    2:16 "Famous Dutch physisis Christiaan Huygens" Everyone: "who?"

  82. Jacob Hood
    Jacob Hood
    9 ditë më parë

    Can we see a similar pattern in the collection of thoughts in society?

  83. TwistedVNM
    10 ditë më parë

    How can we not understand the economy we as humans invite it. It's not part of nature or science

  84. TwistedVNM
    10 ditë më parë

    Next time you are in traffic look at the turn signals they will synchronize then get out of synchronization then get back into synchronization

  85. Tiny Tuber
    Tiny Tuber
    10 ditë më parë

    i wonder, why is it when i'm at an intersection, blinkers synchronize aswell

  86. Q Q
    Q Q
    10 ditë më parë

    This makes me think of when I’m at a stop light and my blinker starts syncing up with the car in front of me for a few seconds

    1. Metalman Extreme
      Metalman Extreme
      6 ditë më parë

      Or when your bouncing your leg and notice the person nearby is bouncing in sync

    2. bipedalbob
      7 ditë më parë

      It only happens when you watch it.

  87. Stephen Birks
    Stephen Birks
    10 ditë më parë

    Thats is an amazing insight- thank you for showing and explaining ?

  88. Miguel V
    Miguel V
    10 ditë më parë

    0:06 In NY I milly rock

  89. Mirdjan Hyle
    Mirdjan Hyle
    10 ditë më parë

    Adam Neely has entered the chat.

  90. Allan Salzman
    Allan Salzman
    10 ditë më parë

    The notion of the moon “rotating about its axis” has bugged me for a while and I think it comes down to the definition of rotation. When viewed from a fixed Newtonian frame of reference, as in your animation, an observer sees all sides of the moon, hence you could say it’s rotating. But it’s not rotating about its own axis. Once the moon has been tidally locked, it no longer rotates about its axis. The analogy would be the pedal on a bike where the pedal is the moon and the center of the crank is earth. If you held the pedal and did one full rotation the pedal would rotate about its axis and the “earth” would see all sides of the crank. But an observer in the room would only see one side of the crank. If instead you did not touch the pedal but rotated the crank one revolution, the pedal would clearly not rotate about its axis and the “earth” would only see one side of the pedal...but someone standing in the room would see all sides of the pedal and hence say that it was “rotating”.

  91. eioshen boboi
    eioshen boboi
    10 ditë më parë

    explaining his first experiment. That was very cool to see.

  92. Collin Wilkerson
    Collin Wilkerson
    10 ditë më parë

    What if several metronomes were set on a large plane that sit on balls instead of cylinders and the metronomes were facing towards the center in a square shape

  93. some time
    some time
    10 ditë më parë

    15:06 19:00 lol you seems convinced

  94. Lisa Gunnison
    Lisa Gunnison
    10 ditë më parë

    I would like to know why fireflies will decide to gather around a random individual......and light up.... is it smell? It’s like they are in unison and in step with you and not anybody else around you.....odd

    1. eioshen boboi
      eioshen boboi
      10 ditë më parë

      Rocket Ei are)uuuu

  95. WeTubule
    11 ditë më parë

    9 million subscribers. He makes an episode featuring pendulums and can't get software that even comes close to illustrating pendulum motion. 🤨

  96. Navin Singh screen
    Navin Singh screen
    11 ditë më parë

    we were 3-4 friends, alwys cycle together. i always used to think "How r we doing this or y r we doing this"

  97. Dark
    11 ditë më parë

    In a complex system, chaos is the norm Women: hold my beer

  98. Wendy
    11 ditë më parë

    Chinese medicine is about the property of the whole for human body instead of part by part. It looks at human body as one whole system. Unfortunately not so many people believe in it anymore...

  99. Willaraz
    11 ditë më parë

    15:01 Mr. Veritasium is Not impressed! 19:03 Mr. V. continues to be unimpressed

  100. Zizi Mugen
    Zizi Mugen
    11 ditë më parë

    To be fair, the audience in Bucharest isn’t a part of the synchronization phenomenon. One person decides it’s time to do a slow-clap and build-up, and that person’s friend or the person on the other side thinks it’s a good idea, they get louder, people generally like the build-up of a slow-clap, and everyone chooses to get in on it.