Thanks to @SteveMould for battling this out with me! Every time I feel I know something a debate like this shatters some of my thoughts and makes me think harder. Make sure to check Steve's first video: kzread.info/dash/bejne/o4iAtJl_p7u7hZc.html and NOW his second video: kzread.info/dash/bejne/lJenxJOxcdmdiKQ.html that is way more convincing! Does it mean I may lose my 10000 cents?! Eh, it is for science so that's fine. But I haven't given up just yet!

@TheSoundMan1

2 жыл бұрын

You are right on the timing read my comment! Sorry for all the edits I had to keep fixing it!

@darksector1389

2 жыл бұрын

Loved both explanations but your force analysis seems to be correct compared to Steve's. To mention the upward force against gravitational force is very important. Also your 2D explanation just won the whole debate. It was a genius way of explaining it. As Persians say: kheyli ghashang tozih dadi 😄

@Mirrikat45

2 жыл бұрын

I love debates like this for this reason. I wish more people would argue with me!

@bruggetje

2 жыл бұрын

Your both wrong, its the law of inertia. As these chains have the mass it requires to keep moving. Give me the 10000 cents instead, I am so poor I din't had a real lunch for years! :(

@TheSoundMan1

2 жыл бұрын

@@bruggetje I don't think that is the case inertia would apply in the siphoning effect because the chain is at a higher starting point than the end point that is lower but there has to be some kind of compensation from 0 energy at normal gravity and something moving faster than gravity read my comment hopefully it will make sense.

Ngl this is pretty convincing

@resham9914

2 жыл бұрын

Finally

@qwertyasdfg4932

2 жыл бұрын

Do a vid too 🤣

@jagadishk4513

2 жыл бұрын

Do a video on it pretty please

@GarrettBlackmon

2 жыл бұрын

Just wait, my boy is coming for your magical wind car...

@sixty502

2 жыл бұрын

Ayy veritasium

"It's a mechanical problem so as an Electrical Engineer I'm over qualified" is probably the best thing I've ever heard.

@bouipozz

2 жыл бұрын

As an electrical engineer, Im in stitches :D

@laithal-athary9932

2 жыл бұрын

same note ha ha since i am electrical engineer too lol

@ren7a8ero

2 жыл бұрын

As an EE, I feel rectified :3

@420Chameleon

2 жыл бұрын

Electrical engineers unite!

@mykeybalu6739

2 жыл бұрын

Even us mechanical engineers enjoyed that sarcasm

“Well its a mechanical issue so as an Electrical Engineer I am overqualified” is my favorite quote

@Yora21

2 жыл бұрын

It's these moments when I remember to give it a like.

@nightjaronthegate

2 жыл бұрын

Piggybacking on your comment here but I clicked Like. The explanation is very simple and everyone seems to have missed it. The only forces that need to be considered are gravity and the tension in the chain. To work well the phenomenon requires a chain without stiffness that is nearly frictionless in motion but lumpy enough to prevent transmitting tension through the pile in the beaker. The fountain effect is then an inevitable result of the chain falling. The speed of the moving part of the chain is the same throughout its length except where it is starting to rise and unwinding from the pile. As it starts to fall it accelerates and the tension pulling the chain in the beaker is the weight of the falling chain below the level of the pile. This means that before it reaches the floor the force pulling the chain upwards out of the beaker is many times more than the weight of chain being pulled, so it accelerates upwards very rapidly and cannot change direction quickly enough to avoid rising above the rim. The only forces acting on the chain as it rises are gravity and tension, which acts along the chain. The tension is much greater than gravity and only acts downwards on the part of the chain that has passed the peak. The idea of the beaker and chain pile providing a force to push the chain upwards is obvious nonsense. All it does is stop the chain falling through the bottom; a stationary body does not accelerate another body upwards except in bouncing. When other types of chain fail to produce fountains it is because the resistances to motion slow them down too much.

@fancen

2 жыл бұрын

ok

@oldcowbb

2 жыл бұрын

i'm offended

@markgado8782

2 жыл бұрын

I lol'd hard! 🤣

I literally never know a centeral vacuum system exsisted, that's so cool!

@LE0NSKA

2 жыл бұрын

me too. and now that sequence in "it takes two" makes so much more sense lol

@morpheus6749

2 жыл бұрын

Something else you probably don't know exists is indoor plumbing. It's quite common in the Western world, but mostly unknown in the Indian subcontinent.

@mrmilkshake9824

2 жыл бұрын

@@morpheus6749 lmfao are you ok? Well probably not. Anyway I am from Australia 🦘 not sure you know where that is tho. Good luck finding it on a map 👍

@aidanhudson4213

2 жыл бұрын

@@morpheus6749 how did you make this into a race thing, is everything ok at home?

@morpheus6749

2 жыл бұрын

@@aidanhudson4213 Says the guy that just brought race into a non-race related topic. Say, aren't you due at that ANTIFA burn-fest?

"It's a mechanical problem, so as an electrical engineer I'm over qualified," had me in stitches.

@Palestine-first

2 жыл бұрын

hhhh me to

@FelonyVideos

2 жыл бұрын

Its true, though.

@Palestine-first

2 жыл бұрын

@@FelonyVideos yes %100

@lyndonthan4350

2 жыл бұрын

...But Whatever !

@zachxiong2657

2 жыл бұрын

Fucking love this

"It's a mechanical problem. So, as an Electrical Engineer, I'm overqualified." 🤣

@3_letter_animal

2 жыл бұрын

He is right and you all know it :D

@drogenfeld

2 жыл бұрын

That was the first thing that I learned in electrotechnics.

@EvocativeKitsune

2 жыл бұрын

As a mechanical engineer, this is accurate.

@cpscdave

2 жыл бұрын

Fun fact: There are only 2 types of engineers. Electrical Engineers and those who weren't smart enough to be electrical!

