Unmixing Color Machine (Ultra Laminar Reversible Flow) - Smarter Every Day 217

  • Published on May 22, 2019
  • 2nd Channel Video: ru-clip.net/video/57IMufyoCnQ/video.html
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    Checkout these papers to learn a bit more about Taylor-Couette Flow:
    Wikipedia Article:
    Taylor's Groundbreaking Paper
    How instability forms

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  • Science & TechnologyScience & Technology

Comments • 4 699

  • SmarterEveryDay
    SmarterEveryDay  24 days ago +898

    If you're interested in seeing a stationary tripod shot here's one on the second channel. Consider subscribing to the second channel while you're over there.

    • Bill Keith Channel
      Bill Keith Channel 3 days ago

      You should be wearing gloves handling all that mercury.

    • Jono Pearson
      Jono Pearson 3 days ago


    • Thiago Jungles
      Thiago Jungles 6 days ago +1

      @destin hello smarter, i was thought something that only you are able to show and explain, you can make a video about the strong of the hair? how much carry or pressure these things can support? i hope you read this, ty

  • OldMate
    OldMate 9 hours ago

    I don't think the two cylinders needed to be so different in size a thinner gap would be better because it uses less syrup and mixes faster

  • MigsShiro Otaku
    MigsShiro Otaku 13 hours ago

    He fast fowarded so we wont because you might miss something he was going quite slow

  • Hercules Rockefeller
    Hercules Rockefeller 14 hours ago

    9 and a half minutes ago, I didn't know that laminar flow existed. Now I know more about it than 7 billion plus people on the planet.

  • Alejandro Mosqueira
    Alejandro Mosqueira 15 hours ago

    Spoiler, the colors never mixed

  • Jonathan Holden
    Jonathan Holden 16 hours ago +1

    Just watched this. It looks like you lost count both times and only did 6 revolutions either way. Regardless, it was an impressive fluid dynamics presentation. Thanks!

  • Peyton Carter
    Peyton Carter 16 hours ago

    Hahaha my sink has laminar flow

  • Gavin Ward
    Gavin Ward 17 hours ago

    That would be "Sir Geoffrey" or "Sir Geoffrey Taylor" but not Sir Taylor at 0:30.

  • Resilient Jackal
    Resilient Jackal 21 hour ago

    SmarterEveryDay likes laminar flow as as much as beato likes suschords

  • Joseph bourque
    Joseph bourque 21 hour ago

    What, How, Why... Sweet!

  • Andrew Wittenburg
    Andrew Wittenburg 22 hours ago +2

    Will Smith: It’s rewind time

  • Cyber Henning
    Cyber Henning 22 hours ago

    Destin, please do the mass-to-charge ratio experiment with the deflection tube and Helmholtz coils. With your video quality and slowmotion it would absolutely stunning (more than it already is).

  • Sebastian Sanchez
    Sebastian Sanchez 23 hours ago


  • j p
    j p 23 hours ago

    BUT....technically there was no mixing of the colored corn syrup. Right? It was just an illusion of mixing becausse they were spiraling on top of each other?

    • party4lifedude
      party4lifedude 16 hours ago

      they never really touched but if you looked at it from the side you are looking through all 3 layers so it filters the light as if they were mixed.

  • gluino
    gluino Day ago

    If the rotation were done very smoothly by a servo / stepper motor, could it do the same 7 rotations with fewer "striations"?

  • May CB
    May CB Day ago


  • Billie Piper’s Teeth

    J-Roc in da house!

  • A.P.B !
    A.P.B ! Day ago

    Striation due to the corn syrup warming up?

  • Alexis PERROTTEY

    100 000 Hitlers like this video

  • Roksana Dawil
    Roksana Dawil Day ago

    That's awesome!!! 😀

  • Jason Peterson
    Jason Peterson Day ago

    That’s amazing.

  • Solemn Solace
    Solemn Solace Day ago

    I am too high for this dark magic!

  • sterling archer
    sterling archer Day ago

    I feel more smarter now

  • Zack Darce
    Zack Darce Day ago +4

    He only did 6 turns.. watched that part 3 times and counted along with him every time and he keeps skipping #4.
    Great content though! the end was really really cool!

