Weird quirk of hydrostatic pressure

[@Soren_Swanson]

Wow! Ive never seen a loop so well done!

[@KnowArt]

thanks!

[@Jakala2257]

It's Brillant

[@teitgenengineering]

Yes and its also a good short

[@ColdStinko]

I can see a slight jump “ver very slight” but you have to focus hard

[@docteurtnt736]

@@Jakala2257pun understood and appreciated

[@dmlsjsjsidishde]

putting the brilliant logo there was BRILLIANT!

[@GAMERDUDE-pog]

Yeah

[@Boldpancake4]

?

[@eksboks148]

That was cool but it's not obvious that this is sponsored because many people might miss the tag at the bottom of the video so idk how well that might fly

[@rachel705]

@@eksboks148 As long as the tag is there it’s fine. At least in the U.S. (where youtube is based)

[@_nahwhat]

​@@rachel705 I don't live in the US and I see it so I'm pretty sure it shows everywhere

[@DaKing08]

that subtle sponsorship was brilliant

[@ryku2603]

This subtle comment was punny

[@cosmickanbi]

​@@ryku2603this subtle pun is brilliant!

[@harimg9942]

Punseption

[@husnenbutt7867]

?

[@rajeshe5279]

​@@cosmickanbiThe subtle brilliance is sponsored.

[@josemarigarciamorillo9814]

The phrase “the water on the sides can’t weight down the middle” is actually misleading. It makes one think that pressure in a point at the bottom of a hydrostatic system is determined by the amount of fluid that there is “directly” above it (as it is, in fact, drawn on the animation). If it were the case, not every point on the base of an L-shaped container would be at the same pressure, because the points on the left corner would have much more amount of fluid above them than those on the right corner, and thus this fluid column won’t “weight down the right corner”. This is not the case: the whole base would indeed feel the same pressure in this situation. It is actually the depth of a point with respect to the surface of the fluid what determines pressure, regardless of container’s shape. This is also the reason why scuba divers don’t feel a sudden drop in pressure when entering a submarine cave.

[@pacog2k]

I agree

[@entcraft44]

This comment should be top comment. Everyone talks about how good the animation is - which it is! - but it is misleading and that should come first.

[@氷語]

This must get pinned

[@Sea_Leech]

Im too mentally ill equipped to understand what this means, dumb it down, please?

[@entcraft44]

@@Sea_Leech Shape of the container doesn't matter at all, only how deep the water is. The video showed a vessel with straight walls and one that gets wider at the top, both have the same pressure at the base. But one that gets narrower at the top is not shown, and that one would have the same pressure too!

[@gunkman_man]

the little sound effects are actually helping make this so clean and poppy. they the real MVPs

[@PEPPERslim_]

Internal grip is a great way to describe a structure

[@Cudchuddler]

Love me a tight internal grip

[@The1nOnlyGoober]

And women lmfao

[@gameseeker6307]

​@@The1nOnlyGoober🗿

[@NaisanSama]

​@@The1nOnlyGooberbruh really, I mean...

[@ssuuss539]

😏

[@Ultranova18]

Holy crap that loop was seamless

[@mystun3]

please watch his other videos they’re always so clean

[@jonslg240]

Seamless seemless One of those containers has 3x more energy though.. 😮 Did I just 🤯?

[@jamesbizs]

Because it’s a digital animation of main elements that aren’t even moving…. It takes almost no effort at all. He just uses the last few frames as the first few frames, and you people clap like trained seals lol.

[@Mr1121628]

Whenever I see a comment praising how seamless a loop is, we know we’ve found the room temp IQ individual

[@thesamy731]

Wait a second it was a loop? I have been here for like 3 years waiting for something to happen 😭😭😭

[@v.slavov]

Imagine if you could feel the pressure of the entire ocean just bellow the surface.

[@lefotografion]

Huhm... That just explained it for me.

[@Polden_]

Goated comment, I've never thought of it like that before

[@thisrandomdude_]

omg, that's a brilliant way to put it hahahahahah

[@joelstinson-carr6228]

Would make swimming a tad bit difficult

[@Thepher6]

If I had a funnel 21,409.48km wide that had a half inch spout, and filled with 6 inches of water... it'd still drain about as hard as pouring a kettle... my brain doesn't like it

[@NiffirgkcaJ]

What a BRILLIANT explanation!