@lapidations

2 жыл бұрын

That was funny, incorrect but really funny

I love the way he says “negligible” so much that I’ve started saying it that way. Feels much better

I don't know you personally, but I love ya Mehdi. You are one of my favorite humans. I hope you continue to find happiness in educating all of us, because you are damned good at it. Thank you for teaching us, and having a great sense of humor while doing so lol

Steve is my boi but I'm Team Mehdi on this one. I hereby rename it the Mouldy Boom.

@blu956

2 жыл бұрын

I'm with you. Although I feel that the pushup effect would actually make the Mould Effect be self starting rather than where he had to create the original loop that the Mehdi constant goes through.

@TheOnlyToblin

2 жыл бұрын

Eyy! All my favourite science tubers in one place. Veritasium, Medlife, Mould, Mehdi. All we are missing now are Discount Thor (sorry, Kyle!) and Tom Scott.

@vaderaguk

2 жыл бұрын

+1 I think Mehdi's got this...

@blaircox1589

2 жыл бұрын

that the channels I follow all interact is either enjoyable coincidence, or the Algorithm messing with my life. Either way - more please :D

@Lambda_Ovine

2 жыл бұрын

You just said that because you wanted to make a pun

Alright ElectroBOOM, I think you’re now ready to fight Veritasium...

@solchapeau6343

2 жыл бұрын

Veritasium once said that if you sneeze while driving you'd very likely crash your car. Yet that has never happened.

@paddington1670

2 жыл бұрын

@@solchapeau6343 1 second of unescapable inattention is still one full second that anything can happen. He's not wrong, but the probability doesnt change much in a measurable way, just theoretical.

@theheadofthetable1734

2 жыл бұрын

@@solchapeau6343 I mean the chances are low but never 0

@JustinLSly

2 жыл бұрын

What would happen if you did this experiment at 500m meters above sea level, the results would be different because of the gravitational force of earth acting on the chain.

@mitulsingh473

2 жыл бұрын

lol

I looked away for a second when you said, "The Rectifier!". My stupidly dumb brain heard, "The Rectum Fire!". Two VERY different things. You have one of my absolute favorite channels on KZread. Thanks for teaching me so much!

We saw this once happen on a tanker. The winch mechanism broke, and the anchor dropped so fast that the chain was whipping on the deck. The chain is massive and had so much weight it tore pieces of metal off around the hole where it normally comes out.

when he didn't zap himself, you know he's serious

@FindLiberty

2 жыл бұрын

He came so close at 13:37 lol

@PianoMastR64

2 жыл бұрын

I thought for sure he was gonna find a way to zap himself with the battery

@drumnotdrum9262

2 жыл бұрын

No zap, I thought I’d be disappointed. This was a great video!

"let's ignore friction for now" said every physics student always.

@KarryKarryKarry

2 жыл бұрын

😂

@loganvetsch8979

2 жыл бұрын

Air resistance who?

@Gkokkinakis2

2 жыл бұрын

@@loganvetsch8979 lets ingore that too for the sake sake of our sanity

@FromNothingComesNothing

2 жыл бұрын

Poor friction and wind resistant, often get ignored

@badassmastermax

2 жыл бұрын

@@FromNothingComesNothing not a physics dude, but how come wind resistance doesn't fall under "friction" if it literally is friction

You see this effect on a much larger scale when ships drop their anchor. The chain starts to snake horizontally as the large anchor drops. As if the chain were solid at the point of the turns

@mikefochtman7164

2 жыл бұрын

But if the chain gets going too fast, it can lift from the windless. If THAT happens, RUN!!! :)

@TrollFalcon

2 жыл бұрын

As a rigger, I've seen it.

@suzannep

2 жыл бұрын

Now I want to see a video of this happening! I must go search KZread for videos of ships dropping anchor now... Unless you have a suggested video to save me countless hours LOL

@dragonfireproductions790

2 жыл бұрын

@@suzannep kzread.info/dash/bejne/moGt1qqtYaeXl9I.html

@MrCow579

2 жыл бұрын

@@dragonfireproductions790 This is the video we needed lol

Your last test was the most amazing science example I have seen about the Mould Effect. Keep up the good work.

I want to see the behind-the-scenes footage of Medhi running down his hallway as fast as he can

1:40 "It's a mechanical problem so as an electrical engineer I'm over qualified" loving it

@storms13

2 жыл бұрын

I’ve never felt so insulted in my life

@thegreenxeno9430

2 жыл бұрын

hahahehahehahehahaha

@061banyon

2 жыл бұрын

Hilarious!

@bah3698

2 жыл бұрын

He said fax

Excellent! Even if you are just an electronical engineer. You are verifying my belief that this was an example of momentum trying to keep a moving object moving in the same direction.

@ElectroBOOM you can also see this effect using a rope going over an edge aswell given enough velocity. So in reality this is just essentially a basic trajectory problem (which is exactly how you explained it anyways) where each point of the chain leaving the cup has a slightly faster initial velocity allowing that point to hit a higher trajectory.

"There is a small force of gravity acting on the short length of chain. Let's ignore that. Let's also ignore friction for now." Spoken like a true physicist.

@danielclv97

2 жыл бұрын

Like a true engineer *

@jakx2ob

2 жыл бұрын

@@danielclv97 I would think engineers are better at keeping it real.

@xXRedyzXx

2 жыл бұрын

I believe he also said that's because there's a F2 where F1

@FireStormOOO_

2 жыл бұрын

Now consider a chain falling in a perfect frictionless vaccum before hitting a spherical cow...

@danielclv97

2 жыл бұрын

@@jakx2ob physics put everything on paper, they want to model the reality as best as possible. Engineers put only what they need and make more approximations, they want to model the reality as simple as possible, as long as the result is within an error margin. PS: Mehdi is an electrical engineer, I am an automation engineer.

"Ignore the friction for now" sounds like engineering

@RussellTeapot

2 жыл бұрын

Pi equals 3

@SergioEduP

2 жыл бұрын

@@RussellTeapot close enough for now.

