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
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. russell


    שעה לפני

    I was wondering from the beginning whether they were walking that way because the bridge was moving that way.

  2. America First

    America First

    2 שעות לפני

    You get a bunch of women living in the same house and their periods will mysteriously all sync up. I would know this because I lived with 3 sisters and I dreaded the end of the month.

  3. Jackaval Masovnon

    Jackaval Masovnon

    2 שעות לפני

    14:00 yo it's yah boi NileRed Les Gooooooo!

  4. The Era -The K10 Unlimited

    The Era -The K10 Unlimited

    3 שעות לפני

    19:05 is really good

  5. Professor Perry

    Professor Perry

    5 שעות לפני

    I immediately thought of tidal resonance and orbital resonance when I saw the title. Several demonstrations shown in this cideo. I will try in classes. Amazing video and great topic.

  6. James Barretf

    James Barretf

    9 שעות לפני

    Unfortunately the Hyatt Hotel KC catwalks collapsed 1981 due to poor design & being loaded heavy with dancers in step.

  7. Andrici Flavius

    Andrici Flavius

    14 שעות לפני

    What software do you use for animation? Can someone please tell me?

  8. It's a MIRACLE!!!

    It's a MIRACLE!!!

    17 שעות לפני

    13:53 ayyyyy its NileRed's video

  9. colorado841


    19 שעות לפני

    Another cheaper solution to the bridge problem: Give everyone slippery shoes so that they dampen the movement of the bridge themselves.

  10. Andrea Crystal

    Andrea Crystal

    21 שעה לפני

    MY BOY NILE RED!!!!!

  11. Jackshit


    יום לפני

    Is that Why socialism, keeping everyone in step fails as opposed to capitalism whereby everyone is moving at their own pace , Works ??

  12. Bran Bro

    Bran Bro

    יום לפני


  13. Stephen Scoza

    Stephen Scoza

    יום לפני

    The same band conversly judge because cost incidentally practise against a squealing visitor. beneficial, glistening glorious criminal

  14. brendy isabel santiago ullero

    brendy isabel santiago ullero

    יום לפני

    The deserted fox interspecifically drown because airplane suggestively wander round a flowery transmission. stale, difficult passbook

  15. Mario Alberto Moreno Enríquez

    Mario Alberto Moreno Enríquez

    יום לפני

    This is a good argument agains socialism. No need to tank me You don't need to force people. The will do it by their own.

  16. Bettsbe58


    יום לפני

    The scientific person retrospectively pine because pedestrian lilly ruin round a blue plough. debonair, ashamed pond

  17. Burton Sumner

    Burton Sumner

    יום לפני

    I don’t think I’d be able to contain my laughter if I was in an audience where our clapping synchronized

  18. ps3songs


    יום לפני

    Can’t you use that metronome model to measure the one way speed of light? If you fired a light beam from that first metronome to the another metronome with a receiver on that platform wouldn’t that give you the one way speed of light?

  19. KidTheScienceSid


    יום לפני

    10:00 the robot uprising

  20. Lhord Balismon

    Lhord Balismon

    יום לפני

    The two touch generally prepare because bush compellingly fold amid a slippery check. tight, wise intestine

  21. Thomas Redis

    Thomas Redis

    יום לפני

    dont forget female periods

  22. xAngoryx


    2 ימים לפני

    15:00 that cut away edit made me laugh for some reason

  23. Jerry Tokman

    Jerry Tokman

    2 ימים לפני

    The foregoing thrill preclinically offer because gender evocatively smile apud a knotty whistle. uninterested, entertaining maraca

  24. Léopold Szabatura

    Léopold Szabatura

    2 ימים לפני

    Shouldn't the bridge stabilized since people are applying a force in an opposite direction of the bridge movement ?

  25. Se Es

    Se Es

    2 ימים לפני

    The lean semicircle neatly attend because radar cytopathologically boil before a selective linda. ossified, red cougar

  26. Viyus Avery

    Viyus Avery

    2 ימים לפני

    Is this the reason why people say you are the average of the people you surround yourself around??

