I forgot to say, the puzzle knot by Langer is 9_46 (9 underscore 46). The sponsor is Ground News - give it a try at ground.news/SteveMould. If you sign up through my link you’ll get 40% off the Vantage plan which gives you unlimited access to every Ground News feature. Your subscription directly supports Ground News on their mission to make the media landscape more transparent.

@jaspyjiindust.9227

Ай бұрын

lol your comment was written 18 hours ago according to youtube. but nice video

@stevendavis3872

Ай бұрын

Okay, normally I don't really pay attention to the sponsors, but this one actually has got my attention.

@miil558

Ай бұрын

You are (clearly) not autistic, but your character has a lot of positive aspects that autistic people also have.

@conorstewart2214

Ай бұрын

@@miil558 what do you even mean by this?

@miil558

Ай бұрын

@@conorstewart2214 When you are looking at the qualities of a lot of autistic people you can see we have much attention to detail, methodical approaches of problems, skills in observation and absorbing information. Those are positive things that Steve Mould also has. Did I say something controversial? English isn't my first language so I'm sorry if I did.

"But it's not stable, and if I let it go it ends up touching itself again" feeling personally attacked by this

@amytysoe2292

Ай бұрын

we're right back to matt parker's 'you can't just show up and start cranking it'

@MacroAggressor

Ай бұрын

Marvin the Martian strikes again!

@TazwaarAhmed09

Ай бұрын

i was about to comment the same 💀

@aalhard

Ай бұрын

Remember Marvin!

@v_lad8559

Ай бұрын

“Marvin the Marion”

"Marvin the Martian" LOL

@mblend27

Ай бұрын

But with 3 feet 😜

@JackFate76

Ай бұрын

That’s what I’m calling it from now on.

@dr.kraemer

Ай бұрын

@@mblend27 "It does still have a Marvin, though." (6:35)

@dr.kraemer

Ай бұрын

@@JackFate76 that's one way to preserve a single lifestyle.

@fxbear

Ай бұрын

It’s a testament to my mind that I saw something else

I was always fascinated by these when trying to pack my "2 seconds" tent at the end of a festival. Turns out, the time you save when it "assembles itself", you really invest at the end, learning how it will go back in its bag

9:15 "... but it's knot."

@pier-lucgaranddion1527

Ай бұрын

Look at his eyes. He knew lol.

@no0ne000

Ай бұрын

But are quarks?

@Propherex

Ай бұрын

I wanted to write this!

A non self touching knot is also called a Catholic knot

@jillianonthehudson1739

27 күн бұрын

Well played

@mynt253

12 күн бұрын

Not to be confused with knots that touch smaller knots

@stevesmith7839

7 күн бұрын

Good one.

@vlvchii

6 күн бұрын

For some reason I read that as a celtic knot and I was like ok makes sense. But I've never heard of a catholic knot

@stevesmith7839

6 күн бұрын

@@vlvchii It's a joke. non Self touching.

Reminds me of how I unwrap new bandsaw blades, which come in overlapping loops: I remove the ties, and toss is across the shop.

@VinayVarsani

Ай бұрын

The only safe way to unpack it is to yeet it😂

@Vmarracing

Ай бұрын

The fun part is wrapping up the old ones in the same overlapping loops. Pretty terrifying, but ultimately satisfying.

@merendell

Ай бұрын

Thats because if you dont yeet the blade across the shop it will yeet your fingers across the shop.

@ramonhamm3885

28 күн бұрын

Spring loaded loops with teeth are scary!

@j.szelecz2530

7 күн бұрын

BONZAI ! the shopping cry of the workshop ---- WELL SAID ! ---- from Canada J.

3:38 no self control 😔

@CDCI3

Ай бұрын

Knots are teenage boys.

@justinklenk

Ай бұрын

Please do knot encourage those of us with naturally knotty minds.

@Nickakanugboy

Ай бұрын

I literally came here to point this out

@jin_cotl

Ай бұрын

@@CDCI3🤨

@junovzla

Ай бұрын

@@Nickakanugboy you did... what? 🤭

The beginning of the video I start feeling the cold sweats, and I'm instantly reminded of those window shades for cars or those quick pop up tents/sunshades that I can never figure out how to rebend to fit in the same size area.

@estherstreet4582

Ай бұрын

I just remembered that nitinol wire is also used in dental braces and my teeth hurt...

@fluffycritter

Ай бұрын

I've gotten pretty good at twisting those things back into shape.

@alankasjan6488

Ай бұрын

I just close my eyes and apply pressure. Just like magic, they fold up as they should.

