How to Make Low Pressures with a Capillary tube

[@destroyishere4655]

I have a feeling that he's slowly revealing his superpowers...

[@glaizasulim3611]

yes

[@TheRealGuywithoutaMustache]

If I were to be serious for once, I just wanted to say that your video ideas are always creative and fascinating.

[@EPBP]

Why are you here

[@Longshin777]

oh it's you

[@vinaythakur4742]

Mumbo is also is missing his Original moustache

[@CyanDumBell_MC]

where's your brother

[@الاسلامرمزالسلام]

👋👋👋👋👋

[@germenfer]

I must say that lower pressure sucks.

[@thejoker7902]

I am a strong man. but that thing ( *James's un-even mustache* ) it scares me.

[@MedEighty]

Okay, so I'm not the only one who noticed that.

[@error-dc2ox]

Hey! He can’t go to the barbers okay

[@xZangHD]

My handle bars screamed when I saw that

[@TheBaseCam]

Because it's not a moustache, it's what's controlling the main body you know as 'James'

[@pratikdas8328]

well, the meniscus are formed due to the adhesion forces and the surfacw tension of the liquid, which it was mentioned in the later part but when the meniscus was mentioned first time( in case of the capillary tube), it is not due to the pressure difference but due to same reasons stated above that's why water will always form a conclave meniscus with glass containers irrespective of any pressure difference

[@AmandeepSingh-qe4ok]

exactly what I'm thinking

[@chanakyasinha8046]

And mercury forms convex

[@sheetalagarwalla1241]

But again the minscus has that shape becuase of pascals law that force acting is perpendicular to fluids

[@brando3342]

Next video: "Honey! Now the neighbour is drinking from a ten meter long straw!"

[@lordpredator8855]

I think Veratasium made a video for trees and negative pressure. Very cool.

[@minercraftal]

Got this question when as a kid, no teacher or anyone answers me why, first time got the answers here, sounds new and right to me. Thank you.

[@n0nenone]

Finally, to understand capillary better than just theory from our SCHOOL teachers

[@alexandrudanciu7874]

This one was a proper explanation, finally. 👍

[@asemhisham3507]

Actually it was a very poor depiction of what really happens, the term relative pressure is only relative, and the entire explanation was lacking.

[@Eagles_Eye]

flatearthers : " THIS IS CGI! WATER ALWAYS FINDS ITS LEVEL!"

[@avarixzen6513]

am I the only one who feels like he repeats himself on every point like 5 times

[@stormtorch]

That's how he makes sure everyone understands, even the people who consider themselves unexperienced at the topic at hand.

[@TheBaseCam]

He's definitely teaching! And your definitely observant 😎

[@datbubby]

That just reinforces any un-sure viewers knowledge on the subject

[@superprabal]

It helps to grasp the points better.

[@alman8021]

longer videos get more money

[@R_BS-ug3ck]

He really should start another channel where he teaches actually interesting chemistry and/or physics classes for high school students

[@allenscenery]

Pressure is an emergent phenomena where molecules randomly colliding into one another at a microscopic scale. The natural question to ask is, what's going on at the microscopic scale for the negative pressure?

[@asemhisham3507]

The answer depends on your fundamental understanding of the term negative pressure, if it is understood as relative negative pressure then its essentially particles colliding just less frequently and with less kinetic energy compared to its surroundings. However if understood as negative pressure then unfortunately no such thing had been proven to exist.

[@chanakyasinha8046]

@@asemhisham3507 wht about negative volume

[@charleswells9682]

@@asemhisham3507 Theoretically, it may be possible in the realm of statistical thermodynamics, but only extremely locally and not at all on any macro scale. The caveat is however that the probability is so low as to be non-considerable. Thought conundrum: if all the molecules gather to one portion of a volume could the pressure elsewhere be less than what exists between the molecules natively? Of course, though, the question has no meaning.

[@troywhite6039]

Have you tried filling it until the capillary tube overflows but attaching another tube that feeds the overflow back into the large fill chamber. Would that cause a constant motion of it flowing into the fill chamber as it is pulled through the overflow tube via gravity and vaccum and capillary action forces all working in unison?