@BudgiePanic

2 жыл бұрын

@@RussellTeapot I'm gonna approximate 4 = 3.

@Bob5mith

2 жыл бұрын

It's the spherical cows in a vacuum all over again.

@Electricz0

2 жыл бұрын

Sounds like physics 101.

"two gentlemen having a civilized scientific disagreement... to the death!" That line is brilliant! I got tears in my eyes now.

This entire chain of videos-pun entirely intentional-makes me think of how scientists of previous, pre-KZread times would hash out such disputes, often to the benefit of science. Now we ALL get to be a part of it! I love this!

you've explained this well.

@KevinDSaputra

2 жыл бұрын

I hope Mehdi win

@Sheikrisvan1991

2 жыл бұрын

Well trained

@Rivalerouse

2 жыл бұрын

palonsinger

This answer literally makes way more sense. The 2D models were key

@jnsurf5512

2 жыл бұрын

But the curve in the 2d model moves in the direction it's being pulled, however the Mould affect causes the chain to move in the opposite direction it's being pulled. Therefore the experiments he did, the Mould effect wasn't happening, because if it was, the curve in the chain would move to the right in the opposite direction of the force, but it doesn't

@jnsurf5512

2 жыл бұрын

at 10:40 when he pulls the chain, the curve moves to the left consistently throught the time the force is acting on it, the same direction as the force. But when the experiment is done in the glass cup, the curve in the chain chain goes up, in the opposite direction to the force pulling downwards, so therefore the Mould affect doesn't occur in the 2D model at 10:40

@satsubatsu347

2 жыл бұрын

@@jnsurf5512 Except it doesn't.

@jnsurf5512

2 жыл бұрын

@@satsubatsu347 do u have eyes it does

@thehusshisht1708

2 жыл бұрын

@@jnsurf5512 can you explain in more details which part of the curve moves left at 10:40?

Mehdi, the experimentation you have done here is well-designed, beautifully executed, and deeply informative. A great many scientists in academia and industry could learn valuable lessons on how to analyze difficult problems efficiently just by watching your video. I took an interest in the chain fountain before your debate with Steve Mould came up, and had reluctantly intended to do a short video for his August 2021 contest to prove how the Royal Academy experiment was experimentally sloppy and could be disproven by attaching lead weights to fishing line. Then I saw your video and exclaimed to my wife, "This fellow has already experimented, beautifully! I don't have to buy all those stupid lead weights!" Derek Muller, to me Mehdi should at least be considered for one of your August 2021 video contest prizes for this video, even if this video as a whole is too long to meet the rules. Mehdi's experimental work here reminded me of your own similarly excellent experimental approach to uncovering why wind moving across a fixed surface is _always_ a power source, regardless of how some device that accesses that power is moving relative to either of the surfaces. Regarding one amusing way to understand why the chain fountain manages to defy gravity, here's the title of a paper I'm writing for my tarxiv.org website: "On Mould's Accidental Implementation of the Goddard Antigravity Engine." Yes, Virginia, centrifugal forces are real in practice, no matter how much the Royal Academy may fume about "silly" engineers using this mathematically very-well-defined pseudo force as a handy way to summarize the effects of linear momentum in systems under tension. Along those lines, Mehdi, I'm pretty sure your constant is real and provides an insight into the dynamics of such systems, but that's only a suspicion at this point. There also exists a far more powerful and generic model for what Steve Mould has uncovered, which for lack of any existing phrase I'm aware of I'll invent a new phrase: a dynamic standing wave (DSW), in which the medium is in motion and the observer is in the same frame of motion as the dynamic wave. Specifically, the Mould chain fountain is a dispersion-suppressed soliton as viewed from the same frame of motion as the soliton. As Steve Mould has beautifully shown in some of his videos, DSWs also form much more complex shapes such as helices. This makes perfect sense from a dynamic standing wave perspective since it's easy to create helical waves in chains. All the Mould mechanism is doing is allowing the observer to "move with" those helical waves and see them as if they were standing still. With the right chain materials, drivers (e.g., the high-speed equivalent of an escalator loop), and careful tweaking of momentum inputs from various directions, it should be possible to create arbitrarily complex stable and metastable DSW waveforms, though chromatic dispersion will impose some limits on finer details. At least some non-trivial applications of DSWs are likely since, if nothing else, systems that support a rich repertoire of metastable states tend to lead to new, unexpected applications in both mechanics and information processing. Given that chain physics has been a "mature" discipline for centuries, I am truly surprised that the possibility of dynamic standing waves in moving chains was never noticed before Mould's experiment. On the other hand, I've certainly seen this same kind of "familiarity blindness" in play in other areas, especially ones where technology is moving quickly (e.g., packet-switching networks). Here, though, the oversight appears to be due to pure familiarity blindness without progress issues: Everyone assumed chain motions to be "solved" and so never bothered to look. So, kudos to Steve Mould and Mehdi Sadaghdar! Your brilliant experimental work may well have created a whole new area of research.

@YoungPhysicistsClub1729

2 жыл бұрын

that's quite the comment you've typed up there

@bamsuth9650

Жыл бұрын

Clinical

@suspense_comix3237

Жыл бұрын

IT'S MEHDI WHY DO YOU PEOPLE KEEP SPELLING THIS WRO-

@InitialDreadly

Жыл бұрын

Dude, I'm happy enough to read long comments, but please break it up into paragraphs, this is next to impossible to read without putting in a ton of effort to keep track of where the sentence continues. I keep reading the same line twice trying to figure out where the next one starts, and I think I'm just going to stop at the halfway mark because I shouldn't have to put this much effort into reading a comment. It could be 15x the length and still be easier to read if it were broken up properly...

@TerryBollinger

Жыл бұрын

@@InitialDreadlywow, good reminder, thanks! I'll fix this. I'm usually good about breaking everything up into paragraphs, so I was shocked when I saw this old comment. Formatting glitch?