  • Jay H
    Jay H Day ago

    Smedley butler ,war is a racket

  • Carling
    Carling Day ago


  • Kryptonite
    Kryptonite Day ago

    that makes me think of time and how it seems to flow in one direction when we are the colored syrup. but someone outside of that syrup would be able to flip it, reverse it, manipulate it

  • AllThePressure
    AllThePressure Day ago

    Who else thinks this looks like an Ali a thumbnail😂

  • Louis Victor
    Louis Victor Day ago

    Thanks, Bob, I needed this.

  • Arthur Serino
    Arthur Serino 2 days ago

    Sorry, but it's NOT reversible mixing. The colors aren't actually being mixed, they're just being overlaid in a tightly-spaced spiral pattern. If they were actually being mixed, you wouldn't be able to separate them again by simply reversing the crank.

  • praveen ingavle
    praveen ingavle 2 days ago

    Awesome video on fluid mechanics

  • Dave Boothney
    Dave Boothney 2 days ago +3

    SED: "DO NOT fast forward this video!!"
    Also SED: *Fast forwards video*
    J/K A tasteful fast forwarding

  • Dave Boothney
    Dave Boothney 2 days ago

    Laminar Flow Day is celebrated in at least fourteen countries worldwide...

  • Kamal AL-Hinai
    Kamal AL-Hinai 2 days ago

    Good thing that he lost count on the second time as well!

  • SeemsSoBoring !!
    SeemsSoBoring !! 2 days ago

    Nobody :
    Not a soul:
    Me: it does look like a galaxy

  • Lambert SPIESS
    Lambert SPIESS 2 days ago


  • firecrow 797
    firecrow 797 2 days ago

    im surprised you didnt bring up the fact that this how a clutch works

    • Henrik
      Henrik 2 days ago

      A clutch in a car? hmm

    MIKE JIMENEZ 2 days ago


  • Arnold Morales
    Arnold Morales 2 days ago

    What kind of headphones do you have? Can you go over the science of noise cancelation (NC)?? THIS WOULD BE AWESOME !!

  • Eric Bartha
    Eric Bartha 2 days ago

    Destin is a better version of Bill Nye.

  • Charlson C. Kim
    Charlson C. Kim 2 days ago

    ultra awesome

  • Sam Davenport
    Sam Davenport 2 days ago

    I wish I could subscribe every time a video comes to an end, because every video completely earns it.

  • Van
    Van 2 days ago

    moral of the story dont eat corn syrup

  • Joel Underwood
    Joel Underwood 2 days ago +3

    This video is amazing... NUFF SAID!

  • Mike Morgan
    Mike Morgan 2 days ago

    David Bohm used this experiment to explain his concept of the Implicate Order of the Universe.

  • Jake Wagner
    Jake Wagner 2 days ago +13

    So Taylor expanded on Couette's work, that's a Taylor Expansion then. I knew it.

  • scheerBOM
    scheerBOM 2 days ago

    The only thing i learned is that its called taylor-couette flow... wow

  • Yagyaansh Khaneja
    Yagyaansh Khaneja 2 days ago

    watch from 6:30

  • Nick Rz
    Nick Rz 2 days ago +3

    Narrator: please dont fast forward it to understand it’s beauty.
    4:47 : fast forward it himself 3x times.

    • first last
      first last Day ago

      Well it was already sped up even before then.

    TSNEEM SALEH 2 days ago

    ياليت مترجمه بالعربي

  • Cari Ann du Toit
    Cari Ann du Toit 2 days ago

    That Was The coolest thing Ever!!

  • arul kathir
    arul kathir 2 days ago

    One thing, you have lost count during both the rotation during the experiment was conducted and they were co-indentally cut off each other. And the second thing, it was a good metaphor you mentioned and was perfectly timed to the coloured corn syrup to get back to their places by the end of it in relation to the metaphor as well. Nice video. Well done.

  • NeonX
    NeonX 2 days ago

    do a video on the science of music

  • Crypto Nein
    Crypto Nein 2 days ago

    Destin, I was really shocked by this video. When you pointed out the shear thinning in relation to this radial motion it very much reminded me of how the current geological formation theories are so very flawed. There's some research from a few outside-of-the-box university professors that are forging new channels of thought in planetary formation based on planets being shells with essentially hollow cores - your video here really threw my eyes wide open at how valid and plausible this research actually is! Their work goes further than anything else in current acceptance to properly explain earthquakes and various other phenomena we don't fully understand. Great video!

    • Crypto Nein
      Crypto Nein Day ago

      @Asrar Sultan you obviously didn't read a word I said and I reciprocated.