[@Ihatecg]

Nerd

[@Ezekiel-James]

You mean BRILLIANT™'s learning program?

[@NedInYaHead]

Weirdly enough I was wondering this earlier. I came to the same conclusion but wondered if the sides exerted downwards pressure on the other water as it went down the slope. Thanks for the explanation!

[@Matf2023]

Hydrostatic pressure is proportional to the height of the fluid . The size of the the container, be it a swimming pool or a bath tub doesn't matter.

[@mathwiz2472]

Loops and turns don't have too much of an effect either as long as they're completely filled

[@jd35711]

if that weren't the case the the entire weight of the world's oceans would be pressing down on the deepest point of the mariana trench and water pressure wouldn't increase with depth elsewhere

[@fury9559]

Yeah they are right

[@numchux2]

​@@jd35711 makes sense

[@TEAMWHIRLWINDINTERCEPT]

MAYONNAISE ON A EXCLAVATOR

[@KnowArt]

hm yes yes

[@Hanz1941]

ITS GOING UPSTAIRS SO SEE YA LATER

[@Finland-1717]

BYE BYE. TO THE SKY

[@DandKGames]

I WANNA SEE YOU AS YOURE GOING SO HIGH

[@believer2]

​@@DandKGamesYOU KNOW YOU'RE NOT GONNA STAY, YOU'RE ESCALATING AWAY

[@RipkiyForever]

As a union plumber I’ll explain Barney style for y’all….normal(static,hydrostatic,etc) pressure is based off elevation(height), not volume(total amount of space taken up)….if you fill a vertical piece of pipe that’s 10 feet tall with water…it’ll have the same pressure at the bottom whether the pipe is 2in wide or 6in wide.

[@kadaso29]

I can't get it..can explain further maybe

[@solidracer7947]

​​​​@@kadaso29hydrostatic pressure calculated by height and density bcuz only water at the center will actually do pressure at 7th grade in science they shouldve said "shape of a cup doesnt change hydrostatic pressure" (please correct my mistakes bcuz I am not good at english)

[@imgingergiraffe3731]

The pressure would be higher though if the water was moving.

[@RipkiyForever]

@@imgingergiraffe3731 good thing we were talking about static

[@imgingergiraffe3731]

@@RipkiyForever that's true, but you can't build any water system without considering dynamic pressure.

[@DeepakMohantyNeo]

A thought experiment for you: 1. Fill the container with iron dust. 2. Carry out the same experiment as shown in this video. 3. Assume that the iron dust somehow became a sold chunk of iron, but maintained the shape. At this point, the iron chunk is in complete contact with the slanted faces. The bottom surface is in contact with the weighing machine. 4. Repeat step 2. Do you see any difference? 5. How do these two measurements differ from the case involving water (multiply the reading with water with the relative density of iron)? Did "internal grip" affect your observation?

[@aj_mcnamara]

Well, the comparison to a solid object is a mistake in the first place as it confuses weight with pressure. The larger water body would still weigh more, just as a solid object would. To make a comparison for solid objects under pressure, you'd have to compare them under a compressive load. It would far less easy to intuitively show in a short, but more accurate.

[@entcraft44]

If the iron dust would become a solid chunk magically without changing the total shape even slightly, then there would be no change in base pressure between step 2 and 4, regardless of the container. That is because after the dust has settled, the system is static and nothing is moving anymore (on a macroscopic level), sow whether the dust particles can move relative to each other doesn't matter.

[@entcraft44]

Number five is more tricky. It goes beyond a thought experiment deep into the fluid dynamics of particulate matter. Dust can sometimes behave like a liquid but it can also get "stuck" into shapes. That is because liquids only have dynamic friction (viscosity) and dust or sand also have static friction (I don't know enough fluid dynamics to give the correct terms) The result is that you can make a hill out of dust as long as the sides aren't too steep, but you cant make a hill out of water or even honey. I believe that if you allow the iron dust to settle under gentle vibrations, it will eventually have the same result as water in both containers. But the dust WILL have voids so you have to take an effective density and not the density of a chunk of iron.