@SchoolhouseTechno

Ай бұрын

Probably got really satisfied at 8:00

@djmintyfreshful

Ай бұрын

I have one of those shades for my car. I have no idea how I know how to put it back in the bag, but if I question it it will become impossible. 😂

Polite request that it would be good if you could put things a bit higher up in the frame so that they don't get covered by the subtitles ❤

@SteveMould

Ай бұрын

Noted!

@abacabdk3490

Ай бұрын

You can also move the subtitles out of the way by dragging them, I just noticed

@meazle

Ай бұрын

@@abacabdk3490Now, that's a handy tip. Thank you

@fragglet

Ай бұрын

@@abacabdk3490 this is what I did, yes

@magnusmedivh6555

Ай бұрын

​@@abacabdk3490not at the mobile app

Lord Kelvin's attempts to make mechanical models of elementary particles is one of the coolest failures in history. Also kinda tragic because he was so convinced that he could apply his engineering genius to the atomic scale that, late in life, he got a bit obsessed with trying to model the aether and refused to accept other theories. Shouldn't overshadow his many MANY other accomplishments though. Biographies of Thompson are always a good read, much recommend.

@TheAgamemnon911

Ай бұрын

Yeah... it's always tragic when being validated becomes more important than being correct.

@yawnberg

Ай бұрын

@@TheAgamemnon911 agree but there's a little more to it in this case. At that point in his life he hardly would have needed validation. Steve pointed out how lovely the idea was, even with the hindsight we're afforded today. I think Thompson was enamored with the idea of demonstrating a unified mechanics of the universe. He wasn't the first to aspire to that and he certainly wasn't the last.

@dmk_games

Ай бұрын

You seem a big fan of the guy. But I've always associated him with absolute zero. 😂

@peterfitzpatrick7032

Ай бұрын

@@dmk_games .... that was cold ... 😏

@SioxerNikita

Ай бұрын

​@@yawnbergThat is more likely than wanting to be validated. Beyond that, during that time there wasn't really a great element understanding in the first place.

3:18 I found the non-self-touching relaxed knot you mentioned not existing! I call it - the Un-knot! And there's actually an alphanumeric character for it: "°"

@wteff8586

Ай бұрын

Un-knot, or simply: not

@maynardtrendle820

Ай бұрын

I guess you already know that the "Unknot" is the name of the most trivial knot- the circle. If you didn't know, great job picking the exact terminology!😂

3:38 I can relate.

@RangeGleasry

Ай бұрын

😂

@jackbuff_I

Ай бұрын

Beat me to it! 😂

Heads up: There's a typo in the title. "is" should be "in"

@SteveMould

Ай бұрын

Thanks! Fixed now

@NlNTENDOJAPAN

Ай бұрын

@@SteveMouldheads up: there’s a type in the title. “In” should be “is”

@Artaxo

Ай бұрын

​@@NlNTENDOJAPAN omg Nintendo, stop trying to confuse Steve Mould

@baronofclubs

Ай бұрын

Heads up: There's a typo in the title. "Behave" should be "Beehive"

@solanumtuberosa

Ай бұрын

​@@NlNTENDOJAPANyuzu did nothing wrong

So a non self touching knot is a master of it's own domain?

@tonyjohnson8929

4 күн бұрын

Two weeks top.

That windows pipe screensaver just gave me a flashback. About 15 years ago i had a really nasty case of the flu, and had a fever of a little over 104 degrees and i woke up in the middle of the night. I was so out of it, that i was hallucinating that those giant blobs of pipes were coming out of my mouth and floating arou d the room while shape-shifting into different configurations

@Irondragon1945

Ай бұрын

hell yeah pipe related fever dreams relateable

@TheRip72

Ай бұрын

It reminded me of the opening sequence for series 3 of Monty Python's Flying Circus.

@acherongoon

Ай бұрын

With the Arizona (?) Teapot randomly.

@kinexkid

Ай бұрын

The second time I was hallucinating against my will was much more enjoyable, but more painful. A couple years after that I was traveling from Central CA to northern AZ to look at a potential college. I took a flight down to LA, then a flight to Pheonix, followed by a 7000 foot elevation drive. During it all, as soon as we took off on the first flight, my ears wouldn't pop and the pressure in my head was getting excruciating. We got to the city that the college was in and I immediately went to the hospital. I had a double ear infection, sinus infection, and an upper respiratory infection. They gave me some really good meds and some steroids for my asthma. That night, while in the hotel bed, I hallucinated a full orchestra performing a double concerto with violin and clarinet soloists. It was so beautiful and clear and lasted about 15 minutes. I received a $40,000 per semester scholarship there for music and astronomy, basically a full ride, but all that pain and discomfort I experienced was probably the main reason I didn't end up going there

@m.i.c.h.o

Ай бұрын

@@Irondragon1945you could almost call them… pipe dreams.