    • Asrar Sultan
      Asrar Sultan 2 days ago

      ​@Crypto Nein Every statement you made here is wrong at many levels, i can dissect them and then feed you their faults but why waste time over someone who lives like a troll.
      Physics and other sciences are not stagnant but very much blooming and expanding in different direction. It is only when you associate yourself with researching world you come to know about them. All the discoveries at the start of the 20 century are time tested and very much established while the recent findings cannot be given the status of established science until they are repeatedly falsified or proven to be correct which takes a plethora of time and then being printed on school text books such that stubborn trolls like you can know how world works.
      I myself do not hold scientific dogmas in high regard but whenever we want to prove something we are burdened to produce evidences contrary to mainstream paradigms.
      Shifts in thinking can only occur when you have potential to overturn how and what is already known.

    • Asrar Sultan
      Asrar Sultan 2 days ago

      @Crypto Nein ​ @Crypto Nein First of all your use of nonsensical jargon and barely expressive sentences is the real indication of being ignorant, intolerant, uneducated, conspiracy propagator, and being very daft in manners and possessing the demeanor that of a spoiled teenager. 'Overwhelming' is pretty vernacular and often used in everyday life. I very much expect such things from a person like you who interjects "lol"; "cool"; and other nonsensical words after every idea their brains can muster after drastic struggle. I think i showed real humility when i asked for your guidance in knowing the faults in geology (hope you know what those are in geology too). Instead of telling me what those faults are you started acting like a troll by insulting and criticizing me without anything to offer.
      Second ; English is my 3rd language and i think taking my typing skills as an insult to your intellect are very distressful.
      I'm researcher in Geology so it can be taken as my sincerity that I asked for your no-where to be found knowledge about geology. I'm ashamed at the capacity people tend to have to shun established sciences in favor of junk sciences.
      Last but not the least I very much hope that you are not from India, If yes then everything can be explained and understood regarding your netiquette and online behaviour

    • Crypto Nein
      Crypto Nein 2 days ago

      @Asrar Sultan your closed mindedness and inability to research is sincerely disturbing.

      This kind of a damned paradigm here is primarily why we are in a stagnant state in physics and many of the other sciences. The discoveries that are being made today are actually minuscule - but not because we know so much, but because people start to believe in this kind of dogma.

      I literally can give you names and their institutions, but what good would that do you or anyone else who relies on the mega-teat of "MSM" and it's subjugate MSS as you refer to?

      Your use of loaded words such as "overwhelming" is a red alert for those who think and reason. You use a few of these phrases that reveal true intent. If you could simply recognize that humility and a recognition of not knowing is the foundation of science itself, then tremendous growth could be achieved.

      Please also consider the time tested axiom about flies with honey and vinegar.

    • Asrar Sultan
      Asrar Sultan 2 days ago

      one should rely more on mainstream and less on fringe research until fringe is brought into the fold of mainstream via overwhelming scientific evidences. What we have currently is the best we got to explain geological phenomenon including earthquakes, though i support the idea that everything can be improvised until perfection.
      I don't see much flaw in our geology, Would you be kind enough to hint me about some so that it acts as an eye opener for me as well.

  • Joe Soh
    Joe Soh 3 days ago

    The mention you mentioned don’t fast forward, I did. Lol

  • E. Specht
    E. Specht 3 days ago

    The way he says " Couette" Couwette is so funny. J'ai froid, j'ai besoin d'une COUW ETTE aurait tu une COUW ETTE à me prêter?

  • Sigurður Logi
    Sigurður Logi 3 days ago

    My mind just exploded :O

  • brave moua
    brave moua 3 days ago

    You should check out a slow mo of a sand blasting for taking care of rust I wanna see how it works.

  • Bill Keith Channel
    Bill Keith Channel 3 days ago

    So when you slowly unwind the fallacious assumptions of the heliocentric model and get back to the the base that all else was stacked on you will realize that the earth is a stationary flat plane.

  • Bill Keith Channel
    Bill Keith Channel 3 days ago

    You should be wearing gloves handling all that mercury. tinyurl /HighFructoseMercurySyrup

  • MrSMF
    MrSMF 3 days ago


  • Gary Cz
    Gary Cz 3 days ago

    loved this video, thankyou

  • Thomas Willems
    Thomas Willems 3 days ago +17

    hey it's me Destin from LAMINAR FLOW

  • Charlotte Cunaud
    Charlotte Cunaud 4 days ago +17

    I’m french and your pronunciation of Couette is actually right so good job ! 👍🏻😂

    • Gen Li
      Gen Li Day ago

      Charlotte Cunaud that one is easy for us! :)

  • TheAbc45678
    TheAbc45678 4 days ago

    Can you explain how a smartphone knows how much battery power is left? The voltage is constant so how does it know how much energy is left? I've googled this and the answer appears to be "it doesn't know, it just estimates by measuring how much power was used since it was full". I don't like that explanation.

