Why Do Some Liquids Flow Up? The Mysteries of Shear-Thinning Fluids

[@RobertPearsonJr]

"you'll just get a bunch of math, which doesn't actually explain why it happens" -- most intuitive quote ever.

[@Alfred-Neuman]

Yeah math is so dumb, why are we even using it?

[@TheDutchMagicTeacher]

Please dont work with better help, they have on multiple occasions sold data and conversations between users and therapists to advertisers like facebook while users assumed that would be kept confidential.

[@jbragg33]

He doesn't care. He's worked with them in the past, got comments and doing it again. He gives 0 f**ks.

[@StephenMcGregor1986]

As someone receiving DBT counseling through our Australian health care system this seems abhorrent in comparison. Apparently by 2027 we are getting Medicare funded, bulk billed, walk-in psychiatrists too. What the hell do they do with your taxes over there?

[@rebelli65]

@StephenMcGregor1986 aircraft carriers

[@AdmiralJT]

​@@rebelli65😂 And send it to Ukraine

[@Alfred-Neuman]

Do you really think this guy cares if they sell your "data" ? 🤣

[@CommanderConeHead]

I hope your better help contract ends soon only reason i could imagine you still sponsoring this company

[@novicereloader]

One of your best episodes. You're excellent at explaining technical concepts in layman's terms. When people with your gift include some historical or cultural information, as well, it really makes the concepts memorable.

[@flaym.]

> "Tubeless siphon effect" > Look inside > Tubes

[@ProgWork1]

Yeah, a siphon-effectless, pumped flow honestly

[@Qermaq]

The internet is a system of tubes.

[@VR46Monster]

less does not mean NONE but less :D stainless isnt rust proof, it just rusts less... and tubeless could be... 1large tube less :D

[@ProgWork1]

@@VR46Monster ok, I'll go with "tube-ish siphonless eff-is-happening" then 😝

[@LeonBlack666]

If you need help, better find better help than betterbelp, and one that isn't expensive at that

[@Lowtempdabs5523]

Betterhelp is full of non-MDs. A bipolar person like me would get no benefit from betterhelp lol I had to call my insurance to find somebody qualified. If u need mental help, don’t go to betterhelp. And if ur problems are so minor that betterhelp can be relevant, might as well just go jogging and drink a fresh smoothie😂

[@crusher9z9]

isn't better health getting sued for extremely aggressive anti subscription cancelation website design and policies?

[@sheikneedles9250]

Virtually no counselors are MDs lol. Not defending Better Help but that's just not what counseling is

[@Gengh13]

It doesn't seem to be a good company but not having MDs would be a positive thing, considering the last 4 years.

[@stancil83]

You don't really need a doctrine for a field as benign as talk therapy, as therapists don't dispense medication or even much advice. Think of it as a handrail-they’re just there for minor support so you can handle the rest. I don't know much about BetterHelp, so this isn’t a defense of them. But from what I can tell, it's essentially for people who need someone to talk to. With that narrow focus in mind, I can see how it might help some people. Might is the key word in that sentence. I can see a future where AI could possibly handle this. Maybe Betterhelp won't be around for long. Judging from their reputation without Betterhelp you can get better help.

[@zinczombie]

​@@stancil83 Therapists are in no way comparable to a handrail. It's closer to a spine brace or something to help you actually function, as bad therapy advice can be more damaging than no therapy at all. They need to know what they're talking about

[@JollyTVance]

Great timing. Just sat down to poop and this shows up

[@roccov1972]

😅

[@OhRelaxAlex]

You too???

[@bones9694]

bro what me too

[@wegankpvp5736]

No way same

[@Literature-ft8ru]

This is modern day bathroom news paper content

[@oliviervancantfort5327]

For information, visco-elastic properties are generally determined by sending oscillations to the submerged rod (or to two plates with the fluid in between) and measuring force vs movement of the rod. If the tested product is elastic, the force is proportional to displacement, while if it is viscous, the force is proportional to velocity (ie derivative of displacement). So, if you plot force vs displacement, oscillations are in phase for elastic , out of phase by 90° for viscous and in between for viscous-elastic. Varying the force can give you the shear thinning properties if any and varying the frequency will give you the time dependency (visco-elastic fluid will be elastic at high frequencies because the long molecules don't have the time to rearrange and viscous at low frequencies)

[@danabtw2877]

And here we go again with better help

[@nicholas4839]

I know right

[@drakonyanazkar]

That showcasing of fluid behavior in rocks at the end was perfect. I had been noticing things like that recently, but have it show up right beside a Debra explanation added another layer of understanding for me.

