Two Vortex Rings Colliding in SLOW MOTION - Smarter Every Day 195

  • Published: 20 June 2018
  • This took 4 years to recreate. 12 Hour edit here:
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    I’ve been chasing this problem for over 4 years. The 12 hour edit chronicles the entire process after David Linderman and myself started working on it in earnest.

    People don't tweet me their thoughts about videos enough. I'd love to hear from you.

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    Song “Rings in Rings in Rings” by Gordon McGladdery of A Shell In The Pit
    Listen to it on Spotify: (It helps
    All A Shell in the Pit music available at:


    A Vortex Ring is also called a Toroidal Vortex

    Original Research Paper by T. T. Lim & T. B. Nickels (Published in Nature 1992)

    Governing Equations of Fluid Mechanics

    Numerical Analysis of this phenomena

    Interesting Research Papers on Vortex Ring Reconnection

    Other Videos created by Dr. T T Lim

    Flow Visualization, A Book by Dr. T T Lim

    Why we typically don’t talk about angular momentum in fluids.

    We used a computer controlled cylinder to pump fluid behind a rubber membrane to fire toroidal vortices out of the vortex cannons.

    We fixed one of the vortex cannon in a stationary position, and used a multi-axis microscope stage to align a second cannon to it… which sounds incredibly easy, until you realize that

    DYE density was an experiment all on its own.
    If the density of the dye mix was light than water, the vortex would go up.
    If the dye was more dense than water the vortex would fall.

    We had to overcome SO MANY VARIABLES to overcome and we basically spent about 4 hours figuring each variable.
    Water/dye temperature differential
    Water turbulence
    Water turbidity (cloudiness or haziness of a fluid)
    How to reset the aquarium
    Cannon Spacing
    Cannon Nozzle
    Cannon Shape
    Dye homogeneity in the vortex itself
    The piston displacement volume
    The piston stroke speed
    Rubber diaphragm tension, would make one side fire faster than the other.
    Water or air to drive diaphram?
    Firing speed (too slow and they drift, too fast and turbulence tears apart secondaries)
    We did a complete redesign of the cannon 3 different times.
    The Dye loading method was changed several times
    At times We tried to maintain negative pressure on the cannon chamber… we also tried to put shutters on the front of the muzzle. Ultimately I decided it was ok to live with dye dripping out of the front.

    We had to premix the dyes and eventually we got there.

    It got to the point where we didn’t even really know what success looked like and always thought we were there.

    The thought is 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 and Technology Science and Technology

Comments • 12 709

  • SmarterEveryDay
    SmarterEveryDay   10 months back

    Thank you to the Patrons of Smarter Every Day for helping me do things like this:

    • Jalil29
      Jalil29  2 weeks back

      Have you considered putting two sets right next to each other, get the pairs secondary rings to collide each other?

    • Imaginaton Blueprints
      Imaginaton Blueprints  2 months back

      Earned a sub from me 😉

    • Alan O
      Alan O  4 months back

      What would happen if you did it in a vacuum

    • Alan O
      Alan O  4 months back

      What would happen if you did it in a vacuum?

    • skyler cox
      skyler cox  4 months back

      A very uneducated guess. Maybe the outward force of the vortex collision in tandem with whats going on with the pressure, funnels the outward force into generalised points creating a secondary vortex effect

  • Awab Khalifa
    Awab Khalifa  53 minutes back

    Thirsty africans: am i a joke to you

    • Альков Ровены

      You're awesome

      • Midan yaz
        Midan yaz  8 hours back

        Yoo dude

        • Eduardus RK
          Eduardus RK  8 hours back

          Do you guys remember particle collision machine in Spiderverse?

          • Artūras Chalpinas
            Artūras Chalpinas  9 hours back

            Just take 2 vapers duh...

            • THE_HIGHLAND_FOX
              THE_HIGHLAND_FOX  11 hours back

              4:58 казалось причём тут украина

              • AmielZ7
                AmielZ7  14 hours back

                Cuando encuentro videos como estos, por mucho que me aburra la publicidad, me quedo a ver el vídeo completo casa segundo, con la esperanza de que te ayude.

                • SantiDBT
                  SantiDBT  15 hours back

                  Desde que YouTube me pone títulos en español veo mas videos en ingles que en español jajjajaja

                  • Mark Atkinson
                    Mark Atkinson  18 hours back

                    This is such an amazing video my 8 year old daughter is absolutely fascinated by this video and wants to learn more thankyou for what you do

                    • gamermoda fakinshow
                      gamermoda fakinshow  21 hours back

                      Does anyone know the name of that song? I *need* it * - *

                      • kobakin ch
                        kobakin ch  21 hours back

                        I’m Japanese

                        • WZLomka368
                          WZLomka368  22 hours back

                          4:42 Слава Украине

                          • Joe Joe
                            Joe Joe  23 hours back

                            I failed NNN because of this.
                            Hope you are happy 😔

                            • dani 89
                              dani 89  1 days back

                              Trop beau😮

                              • Davaky
                                Davaky  1 days back

                                try with 6 vortex

                                • Arkankraft Gaming
                                  Arkankraft Gaming  1 days back

                                  Awesome thank you for sharing with us :)

                                  • Like You
                                    Like You  1 days back

                                    Me: Trying with vape, and it actually works lmao

                                    • VIntAge •
                                      VIntAge •  1 days back

                                      4:55 СЛАВА УКРАИНЕ!