[@Andy_M.S.c]

wow that kind of blew my mind, now i must bother my prof during office hours and see what he says

[@phoenixamaranth]

That's a nice detail about the redwood trees and explains why they grow only in coastal regions and why they are so large in California where the mist off the ocean travels inland so far.

[@Horus2Osiris]

try Rain-x, make your glass surface hydrophobic, redo experiment, measure differential coefficient of friction via your change in miniscus... You get the drift.

[@driverjamescopeland]

This is the same principle used to create the "lighter-than-air" material known as Aerogel. Basically, it starts as just a block of amalgam, until the liquid is evaporated from the voids. Once the evaporation has taken place, the voids are so small, the air pressure within the matrix left behind is of a lower pressure (amd subsequently less mass) than the surrounding air... so the matrix itself actually 'weighs' less than than sum of its true mass.

[@NewbyTon]

Thank, now i know how make below 0 absolute presure vacum

[@alexei4204]

Instead of glass, if you used a more hydrophilic material for the tubing (e.g. wood) would it pull the water up more? The reason I ask that is because the interface between water and any other material always creates a type of meniscus of some thickness which varies in size depending on how hydrophobic or hydrophilic the material is. The meniscus doesn't just happen between water and air although by definition the interface between water and air is given the term 'meniscus.' I'd be curious to see this experiment repeated with wooden tubing. :)

[@Avengers24-sw7cv]

The flat earthers should watch this, just so that they can see that water finds separate levels.

[@enoch7thadam1st2]

I can already see it: you have not thought about your comment properly. pity. look back and go to nature and see why it is possible what you see. because you think you can see but you only see what you want to see.. I do no reply.

[@SuperPrDude]

Read my mind.

[@biologicallyawptimized]

Flat earther's have already done their own experiments to prove the earth is round and have thrown out their own evidence. While this is a great proof against their argument, sadly they are doing science backwards. They already have their answer, now they need to find evidence to support it.

[@cousinles80]

If you kept pouring it would the small tube overflow? If so could you run it back into the big tube and have a perpetual machine?

[@Reuben-John]

Water displays apparent "antigravity" properties all the time. Just think blotting paper or a drop of water hanging from a tap. Nothing to do with air pressures at all but just reminding us that molecular attractive forces can be much stronger than gravity. Air pressure is only relevant if we try to draw water up a pipe that is not open ended. As far as very tall trees are concerned I'm sure I read somewhere the extra lift beyond capilliary action and evaporative "suction" is achieved through a series of open and closed valves in the trees structure. I love your vacuum experiments and watch them regularly. Can you try this in your vacuum chamber - I'm keen to see the results.

[@MammaOVlogs]

wow way cool, good thing straws aren't that long :)

[@Thrustql]

*He knows how get much views* (lol) Me: *Watching in my recommended* The Actionlab: *How Make A Pressure Lower Than Absolute Zero Vacuum* me: HMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM..THE THE TITLE VERY TASTY And thats how i got here

[@gogo311]

That part about redwood trees was so cool! I had no idea.

[@anilsharma-ev2my]

Bending the capillary will make some running Or siphoning will give some motion once it's starting Try this

[@conswizzy710]

with all the negative comments that exist on KZbin, here is a positive one for you. You are awesome!

[@TheChemicalWorkshop]

After launching i was like, wait, didnt veritasium cover this? Great video !

[@MarkWadsworthYPP]

As I watched it, I kept thinking of veritas' tree video. Your explanation is simpler but better. Well done!

[@oliverracz8092]

Thanks for dyeing the water!

[@lyn7591]

Scientist: publishes law of science Action lab:im About to end this man's whole career

[@amarafray5431]

Archlyn 186 I can’t say how accurate this is

[@MM-np4nm]

The shape of the meniscus is caused by the wetting angle or the hydrophilicity of the glass capillary. With mercury the contact angle would be much larger.

[@halimuh110]

8:10 he has an uneven mustache🤪

[@h7opolo]

i love this presentation of yours showing the capillary action phenomenon.