I think its pretty simple. Its just the arc of a whip thats traveling at the velocity of the falling chain. It looks like it stays at the top but its actually a whip arc traveling throughout the entire length of the chain, which is constantly being pulled faster and faster by gravity, which makes the arc larger and larger as the velocity increases. There you have it, now its called the Svenson effect.

"Loud noise means more banging" - Mehdi 2021.

@jfly609

2 жыл бұрын

Underrated

@tunahan5615

2 жыл бұрын

sarcastic or not, CHANGE THAT TO MEHDİ

@nicolasgoubin

2 жыл бұрын

@@tunahan5615 damn i should receive 5 gizillions volts straight to my chest for mispelling our savior's name. I correct it right away :cccc

@theunknown412

2 жыл бұрын

I don't like the way that my brain is thinking about that.

@divyadeenu1686

2 жыл бұрын

Looks like old 2020 mehdi upgraded to 2021 new mehdi

"and since I'm electrical engineer, I'm over qualified" 😂😂

@rebchizelbeak5392

2 жыл бұрын

As a mechanical and electrical engineer with background in both fields, I agree. Mechanical engineers can forget the forest for the trees. If electrical engineers forget, they get shocked into remembering.

@EnthalpyAndEntropy

2 жыл бұрын

@@rebchizelbeak5392 chemical engineer here. You're not wrong.

@Sarghe420

2 жыл бұрын

“But i have more subscribers”

@transfo47

2 жыл бұрын

@@rebchizelbeak5392 Most MechEs would agree.

@Talishar

2 жыл бұрын

@@rebchizelbeak5392 I feel that MechEs are probably all forest and less about the specific trees. They get inundated with so much general, broad knowledge that much of the specialized stuff is pushed off to engineering specializations or to technical electives in grad school.

this is a very logical explanation. i honestly didnt think that this needed to be explained. i could figure that out without even reading a paper on this

Awesome demonstration of ideas and how to prove a theory. I will be using this video in my science teaching.

"Well, it's a mechanical problem, so as an electrical engineer I'm overqualified." This line killed me as a fellow electrical engineer :D. You probably just earned many haters Mehdi.

@heh2393

2 жыл бұрын

Love it nonetheless lmao

@ipcheng8022

2 жыл бұрын

thats why i went for mechatronic

@expertoflizardcorrugation3967

2 жыл бұрын

as someone who wants to go into mechanical engineering I love and hate that, mostly love

@nathanskinner423

2 жыл бұрын

Nah, as an ME I enjoyed this part of the video the most.

@Denys_Fresh_Flesh

2 жыл бұрын

electroboom born overqualified!!

"At home we have a central vacuum system with the hose inside the wall." Wait... what? I think I've just come across something that perplexes me more than the Mould effect.

@aftokratory

2 жыл бұрын

Yeah same! I have never seen anything like that

@jamisonw.327

2 жыл бұрын

A lot of upper class houses in the Midwest have something similar. I prefer a regular vacuum personally, but it's nice for quick clean ups. My friend had one growing up.

@jurivlk5433

2 жыл бұрын

That was common for the first vacuum cleaners like 100 years ago but I never imagined it still would exist in a place other than a museum! I was perplex!

@drasco61084

2 жыл бұрын

Our house has this haha but it has never worked as far as I know..

@k7y

2 жыл бұрын

Some of the house in the NA have these and they all connect to a massive vacuum pump in the gurage or the basement. Usually it's just ports installed in the wall where you can attach a massive hose.

The point at 3:14 helped me understand it so much better! Funny that the guy arguing against the counter-force helps me understand it better than the one arguing for it!

Amazing video, I think your explanation is better fitting. Loved every minute of it.

"MEHDI, WHY IS THE FLOOR ALL SCRATCHED UP!?"

@plane830

2 жыл бұрын

AND ALL OF THE GLASSES ARE CHIPPED!

Pretty surprised at how messy that Cambridge study was. Why on earth would they use different bowls and introduce new variables? I'm not even a scientist and know this is a bad thing to do in research

@TheWondermittens

2 жыл бұрын

Downright unscientific. Those guys started with a preconceived result and worked backward force fit the data to a hypothesis. Good science involves challenging your hypothesis to the max to find the result that fits the data.

@beetard5384

2 жыл бұрын

@@TheWondermittens THIS.

@SukacitaYeremia

2 жыл бұрын

That's why I went "LET'S FUCKING GOOOOOOOOO" when he said it's rigged. Because I concluded that it definitely is heh heh

@arck9395

2 жыл бұрын

As a scientist I can confirm that the Cambridge study is exactly how 90% of the modern institution of science operates. You can't put being right first when you need to publish to keep your job.

@JamesFaction

2 жыл бұрын

@@arck9395 ....wow. Yes i think you do have a point here

I was an idiot and watched Steve's video first and was almost drainwashed into forgetting my electrical training. Thanks for reminding me of the mechanical engineering failure in his argument.

Great job !! loved it !!! always learning from you, thanks

Physicists talkin about Mehdi: He's too dangerous to be left alive

@strongback6550

2 жыл бұрын

Good luck, he is immune to electricity

Mehdi- proud owner of 10,000 Canadian cents and discovered the Mehdi constant.

@douglasparkinson4123

2 жыл бұрын

Mehdi Constant. We capitalise both the name and the word constant.

I really appreciate the humor you can find when dealing with your "rival" .

ill explain whats happening, its basically a "floating fulcrum". imagine a seesaw. the kink that occurs in a ball-chain when u TRY to bend it acts as the fulcrum on a seesaw . now imagine every 1 second, the right side of the see saw grows a foot and presses down: each second this is happening will create extra lift on the left side with each press. so you see, the spaced weights being lifted from the pile are creating a frequency, or basically a tap of the seesaw, so you keep tapping with more and more force and the left side will raise the "floating fulcrum" higher and higher.

I watched Steve's video first. He completely convinced me. Then I watched Mehdi's video. He also completely convinced me. So if I had to vote I'd be 50.1% for Mehdi and 49.9% for Steve. Sorry, Steve.

