Dominoes - HARDCORE Mode - Smarter Every Day 182

  • Published on Dec 11, 2017
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    Slow Motion Sound, Ambiance and musicy things by: Gordon McGladdery did the outro music the video.
    Dominoes Provided by:
    I expected the hardwood to be faster than the felt because the rotational moment of inertia when spinning around the center is 1/4th that of tipping on the edge. I was wrong in this case, but I'm wondering if this would hold true on glass?
    THANK YOU EVERYONE who helped reduce the data! Names at bottom of this description. Follow the SED subreddit and other stuff if you want to help with stuff like this in the future. Here's the link and spreadsheet to see how we did this:
    Rotational Inertia of falling dominoes can be calculated with this.
    There are several papers on dominoes out there... but none really touched on the stuff I'm talking about in this video. Please feel free to point me to sources if you've found them.
    I'd like the thank everyone who follows me and especially those who helped process the data (names at bottom)
    @smartereveryday on Twitter
    I'm "ilikerockets" on Snapchat.
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    THANK YOU to the following folks who helped process the data names below!
    (See the data here:
    GH, Blitz, Kelly F., Ruvi L, Kelly F., Andrés L., Andrés Lit., Austin , Kelly F., Ely, Blitz, Blitz, Nathan Graves,
    Leo G, Simon Zhang, Bryan Habas, Bryan Habas, Austin Hermle, Thomas Kempf, ZachPruehs, Zach Wiggin, Matt Hackett, Maurice Fahn, Felix Maas, Alan B, Scott W, Andrew W, CM. Au Yong, André vD, Jacob Pierson, Felix Maas, CM. Au Yong, Dan Whettam, CM. Au Yong,
    Patrick Ford, Patrick Ford, Tom Haake, Heather Deter, Nathan Samchek, Kit Komarov, Nathaniel Leung, Daniel Johnson, Luke Israelson, Patrick Ford, Zach Banks, Jay Anderson, Mark Brouwer, Mark Brouwer, Tom Haake, Andrew I. Young, Austin Burnham, Mark Ellis,
    Ben Heckard, Jeff Steiner, Martin Licko, Seyyed Ali Hedayat Mofidi, Jacob Brausch, Jonathan Baston, Eyal Dayan, Daniel Hardy, James Reardon, Leonardo Garcia, Ryan Crowley, Asad Mirza, Ben Perry, Caleb Crow, Joe Schey, Flo Hörtnagl (@fhoertnagl), Ben Martens, Andrew Hawcroft, Seyyed Ali Hedayat Mofidi, Mathieu MacAdam,
    Humaid Mustajab, Andrew Afflitto, James Frazier, Dustin Ybarra, Arthur Scott, Andrew Mleczko, Calvin Franz, Josh Sheldon, Todd Gallant (@galtomasum), Anthony Rovegno,Daniel Bethel (@SpiderRobotMan), Graham Allen, Kevin Schwarz, S. E. Vidrio, Will Slack, S. E. Vidrio, Pat Bigelow, Nate Thompson, Grant Hoover, Chris Carey, Steve Brand, Robert Beck, Robert Morgan
    Taxikab96, Wilda666, MrThursty, Christopher Britten, Kyle Pham, rafasc, HooliganTim, Grant Peter, nickleplated, Kyle Pham, Tommy Smith, Tommy Smith, Chris Allen, Georges Jaar,
    Noah C., Nathan K, Hunter B., Wyatt Wheeler, Hundter Biede, Alex Truax, Hundter Biede, Alex Price, Piotr Grzegorczyk, Andrew Lit, Sven Weihe, David Ruscalleda, Rory Semple, Max Kissen, Caleb Knight, Nathan Pak, Ben Kratz, Derek Haas,
    Also, thank you to my Church, First Bible Church of Decatur, Alabama for the use of the gym over 2 days.
    The thought is it my efforts making videos will help educate the world as a whole, and one day generate enough revenue to pay for my kids college education. Until then if you appreciate what you've learned in this video and the effort that went in to it, please SHARE THE VIDEO!
    If you REALLY liked it, feel free to pitch a few dollars Smarter Every Day by becoming a Patron.
    Warm Regards,
  • Science & TechnologyScience & Technology

Comments • 3 738

  • 3Blue1Brown
    3Blue1Brown 2 years ago +6256

    What a surprisingly fascinating topic!

    • Phil Chia
      Phil Chia 2 months ago

      Is there a "terminal velocity" for falling dominos?

    • yolars69
      yolars69 5 months ago

      I wonder if the air between the dominoes has an effect. I you did this in a vacuum would it have the same results?

    • Explore NC
      Explore NC 5 months ago +1

      For an infant i suppose it is surprising and fascinating.

    • Kevin Knox
      Kevin Knox 5 months ago

      Love your work, Grant!

  • Agent Dick Womble
    Agent Dick Womble 5 hours ago

    At 3:51... fantastic shot mo chara!
    Honest answer please, how many shots did that take?