[@sreelalithakaturi5814]

Hi action lab 👋 i liv ur vids .. ur my inspiration and bcuz of u I was interested in science..U were the reason I decided to become an astrophysicist Im stil 15 tho... Hope u read and comment this(comment optional) Btw it says actionlab is closed! On ur store.. I really want to buy some stuff so can u open it again ... I am from India. Salute and hatsoff to u 😎😎😁😁😁😁😁👏👏👏👏👌👌👌

[@nayankondapalli1075]

Just know that unfortunately, a straw cannot be longer than 30 feet. My dreams have been killed.

[@mpred8606]

it can if there's already water inside of it since the beginning like how trees work although that means you d akready have water in your mouth so..... edit: oh it was already mentioned in the video

[@alexandrudanciu7874]

@@mpred8606, no... doesn't work... After about ten meters, whatever force you use to suck in, the liquid will not go up.

[@DuelJ007]

It sounds like the ten meters is only a vertical limit.

[@cliveadams7629]

@@mpred8606 Nope. Around 30' is the limit of water head at sea level. Doesn't matter if there's more than 30' water in the tube or you have a mouth full of water before you raise it vertical, air pressure can only support a column of water around 30' high and so it would fall leaving a partial vacuum above it. Capilliary action is a force generated between the liquid and the tube wall, surface tension limits the height the liquid can rise and the greater the diameter of the tube the less the surface tension can support a column of liquid under it. No negative atmospheric pressure there.

[@mpred8606]

@@alexandrudanciu7874 no I mean it wont work what I am saying is how like the trees from beggineng bassicaly have straws that get longer and longer it doesn't get stuck at 10m because there's no air ti cause tha liquid inside to boil its bassicaly in a super vaccum

[@motioninmind6015]

Love it :) Wondering about the effect if the contraption was made of a hydrophobic material. I think it might be the opposite (?)

[@MichaelELambert]

Depending upon the size of the tube will yield the pressure of the liquid! The larger the tube, the lower the pressure. The smaller the tube, the higher the pressure! Ranging from small to large in the tubes would be 2, 3,4, then 1, being the largest in size and 2 being the smallest, not counting the horizontal chamber connecting the vertical tubes! If the tubes were equal in size, then the pressure would be evenly distributed!

[@sebbes333]

*@The Action Lab* 3:50 -ish. So if I would make like a 10 meter long garden hose, filled with some optimal material (like graphene tubes or something?) then I could lift water 10 meter straight up without investing any energy? Can't be right, that would violate the laws of physics? (conservation of energy or something). It would mean that I could take a mine shaft, lift the water 10 meters, pour it into a pool & repeat the lifting forever. I could theoretically lift it into space? FOR FREE??? Can't be right? That would create perpetual motion engines! Can't be right? But also, trees use this I think, in their stem to lift water? *WHERE DOES THE ENERGY COME FROM?!!*

[@sebbes333]

"He screams, as he slowly descend into madness..."

[@stevesloan6775]

Awesome! As a kid I loved the Egyptian water level. As an adult I used it for a massive decking project to set all the uprights in concrete. It would be cool if the Egyptians actually used that type of levelling system. It might well explain a thing or two. 🇦🇺🤜🏼🤛🏼🇦🇺🤓🐇🍀

[@MuhammadDaudkhanTV100]

Woo super nice experiment

[@anjangaire6262]

Wonderful analogy

[@chinmaykalkeri]

Loved this video, loved the veritasium video as well, thanks dude.

[@MeFreeBee]

Try the same experiment but using tubes made of teflon or some other hydrophobic material.

[@Hablizel]

This is one of you most fascinating videos. (I never realized how geeky I was).

[@johnm5928]

This was one of your best videos man. Thanks for posting!

[@injesusname3732]

i think its surface tension, not pressure

[@wilgarcia1]

of course my mind immediately wants to know if you can make the skinny path pour back in to the large one perpetually =P

[@mtnman7776]

Another great informative video and, THANKS for no distracting background music.

[@maxsanchez4256]

HUH. So... ever- flowing heron's fountain may be possible? maybe if the smallest tube was curved to feed into the big fountain it would flow on its own until it evaporates?