[@jucom756]

If we assume the elasticity of the holding container is uniform then it should go from hydrostatic to uniformly distributed pressure, however the problem with solids is that if at any point the contact force varies, that can propagate through the object so without much noticeable difference the pressure distribution could be fully centered on the middle or it could be fully held up by the sides and if the somids are completely unelastic you cannot tell the difference (however completely unelastic solids violate relativity so they don't exist, so we may assume the hydrostatic pressure is the one it settles in to if there is no thermal compression, otherwise thermal compression will make it fully lean on the sides

[@LOFTIB]

The video is referring to pressure exerted at the bottom of the container, not weight. So as long as the iron was in liquid state it would also be exerting equivalent pressure at the bottom of both container shapes. …assuming both containers are full of liquid iron. One container would weigh more than the other with the additional volume/ mass, but they would have the same hydrostatic value at the bottom.

[@youkofoxy]

As always, delivering a captivating animation with a great explanation in a perfect loop and subtle sponsorship message.

[@azizsalo1329]

Wow brilliant loop.

[@deonbrewis8876]

The audio was recorded to loop at a different position than the video. That's what makes it so brilliant.

[@KnowArt]

I see what you did there

[@HDTomo]

@user-up1id5rv2mI don't think you understand why it's Brilliant 🌐

[@RealComplexity-math]

And brilliant ad.

[@itsgonnabeanaurfromme]

​@user-up1id5rv2mwhat? There's no real cut. It's ANIMATED. it's not like they were recording these things happening.

[@NickAndriadze]

That is unironically one of the smoothest loops I've ever seen. Plus, the narrator has really great voice and the information is very interesting and something I actually didn't know. I wonder why this video only has ~20 likes...

[@KnowArt]

thanks for the kind words. KZbin has been putting up more of a fight than the short form platforms, but I'm getting there!

[@hReNeVaYz1]

He has 7k now

[@isakneuman9995]

​@@hReNeVaYz1u mean 40k

[@tillmartens5770]

it isn't really saying much but what the video expains is factually wrong! its the same pressure but not for that reason!

[@thecoolguy3498]

@@isakneuman9995lol. U mean 120k? Damn, this guys blowing UP

[@fish_in_distress]

This seems unintuitive at first but when I thought about it on a larger scale it makes perfect sense. Like if you stepped into a hole in a lake you wouldn't suddenly have the pressure of the entire lake on your foot.

[@whothehellarewe]

Exactly right. Water isn’t compressible, so the pressure you feel is of all the water that’s currently ‘stacked’ directly on top of you.

[@tenpenny1550]

That was a wonderful analogy.

[@ChantelleDubois]

Imagine walking into a lake and immediately disintegrating your ankle in a hole

[@thallakai]

thanks for putting it like that, fishie.

[@cpyt]

I normally despise ads on shorts, but this one was not intrusive and actually felt like a real video! Great job!

[@beyyyyyyyy]

I love videos like these - quick and concise, interesting information that a lot of people wouldn't know. I love physics and learning all the intricate ways everything works in the world

[@mikealjohnsson]

Internal grip aye? You make me miss her 😢

[@mikealjohnsson]

Randomly got this clip again, forgot I saw it before and commented on it Was comment something like this again. Damn I'm funny

[@68able2]

@@mikealjohnssoni do that all the time i love hyping myself from 6 months ago up

[@sameertokhi7443]

​​@@mikealjohnssonWhen I do it I cringe at my old self smh. Good for u lol

[@TheDodgyCyclist]

Or Mathematically: Pressure is given as Force/Area. (F/A) Force of the liquid is equivalent to Volume x Density x Gravitational Field Strengh. (V Rho G) By dividing by area, we can cancel out the volume, and replace with height. V Rho G/A = Rho G H Therefore pressure at a point in fluid is simply: Density x Gravitational Field Strengh x Height. Rho G H.

[@pyotrberia9741]

This calculation simply accepts the principle being demonstrated rather than deriving it or illustrating it. The key issue is why use the same value of "V" when the containers have different volumes.