@ElectroBOOM

2 жыл бұрын

I take the win!

@SteveMould

2 жыл бұрын

Damn that's tight!

@OfSheikah

2 жыл бұрын

getting down in this reply section in particular just further makes me feel like this video is really owned by two youtube channels... Furthermore to watch this discussion vid feels friendlier than on veritasium's more formal feel of him discussing with that other person that agreed on a total 10,000 buckos bet

@a.vignesh4562

2 жыл бұрын

I have one doubt he upload just now but he comment 6 hours ago

@rakeshmaji8343

2 жыл бұрын

@@a.vignesh4562 time travel!!

I agree with your assessment of the facts. The momentum is conserved as the "chain" goes alongside the friction caused by the "flowing" of the chain, and demonstrates a unique effect regardless of it's vertical or horizontal orientation, and provides a strange question to those of us interested in physics. Truth be told this isn't the last video that I'll be watching on this subject, but I do solidly agree with your side right now. Thanks!

I have to agree with you on this one. Your explanation makes more sense to me with the forces involved.

The 2d representation of moulds effect was great

@bugz000

2 жыл бұрын

kzread.info/dash/bejne/mXlhlaOpdMzWpMY.html

@proftony4403

2 жыл бұрын

Its amazing how a minuscule change in perspective changes things🤯

@laundromast

2 жыл бұрын

@@bugz000 no

@DickStahl

2 жыл бұрын

It's funny because it's true.

@bugz000

2 жыл бұрын

@@laundromast it is the mould effect in extreme conditions :) it does not need to be a chain, a chain simply makes it easier to achieve at lower speeds, it is the very same thing mehdi shows on the floor idk what the other guy posted, so i figured i'd at least put an on-topic yt link up... did you even watch it?

11:28 shows a perfect "Mould effect" loop in Steve's clip with the rigid linked chain. The effect is smaller than with the beaded chain but still very much there. It does seem to "reset" whenever the chain snags and takes a bundle of tangled chain over all at once.

@truthsmiles

2 жыл бұрын

Totally agree. Even in Steve’s video it’s there. I was wondering if he was blind or just ignoring it.

@PLxFTW

2 жыл бұрын

@@truthsmiles Might be a bit of confirmation bias or maybe he didn't watch the video so the angle he was viewing from was the problem.

@MarcusTheDorkus

2 жыл бұрын

I noticed the same thing. It was clearly exhibiting the effect, but it kept appearing and disappearing as the chain slowed down and sped up from the links not being able to glide across each other.

@rogerrabbit80

2 жыл бұрын

@@MarcusTheDorkus And, wouldn't the leverage from the rigid links Increase the amount of rise, if the leverage against the surface was a major factor?

Hey electroboom, it's the whip mechanic, while whipping a whip it'll curl until the end breaks the sound barrier causing the sound, it's a sin wave in natural form

This is always how I've thought this worked as well. This explanation makes more sense to me.

After watching this, I think Mehdi could help solving the Nuclear Fusion challenge 😎

@sammysam3136

2 жыл бұрын

Um no thanks I would rather have a nuclear meltdown than a fusion meltdown 😅

@0Blueaura

2 жыл бұрын

@@sammysam3136 fusion reactor cant meltdown, and a nuclear meltdown will leave long lasting live problems and nuclear waste, radioactivity and other crap..

@giantmastersword

2 жыл бұрын

He's overqualified

@TwoWholeWorms

2 жыл бұрын

@@0Blueaura If anyone could make a fusion reactor run away with itself and melt down, it's Mehdi :p

@GamerX-2000

2 жыл бұрын

HI MARS!!!! I love your videos!

"Its a mechanical problem, so as an electrical engineer I an overqualified..." lol

@charlesh6519

2 жыл бұрын

I work with some electrical engineers that have this mentality!

@mcboat3467

2 жыл бұрын

@@charlesh6519 true

@hellzaid

2 жыл бұрын

Damn , that hurts

@charlesh6519

2 жыл бұрын

@@hellzaid Ist not all of you engineereds that are that way, just some!

sir your imagination and knowledge is on another level.

Your theories are the most fleshed out and fairly tested. I've watched moulds video and yours and, while his is interesting and poses very good questions, yours is much more convincing, because you isolated the phenomenon in 2d and tested so many variables.

Practical demonstrations instead of formulas, LOVE IT!

@SherinFunmes

2 жыл бұрын

He is a different kind

@BartiX-on4wn

2 жыл бұрын

I might be wrong, but it seems like it's your first comment on your channel (you have never commented from this channel before)

@astronichols1900

2 жыл бұрын

@@BartiX-on4wn I might be wrong, but it seems like shorts are short pants (pants that have been made shorter)

@BartiX-on4wn

2 жыл бұрын

@@astronichols1900 I might be wrong, but it seems like you've beaten me (you used a good argument)

@ukmaxi

2 жыл бұрын

I mean, you need both ultimately.

I decided to study to become an electrical engineer and I immediately grew a unibrow and got a thick accent. Is this a blessing?

@Aj-tu4gv

2 жыл бұрын

Yes

@MadScientist267

2 жыл бұрын

It seems to have also had the effect of generating whack KZread comments

@tangyonions

2 жыл бұрын

@@MadScientist267 ik what even is this comment section, still a blessing tho

@funtechu

2 жыл бұрын

It's a sign!

Gotta love someone doing actual science and getting actual data.

4:43 could have just said "at home, we have a glory hole" On a serious note though this explanation does make sense. The 2D test was also brilliant

@colmreynolds9869

2 жыл бұрын

Yeah but, his demonstrations only work without gravity. The shocking effect of the fountain is that it goes against gravity. His don't.... So there must be something more to it. Steve has an explanation. Electroboom has a test that only works without gravity. 😕

@harleyspeedthrust4013

2 жыл бұрын

@@colmreynolds9869 yeah I saw Steve's response not too long ago. I am on team Steve now - his explanation does make sense and the distinction between the fountain rising and the fountain falling is a very important one

1:05 that prank on your daughter is the best KiwiCo sponsor spot I've seen!