  27. Benjamin


    2 ימים לפני

    15:01 lol

  28. ThomasC


    2 ימים לפני

    Wow ! I studied models of spiral waves in excitable media when I was a student ! Memories !

  29. Adam Hlali

    Adam Hlali

    2 ימים לפני

    Slightly below 9 million subs? Damn this channel should have more.

  30. Zsomi Zsomi

    Zsomi Zsomi

    2 ימים לפני

    Regarding the clapping, I am also Hungarian and I've been to many theatres and operas monthly during my high school years i do not know customs in other countries but here people at the end of the show clap chaoticly, and then when the "synchronization happens" it's just that usually the actors go behind the curtain, and then some people start clapping that way and the others follow because it means "come back we want more" it's a polite way to show the actors some love on top of the regular clap and it's often repeated more than once as well in the same show so it's just the encore.

  31. gaming gaming

    gaming gaming

    2 ימים לפני

    the way he pronounces longitude angers me

  32. David Liebtag

    David Liebtag

    2 ימים לפני

    Synchronized applause happens regularly in Europe, but seldom in the United States. This makes me doubt it is entirely natural.

  33. LowKey_Entertaining


    2 ימים לפני

    That was so cute when the kid thought of an experiment.

  34. Tia Gen

    Tia Gen

    3 ימים לפני

    Loved this video Tbf, people were morons to go on that bridge with 1000's at a time~~ Normally there wont ever be that many. So repairs felt, forced

  35. Sly Cooper

    Sly Cooper

    3 ימים לפני

    I was thinking does swings have this same thing

  36. Rigel Gabrielle Cruz

    Rigel Gabrielle Cruz

    3 ימים לפני

    might be late but hear me out, what if earthquakes are caused by billions of people subconsciously syncing up Q_Q

  37. Edison Lomibao

    Edison Lomibao

    3 ימים לפני

    15:01 me this whole time

  38. Divyajyoti


    4 ימים לפני

    This video is like showing something beautiful and surreal. It's something which happens right in front of us but still feels like magic or something higher connecting us all.

  39. pooper dooper

    pooper dooper

    4 ימים לפני

    10:00 they knew what they were doing

  40. Miramar Gustofson

    Miramar Gustofson

    4 ימים לפני

    Whoa! I put off watching this until I was still, and yet... It is so good, but I paused it many times to digest what it is saying.

  41. Alex Soul

    Alex Soul

    4 ימים לפני

    Wow, I love how this principle explains Moon lock

  42. Lockheed F-35B Lightning II

    Lockheed F-35B Lightning II

    4 ימים לפני

    Today I saw two turn signals sync up and I thought it was the coolest thing

  43. coolroy_25


    4 ימים לפני

    "Chaos is the norm." *Jevil liked that. UEE HEE HEE!*

  44. Matthew Palomino

    Matthew Palomino

    5 ימים לפני

    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.

  45. Mark B

    Mark B

    5 ימים לפני

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

  46. Adam Hessenflow

    Adam Hessenflow

    5 ימים לפני

    1:50 zombies that's why.

  47. Henny Yang

    Henny Yang

    5 ימים לפני

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

  48. D Solis

    D Solis

    5 ימים לפני

    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

  49. Michael Thomas

    Michael Thomas

    5 ימים לפני

    Watchin 2160p

  50. CJ Cheifer

    CJ Cheifer

    5 ימים לפני

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

  51. dopiaza2006


    5 ימים לפני

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

  52. nicos goulielmos

    nicos goulielmos

    5 ימים לפני

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

  53. i love waflz

    i love waflz

    5 ימים לפני

    Pendulum best deck

  54. Nicool Man

    Nicool Man

    5 ימים לפני

    Ooooh that's where the Nilered profile picture came from

  55. Justin Davis

    Justin Davis

    5 ימים לפני

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

  56. Kurt Cunningham

    Kurt Cunningham

    5 ימים לפני

    The an,,swer, to your question is consiousness

  57. Didier Loiseau

    Didier Loiseau

    6 ימים לפני

    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.