That was the smoothest transition to a sponsor I've ever seen. 10/10

Popup tents are working like that puzzle. Love it❤

@steamer2k319

Ай бұрын

Yeah--kinda laughing that people would pay just to experience the frustration of trying to put one of those away. It's all about framing I guess 🤭.

I'm enjoying the idea that in 100 years people will be using the euphemism "Marvin" but no-one can remember why.

Casual exposition style belies mastery of conveying so many beautiful concepts with ease. Thanks for putting in the effort Steve!

I have a fishing hat with mosquito net that uses one of these configurations. When not worn, it packs flat in an envelope. When you pull it out, it springs to life as a full-size hat.

Looks like Marvin the Martian you say?

@ccoder4953

Ай бұрын

Definitely a very strong, efficient shape.

@mme725

Ай бұрын

​@@ccoder4953RCE, is that you? 😂

@faramoftae

Ай бұрын

My Marvin looks nothing like that 😔

@andymouse

Ай бұрын

LMFAO!@@faramoftae

@Rthomas176

Ай бұрын

😂😂😂

The observation that the figure eight looks sort of like a tetrahedron is a good one. The topologist Bill Thurston noticed that there's a way to glue together two tetrahedra with all the vertices collapsed to a single vertex, and then edges-to-edges and faces-to-faces, such that if you remove a small neighborhood of the vertex in the resulting topological space, what you get is a space related to the figure eight knot: it's the same topological space as the space consisting of everything *outside* a figure eight knot. (It's very mind-bending to try to perceive this...) He used this to show that the space outside of a figure eight knot can be given a hyperbolic geometry, and it was a key insight that eventually led him to his Geometrization Conjecture, one part of which was Perelman's resolution of the Poincaré Conjecture. Topologists still call it the "Geometrization Conjecture", but it's a theorem as of about ten years ago.

I love your videos, Steve. I'm going through a bit of a hard time in my life at the moment and have felt sad. But your videos always enlighten me and cheer me up.

The tetrahedral symmetry is not too surprising if you know that the complement of the figure-8 knot is the gluing of two truncated tetrahedra. The edge colorings also match.

@columbus8myhw

Ай бұрын

To explain somewhat, for those who are not familiar: take two tetrahedra, and cut off the corners (revealing several new faces, which I'll call truncation faces). If you allow yourself to deform these shapes like play-dough, and glue the non-truncation faces together in a certain way, the result will be essentially a doughnut with a knotted hole. If done correctly, that hole will be the figure-eight knot.

Try opening a bandsaw blade when it comes coiled.

@WillBinge

Ай бұрын

Oh Christ that sounds like it would end badly

@BWWWAAALORDOFDUCKS

Ай бұрын

Or closing it back up for disposal.

@octoBadger

Ай бұрын

Safety glasses on 😊

@GingerGigantus

Ай бұрын

Amen, keep your gloves on

@AnthonyHowellII

Ай бұрын

Fire in the hole!

Topic suggestion for Steve: Somehow this video reminded me of four bar linkages. One day I had an apparently small hobby engineering problem to solve and ended up deep down in a rabbit hole. Four bar linkages are so easy to describe and have so few parameters and yet such complex kinematics emerge from it... And: they are everywhere!

Thank you, Steve, I love big knots 2:26 A knot shaped knot lol

@orangejuliaa

Ай бұрын

interesting

@intangible9838

Ай бұрын

🤨 I know what you are

@MrCrackbear

Ай бұрын

rather peculiar

@robertschnobert9090

Ай бұрын

I don't understand! ​@@intangible9838

@TheKhalamar

Ай бұрын

I was looking for a comment about 2:26. Especially during the self-touching part. Thank you.

I never thought knot theory would be so amazing

I bet that marvin the martian knot is the hardest knot to prevent self-touching.

@thetruthexperiment

Ай бұрын

There need not be any further comments.

Steve, you should heat set the nitonol into the 'solved' position and see if it will solve itself when dropped into warm water.

This guy is a awesome and informative teacher ty for your videos bro

This is uncannily similar to my graduate thesis, except there we were exploring optimization algorithms and applying them to untying knots. In one part of the research we used prime knots as input for our knot modeling software and randomly cut the knots so that they would then be "untie-able". Then we used an optimization algorithm to "shake" the knot until it was untied. I'm not sure if the clips shown starting at 4:58 are from something the authors provided or something else, but it looks so similar to what we built I gasped!

Man… you’re really intriguing my senses with your videos. They have just the right amount of breaking the information down so an amateur can understand, but still keeping it to a high standard, so that knowledge is transferable. To keep it short: I love your channel! Jep up the great work😍

@SharpAssKnittingNeedles

Ай бұрын

He really is one of the best science/math communicators out there! We are lucky to have him!