[@maksimgriskevic5446]

I’m so sad that you don’t make a lot of videos I just find them so fascinating

[@paul_artz]

Can u make a infinity water loop with this stuff

[@shivarajdolli5383]

In trees not only the capillary force that help in taking above but the adhesive force also helps in that

[@loyki7076]

Awesome video!!! Keep continue And most importartly... Stay safe

[@adriangaleron3293]

Hey, nice video again, I like your channel for so long. Some people from abroad US can't fully understand you, and subtitles aren't very accurate, so when you mention the inspiration for your videos, like veritasium in this one, or Tom Scott in the last week "video about lasers" , some people won't really realize it. It would seem more fair to put a link in the screen. Thanks

[@JoeytheJaguar_Lewcock]

The force is strong in this one

[@jacobrollins37]

This makes me want to believe perpetual power is possible. If only thermal dynamics stayed out of the way.

[@triadxtechnologies]

What happens when the glass in a capillary is coated in a hydrophobic material? The capillary effect would not longer work, correct? If that is the case, then materials that are more hydrophilic than glass should produce an even more dramatic effect?

[@FrozenFox20]

So if the capillary force makes the water level rise higher than the other water level what keeps you from flowing the water from the capillary tube to the other one to get perpetual motion?

[@AlexandruCzimbor]

Hello!! Great video!!

[@DANGJOS]

@The Action Lab Wow cool thanks! After I first learned about hydrostatic pressure, it always bothered me how water could push down on the water below while adhering to the side in extremely thin tubes. This explains that quite nicely!

[@SundeepKP]

Hey action lab, here's a idea for your next video,"try keeping water in a vacuum chamber and dipping the vacuum chamber in LN2". Please try it!

[@kelvinnueveanimeguitar1983]

What if I cut the 2nd tube (highest) A little bit below it's highest water level so it starts to flow out and connect it back such that it flows to the 1st tube (biggest) Would that mean it would keep flowing?

[@onradioactivewaves]

5:36 " absolute relative pressure "😅

[@dogwalker666]

I missed that first time well caught!

[@-30h-work-week]

The only useful thing I got from this video is that it reminded me to water my house plant. Thanks!

[@Its.Solitare]

If he can do this at home Imagine what he can do in a laboratory

[@jonobjornholm]

By embracing the dark side of the force

[@pedrobluis]

Talking about negative pressure (omitting the RELATIVE) will get flat earthers pumping!

[@frostgamer8371]

You do the coolest things

[@ketanmorajker]

Just amazing example 👌🏻

[@xiaoshen194]

Will try this on IIT aspirants.... at least it woul reduce some stress on them.

[@ntanimates9523]

How does come up with soo many ideas mann he would be the perfect partner for a science fair

[@uzairm3816]

I was about to say this reminds me of Veritasium's video, and you mentioned it

[@CyanDumBell_MC]

Magic is undiscovered science

[@Michael-mq5er]

I have a question, if a black hole suck into it everything with mass, and if you placed a small black hole a question, if a black hole suck into it everything with mass, and if you placed a small black hole on earth it would suck in the earth as well as the air since it has mass, if it did what would be left except for the black hole if everything got sucked in?

[@mddelman]

Very informative video, thanks. Do you have time to answer a question for me? I have a small vessel filled with water. A thin tube (1.5mm inner diameter) hangs an arbitrary distance below the surface and the top is attached to a valve that allows me to release ink into the water. When the valve is open, ink flows freely. When I close the valve, a vacuum is created at the top of the tube, so the flow of ink stops. However, through what I assume is capillary action, water from the vessel is pulled into the tube, apparently displacing ink, which then leaks into the vessel. This continues until all of the ink in the tube has leaked out. My question is, is there any way to prevent this leakage from happening? I cannot change the viscosity of either the ink or the water. The tube could be modified if that would help, but not to the extent of using a much larger diameter tube. I hope you find this question interesting and I'd be most appreciative if you can answer it. Thanks very much!

[@thebaddestogre-3698]

Now make a perpetual motion flow of liquid using capillary action!

[@linecraftman3907]

It'll level out eventually no matter how hard you try

[@thebaddestogre-3698]

@@linecraftman3907 perpetual motion is impossible, It was a little humor.

[@stomoxe1]

Perpetual motion ? see the test : the liquide stop to mount... kzbin.info/www/bejne/kJuVlJmfnamlprc

[@dumbcat]

@@stomoxe1 i don't get it. can you explain?