[@jucom756]

The pressure _in_ the water is the same at the bottom, but the pressure at the bottom of the containers is different, since the reason the water pressure is relieved is that the container is exercising a normal force on it.

[@mach1553]

There's more water weight.

[@pf_ebag8701]

Uhh yeah its almost like.....thats exactly what the video was about

[@gorg212]

Sponser plug execution was brilliant!

[@zolv]

One of the best explanation of hydrostatic paradox!!! You got my sub!

[@Kersijus]

the pressure of water is only dependent on its height, you can make a barrel leak just by putting a very long straw on top of it it's impressive

[@lightningmcqueen1717]

ngl this just makes zero sense but sure

[@Kersijus]

@@lightningmcqueen1717 you can look up "Pascal's Blaising Barrel - Exploding Glass Barrel with Water Pressure" and see one of these experiments, it's really impressive

[@eddshaeburner]

I truly was never good at fluid dynamics. Thank you for this

[@barnabasrsnags4828]

No one is

[@2fifty533]

this is hydrostatics, not fluid dynamics... fluid dynamics is far more advanced than this, you can tell by just taking a glance at the math involved

[@aaronaaron5013]

I cant say what's more beautiful, this loop, or this content...

[@jamesbizs]

Lol why would you insult scientific content, by comparing it to someone copy and pasting a still picture as the first and last frames of an animation?

[@Mr1121628]

Found the dodo bird😂

[@kanokoehara1712]

the way you chose to talk makes the loop so seamless! thats awesome

[@Duck-mn2sy]

I didn’t know KZbin shorts could be 32 minutes long

[@DSH__]

Same here😊

[@wailghaoui7811]

I've always had the exact same question in mind, and you answered it, thanks

[@MythicalOtter]

This is weird how it works, but it makes sense, like luckily we don’t get crushed the second we go in the ocean

[@h0ss4m420]

the loop so seamless that i actually thought the video itself is on repeat for a couple of times, good work there

[@pointbreak2993]

I’d explain it just like “bottlenecking” only the neck matters for the amount that can flow out, so if you have one thing bottlenecked and another thing that’s the same size as the neck of the bottle the output is the same

[@patty4449]

Actually that is false, the water has enough particles to curve the pressure, which redistributed it in a parabellic manner... Thus the area at the bottom does have the same pressure but for a totally different reason... The sides take on more than the normal G force due to that

[@ferrumignis]

Could I have some dressing to go with that word salad?

[@PhyllisLane-xj5uf]

​@@ferrumignisTake an empty shapeless bag. Fill partially with water. Notice the shape the bottom. It is a parabola. This is the shape water would like to take. But the edges of the larger container actually structure againgst the force trying turn the water into a parabola

[@ferrumignis]

@@PhyllisLane-xj5uf The stress imposed on the bag by the water causes the water to take that shape, its not that the water "wants" to.

[@CastleMinecrafterZ]

NERD@@ferrumignis

[@mwhite9298]

I've watched it 4 times, and I forgot where the video actually begins.

[@jamesbizs]

Almost like he uses the same frames of a stationary digital animation, as the last few frames of a station digital animation.

[@Mr1121628]

Durr the video is a loop durr 😂😂

[@elpotaaatoes]

Me watching the short 23 times because I didn't noticed the loop which is smooth as hell.

[@jamesbizs]

Yeah, because most shorts are 375 seconds long 🙄.

[@andmicbro1]

That's a clean loop. Didn't catch where the break was until the second time around. Bravo!

[@2Cerealbox]

these are so well done. Everything about it is so distinctive and fun. Even the guy's accent is fun. Each one is a little contained art piece.

[@SHLee14]

Then how about Bernoulli's equation? The equation represents when the fluid matters flow through the smaller place, its pressure and velocity increases. And of course, the mass(amount) of the fluid is also great factor of this equation. But this video says there is no any difference on the pressure when the same type of fluid is in the different shaped-structures. Can someone explain me why?

