Investigating the "Mould effect" | Steve Mould | TEDxNewcastle
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- čas přidán 2. 07. 2014
- This talk was given at a local TEDx event, produced independently of the TED Conferences. Ever come across something you couldn't explain? In this fascinating and funny talk, Steve Mould recounts his discovery and investigation into a seemingly inexplicable physical phenomenon.
Steve Mould is a Science Presenter with a reputation for providing expert knowledge and packaging complicated scientific ideas in an accessible way.
Steve was most recently seen on your screens as the Science Expert on BBC1’s brand new Saturday night game show, Britain’s Brightest, hosted by Clare Balding, which tested the nation’s knowledge and brain power. Formerly the Blue Peter resident Science expert, he makes regular appearances on The One Show, Alan Titchmarsh and Absolute Radio.
Originally from Newcastle upon Tyne, Steve has a Physics MA from Oxford University and works frequently with schools, giving talks and demonstrations on Physics, Maths, Chemistry and Psychology.
About TEDx, x = independently organized event In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)
"So you've met Steve. What's he like?"
Let's just say he has an effect.
Lmao, that's brilliant xD
"Liquid nitrogen and all that cool stuff" i see what you did there, Steve
That was a cool joke
*Read more*
@@-minushyphen1two379 I haven't been played like a fiddle like this in years...
13:55 /me glances up a my browser tabs to figure out what the heck just started auto playing.
Yeah it honestly scared the crap out of me
I paused the video to check if it stops :D
But glad to see it's not just me where youtube randomly decides to resume a paused video...
It happened to me at 4 AM with the audio cranked up to make his British accent easier to understand. I jumped then slammed my hand on the keyboard, hoping to hit the spacebar.
Spacebar doesn't pause youtube though. K does.
nekogod : yes it does, if the video pane is selected.
Steve - Thanks for the shoutout in the story about the plastic beads. I originally found this in a very old book of "parlor tricks" from the late 1800s using a long string of beads. You've taken a simple demonstration and turned it into something amazing. That's the Mould Effect.
Yes that's exactly what it is. He presents the science in a mind grasping and inspiring way! Scientific Charisma = Mould Effect
Thank you Mr. Spangler for all you've done!!!
I can feel his happiness pouring out the screen when he heard the words 'Mould effect'.
I've been conducting "mold effect" experiments in my fridge for years.
6 years?
He's got an effect named after him, and meanwhile, Matt Parker just has things that almost work but not quite named after him.
One of the best CZcamsrs to date. He said "this is where the story ends", but really its where his story begins....
I love the "Fake and gay." comments.
What is the meaning of these comments. Can you please explain?
@@shambosaha9727 they’re insults
laughed at the joke about standup comedy being hard and difficult, but no one laughed
4rr0ws because it was hard, but i can assure you its possible with one hand
@@newCoCoY6 oh boy
Why would they? I don't think that's a joke. People with a talent for hard sciences often struggle with social skills.
it is definitely a crowd with zero social skill at the beginning of the talk.
@@francobianconi9227 Dude he was a stand up comedian and you're talking about the lack of social skills
Raw denim and full pockets. That’s a power move. Watch.. and learn. This man commands a room.
5:40 that lady with the 'woooww' xD
6:08 her clap was weird
@@notflanders4967 xD
@@notflanders4967 Mould tends to have an intoxicating effect on others, drive safe guys.
13:55 this scared the crap out of me
Potato on a stick yo those potatos on sticks are the bomb
Me too. I was all “wtf started playing automatically on my phone!?”
Every time I see Steve, I wonder... Has he slept between the last time I saw him and this video?
“That’s how you do physics by the way, if it’s too hard imagine something easier”
Path of Least Resistance? I see what you did there Steve!
Gustav Streicher Thanks Gustav!
Principle of least action
Amazing. I hadn't realized EU was the first to film this slo mo. I had seen the original video shared around social media a lot, and had assumed it was a well-explained scientific fact discovered in the early Newtonian days. Glad to see things as weird yet as cool as this can still remain undiscovered today.