I don't care about the chains, that "central vacuuming system" is insane, I've never even heard of one before. Definitely adding to my build list

@faokie

2 жыл бұрын

It's way better than the one in my house. I've got pipes in the wall and a big central pump, but they only provide suction. The hose is external and I have to lug the entire thing all over the house. I used it for a while when I first moved in but now I've gone back to using a normal vacuum.

@guyonearth

2 жыл бұрын

These used to be fairly common. They've been around for many years. Very common in industry, especially woodworking.

@tier3rd375

2 жыл бұрын

Central vacuum systems are nothing new. They're seen more in commercial buildings than residential homes. If you want a home with central vacuuming, you're better off having it installed during construction as it can be a pretty pricey upgrade to tear open the drywall and run pipes for it.

@ThisNameWasntTaken

2 жыл бұрын

how does this thing work? does it just constantly suck?... like me in life...

@JensAndree

2 жыл бұрын

@@ThisNameWasntTaken There are many different versions. The cheapest "central vacuum cleaner" (as they're called here in Scandinavia where these were almost standard in every house built in the 80's) you turned on with a switch (like a lamp). Others have a simple microswitch in the lid/hatch, or just some pins in the lid that lets the electronics know it's been opened. There are also wireless variants that via radio signals to start the vacuum, either automatic or manually. Today they aren't common because they are much more expensive to install than buying a standard vacuum cleaner, and when they break many just buy a new much cheaper vacuum cleaner instead of repairing the central one. Industrial variants are way beefier with 3-phase motors and frequency control so that several hoses can be active at the same time. For home usage though it's not worth the installation cost, although modern ones with HEPA filters doesn't require an outlet hole to be drilled in an exterior wall to let the air out since they sufficiently clean the air to be let back into the house. Fun fact: many kids toys got "disappeared" when they were playing next to these wall outlets and curiosity made them lifting the lid... Anything close to these outlets and was small enough vanished - and mum/dad had to go on a retrieval mission in the big bag of dust and nasties... ;)

it took me two years but if you look at his whiteboard really closely, you can see some traces of drawn and earsed arrows. There are also some tiny gaps between the arrows showing his retries for a good clip.

I watched the other video first, and I have to say I was thinking similar to how you described it. It makes more sense this way.

“It’s a mechanical problem so as an electrical engineer I’m overqualified” Hahaha

@MartinMaat

2 жыл бұрын

It is the classic pecking order in engineering: electrical, mechanical, civil, business.

@thegeeksides

2 жыл бұрын

@@MartinMaat software engineer? hahaha

@MartinMaat

2 жыл бұрын

@@thegeeksides 🤔 Have you been Googling?

12:44 "Loud noise means much banging" ~Electroboom 2021

@ujjwal2473

2 жыл бұрын

oww senpai that hurts :/

@parthgulati4675

2 жыл бұрын

😂😂😂😂

@Oscar4u69

2 жыл бұрын

can confirm

Already posted this on Steve's video but thought I should post it here as well: I would think that you can approximate the fountain with a pulley. Meaning tension on one end is equal to tension on the other end. When the "pulley" gets going the force you have on the descent is equal to the mass of the chain on the descent times g, so, very small. As more beads get pulled form the upwards to the downwards the mass on that ends increases, which in turn increases the tension. As tension increases on the descent due to mass, tension on the ascent needs to be equal. Thus pulling the beads higher and higher before they curve. This would also lead me to theorise that if your chain hits the ground and you still have beads left, your Apex will stay exactly where it is until it finishes spooling out. The "pulley" idea is also supported by your statement regarding the max bend radius the chain has creating the rigid body.

this is a lot more like how I always thought it worked. great explanation too thank you

Mehdi: "it's not gonna be a funny video" The video: literally oozing with hilarity

“Mehdi constant” sounds pretty cool, that should be the official term.

@kain0m

2 жыл бұрын

Trouble is, 80% of People would spell the name wrong.

@kurumachikuroe442

2 жыл бұрын

Medi Constant is still pretty cool

@nicknevco215

2 жыл бұрын

thought the same once he said it

@hammyboigaming904

2 жыл бұрын

@@kain0m Hopefully no one mentions "Medhi" and spawns in a monster...

@tf8896

2 жыл бұрын

Sadaghdar’s constant

it doesn't even need to be a chain. a chord, rope , or cable would work just as well.

@codemiesterbeats

2 жыл бұрын

yea this is what I wonder is if a different flexible medium will work. I don't think it is exclusive to ball chain.

I'm waiting for the next part for a full closure!

Forget the chain, that vaccum is amazing! I didn't know they made those

@dogwalker666

2 жыл бұрын

It's a technology from about 100 years ago.

@puck4801

2 жыл бұрын

How have I only just now discovered these exist?

@pvic6959

2 жыл бұрын

@@puck4801 we're not all rich people who can afford in wall vacuums lol

@MeriaDuck

2 жыл бұрын

I think I've only seen them in office buildings

@navithefairy

2 жыл бұрын

I've seen them before but not with an integrated hose, just the connection in the wall where you plug a hose in. Big vacuum machine is down in the basement.

I know this makes me the "idiot impressed by shiny things",but I love that central vacuum.

@werner.x

2 жыл бұрын

Central vacuum cleaners were in fact, how the thing started after it was invented - it was considered unhealthy back then - and it still is - to have all this dust around that passes the filter and makes vacuuming a house the best source of dust keeping you busy.

@reidflemingworldstoughestm1394

2 жыл бұрын

You wouldn't if you were wiring that house.

@captaincanuck4576

2 жыл бұрын

@@reidflemingworldstoughestm1394 I don't mind installing central vac. I leave it for when I'm done pulling wire.