[@domenicolanza130]

The Bernoulli's equation is for fluid dynamics. Stevino's law(the one used here, that says dP/dz=-rho) is for fluid static. Here we're analyzing fluid static, so when we have equilibrium

[@SHLee14]

​@@domenicolanza130 Hi there. I still can't understand the difference between hydrostatic and hydrodynamics. A fluid at rest also has the property of falling down because it is affected by gravity, just like a flowing fluid. So the difference between the two is related to a container of fluid? (The downside of container in the video is certainly blocked I think)

[@domenicolanza130]

@@SHLee14 hi, the two equation are approximations(e.g. incompressible fluid) for different situations. It is important to distinguish the two cases in the derivation because certain terms disappear. If you want to analyze a situation like the one in the video, where everything is still/fixed/static, we are in hydrostatic, and we can explain why everything is static (from the Stevino-law). If a fluid is moving, you can use the Bernoulli's equation. It's true that the Fluid could move, but as you stated, the gravity force is balanced by some reaction of the container, so the situation is static. In general, you should always consider movement (like when in dynamic you consider an acceleration), and in fact, if you use the Bernoulli's equation here, with v=0, you obtain the Stevino-law. But here the fact that v=0 is assumed since that you can see that the Fluid is static. Hope this clarifies a little bit.

[@henrysodey843]

Bro I watched it twice before even realizing it looped whattttt

[@jamesbizs]

Because it’s only 15 seconds long and you’re expecting this content to actually have some; you know, content…

[@henrysodey843]

@@jamesbizs If you learned nothing, that’s your fault lmao

[@Mr1121628]

@@henrysodey843what if he already knew that? Pretty much every single video on this channel is 101 level science. Plus the creator puts an emphasis on making each video loop well, and less so on education.

[@kandd2591]

the built in sponserships being so subtle and the CLEAN loop makes this just perfect

[@invisomanisthebest]

A flawless and informative short, hats off to you sir.

[@MrSupermeisi]

This is a perfect explanation of the hydrostatical paradoxon

[@allexandruprroca6713]

Perfect loop and good explanation

[@IsaacTGamer]

I'm already subbed to Brilliant - I love it! Totally recommend it

[@kolyamboni]

An amazing channel with great educational content. U’ve got a new follower

[@riahcrawford]

bro this was such a good transition I had to watch it 3 times to realize it looped

[@sakthivel-25872]

Straight to the point!

[@Ihavenoenemies0_o]

What a brilliant explanation

[@Kirble-ll5gr]

The noises were quite well designed, very cool!

[@theeswinkler4998]

Here is the algebraic proof just for fun: If q is density and A is the area under the container then we have P = mg/A The mass of the water is equal to: P = Ahq × g/A So therefore: P = qhg! Which is the formula for fluid pressure relative to depth!

[@jokekopter2509]

It looks like Vukovar water tower,it wss built to be wider on top to releafe pressure from bottom.

[@september1683]

Good explanation. Thanks!

[@neurofiedyamato8763]

I learned something today. Straight to the point, well narrated, good and unintrusive sponsor placement, and perfect loop.

[@Steyreon]

I start to love this channel ❤

[@jasoneffiwatt9517]

Loop was so clean I didn't even realize it

[@arturoquinteros4473]

Great way to explain it, thanks❤

[@supernewuser]

that loop was magical

[@E44792]

found this out when i was doing a project on a dam. i was so confused with myself on how to measure the water level properly using pressure sensor

[@JohnLongsteel]

I Learned this on school this year, cool stuff to learn

[@felixf6811]

That loop is so much better than all the other ones ive seen EVER

[@The_TinesJathian]

does this mean that if there was an underwater cave deep in the ocean the water pressure within would be very low compared to outside?

[@zachkidd8710]

PERFECT LOOP!!!

[@prathmeshkulkarni6108]

This is a fun concept. A question in my entrance exam was asked using this

[@moneygrowslikegrass]

Not gonna lie this channel is amazing. I love the perfect loops and the sneaky brilliant sponsor placement.

[@DerMarkus1982]

I like the looping recursive explainer videos that you provide, @KnowArt! Yapping on with no comma nor full-stop, but I like them 😁

[@nordicmind82]

This fundamentally goes against my intuition/assumption/gut feeling. Thank you!