    • TheAbc45678
      TheAbc45678 3 days ago

      @Marcus Sykora Voltage detection only works when turning the phone on. ... "When the phone is running, we thus cannot rely on voltage measurements. " says the internet.

    • Marcus Sykora
      Marcus Sykora 3 days ago

      Smartphones use Lithium ion (Li-ion) batteries, these batteries operate within a certain voltage range. The smartphone is able to read the voltage of the battery and calculate the percentage of remaining battery power. Li-ion batteries use cells and each cell can store up to 4.2 volts, as the battery is used this will go down and most smartphones stop discharging to prevent damage between 3.0 and 3.6 volts. Past that your battery starts to damage itself, it’s pretty cool stuff. If you’re interesting in learning more look up “Lithium Ion Batteries”

  • Andy Ireland
    Andy Ireland 4 days ago

    Hey I heard that a duck’s quack doesn’t eco. Is this true?? How, why?

  • Divyaan Dhanak
    Divyaan Dhanak 4 days ago

    It’s amazing

  • MrCount
    MrCount 4 days ago

    That's awesome! Thanks for taking the effort and show us

  • general lobster
    general lobster 4 days ago +1

    this kind of messes up my conceptual understanding of Sean Carrols analogy about coffee and cream mixing to explain the arrow of time, and life from the perspective the of the second law of thermodynamics. But I guess the colors are not actually mixing in this demonstration of ultra laminar flow.

    • Matazj
      Matazj 2 days ago

      The colors are mixing and it's the same as the coffee and cream, it's just a difference of degree. The analogy is still valid. The second law is a statistical law, it can be 'broken' in certain situations but it's just so infinitesimally unlikely that it doesn't really happen, same with unmixing the coffee and cream.

  • James Shadle
    James Shadle 5 days ago

    Hey Destin. I’m a big baseball fan and it would be so cool if you could do a video on a pitch called a knuckleball

  • Chris Chow
    Chris Chow 5 days ago +1

    Liked this video when he started rotating. His passion transferred and I was actually so excited for this experiment to work. When Destin asked "is your heart pounding?"I didn't realize mine was haha

  • parer pro
    parer pro 5 days ago +8

    Do a video of how a rock skips on water and does the shape even matter

    • Eric Bartha
      Eric Bartha 2 days ago +2

      Check out Mark Rober! He actually did a video on this and built a machine to skip rocks perfectly (he and Destin are friends so I'm sure he would say the same thing).

  • Andrew Gleizer
    Andrew Gleizer 5 days ago

    Be interested in seeing if the fluid trace could be modeled with a polar function. It seems like it'd be easily modeled as a first order, with r dependent on theta. Another test done over a grid might make for some cool math!

  • Esphyxia [Dubstep]
    Esphyxia [Dubstep] 5 days ago

    This is like the coolest thing

  • Jacob Wilson
    Jacob Wilson 5 days ago

    I have an idea for a video: try to figure out why it's so hard to ride a bike backwards as in a normal bike going backwards down a hill why is it so hard to balance

  • Jen Pearson
    Jen Pearson 5 days ago

    I have a question about something like how you hear up and down. My question is how can you feel how something thick-ish and are able to tell that it's thick. For example if you take a 1/4 inch metal plate, close your eyes and pinch it with one finger on one side and the other on the opposite side you can tell that it's thick. If you can answer my question that would be great. Love your channel by the way!

  • GEO Pictorial
    GEO Pictorial 5 days ago

    Hi Destin.. I have only recently discovered your channel and I can't describe just how much I enjoy your videos..! I was never very mathematically minded at school.. physics and chemistry were unhappy mysteries for me and I just about coped with biology.. so no surprise I became a photographer..! As such, I have a heightened sense of wonder at this world we inhabit but you have added extra dimension and awe.. and I thank you for it. I would love to see you one day visit my homeland of Greece and to see your take on all those wonderful inventions the ancient Greeks came up with.. have you ever heard of the Antikythera Mechanism..? I would love to hear your take on it..! Wishing you and your family all the very best and thank you again.! g

  • Marianne M
    Marianne M 5 days ago

    Not sure if you'll see this cause there are more than 4.5K comments as of this posting and my info is off this topic but since this is your most recent posting here goes ... if you're still interested in bird slowmo video check out Leslie the bird nerd from Newfoundland. Her latest post (6/9/2019) has some great shots of blue jays direct incoming flight to land and takeoffs in slowmo. I know you usually partner with guys but with her patience and bird following partnered with your super slowmo cameras, the images would be great.