KC Sutherland 40-45 yrs old they were sold to all the children in America to play with. This is not new. He's taking credit for something that young people just didn't know about since they were busy playing with electronics. These chains were sold with the intention of doing this. We all knew about it and we didn't even have the internet or youtube to pass the information around. It makes me sick that he thinks he discovered something.
He may not have discovered it but he started a discussion and brought it to a broader audience, you didn't. So stop being jealous.
Katie Kat "It makes me sick..." X-D So funny...
children were throwing balls before gravity was discovered
"Knowing that they do this" and exploring _why and how_ they do this is the difference between a child's toy and a scientific exercise.
5:40 "wow"
Ein Effekt der Trägheit, die einzelnen Kugeln werden über die Kante des Gefäßes nach oben gerissen (Impuls) und finden erst nach beenden der eigenen Trägheit den Weg nach unten. Da das ein wenig dauert entsteht dieser Effekt. Je höher man steht um so stärke die Kraft (der Impuls) die die Kugeln aus dem Glas reißen und daher auch um so stärker der Effekt.
SmarterEveryDay brought me here... indirectly
"I don't even think Einstein has an effect."
Well, he does have a condensate, but he has to share it with someone else.
HOW ABOUT THE PARKER EFFECT?!
Nick Pollard lol
Delta on curved Spacetime it was a parker square of an effect
Parker^2
This meme needs to be revived! Make it reach the holyness of memehood! by which I mean we need to make it a mainstream meme! Im a parker^2 supporter!!!
Parker? As in Parker square?
In the future, it's gonna be hard in school to have a surname like Parker.
Was at a Masterclass at Cambridge today where Warner explained the maths of this very effect himself. Very interesting indeed
the audience reaction is priceless
First thing that the metal beads reminded me of was 'Hey, I kinda did that last night while vacuuming & yanking the power cord of my vacuum, to free it up from a table leg".
delightful, original, entertaining, educational and stimulating, thank you for posting this
The idea that metal beads become inflexible on application of a larger force was literally my first thought when he showed them rising up. I have spent actual hours just playing with metal bead chains and trying to meet two beads which are only one away from each other. (And if I'm being honest, I like the scraping noise it makes when I can't)
Seeing the self syphoning was so fun! And the whole story reeks of a Physics geeky scientific business. I would have never guessed they would rise more if the height increased!
Steve, you're wonderful!
This guy just makes me smile!
6:10 - finally gets a clap! This audience tho...
"It turns out I really misunderstood CZcams."
Another testable prediction of the theory as described is that the jar should weigh slightly heavier as the chain is falling than it does when the chain is at rest in the same position, e.g. if it's just draped over a hanger at the same height and held in place. Has anyone tried to measure this discrepancy?
The jar is also getting lighter as the chain is emptying out of the jar. Tricky to measure that.
@@DaveSpathaky But I think it can be measured until the chain hits the floor. :-) Though I personally feel that the weight should be the same.
The best way to test if the jar gets heavier would be to pull the chain from the beaker in zero gravity and see if it moves backwards, Steve explained this in his later video on his channel. Apparently, it's hard to get ISS scientists to pull a chain out of a jar. So instead, he laid the chain out on a table so there was no gravity pulling the chain in the direction of the pulling of the chain, and the chain did, in fact push the rest of it backwards. So, cheap proof.
This perpetrates reality and is of a homosexual nature.
Win-win.
That took me a while but it was worth it.
> perpetrates
that word, i do not think it means what you think it means.
*perpetuates
That doesn't make sense in the joke. This "defies reality" is what should've been chosen unless the phonetics of perpetrate/perpetuate is somehow part of the joke. And now it's not funny anymore
I have seen your videos about it, but i had no idea such a difficult process was behind it. Well done:)
When a physicist needs to explain chemistry and finds a physics problem that ends up named after them. Science is weird.