  • Matt H
    Matt H 2 days ago

    1:14 I was really hoping you'd say "displacement". :-(

  • No name Mister
    No name Mister 2 days ago

    that one domine who refeses to fall😂

  • Eamonn Neeson
    Eamonn Neeson 3 days ago

    Did you notice the secondary wave on the hardwood floor? The dominos are hitting off centre as you said, but they alternate from offcentre to the right, to the lleft, and back again. it would be interesting to see if that period changes dependant on the coefficent of friction of the surface on which its done!

  • Off beat
    Off beat 3 days ago

    Grant sounded like if you mixed the voices of fitz and code bullet

  • SyeedSweis
    SyeedSweis 4 days ago

    So if the dominos are stacked close enough together, then the "twist" perturbation eventually cancels itself out. If they're not close enough together then the "twist" error propagates until the system becomes unstable.
    It sounds to me at first glance like this is a dynamical system that has it's own "built-in" feedback control system. In fact, the distance between the dominos acts almost like a control gain, where if you choose it to be higher than a certain threshold, it causes the system to become unstable. If I wasn't in the middle of finals, I would try to derive the equations of motion myself! Sounds like something I'll have to work on over the winter break!
    Really interesting problem, Destin!

  • Jasmine Aoi
    Jasmine Aoi 11 days ago

    that's totaly a home 2 hotel

  • Quinn Party
    Quinn Party 11 days ago

    The way you could have recorded it is. Where you figure out the speed of the domino’s and multiply it by the mass of the contraption that you built with a moter on it and what you get from that equation is the force you need
    Example: acceleration (of dominos) x mass (of contraption)= force (you need on the moter to make it go the same speed as the dominos)
    Example 2: 34m/s x 12kg = 408n

  • KacangNgoding
    KacangNgoding 14 days ago

    Okay, gw mulai pusing ngeliatnya, wkwkwk

  • Jubilee Lillian
    Jubilee Lillian 15 days ago +1

    basic research *LIKE HOW CELLS WORK. XD

  • Francesco
    Francesco 20 days ago

    Grande! I Watch you from italy and this channel has just become my favorite one

  • Curtis Jensen
    Curtis Jensen 22 days ago

    Woah, this gym was definitely in a church from The Church of Jesus Christ of Latter-Day Saints! (“Mormon”)

  • TLW6767
    TLW6767 23 days ago

    I was just watching the in depth set up domino video you have on your other channel. When you asked Lillie if they've ever tried Arial footage. I was wondering if you could test if a drone can create enough downward air movement to knock over or effect the dominos once they're all set up. You'd have to use Steve's swagar stick to set up mass amounts of dominos, which I think is your style. Wouldn't it be so worth it if the drone didn't effect it. You could get amazing footage next time.

  • boper
    boper 24 days ago

    Why not use a domino rally set?

  • Jin Shikami
    Jin Shikami 26 days ago

    Need a circuit solution? Why not use this Spot: androidcircuitsolver/app.html

  • Carlo Bertoia
    Carlo Bertoia Month ago

    I hope you paid your sound designer extra for this one!

  • Unknown_Darknass
    Unknown_Darknass Month ago

    How many stairs are there?

  • Thắng Thế
    Thắng Thế Month ago

    i need slow motion when she changing pant...

  • theysrone
    theysrone Month ago

    Definitely looks like an LDS church

  • Josh Thompson
    Josh Thompson Month ago

    Whew!! Getting emotional over here. I’m not crying, you’re crying. You goin for an academy award or something?!

  • 梅嶺七萬便當軍魂

    3:05 心有戚戚焉
    跟寫論文的時候一樣R 我完全看出來他很悲傷 XDDDDD

  • Matthieu Simard
    Matthieu Simard Month ago

    10:45 He's f*'n badass! He's like that dude in super-mario, that rectangle monolith with an angry face that falls down as soon as you come closer. "Moving ahead! Get off!!"!

  • Min Eung Kim
    Min Eung Kim Month ago +2

    This video was sponsored by.

  • Jiří Bém
    Jiří Bém Month ago +1

    love the explanation of why you have did this :] 11:14 - 12:54

  • Bobby Doyle
    Bobby Doyle Month ago +1

    I know that gymnasium!

  • McInTEC
    McInTEC Month ago +1

    Would the earth spinning have anything to do with the twists?

  • ---ElectroMan---
    ---ElectroMan--- Month ago

    But couldn't a heavier material reduce the 'twisting' effect? What I assume are acrylic dominoes, if you were to change them to (hypothetically) lead domino's or another material that doesn't flex easily, the twisting effect would be negated would it not?

  • BleedingRaindrops
    BleedingRaindrops Month ago +34

    "the physics subreddit wasn't interested in doing physics that day"
    Everyone wants to be a scientist until it's time to do sciency things.

    • Anothr To
      Anothr To 5 days ago +1

      Shoulda taken it to theydidthemath more physics minded there.

  • 101 Percent Kyle
    101 Percent Kyle Month ago +1

    How old is uh- Hayden? Asking for a friend

  • Aditya Mishra
    Aditya Mishra Month ago

    Destin's wife- What's hardcore mode?
    Destin- Oh, you'll see

  • Jared Bergsma.
    Jared Bergsma. Month ago

    would you not be able to used a telephoto / super-telephoto lens and record from a distance? the further away you are the less perspective distortion there would be.