[@chanakyasinha8046]

Meniscus are related to intermolecular forces between vessel and fluid... Cohesive interaction

[@enoch7thadam1st2]

an era that explains everything that is true with senseless ideas about what can be true. that is why this world hates the truth above their own opinions

[@PlayNowWorkLater]

This seems like it’s borderline hovering in the realm of a perpetual motion machine. If the capillary tube, which has the highest elevation could somehow be directed back to the wider source tube. I’m guessing there is something in the physics about that distance you mention, especially showing how it retained that distance in the capillary tube after draining it. Just a thought, if the capillary tube had bends in it, would the liquid travel the same distance, or match the height from the previous experiment?

[@preeyashivu1292]

I believe the action what you are saying is totally different I believe this has to do with the volume of water rather than the capillary action and other forces. We all know that when the water water body is connected by a pipe it balances out in equal pressure. in case of the equal pressure exerted over the surface area the capillary tube has the least surface area which means more pressure over the least surface area this cause liquid rises up above the atmospheric pressure line stated by the original reserve line. I think it is the reason behind this experiment.

[@Boda.Attila]

Interesting content as always. Thumbs UP.

[@davidprock904]

At 1:23 the capillary type tube, when he pulls his flat earth positioned hand back towards himself, it make the water level jump around,... back to watching, i haven't finished the video yet

[@THEBATMAN28AHH]

Hey Action Lab, one topic i know that's highly debated is how to clean a vinyl record. Some argue expensive machines, and others argue good ol' elbow grease. Think you can put this question to rest? How can we effectively clean a filthy record???

[@nitrouspeed3583]

Anyone wondering what if the thin glass were bent & poured into the big one?

[@theninthab]

I was waiting for someone to say that

[@realflow100]

Make enough of them connect together to form a drip that can fall!!!!!!

[@melonenlord2723]

Me too, but i think the capillar effect and surface tension would hold the drop together, so it can't drop. The force that is needed to overcome the effect will cancel out the gain of potential energy from the water height difference. But its only a guess. ^^

[@jordanbwalt]

@@melonenlord2723 Either way, it's definitely impossible, at least infinitely, as that would be over 100% efficiency, and we'd be using it for free energy.

[@dumbcat]

@@jordanbwalt humans know very little about the world around us, yet we are so arrogant we make up 'rules' that prevent others from questioning

[@ImpMarsSnickers]

Can you make this way water to flow continuously? Like including fabrick to suck water and drop it in a larger section?

[@FaZeDaruing]

I Want Him To Be My Science Teacher 😂

[@abhijeetnanda9624]

what is exactly adhesive force

[@ektaagarwal9288]

Please upload a video of stress strain curve doing an experiment ....

[@calistojupiter6418]

Awesome explanation ♥️👏👏👏

[@jackdergamer1870]

Cool video!

[@ThatTimeTheThingHappened]

Delayed thought: could you melt and turn that capillary to make it pour back into the lower to create and infinite siphon pump?

[@Phosphene_Dr3am]

I wonder what would happen/ what it would look like if the inner walls of the glass had some kind of a hydrophobic coating on them and you tried this...🧐

[@mariodistefano2973]

You where talking of the capillary force for water. But if you put liquid mercury, instead of water, would we Have the same behavior? Mercury won't stick to the glass wall, so I suspect we would have the reverse behavior, isn't it?

[@ArkStar20]

Can perpetual motion be used using this method?

[@JohnDlugosz]

straw vs tree: I think that's not right. A straw is limited because if you remove the air from the top you still have the weight of the water acting against the weight of the atmosphere. Capillary action will work even without an atmosphere.

[@donut965]

my new science teacher while on quarantine 😂😂

[@paulk5670]

Be very careful accepting what's shown here without a critical mind. As has been pointed out elsewhere there are fundamental flaws in the explanation.

[@fortisrisuspater]

Can you make a video on how to make a home made barometer for kids?

[@prashantkhatri5383]

I don't think thats the reason for the meniscus..water will always form that type of meniscus and the curvature of that will depend on the diameter of the tube. To verify this experiment we should try it with mercury since it is know to form exactly opposite meniscus

[@MARKE911]

Where did you get that piece of glassware? That would be nice to have on my desk to explain