MOULD EFFECT!!! YEAH!!! :D
who is here after seeing him and electro boom discussing about the mould effect in 2021?
Very entertaining!
Finally understood the Mould effect.
So will it continue to rise until the first bead hits the ground?
Until the chain hits terminal velocity ;-)
9:01 Dude is like *Naah a paper* !¿
I'd like to see a slow motion video of the different beads impacting the floor! I predict the metal ones will stiffen and travel around more.
the pew pew at the end overdid it a bit
Must feel really great to be part of history
Go ahead, science. Explain that one.
We will be waiting.
We’ve got the Mould effect and the Parker square
That ending very nearly didn't land with me, until you sneaked "Mould effect" in at the end :-D
Best TEDx
its the speed the beads have on their way up from the pot that makes them go above the top, they have angular momentum going up from being pulled out and the speed the chain is falling/ rising determines the height it goes over the top.
The dubstep thingy was weird and unexpected but also funny :D
Oh and notice at 14:21, the old guy is not amused xD
I also noticed him
@@anandsuralkar2947 He is a noted "sit down!" comedian
5:40 WOW!
when i heard the dubstep i thought it was a popup i couldnt see xD
dudee.. u re perfect 😂😂😂
I have a question, does the Mould effect start before the first beed of the chain hits the ground or after? Couldn’t help but noticing that the slow motion footage didn’t include the ground in the frame and that the higher the drop was, the stronger the effect appeared to be in each demonstration.
Steve talked about this in his video, it starts before the chain hits the ground, so it doesn't get a pushback from the ground.
ys man! vibe
The Mould effect is from the transferring of momentum between the beads and the rigid rods inside of them. As the momentum is transferred, based on the speed at which they pour out (Weight+height, the farther they fall the faster) as the rods lock in the balls as the string is pulled it creates the rising and spiraling out of the jar. In other words as the balls are being pulled out of the jar, the rigid connecting rod "flicks" the next ball in the string UP rather than PULLS it straight out. In being flicked UP, the ball catches air, and momentum forces it into the air rather than straight out of the jar. If you focus a high speed camera directly at the balls as they are being puled out and follow what i just said it will make sense.
So they explained the way the spheres and links behave by explaining how rods and links behave!
And now the debate went hot again
I could explain why it's happening. But I guess someone has done it already.
Thank you, it was very interesting.
I just continue watching the video and saw you really know the explanation. Then why you say you don't...
twist: it was actually a clip from a video about a _mole defect._
oh that's brilliant
That bead/chain thingy was freaking awesome!! Where can I get one?
Any hardware store has the bead chain. Buy it by the yard or metre depending upon your location.
If Cambridge is correct then the same thing would also happen with an anchor chain, no? If the or mass of the balls is increased does that affect the height of the curve? From your slo mo video there appears to be a Corollas Force applied to the system. What is the velocity of the chain at the apex? Does it change over time. What if the chain were able to reach it's terminal velocity?
This is hilarious that crowd was horrible
7:44 "I followed the chain [...] but I don't think they got to the bottom of it." I see what you did there
As an engineering student i just thought and felt that its..just momentum conservation.
As chain has constant length l
Thus its falling rate should be equal also while coming out of the container..with same velocity as
L1=l2
So falling rate should be dl1/dt=dl2/dt
Soo thus the for velocity of raising of chain is same as falling this momentum cause chain to raise due to its vertical momentum..