  • Marianne M
    Marianne M 5 days ago

    Not sure if you'll see this cause there are more than 4.5K comments as of this posting and my info is off this topic but since this is your most recent posting here goes ... if you're still interested in bird slowmo video check out Leslie the bird nerd from Newfoundland. Her latest post (6/9/2019) has some great shots of blue jays direct incoming flight to land and takeoffs in slowmo. I know you usually partner with guys but with her patience and bird following partnered with your super slowmo cameras, the images would be great.

  • Md Missile Islam Kd
    Md Missile Islam Kd 5 days ago

    I love this video.......thanks for it......

  • Uma Chan
    Uma Chan 6 days ago

    I've known about this. I've read about this. I understand the principle behind it. But to actually see it in action? That's so cool. Thanks Destin.

  • suf sanin
    suf sanin 6 days ago +1

    Can you please make a video on MAGLEV trains and how they work?

    • Elfien Spirix
      Elfien Spirix 3 days ago

      Ah maglev is fun, Hats what I study and work with xD You can build a makeshift model yourself with some basic ceramic fridge magnets (Preferably the disc ones with holes in the center) and a pencil. Current project, is the "Project Mcfly" Computer mouse. Yes Im serious.

  • Chloe Leis
    Chloe Leis 6 days ago

    My family and I were just discussing inverted and non-inverted "looking" in video games, trying to figure out why some of our brains work one way versus the other. My first thought was asking you, so do you have any explanation? A video would be awesome, diving into why we prefer one way and what might have influenced that. Thanks Destin!

  • That Homeless Scrubbalo

    Love it. Perfect way to explain a live lesson. Thank you

  • ayoub lotfi
    ayoub lotfi 6 days ago

    That was brilliant 😍

  • AJ Belville
    AJ Belville 6 days ago

    You should try a slow motion of the Garuda sanjeevani root climbing up a stream of water, I don't think it's been done before

  • Nelson Brown
    Nelson Brown 7 days ago

    Just how low does your Reynolds number go?
    Would you ever consider vlogging Stokes flow?

  • J. Rey
    J. Rey 7 days ago

    Guy gets a bit too excited about nothing.

  • PatrickTheDevil
    PatrickTheDevil 7 days ago

    You did 6 turns not 7

  • Anthony Stumpf
    Anthony Stumpf 7 days ago

    You should do a video on the physics of slinkies. It’s so cool

  • Hadley Lemar
    Hadley Lemar 7 days ago

    "Don't skip to the end, you'll miss my sponsor plug"

  • Shane Dunne
    Shane Dunne 7 days ago

    Rumour has it he is still counting to 7

  • nolan rains
    nolan rains 7 days ago

    I never wanted to blink while watching this

  • Silver Silverov
    Silver Silverov 7 days ago

    Unbelievable, very nice!!!!!

  • Jacob Campbell
    Jacob Campbell 7 days ago

    Destin I have a question that I would like you to try to solve something for me because I am very confused if you are interested in please contact me

  • Chloe RIP
    Chloe RIP 7 days ago

    You should do a video on vision and how we see color. Also how color is seen through a camera.

  • الناقد
    الناقد 7 days ago

    i don't know why u do that what is the purpose

  • Gixer750pilot
    Gixer750pilot 8 days ago

    It’s easy to pronounce , I’ll say it phonetically, it’s pronounced Tay-Lor , or Tay - La. practice you will get there

  • Affan Ahmad
    Affan Ahmad 8 days ago +1

    SmarterEveryDay what would happen if the angular velocity of mixing and unmixing has a very high gradient. Will the results be the same?
    Mixing at higher angular velocity may cause "slippage" of the fluid on the inner cylinder and unmixing at a slower velocity may have less or no slippage resulting in a possible different outcome.

  • artsycjm
    artsycjm 8 days ago

    Your awesome and laminar flow is awesome!