Glow in the Dark Fluid Dynamics

  • Published: 22 November 2019
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    Today we're testing the non compressible nature of water and testing to see what happens when you remove all of the air from a bottle. When you shake the bottle, will it prevent the ink from mixing?

    Smarter Every Day, "Unmixing Color Machine" -

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    Music by:
    Johan Glössner - "Midnight Mover (Instrumental Version)"
    Dylan Joseph - "Let's Go Get Ice Cream"
    Håkan Eriksson - "Vintage Soap Theme 4 (Indie Rock Version)"
    Victor Olsson - "Blue Texas Trucker 2"
    Royalty Free Music from Epidemic Sound:


    This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Have fun, but always think ahead, and remember that every project you try is at YOUR OWN RISK.

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    THANK YOU!! ✌️👑

Comments • 832

  • Sharman Rosemond
    Sharman Rosemond  3 days back

    Should have tried just turning it upside down to see what would happen.or a perfectly symmetrical glass bottle

    • Тодор Стойков

      Can you mix aluminium and glass?

      • Sarvagya Srivastava
        Sarvagya Srivastava  2 weeks back

        It is mixing because water may not be compressible, but plastic bottle is expandable. Use glass bottle or something

        • life vs death
          life vs death  3 weeks back

          2020 baby

          • SolomonDragon
            SolomonDragon  4 weeks back

            They’ve done experiments like this with a centrifuge. The application would be for high velocity space travel

            • Addison Bebber
              Addison Bebber  1 months back

              What f you did this with a fish 🤔 not saying you should... but what if...

              • Cp7 Girl
                Cp7 Girl  1 months back

                the shape of the bottom of the bottle directly affects the water

                • Cp7 Girl
                  Cp7 Girl  1 months back

                  you are stup

                  • color your world
                    color your world  1 months back

                    For the up and down shaking "machine", you could have just turned the paint mixer on its side, then attached the bottle to 1 side of it with something like c-clamps or duct tape

                    • CongoBudd
                      CongoBudd  2 months back

                      Can you make a sawzall into the up and down shake machine? Might not be a perfect up and down motion but close enough

                      • Gloria Panda
                        Gloria Panda  2 months back

                        Who really want them to Freeze it???? Like if u want that or not your choice.😋

                        • Austin J
                          Austin J  2 months back

                          What happens to water in a vacuum

                          • Sam 1057
                            Sam 1057  2 months back

                            Maybe try injecting the highlighter ink into resign, and let it set up to, that way you can get a perpetual northern lights lamp. Something you guys can try?

                            • [GD] kryen 4
                              [GD] kryen 4  2 months back

                              There is nothing to induce chaotic motion so it wont mix well

                              • The BIULDS
                                The BIULDS  2 months back

                                Put like a ball or small rock in there to see if it moves with no air

                                • Killermonkey 838
                                  Killermonkey 838  2 months back

                                  At 2:11 Nate says just have as little water it it as possible

                                  • dbung .z
                                    dbung .z  2 months back

                                    You forgot to put a marble in it

                                    • Orisit
                                      Orisit  2 months back

                                      “So if you ever want to make the northern lights at home...”

                                      *laughs in Alaskan*

                                      • nuke herr
                                        nuke herr  2 months back

                                        You guys should hydro dip things with the highlighter thing like if u agree

                                        • Kitty Ewing
                                          Kitty Ewing  2 months back

                                          It looks like a sad little man at 2:43 before it’s shaken up

                                          • alax gallagher
                                            alax gallagher  2 months back

                                            I've made stuff from Grant's videos. He made stuff interesting and this might help but listen to the viewers and adapt to what they need.

                                            • Enzzo
                                              Enzzo  2 months back

                                              Frees it when the paint is in the water

                                              • Erin Connelly
                                                Erin Connelly  2 months back

                                                Please freeze it!!!

                                                • Youtube Acc
                                                  Youtube Acc  2 months back

                                                  Put it in a air vacuum

                                                  • A J
                                                    A J  2 months back

                                                    You injected a little air with the food color being pushed in. You could see air space at the end and air bubbles. There is probably small air bubbles in the water as well that are almost too small to see, but combined does still account for some air.