But yeah i m pretty sure i am wrong but ur explaination makes more sense..mine should be wrong bcz people would have already said that
I am just a dude in new Mexico but I'm thinking that maybe it isn't the surface it sits on. I imagine that the increasing weight of the chain falling over the edge of the pot increases impact force so drastically that one or a few bounce high enough that it begins to pull the chain from both sides of the mould arch. A continual pull down and a really intense bounce up that never truly reaches its apex at the same time due to the simultaneous drop. Maybe the energy transfers through the chain so balanced that it creates that very fascinating effect. Imagine taking this chain and placing it flat then trying to make an arch roll through it. You initially pick it up above its sitting point and as your still rising you slam the high end of the chain to the floor and it will whip into an arch motion that continues until the energy or rope run out . Now imagine the first end that you throw down never hitting the ground, the whole chain staying in one confined area opposed to a long straight line and add all off that momentum into a bounce that makes the other half of the chain lift at the same time. I'm no scientist but I'm sure if one read this they could possibly turn theory to law and one day find a use for this.
The mould effect, nice
My thought was to test it by putting the chain of beads on soft foam rubber. Presumably they'd be able to push down successfully and they wouldn't produce a fountain. Much cooler to have a long drop and a much bigger fountain.
Science jokes this amazing... never heard before
Is it just because of the momentum of the beads leaving the jar? Does it work with anything else? Does plastic not exhibit this at all? Does the theory explain why plastic doesn't work?
The public lecture halls at Oxford, Cambridge and Newcastle look exactly the same.
Entangled.
What is the velocity of the beads?
Didn't find the Mould Effect song at my music provider... :-(
Wouldn’t it be the rigidity of the beads hitting the ground that would create a shock up the rest of the coil? The first few inches hit the side of the container creating the upswell; then once they hit the ground pushes it not only upwards but in wilder directions.
Then gravity would also create a secondary effect to create more tension for the rigidity to work off of?
Beautiful story, It'd be a shame if an often electrocuted iranian got skeptical about the explanation...
Say "brilliant" again. Say "brilliant" again! I dare ya! I DOUBLE dare ya!
Oh it is the Tau guy.
14:01 "Which is dubstep"
Yo, what a cool guy!😅
My initial thoughts were that the longer string of beads that were accelerating downwards applied a strong force towards the beads (short string) being pulled upwards, thus the upward acceleration. So by argument, the higher he raised the beaker, the longer the string of downward accelerating beads would be, thus the higher the beads would fly up. I didnt think that the beads were pushing on the beaker and that the beaker was pushing back.. but I guess that could be verified experimentally, by resting the beaker on a weighing scale, to check if the force was really present.
Stigler's law of eponymy in action: Spangler observed it first
spangler used plastic beads with fully flexible links, which just pour out (like the molecules he was trying to simulate).
OK. So because it cannot go down on oposite side, it is kicked up on main side. Yes, good point. Now I understand it.
9:58
I vaguely remember a toy when I was a child, it was two wheels within a housing, like a staggered baseball launcher, with a rainbow string, quite light, and soft. The wheels would cause the string to be locked into place just like with these beads here, the thing is, it seems like they have focused alot on beads, when this phenomena is not exclusive to beads, and as it can be done with a loop of string all in constant motion, i wonder about their theory a little more
Thought Experiment: Since the height of which the chain jumps out of the beaker depends on how far the drop is.... What would happen with a REALLY long chain, that REALLY strong, that was dropped into a huge gravitational pull (such as a black hole)? Would the chain explode out of the beaker super high?
He's so cute 😘
Dr. Biddle is in the audience
You add your energy into the chain by pulling it, starting the effect.
The effect is when there is enough weight outside of the beaker that the falling chain has enough energy pulling the rest of the chain up the lip of the beaker
Add some centrifugal force (does it exist?) for the bow.
How far would the chain have to fall for the top to enter space?
Metal beads rise higher because of their weight. The effect is greatly induced by the fact the beads have a minimal radious and the velocity of the movement pulling down with the original force being vertical above. You can do the same thing with a huge, heavy chain fed over a wall.
So can you demonstrate that, or link to a video showing the same effect with a heavy chain?