[@naattxxnaattxx7055]

Your loops are crazy!

[@ThunderSky]

Might be the best explanation I ever heard on the topic, and was done in 10 seconds. Nice

[@dr_quantum1012]

Better than my fluids and dynamics course for sure

[@CaCTus09897]

I've been watching you since you started and I thought you will be successful and here it is.

[@whillgaming24]

so that's how the ocean's pressure is evenly distributed!!! that's so cool

[@paveluchitel]

The loop was soo smooth

[@lapidazuli8033]

Love the subtle brilliant logo in there Subtle sponsors are much better than interrupting ones

[@moroncosmin]

Also demonstrated by the fact that pressure is equals to density times height times gravitational acceleration, height is the same in both containers so it checks out

[@Just_A_Simple_guy]

even if its shape wasnt like that, the pressure would have remain same cuz it only depends on the depth and acceleration due to gravity and fluid density (both are same fluid). the force will he equally distributed at each point, which will cause it to have equal pressure at every point having same depth (max will be at the mid centre becuz it has the most depth)

[@Teakbumblbee]

That was so clean!

[@key462]

This is also the reason why water tower often has huge pipe in the middle rather than a small pipe that was used by the pump to fill the tank, im not an engineer but from my hypothesis those big pipe have to at a certain diameter so that is doesnt overpressure/underpressure the small pipe that was used to deliver the water to homes...

[@endersquiddyyoutube7999]

I didn't even notice the loop the first time, good job

[@B9rt]

Now that’s what I needed to learn from science

[@TimDavis-p8c]

The height of the column of fluid is all that matters in hydrostatic pressure. Height x weight x .052 is the equation used to determine hydrostatic pressure when fighting blowouts in the oilfield

[@TheMrBigShot96]

Best loop I've ever seen!

[@beyond-infinity]

That's a slick sponser advert

[@deluxeonyoutube2973]

Holy shit ive watched like 4 of your shorts and the loop still gets me everytime

[@Allen-R]

That subtlety was nice

[@AbyssalDragon42]

I love the voice they're using here. And yes, p=pgh where the first p is pressure, the second p is density, the g is gravity (about 9.81 m/s^2 on earth), and the h is the height of the fluid. With a solid, p=mg/A, where the first p is the same, m is the mass of the solid, g is the same, and A is the area that the weight of the solid is applied over

[@hybridsel6]

ive seen someone state this animation is misleading, but it honestly is not, if you listen to the video and what it shows, a different shaped container with a different bottom compartment would be an entirely different mechanism of pressure, while the containers shown in this video do accurately demonstrate the effect it describes, as one cube of water has two cubes directly above it and that being the only outward force the bottom cube is receiving, the hydrostatic pressure will be the same in both containers, and i am sure Brilliant can demonstrate the difference more clearly than I can here

[@slavicraccoon]

Water pressure from a water tower for example is determined by multiplying height × gravity × density to get the pressure. Like the video says the shape of the container doesnt matter, only the height of the water level. Eg, a 1" pipe that has 10' of water has the same pressure at the bottom as a 10" pipe with 10' of water

[@TheInterestingInformer]

WOW that was clean

[@funky555]

This just connected so many dots in my brain.

[@Arthur4266s]

Best. loop. ever.

[@Perplexer1]

I didn't know this. I love these types of education al shorts!

[@kengrow3992]

Thank you for taking the effort to try and get people to think. This is definitely a problem in society today.

[@Nunya111]

Pretty damn neat I love learning little random factoids like thsi

[@stebbenwolfe]

It’s like how we have a column of air above us that technically pushes down on us and we aren’t crushed by the weight of all the air in the atmosphere.

[@uridavidson5]

Thats Brilliant product placement

[@Apeironn87]

You've finally solved a question that had always kept me awake at night

[@DarrellVermilion]

Interesting, I just thought the water on the sides would put some sort of lateral pressure, but it seems like pressure comes in layers? I love not knowing things, it's one of the best ways to challenge (and repair) broken intuition. I'd be interested to see this applied to much larger bodies of water and at varying depths.

[@colinbergmann5750]

Actual perfect loop. Congrats!!!