[@mikeyc8139]

Every time I think one of your videos isn't a subject I'm interested in, I click on it anyway and I'm always surprised how interesting it is!

[@mattp422]

So if you’re sailing on a non-Newtonian ocean, a whirlpool will elevate your ship into the air. What a cool idea for an amusement park ride.

[@decreasing_entropy3003]

You didn't come up with this idea sober(and I'm definitely stealing it)!

[@microbaystudio6353]

You could fill up a pool with PEG put a raft on it, put a motor underneath the raft, and attach bungee cord to the raft then start the motor and I will call the world pool and go up in the air

[@mattp422]

@@decreasing_entropy3003 Be my guest. Just invite me when it’s open to the public.

[@fluffsquirrel]

Would extra liquid like rain or some contaminant affect the properties of this liquid to the point where it has to be fully replaced? I'm curious as to how expensive and reliable this is, although it's an awesome-sounding park idea!

[@geirmyrvagnes8718]

Idea: Demo of how extremely tall trees can move water from the roots to the very top, when it should be "impossible" over about 10 meters (wingspan of 5 adult bald eagles).

[@jhoughjr1]

American units!

[@FoxDog1080]

Americans

[@jsjs6751]

​@@jhoughjr1 Those are American bald eagles. 😅

[@jsjs6751]

The tree is not "sucking" all the way from the top. It is happening all along the "pipe", and therefore the 5 adult bald eagles' wingspan is not a limit.

[@osensiv3sounds978]

Finally someone speaks my numbers

[@dsp4392]

The PEG "siphoning" itself out of the cup is basically Steve Mould's chain thing at a molecular level.

[@bvancleave77]

I miss your content. I haven't seen it in a while

[@MAliincontinencelife]

Looks cool.

[@sebastiand152]

1:24 The drawn extension does not show ethylen groups but methylen. These structures would release formaldehyd, when such oligomers were dissolved in water.

[@AndyBrooks]

Your videos have consistently been awesome 👍

[@ahabsbane]

It would be interesting to see what a high quality stiring machine and bar would look like. Seems like your machine/bar were jumping around a bit. Maybe it's just the bar lagging because of the viscosity, then suddenly catching up, but I'm picturing a setup with stronger and more precisely aligned magnets. Im willing to bet you could get a tornado going!

[@b.s.7693]

Can you please explain why you can slurp up a spaghetti? Actually, that shouldn't be possible, since the atmospheric pressure can only "push" on the end of the spaghetti, but then it would simply bend?! Why is it going up into your mouth?!

[@BenAlternate-zf9nr]

In this case, short timescales make the liquid act somewhat like a solid, but also short timescales can makes solids act like liquids. For example, in hypervelocity impacts, the solid material "splashes" out of the crater like a liquid would.

[@0neIntangible]

In some of the shots shown here, it appeared the PEG had either trapped air bubbles, and/or glitter flakes added for visual effects.

[@fahdneutron]

8:49 thank yooouuuuuu sooooooooo muchhhhhhhhhhhhh bro 💙💙

[@LastGoatKnight]

The replusive (blue) gel is probably similar in Portal 2. It looks bouncy to me😅

[@Fahmi4869]

8:23 Finally, solid water

[@rodmills4071]

Didn't expect you to get philosophical at the end....😄😃😀🇦🇺

[@TheGavameck]

I don't get why people hate both the KZbinr and the company they are sponsoring. If you hate the sponsored company it should have nothing to do with the KZbin channel. Maybe they like the company. Maybe they are advertising for another reason. That shouldn't concern you unless you are watching the video for the sponsoring.