@@fins59 Man, I have looked for weeks and can't find it. The title was something like " An unusual phenomenon" or "Odd effect I can't explain". A dude just said " this is a weird thing I can't explain" and started a long logging chain falling over an embankment/ retaining wall. When it stopped, he just said "well that's it...". It behaved just like the bead chain... I'll keep looking - I'd like to see it again!
so it's being pushed up by the chain's container - like to see the container on a scale to confirm. Also the rise of the chain depends on the height of the fall - sure like to see an experiment with 1000 feet of chain on top of a 50 story building. How high can it go?
The loss of weight of the chain from the jar would cancel out any "push" making it impossible to measure the "push" down.
I like this guy but God he's dying out there and it ain't necessarily his fault. I've worked literally hundreds of comic shows and there is one thing that stands out clearly - an audience can sometimes be too shy, too uncertain or too whatever to laugh and, if you don't get them to just giggle a bit before a certain point you can never get them back. Who, other than a drunk or the artists mother, has the bottle to be the first to laugh.
I have been following his channel for a while (got recommended from other CZcamsrs). It's pretty entertaining and educational. Doesn't get a lot of views, though.
Quite the opposite. I'd say he performed better than what most would have infront of a bunch of nerds.
Idt that explanation is quite right. They are assuming that the fulcrum would be the center of the rectangle, however, in reality it would be the bottom left corner.
The better way to think of it would be to imagine that rectangular object bending.......
No, because at a certain "bending angle" it would get rigid, behaving just like what's shown, which is shown for a more clear explanation.
And regarding the fulcrum, yes, it would be the bottom left corner, but just because there is a normal force pushing that point up to remain still. If there was no other force besides the previous bead pull force, it would rotate around the center, which is the center of mass.
I get why that theory would work with Rods but why would it work with spherical beads. Wouldnt the beads not create the downward force because there spherical?
I’m not quite convinced neither with the “scientific explanation”, nor with saying that the beaker pushes the rods. I rather think that the best explanation (also for the corkscrew phenomenon, not explained by the rod pushing beaker mechanism) is inertia. Once the beads start moving upwards because they are pulled by the ones already moving (initially still within the confines of said beaker), they have upwards movement, and so (upwards) inertia … give this a thought.
Yes, I do agree! I commented this yesterday also, but I think my comment was blocked for some reason (possibly due to a link to a video was inserted). If you want to see a simplified computer simulation I've made of this showing inertia is maybe the most probable explanation, please go to my channel and take a look at it (the first split second before the siphon has stabilized.
is it not just the inertia of the beads going up? the bead accelerate up because they are being pulled up, then continue to move up until they are slowed down by gravity and go back down
5:41 lady on the right edge of the screen really wain' for the experiment - 6:09 she like it, really :D
7:05 and she is in the middle of the screen and it seems she likes it very much to the very end :)
9:03 what is going on in her head, we can just imagine :D SCIENCE!
I was wondering the other day whether that flexible shower pipe would work the same on a large enough scale, after all it is made of sections which have limited flexibility
I disagree with the paper, for that to be the case the chain would have to be at it's minimum bend radius for the whole rise which it doesn't seem to be
the photoelectric effect
Guy Numbers My thought too! Unfortunately it wasn't labeled the Einstein effect. But hey, he got a Nobel prize.
Wait so Einstein basically invented solar panels?
Yes and geiger counters. That's what he got his first Nobel prize for.
Proper explanation for the Mould Effect.
I'm not satisfied at all with the scientists explanation of the causes of the "Mould Effect". Here is what I think is going on:
Any length of static chain hanging from the container is obviously putting a net force on the lip of the container equal to the weight of the hanging chain plus the short piece of chain rising up to the lip. Once the chain is is free fall there is no weight at all being contributed from the hanging chain - the only weight comes from the small piece rising from the container to the lip. But now we have considerable centrifugal force from the relatively sharp turn at the top as the chain changes direction. This force easily overcomes the small weight amount of the rising length of chain. Steve - we can cut a deal - call this the "Mould-Nebauer" Effect and no no more correspondence to be entered into (wink). Love your channel - keep them coming. John Nebauer