  58. Kolvorok


    6 ימים לפני

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

  59. Sira Vista

    Sira Vista

    6 ימים לפני

    Another amazing jaw dropping video.

  60. fvirk


    6 ימים לפני

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

  61. jacob yeager

    jacob yeager

    6 ימים לפני

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

  62. Louis Markosian

    Louis Markosian

    6 ימים לפני

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

  63. Rob P.

    Rob P.

    6 ימים לפני

    This was your best video so far ....

  64. 3ric Car

    3ric Car

    6 ימים לפני

    is this why female minstrel cycles sync?

  65. Carlos Silva

    Carlos Silva

    7 ימים לפני

    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?

  66. Nilson G Silva

    Nilson G Silva

    7 ימים לפני

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

  67. Ilgar Roshen

    Ilgar Roshen

    7 ימים לפני

    20:26 You are a great father

  68. Piper Mahon

    Piper Mahon

    7 ימים לפני

    nile red

  69. eyewazear


    7 ימים לפני

    46 and 2 is a song about synchronization

  70. Tanner W

    Tanner W

    7 ימים לפני

    3:33 this is very disturbing looking

  71. Devin Grba

    Devin Grba

    7 ימים לפני

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

  72. Kataka Zikato Tekikazi

    Kataka Zikato Tekikazi

    7 ימים לפני

    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.

  73. Foster Hellendoorn

    Foster Hellendoorn

    7 ימים לפני

    It takes a dutchman to figure things

  74. Berserk 007

    Berserk 007

    8 ימים לפני

    what's the song at 15:30 ?

  75. Zizi Roberts

    Zizi Roberts

    8 ימים לפני

    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. ❤️

  76. hiPsDonLiE


    8 ימים לפני

    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.

  77. Switzel


    8 ימים לפני

    Yes this is definitely more important than homework.

  78. tttm99


    8 ימים לפני

    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.

  79. Горькие Усы

    Горькие Усы

    8 ימים לפני

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

  80. Blu Berry

    Blu Berry

    9 ימים לפני

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

  81. Ипполит Матвеевич

    Ипполит Матвеевич

    9 ימים לפני

    So what's the secret of synchronization?

  82. Bafelmauk


    9 ימים לפני

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

  83. Вадим Владимирович Тимофеев

    Вадим Владимирович Тимофеев

    9 ימים לפני

    I hate the frog LYAGULYALYULIN its impossible

  84. Troy Ward Jr

    Troy Ward Jr

    9 ימים לפני

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

  85. Cool Legend

    Cool Legend

    9 ימים לפני

    nile red and veritasium are just amazing youtubers

  86. Rojar Jonez

    Rojar Jonez

    9 ימים לפני

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

  87. Darrell Border

    Darrell Border

    10 ימים לפני

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

  88. I HaveNoGunGame

    I HaveNoGunGame

    10 ימים לפני

    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 👍

  89. Tacotoots12


    10 ימים לפני

    19:20 was that a cut???

  90. bmq34


    11 ימים לפני

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

  91. Simon Mølgaard Hansen

    Simon Mølgaard Hansen

    11 ימים לפני

    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?

  92. Kian F

    Kian F

    11 ימים לפני

    I love the guest guy, he was so enthusiastic!

  93. vicarioustube


    11 ימים לפני

    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!

  94. sergio gonçalves

    sergio gonçalves

    11 ימים לפני

    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

  95. Arctic lama

    Arctic lama

    11 ימים לפני

    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 👍

  96. Fletcher Johnson

    Fletcher Johnson

    12 ימים לפני

    It's pronounced pendulum not pendalum

  97. Eric


    12 ימים לפני

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

  98. Кабаняра Клыков

    Кабаняра Клыков

    12 ימים לפני

    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!

  99. Ernest Gonzalez

    Ernest Gonzalez

    12 ימים לפני

    i should be paying for this

  100. Shawn Savage

    Shawn Savage

    12 ימים לפני

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

    • Aarya Jain

      Aarya Jain

      8 ימים לפני

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