                                      • Тим Тимыч
                                        Тим Тимыч  1 days back

                                        Модель Вселенной, как есть

                                        • Radiorc s2
                                          Radiorc s2  1 days back

                                          6:20 you're welcome ;D

                                          • Knell Jasminez
                                            Knell Jasminez  1 days back

                                            Now this is passion.

                                            • Петр Владимирович

                                              Поставьте скорость воспроизведения на 0.25 на 6:40 и нажмите плей. Эти 2 кольца начинают приплюснуваться ещё до того, как стукнутся

                                              • Stanley Joelianto
                                                Stanley Joelianto  2 days back

                                                Kamehame haaaaaa

                                                • Hollow One
                                                  Hollow One  2 days back

                                                  yeah its pretty but rip three years so many other ways to learn persistence an "so much more"

                                                  • Carlos Angulo
                                                    Carlos Angulo  2 days back

                                                    Chabelo cuando era más joven :v

                                                    • alex alfaro
                                                      alex alfaro  2 days back

                                                      Really luv ur videos very educational and entertaining keep them comin

                                                      • TylerSUPERSAIYANsaitama

                                                        100% beautiful
                                                        100% educational
                                                        100% amazing

                                                        *100% water bill*

                                                        • 4N0MYM0U5
                                                          4N0MYM0U5  3 hours back

                                                          This .. is copied.. the original comment is one of the top comments

                                                      • TylerSUPERSAIYANsaitama

                                                        *time to take screenshots!*

                                                        • Jeff Mclearen
                                                          Jeff Mclearen  2 days back

                                                          That is so beautiful

                                                          • Hoang MVP
                                                            Hoang MVP  2 days back

                                                            make a video about vortex Rings Collision
                                                            taught a lesson of life

                                                            • Adrian Torres
                                                              Adrian Torres  2 days back

                                                              Pure psicodelyc

                                                              • Фарид Галиуллин 2

                                                                В России бы денег даже на воду не хватило)

                                                                • TAPS
                                                                  TAPS  2 days back

                                                                  Omg this is just insane and beautiful ;-;

                                                                  • Frick_ Fuck
                                                                    Frick_ Fuck  2 days back


                                                                    • MOHAMMAD HIGRO
                                                                      MOHAMMAD HIGRO  2 days back

                                                                      Are you crazy three year

                                                                      • Mr. anime
                                                                        Mr. anime  2 days back

                                                                        The teory, resuelta de los agujeros negros es el punto final donde se interconectan los universos ala hora que chocan entre si se produce un portal y depende de que universo seas seras arrastrado al otro si te acercas mucho al agujero negro....

                                                                        • Петр Юрьевич

                                                                          4:55, Україна це Європа

                                                                          • 문명진
                                                                            문명진  2 days back

                                                                            유튜브의 알수없는 알고리즘이 날 여기로 데려왔다

                                                                            • КРУЖКА ЧАЯ
                                                                              КРУЖКА ЧАЯ  2 days back

                                                                              Oh, u spend 3 years to recreate that... NICE PHOTOSHOP😉

                                                                              • N E W
                                                                                N E W  2 days back

                                                                                Let’s face it. We’re all just here for the vortex colliding

                                                                                • bryan lalramchhana Hringngen

                                                                                  In order to created secondary rings both has to eject ink at same velocity thats all..

                                                                                  • Jader Peixoto Cardoso
                                                                                    Jader Peixoto Cardoso  3 days back

                                                                                    Isto não é câmera lenta !

                                                                                    • HBK
                                                                                      HBK  3 days back

                                                                                      When he said "What's your vortex collision ?" That had me sentimental real quick

                                                                                      • zo go
                                                                                        zo go  3 days back


                                                                                        • Lion RAR
                                                                                          Lion RAR  3 days back

                                                                                          Не показывает это вейперам с:

                                                                                          • ZAUCE THE SAUCE BAUCE
                                                                                            ZAUCE THE SAUCE BAUCE  3 days back

                                                                                            Only explanation I could come up with has something to do how water and matter behave in zero gravity. The big rings separate and create smaller bubbles/loops because of the outward force and their tendency to want to stay together.

                                                                                            • Austin Jolley
                                                                                              Austin Jolley  3 days back

                                                                                              I just subscribed, I wish i was subscribed much longer ago. I love this channel and this video is no exception. Thank you for the knowledge and the small pointer about persistence. I needed that. Keep up the videos and the education, I love it!!