@nyogthatheone4743

2 жыл бұрын

@@reidflemingworldstoughestm1394 I mean shouldn't it just be a compressor and filter in the garage or somewhere? 3 or 4 wires for the motor, disconnect, all that. Couple wires per "station" to control solenoids, also in the garage? Not too bad. All the "magic" happens inside the vacuum itself's wiring? Then again I've never seen one of these in my life so idk.

@captaincanuck4576

2 жыл бұрын

@@nyogthatheone4743 well he's talking about having to work around all the pipe,and retractable hosing. Let's say you have to wire a house with plumbing,HVAC,and a central vacuum already installed,it can be very hard to work around everything.

Jesus Christ.... Your daughter is so old now. felt like it was yesterday since last time I saw her in here and she was barely out of toddler stage. Time sure flies...

"It is a mechanical problem, so as an electrical engineer I'm over qualified to deal with it" LMAO. That is exactly the kind cheap shot that you can hear all the time in a maintenance room among technicians.

"Loud noise means much banging" Intentional or not, I thought I'd be old enough...

@thaer_me

2 жыл бұрын

Lol

@CTMKD

2 жыл бұрын

lmao

@onerandombruh

2 жыл бұрын

Bruh...

@BartiX-on4wn

2 жыл бұрын

@@onerandombruh r/usernamechecksout

I feel like the symbol for Mehdi’s Constant should resemble a unibrow.

@FazJaxton

2 жыл бұрын

Ω!

@banananarwhal6591

2 жыл бұрын

~

@davejones542

2 жыл бұрын

yep

@aliciabaumgartner1406

2 жыл бұрын

Mehdi's constant: ⁀

@Kitty-SicarioSan

2 жыл бұрын

@@aliciabaumgartner1406 perfect lmao

It works because Conservation of Momentum exists. Its the same concept that makes a flywheel or a bullwhip work; the operator puts in the work, the conservation of momentum is universal and this is why your 2D version also works. You are right, and Steve as much as I like him is wrong. Signed (Just some guy on the internet)

Thank you for a most entertaining video!

To me it seems related to the mechanics of a whip, this change in direction looks like wave traveleling down the line (actually up in this context), like when you make waves in a rope

@eugenetswong

2 жыл бұрын

I agree. With the vacuum tube and every chain, there was a whip lash effect at the end.

@the_soghi

2 жыл бұрын

it is that effect. just that a whip is made in such a way that those forces are multiplied at the tip for other reasons such as decrease in mass ant etc

@autodidact7127

2 жыл бұрын

This is literally whip physics. I don't see why they don't see that. Medhi is 100% correct. Mould will be known for how he got this one wrong.

@FinFET

2 жыл бұрын

My take about the forces: the chain has to do a sharp turn, but it resists it, it wants to stay more or less straight, so it springs a bit back, taking away some energy that was applied by the pull of gravity (or something else). This is why the regular chain doesn't work that well, it cannot spring much, only when there is sufficient tension. Starting from the bucket, there is a force pulling the chain up and at the same time giving it some angular momentum, at the peak it has turn horizontally and then down, in the opposite direction of the first pull. This is identical to giving a strong up and down pull on a rope, you get a wave in the same shape, like a pulse.

@selvestravicius

2 жыл бұрын

Wanted to say that. Looks like whip to me.

the overly complicated "lever" explanation always just felt wrong. It certainly looks like a momentum related phenomenon. I am siding with you on this one.

@soklot

2 жыл бұрын

That's the way i always thought it worked, didn't think about it either, it just feels natural. That doesn't necessarily make it true though but still. This also works with rope so the ''leverage'' explanation seems completely wrong.

@joepelletier6694

2 жыл бұрын

The lever explanation is momentum related, it says the extra momentum came from the lever kickback instead of from FREE ENERGY.

i m so impressed by your smartness !! Steve is following the professor and his nerd ..

love the collaboration funny as well

"The edge of the container is a lie" - Mehdi 2021

@CTMKD

2 жыл бұрын

mehdi

@BartiX-on4wn

2 жыл бұрын

@@CTMKD mehdi

@canadianradiochemist4465

2 жыл бұрын

@@CTMKD Mehdi*

@aniksamiurrahman6365

2 жыл бұрын

​@@CTMKD There, corrected. Given that he's a parsi (and I'm a Bangali), I know this is how it should be, but his pronounciation got me confused.

@reneeee891

2 жыл бұрын

@@aniksamiurrahman6365 are you mehdi's long lost brother?

the most impressive thing here was discovering a "central vacuum" system existed lol

@MrMattumbo

2 жыл бұрын

Yeah I'd like to see a whole video just about that!

@urbannanni5864

2 жыл бұрын

My friend has one in his house. The suction motor and fan exhaust are downstairs, along with a huge dust container and filter system. The only thing you hear is the sound of air rushing in to the tool. There's also a special plugin for electric power to the beater bar in the tool. When you're done, unplug the electronics and you're done.

@pungskum

2 жыл бұрын

What? It is supercommon here in Sweden

@sapincher

2 жыл бұрын

@@pungskum Never heard of it at all here, USA

@tomhsia4354

2 жыл бұрын

@@sapincher I've seen it a lot up North in Canada.

hey Medhi i think you should try the high voltage wood art with some of the wood left from that gate video. Its really cool 🙏

doubt anyone will see this but this whole phenomenon is in my opinion, the simple conservation of Velocity within deltaV. All types of chain are subject to pull-forces on the front of each link in directions that cause that link to need to move, while also pulling on the link behind it. Regular link chain even has the force of the links rubbing on each other as they try to turn. Rope (and vacuum hoses lol) also are subject to forces that resist change in direction but chain is more pronounced because of those pivot points.. So basically the loop and its rising is the resistance to change in Direction being higher than the resistance to change in speed. When acted upon by a force while needing to make a 180 turn, the chain will travel faster around a big loop as it is easier than turning hard at a slower speed.. Basically its simple resistance to change in direction

"It looks like it's made of friction" 😆

@cleanlens

2 жыл бұрын

hm

Mehdi - "I got a bunch of these for my daughter to try- " Daughter - *Confused Screaming*

@dehphosgaming7928

2 жыл бұрын

the comment fits so much to your profile pic lol

@nathanielsantana403

2 жыл бұрын

Where's the lamb sauceeee!?!