[@The_Soul_King]

Wow, didn't expect to see peg on your channel, I really love peg !

[@dahahaka]

Some good ol pegging

[@jacobopstad5483]

Watching the stir bar and the PEG bulging in the center reminded me of galaxies and how mass tends to fall to the center. I wonder if that's a good analogy. Do spinning galaxies move like non-Newtonian fluids?

[@tarille1043]

Not as such. Non-Newtonian fluids work based on elasticity between molecules, which allows them to defy gravity (Up to a point). Galaxies are entirely about gravitational forces interacting on things (With the compounding effect of increased density of mass providing more gravitational pull). The interaction of non-newtonian fluids would function differently without gravity, creating a different overall shape (More like the sideways bar in the slime - With the fluid extending in both directions) rather than the typical "Disc with a bulge in the centre" shape that galaxies often form.

[@LexipMedia]

Action Lab: you are incorrect about the method of action of PEG-3350 (Miralax) as a laxative. It is not the fact it is slippery, but what Wikipedia says: [Miralax] is an osmotically acting laxative; that is, an inert substance that passes through the gut without being absorbed into the body. It relieves constipation because it causes water to be retained in the bowel instead of being absorbed into the body. This increases the water content and volume of the stools in the bowel.

[@MrHichammohsen1]

This is the same as a birkeland current tube! Can you do a video on that please?

[@cadthunkin]

Seems like a lot of things behave this way - molton glass, dough.... The older of the audience always suspected something was diabolical about PEG. You are told to drink like a gallon of it in an hour the night before you get a you-know-what. So its got some real interesting effects indeed.

[@valeckseimu3132]

As an italian I can say that those spaghetti were cooked wrong😂 In Italy spaghetti has Newtonian liquid proprerty

[@budboggy4699]

As usual, you provided a demonstration of a fascinating and unusual scientific principle, thank you very much for that. Sadly, any recommendations you make for purchases, I'll ignore. Ever since you shilled for the thieving land buy in Scotland, and similar deceptions, everything you recommend to me is a warning for me to ignore.

[@kipve]

I want to know what happens when you try to scoop it with a spoon, would it just be impossible?

[@NousSpeak]

I wonder if stuff like that ever happens in galaxies or with space time distortions under extreme gravity or something.

[@KrishnavyshakR]

Who predicted it is Polyethylene Glycol?!

[@mahenmahen6771]

idk bruh

[@valverlet2793]

Bro is the GOAT we forgot in history books

[@greatclantoni]

✋

[@damnwereinatightspot]

@@valverlet2793 ?goat?

[@westonding8953]

His self flowing liquid experiment!

[@pauljs75]

Yet there are some old cool-mist humidifiers that have used the Weissenberg effect with water. So I'm guessing the spinning part is slightly conical in that case?

[@YourLifeWasting]

i could see this being a super power in big hero 6

[@jlco]

Making a laxative using lubricant sounds like Aperture making a dieting gel that bounces the food out of your mouth.

[@OskarPuzzle]

Can you do the Mould effect with this liquid?

[@OryxGuitar]

This is the first time I saw this in my whole life and I am intrigued. May I ask some related questions please? Does the PEG you use here have high viscosity? Is Viscosity the reason it is doing the self syphoning? Does oil with high viscosity have the same self syphoning effect as PEG? Thank you very much!

[@vanonderen9702]

that seems like the unending movement is confirmed with this liquid :O

[@TwoTeaTee]

Last few lines, what a takeaway!

[@mssm9495]

Brilliant video! So much amazing stuff in such a short time.

[@PrincipalAudio]

On the subject of laxatives, the best one I've found is methylsulfonylmethane ("MSM" for short). Half a gram of that in your meal and you'll be off like a rocket the next day!

[@NobbsAndVagene]

Why aren't you sponsored by something like Brilliant instead? At least that fits with the theme of the channel.

[@platzhalter2581]

Beware of The Blob, it creeps And leaps and glides and slides Across the floor Right through the door And all around the wall A splotch, a blotch Be careful of The Blob...