  • Kerbaman
    Kerbaman Month ago

    0:10 I don't just watch animals squirting things.....

  • Mark Bisson
    Mark Bisson Month ago

    Now add some variable, like cats. 😸

  • Mohit Singh
    Mohit Singh Month ago

    Wait does the smoothness of the surface, and the way the initial impact of the ruler impact the way the dominoes rotate and hit each other?

  • Arbaaz Jamadar
    Arbaaz Jamadar Month ago

    Best episode ever

  • Bryson Williams
    Bryson Williams Month ago

    Wow, I didn't know how things that seem to be simple can end up so complicated.

  • tankerboysabot
    tankerboysabot 2 months ago

    I suppose there was no way to do this with a curved mirror? I am only asking after a few minutes in the video.

  • Carlo Sabbatani
    Carlo Sabbatani 2 months ago

    ins't the initial force applied to the domino matters?

  • Lotsagrapes
    Lotsagrapes 2 months ago

    haha I hear 3 blue 1 brown as I afk again

  • #PossiblyRandom Gaming
    #PossiblyRandom Gaming 2 months ago

    He started the video at exactly 4 o’clock

  • Argonpath Art
    Argonpath Art 2 months ago

    You should try the whole thing over again in the future with a domino laying template rack to level out the human random spacing variation.

  • Jakub
    Jakub 2 months ago

    I really enjoy living in the XXI century

  • Dave-TBR
    Dave-TBR 2 months ago

    Oddly satisfying ASMR video 1 by SmarterEveryDay

  • David Park
    David Park 2 months ago

    I’m craving jolly ranchers and jello

  • GBRL
    GBRL 2 months ago

    This is interesting, I would advise though if you want to retry it, to do a mecanical pusher so that the starting velocity and point of intersection matches each time. I'm guessing that the speeds do differ because of the force put up by your cousin. Humans can't control their accuracy and force that much. That's why the rotation in the dominoes and might want to think about the small imperfections in the dominoes too. So the data might be obsolete in your study. /justmytwocents ^_^

  • CJWarlock
    CJWarlock 2 months ago

    The end scene rules. :)

  • CJWarlock
    CJWarlock 2 months ago

    I've heard 23andme's results are too veg and inconclusive to risk your DNA sample privacy. Plus they add by default a ">1% African" to every result (possibly because of PC reasons). Use it once and you'd have to be ready for the future AI to revoke your biometrics-dependent public transportation access rights if your China-like social-credit drops because of your private opinions. ;)
    I know a sponsor is a sponsor, I just didn't like to be silent about it... ;)

  • CJWarlock
    CJWarlock 2 months ago

    @2:32 I can very easily imagine a young viewer going like "Mom, I wanna be a contraption fabricator!" XD

    The job's name sounds awesome, so many R's! ;D

  • Charles Mbuvi
    Charles Mbuvi 2 months ago

    Hello @smarteveryday, i watched this video am still amazed by it. To start the domino effect, instead of pushing the first domino, try using a pendulum ball to initialize the fall. And use the same height to drop the ball... Just my 2 cents
    Good stuff keep it up up.

  • Nover 05
    Nover 05 2 months ago +1

    OK STOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP, I've made it 12 secs in, but let me get this straight. I come here to see videos that expand my mind, in what ever capacity that may be. Math (I really hate), science, laminar flow, even dominoes or whatever this video is going to be about. This turned out to be one of my favorite videos.

  • FatiTank Drawings
    FatiTank Drawings 2 months ago

    The sound was made good too!)

  • Ace Johnson
    Ace Johnson 2 months ago

    The power of enertia actually moves in a corkscrew. If you look at a the graph and a corkscrew at a side view , in 2D it looks like a wave. Think of how the momentum would travel at an over head/ 3rd person view above the dominos

    • Ace Johnson
      Ace Johnson 2 months ago

      If you hit the domino on the left side ever so slightly more, a clockwise rotation would start first and visa versa

  • Mateusz Czerniawski
    Mateusz Czerniawski 2 months ago

    This is awesome! I give you my subcriptiona and my like!

  • Randall Thomas
    Randall Thomas 2 months ago

    There is a dissertation hiding in here somewhere.

  • Mike Machnicki
    Mike Machnicki 2 months ago

    Just discovered this interesting video. Maybe I'm being naive but wouldn't it be easier to time the difference between the first domino hitting and the last domino then average the speed of the cascade. You could also make a stepper motor cart to do the filming run by an Arduino

  • Rudra
    Rudra 2 months ago +1

    who has got so much courage to dislike videos like these.....fear god people,cuz he likes sciece too

  • littlefave
    littlefave 2 months ago

    I'm a Civil Engineer who is completely fascinated by things other people think sound boring! Thank you for feeding that side of me lol!

    PRAKHAR GUPTA 2 months ago

    Wouldn't it before great if it is shot from above?

  • ActionJackGaming
    ActionJackGaming 2 months ago +1

    Did we ever discover if dominoes fall at different rates depending on their colour?