@arandomcat8346

2 жыл бұрын

@i Play Sometimes the guy who spams and likes his own comments

@vedantajaitoo473

2 жыл бұрын

@i Play Sometimes please dnt post sh*t here

The explanation is very simple and everyone seems to have missed it. The only forces that need to be considered are gravity and the tension in the chain. To work well the phenomenon requires a chain without stiffness that is nearly frictionless in motion but lumpy enough to prevent transmitting tension through the pile in the beaker. The fountain effect is then an inevitable result of the chain falling. The speed of the moving part of the chain is the same throughout its length except where it is starting to rise and unwinding from the pile. As it starts to fall it accelerates and the tension pulling the chain in the beaker is the weight of the falling chain below the level of the pile. This means that before it reaches the floor the force pulling the chain upwards out of the beaker is many times more than the weight of chain being pulled, so it accelerates upwards very rapidly and cannot change direction quickly enough to avoid rising above the rim. The only forces acting on the chain as it rises are gravity and tension, which acts along the chain. The tension is much greater than gravity and only acts downwards on the part of the chain that has passed the peak. The idea of the beaker and chain pile providing a force to push the chain upwards is obvious nonsense. All it does is stop the chain falling through the bottom; a stationary body does not accelerate another body upwards except in bouncing. When the other types of chain fail to produce fountains it is because the resistances to motion slow them down too much.

@nightjaronthegate

2 жыл бұрын

@Jessica💋 Sweety Hotgirl - Vlogs No, I got it wrong! The chain needs limited flexibility so that it can't change direction very quickly, otherwise it doesn't rise above the rim. If it has no stiffness it only need to have very small length of chain changing direction at any time so the weight of the falling chain can produce very high acceleration. It needs some springiness as it approaches its maximum "bentness." That makes it push back like a pole vault pole, and this effect operates both in the beaker and in the fountain. It is like bouncing. The potential energy of the falling chain is not all converted to kinetic energy; some is transferred to the parts of the chain that are being bent, and then used to kick the chain upwards and over the rim.

3:11 So effectively it's... Funnily enough... A chain reaction!

That 2D representation was absolutely amazing... work of a genius there!

Came here from Steve's channel prepared to stick with his explanation, but I must say you convinced me.

I was just rewatching your video on the chain fountain and it occurred to me that I didn't see a good explanation of how the effect builds up. So I had a small thought experiment. Suppose that you have a very long chain lying in a straight line on a (also very large) table. Further suppose that there is zero friction, and that the chain can bend extremely well. Now we take the tiniest part of the chain and let it hang down from the side of the table. Gravity will start pulling the chain down, because there is no friction to keep the chain on its place. In the beginning the speed will be low and thus the chain will in the beginning fall down without a serious radius. But as speed builds up, you would also expect to see a parabolic curve to build up (horizontal speed of the chain, and the vertical gravitational force). However, in the mean time the part of the chain that is already falling has gotten some significant mass, and this mass will counteract the occurrence of this parabolic curve: a parabolic curve would mean that the tip of the chain would not only fall down vertically, but it would also need to move horizontally. So it's just inertia that keeps the falling chain more or less on its place. And now it becomes interesting: will the chain move only horizontally and then down and then bend back to get in line with the already falling part of the chain, or will it also go into other directions to get rid of its horizontal speed and then change it into a vertical speed? It's only logical that this occurs and the result is a standing wave once you reached equilibrium. So the wave-like oscillations in the rising chain must occur, it would be strange if they didn't. I guess that your experiment with the chain that is lying on the floor is a 2D approximation of this phenomenon, and to me the form of the wave shows a striking resemblance to ringing of a square wave... Something with signals and Fourier maybe?

2D test was game changer, good work.

I've seen heavy rope do this looping thing when boats drop anchor. always thought it was cool.

@danb4376

2 жыл бұрын

Also on chain falls or manual overhead rool up doors. Once you get the chain moving fast it’s easy to observe the effect.

This solution makes more sense to me. Curious to see what the “results” are…

@hibas123

2 жыл бұрын

I think the truth lies between these two. I guess that the lever effect is just adding to the force explained in this video, making these kinds of chains just great for this experiment.

@benjamincoram7036

2 жыл бұрын

I think that neither explanation is entirely correct, but steve's is closer to the truth. as you can see with the ball chain in a jar, the arc of the chain keeps growing (I believe that this is due to the added force that was discussed in Steve's video), but in this video you can see that it stays the same size when the chain is spaced out. Electroboom has effectively demonstrated why many chains are self siphoning, but only ball chains actually have a growing arc, and this hasn't really been discussed in this video. I would argue that the reason that the different kinds of chains keep banging against the side of the jar is because they aren't getting the added force that the ball chain gives from its leverage. Steve actually showed some round beads on a string in his video that were quite similar to a ball chain, but have a string connecting them, not metal rods. These beads are self siphoning and you'd think they'd have the growing ark if Electroboom's explaination was correct, because they don't seem to have much friction, but they're not. The only thing we've really found that has a growing ark is the ball chain and I think it's because they have very unique properties that have been explained much better than I could by Steve. Feel free to disagree, I'm probably wrong at least once in this comment.

@MrD1ss666

2 жыл бұрын

@@hibas123 wrong. Watch this video again.

This is by far a better explanation. Anyone who has ever been to a rodeo has seen these forces in spectacular effect. Or even better is video of hot rolled steel wire manufacturing. Dudes are whipping steel rods thru dies going 40mph.

Medhi, you are correct. But to simplify things, the force that causes the chain to rise is the centrifugal force, which get's it's energy from the gravitational force.