[@damnwereinatightspot]

LOL ... I first thought it was the movie.... The Blob.... now im listening to it 1958

[@Faizan29353]

So we Get A super critical State with Liquid and Gases Boundary (like Dry Ice in which Things can just float in the middle, nor sink nor rise) Liquid Bending Happening at "Liquid - Solid Boundary" What is the (gas-plasma), Do they glow? like Neon? Argon near electricity? Among other cool things matter does such as when it's a magnet, a liquid magnet (or conductor I forgot what Ferrofluid is) and Super Conductors are cool (literally sometimes) Can Anyone Suggest Some More States of Matter and Cool phenomenon like this

[@Sameerfuego]

Try keeping a perfume on a plate in the vacuum chamber.

[@sesgiog]

Got to love the PEG molecole.

[@jonrod8731]

Do a film on tinnitus & a cure for it.

[@TtoP_Science]

sir explain me this i have a container of water and when i take my finger above the water container a shadow appears inside the container's bottom till here its fine but when i just touch the surface (not dipping it in just touching the surface) my shadow of the finger that was the bottom of the container disappears and when my finger is moved down from the surface of water the shadow re-appears now where did the shadow go in between explain the whole mechanism

[@aledirksen01]

so would there be an in between mix of water and polyethelyn glycon that would leave the surface perfectly flat? where the downward spiral of water cancels out the upward spiral of polyethelyn glycon

[@mrbergchemistry]

or maybe a perfect intermediate chain length. Try it with Miralax!

[@jackbauer123321]

Al dente crew is steaming rn

[@niczoom]

Interesting! Great video and well explained.

[@TiagoFilipeCabral]

I have a question that i believe can only be answered with an experiment: If we have a long enough tube full of really cold water but with a really strong heat source on the bottom that can cause the water to boil and turn into vapor will the bubbles condensate back into water before reaching the surface? i am guessing that given a long enough tube that will occur but how long? preferentially not bubbles the size of the ones you see on sodas or electrolysis... i guess i just wanted to see a really big bubble get smaller and smaller until it disappeared... Also... will the heat spread more efficiently through water if it doesn't get past the boiling point? i am guessing the heat inside bubbles wont make contact with the water around so maybe it's not optimal for heat spread... not to mention that past the boiling point it just turns into vapor and goes away so the system loses more energy that way...

[@tarille1043]

Yes, the bubbles will condensate back into water before reaching the surface provided there is enough distance for them to be cooled below the state change temperature. The main issue with such an experiment would be trying to create such a setup in the first place. Given the very high heat capacity of water making it difficult to increase the temperature of, you will most likely cause the entire vessel full of water to increase in temperature thus you wouldn't encounter any potential cooling effect. You'd be better off with some liquid that has a much lower boiling temperature and heat capacity that can come in contact with a very high heat and instantly boil without affecting the entire body of liquid (So the liquid not in contact with the heat source remains cool)

[@TiagoFilipeCabral]

@tarille1043 i suppose we can heat water on a second container and force the steam into the bottom of the tube with really cold water using a release valve... I think it may not be that complicated afterall, i recon even i can do it but probably no one would see it x)

[@metern]

That magnetic stirrer had so much trouble spinning on that liquid 😁. You can see it changing speeds.

[@DizzyTrendermen]

So, I know perpetual motion isn’t possible, but what exactly is preventing this from creating perpetual motion? If I had to make a guess it’s probably something to do with momentum and this would just eventually stop flowing but I’m not entirely sure.

[@KalashKat]

Talk about getting plastics in your system! PEG is very dangerous.

[@Gefionius]

Awesome!

[@AlexIstrate_Ro]

0:35 Molecular Steve Mould effect?

[@fariesz6786]

no joke, i saw the video, my eyes read Action Lab but my brain read Steve Mould xD

[@herneheim]

what would happend if you stir it in a bowl with both water and this polymer, will it just mix or will you get one vortex going up and one going down at the same time under it?

[@mrbergchemistry]

The examples he showed *are* the polymer mixed with water. The water gets caught up in the polymer matrix (hydrogen-bonding, etc) and the fluid is a homogenous mixture of the two. He included the water molecules in the drawing early on, but left them out of the subsequent pictures.