                                                    • Jule Knight
                                                      Jule Knight  2 months back

                                                      Combine highlighter ink with food coloring

                                                      • Hades2Eros
                                                        Hades2Eros  2 months back

                                                        If the container were flat on the top and bottom twisting and turning might not have the same effect

                                                        • fnaf_ gurl2
                                                          fnaf_ gurl2  2 months back

                                                          7:14 the water looked SSOOOOO PRETTY!!!

                                                          • Dustin Aldridge
                                                            Dustin Aldridge  2 months back

                                                            Miniature bungee jump for the bottle?

                                                            • Bushy Boi
                                                              Bushy Boi  2 months back

                                                              See this in 8 years when it gets recommended.

                                                              I made emojis

                                                              A E I O U Y
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                                                              • Expert Gaming
                                                                Expert Gaming  2 months back

                                                                2:10 wut???

                                                                • Adam Tafoya
                                                                  Adam Tafoya  2 months back

                                                                  Do you guys think that it could stay still long enough to maybe freeze it as clear ice like in the clear ice video?

                                                                  • Sydney Shyyoda
                                                                    Sydney Shyyoda  2 months back

                                                                    This might be really silly or already made but what if you put water into a vacuum chamber?

                                                                    • MrDarkBlace
                                                                      MrDarkBlace  2 months back

                                                                      Does the form of the bottle affect when twisting the bottle? Cause of some little water reservoir in the bulge.

                                                                      • THEGRIFFINTROLL GAMING AND VLOGS

                                                                        Hmm yes
                                                                        Nate: we need to try to have as little water as possible
                                                                        Edit: at like 2:09

                                                                        • Laural ローラル
                                                                          Laural ローラル  2 months back

                                                                          This is just a visual example of what happened when they tried to shake soda cans and did the tap test lol

                                                                          • Laural ローラル
                                                                            Laural ローラル  2 months back

                                                                            What happened to their gloves???? Why have they stopped wearing them?

                                                                            • WonderPlus5Gaming
                                                                              WonderPlus5Gaming  2 months back

                                                                              Use a saws all or jigsaw! For up down motion

                                                                              • Mayank Jariya
                                                                                Mayank Jariya  2 months back

                                                                                mythbusters did the plane on a treadmill trick.Its a bust plane takes off fine....

                                                                                • TheScottican
                                                                                  TheScottican  2 months back

                                                                                  Have to try the spinning again with a flat smooth bottle.

                                                                                  • TheScottican
                                                                                    TheScottican  2 months back

                                                                                    Then also with the inside of that bottle coated with hydrophobic spray.

                                                                                • Samantha Miller
                                                                                  Samantha Miller  2 months back

                                                                                  I just recently made a storm glass. I would love to see you guys make one.

                                                                                  • Go girl gamer
                                                                                    Go girl gamer  2 months back

                                                                                    2:09 Nate said as little WATER as possible... I thought it was supposed to be water with no air?

                                                                                    • Wrinky's Carnage crew, gold and silver

                                                                                      @king of random what if you put it in a ultrasonic water bath?

                                                                                      • Bidly bid
                                                                                        Bidly bid  2 months back

                                                                                        ⛔️🛑⛔️📛🚫⛔️🛑⭕️Wait I think the type of the bottle got it mixed can y’all use a different type of bottle that the bottom is just flat but not with these wavy shapes and spinn it

                                                                                        • FPSKoda4
                                                                                          FPSKoda4  2 months back

                                                                                          Hook up a row of tanks. empty and full connected to a pump and see which one gets filled/emptys first in a row

                                                                                          • mikebarnacle
                                                                                            mikebarnacle  2 months back

                                                                                            what immediately comes to mind when I think of linear reciprocating machines... wow I'm gross

                                                                                            • Michael Gonzalez
                                                                                              Michael Gonzalez  2 months back

                                                                                              Use glow stick activator and then use the glow stick liquid

                                                                                              • soldierboy airsoft
                                                                                                soldierboy airsoft  2 months back

                                                                                                Use 1 of the fair ground rides that go up and down (or use that for inspiration to make 1 of your own )