[@herneheim]

@@mrbergchemistry would that be the case even if the liquid is saturated and not taking up any more water?

[@timothyjarman2308]

The steve mould effect

[@Windows98-SE]

Woahh so cool! Imagine if you drank it and titled yourself and it poured itself out!

[@austin.england]

Watching before the Mark Rober and Mr. Beast videos.

[@ethantemple8068]

I know you gotta get that bag and have seen the comments about better help but I honestly would like to see a different advertisement that doesn’t hurt people. Even raid shadow legends is better.

[@jovanshelomo]

You missed the opportunity to also explain about pitch drop

[@feelingzhakkaas]

Amazing

[@realDonaldMcElvy]

Shoutout to the Deborah Number!!! The mountains melted from before the LORD, Even that Sinai from before the LORD God of Israel. - Judges 5:5 KJV

[@uattias]

Didn't you make a video of this before?

[@adadinthelifeofacyclist]

A one-tonne mol, that's insane!!

[@Rygar777_]

If you're gonna advertise better health, you better let everyone know they sell your information.

[@mahenmahen6771]

yooooo that's cool

[@eval_is_evil]

Similar if you dillute hair gel just right.

[@toohip]

time to do a video on Helium3... you'll just need a bigger studio and budget.

[@kolakeshobha4829]

You can make longer greedy cup How Using cold temperatures from 0C to -196C (liquid nitrogen) to make vapor of water into liquid

[@subhranshushekharpatra7198]

Hello sir, is it possible to evacuate all the radiations(photons)out of a chamber to make it's inside absolute nothing? As we can evacuate all the air to make vacuum . ,in vacuum we can't say there is nothing because there are radiation in that sapce. So i was wondering if it is possible to clear a region of space anywhere in the universe so that in that space there will be neither any matter nor any radiation,and make it absolute zero

[@MBato89]

so basically has a higher surface tension

[@wolfbushcraft3369]

Poland mentioned

[@BobbyMasteria]

4:05 SAY MY NAME

[@Alasdair-Morrison]

Maths explains everything

[@mika34653]

This is the drink

[@beachboardfan9544]

🤔 The fabric of the universe does this around large object right? Frame dragging I believe its called, does that mean the universe is more like a non newtonian fluid?

[@lubricatedgoat]

Nice thoughtful question.

[@adayinthelife5496]

I wonder if the Deborah number has any applications in Astrophysics.

[@Nikninjathebest]

imagine a reality tv show where they have a person live their entire life where water acts like this liquid and then one day bringing this person to real life where water actrs like water and seeing their reaction.... (obviously we shouldnt do this irl lol)

[@lerinowstudios]

Dr. Pepper Shirt is da best

[@roberthoffman4713]

I guess that's why after taking that stuff you can't stop going, it just keeps flowing until it gone. LOL

[@Susandwyer]

What would it be like to swim in?

[@leonsoviac5380]

What was concentration and MW (molecular weight) of used by you poly(ethylene glycol)?

[@lsdzheeusi]

brilliant analogies!

[@maxpayne216]

The end story about Deborah sounds like Macosko maybe? This demonstration really makes me want to finish that Rheology book and know more!!!

[@netbrood]

I'll call electroboom on you bc you made an infinite generator with the self pouring peg

[@stevenking9985]

Do they boil when they get to the top ?

[@GeoffryGifari]

What would happen to a *shear-thickening* fluid if a spinning rod is inserted in it?

[@Totalinternalreflection]

If you have cornflour and an electric drill, you can try to find out yourself.

[@alexandern.9666]

"this fluid can relieve constipation"

[@paulh2981]

I'm really glad it's blue rather than geeen Come on, you were thinking it too

[@1.4142]

The rock only flow under heat and pressure

[@Lampyboi]

anybody know what the book he's showing at 4:40 is?

[@TheActionLab]

Transport Phenomena By Bird, Stewart and Lightfoot. The best textbook out there for mass transfer, heat transfer and momentum transfer (fluid mechanics)