*_my top 3 favorite knots:_* 1: Fox 2: Dog 3: Wolf

I got a tent that works off this concept one time, and it took me a week to put it back in the bag the first time.

9:16 "..but it's knot" 😂

you reminded me of and obsession with knots I had years ago. and also make me want to know if there's a knot equivalent of platonic solids

A video of Marvin the Martian touching itself. Well done, sir!

Hey Steve. A new video by the Action Lab was just published, showing a cup that can be used while in a "zero-G" environment. The first thing I thought of is, "We need a Steve Mould see-through hydrodynamic system for this one"

i can't retain information that well, but mathematical knots sure create a lot of pee pees

3:38 I think we all end up touching ourselves if we've ever been let go 💔

Never regretted watching one of your videos, about time i subscribe!

I love that idea that atoms are knots. So smart really.

Rabbit : Tie them together, Piglet! Can you tie a knot? Piglet : I cannot Rabbit : Ah, so you can knot Piglet : No, I cannot knot Rabbit : Not knot? Pooh : Who's there? Rabbit : Pooh! Pooh : Pooh who? Rabbit : No! Pooh... Piglet, you'll need more than two knots Piglet : Not possible Owl : Ah, so it is possible to knot those pieces Piglet : Not these pieces! Pooh : Yes. Knot those pieces Piglet : Why not? Eeyore : 'Cause it's all for naught

Steve at start of video: Unlike any puzzle *Bandsaw blade has entered the arena*

Hey Steve thanks for making me a little smarter, always look forward to your next video

Moooooom! The Nitinol knot is touching itself again!

Petition to edit the subtitles to say 'knot' whenever Steve says 'not' I would settle for a k/not counter

3:23 it is like me. When I am feeling unstable, I end up touching myself...

your videos are fascinating, been a fan for a long time, thanks for educating us

This was stimulating and fascinating. Thanks!

1:11 hey that's "Mould Effect" apparatus at the back

I appreciate this work even if it was knot an exhaustive approach.

I've played this puzzle with extension cables many times. I loathe it!

I love this video, I would love more content on this subject

That reminds me of the video you made about how pup-up tents work!

Really cool! Dont get your marvin stuck in it though!

Ground News is brilliant! 👌🏼

Спасибо большое. Очень нравится ваш контент и ход мыслей.❤

@SteveMould what do you use for your physics simulations? Another great video by the way

@SteveMould

Ай бұрын

Algodoo

@mrpid87

Ай бұрын

Much appreciated, sir! @@SteveMould

I sure love how they behave is that way 😂

"Part of me wishes it was true... but it's 'KNOT'." Haha, nice pun you made there, Steve!

Great video! I was able to connect concepts and get new understanding about knots!

07:42 Oh, Mark Pauly at EPFL again! I think that's the third time I saw his name on this channel. The previous are Self-assembling material and Caustic lenses.

@tolgayldz1898

Ай бұрын

He has really great works on solid/geometric modeling as well.

This reminds me of how you safely (?) fold a Bandsaw blade. Also folding a car sunshade feels similar.

@rickclayton1806

Ай бұрын

You need to keep clear when you release one from the package. I throw them out on the floor.

My first thought was as I watched this, what it would look like to blow some bubbles with those knot structures. Or really to see how the bubble solution forms together on the structure.

As soon as it came out of the bag, I was like, I have a tent like that! You just twist it down. Neat to see it explained!

2:26 Marvin the Martian

02:26 , that's a classic

@RangeGleasry

Ай бұрын

Marvin the Martian 😂 whatever you say Steve

Please keep making me curious. Mould my mind. You're such an inspiration.

God I love it when smart people talk about knots. 🥵

"I was eventually able to solve this problem thanks to the hydraulic press channel"

2:48 Or you could call it a butterfly.

I saw a thing about knots from veritasium and I was amazed at just how many types of knots there actually are and it in the thousands or tens of

reminds me of a folding tent It's such a puzzle to fold it back into a circle

"Part of me wishes for it to be true, but it's knot." Steve M∞ld, 2024

It's so crazy how they behave is that way.

Very nice 🙂

nitinol?! i had been introduced to nitinol maybe 20 years ago … it's great stuff!!

marvin the martian 👀

I thought of something you might be interested in looking into for your channel. When you aggressively pour a liquid into another liquid, sometimes some liquid will splash up into the air. I've been wondering if that liquid splashing up is the... "analyte" or the "titrant" (didn't know what else to call them lol, but you know what I mean). Is it always only the analyte or the titrant, or is it a mix of both? are the drops pure analyte/titrant, or are they x% of the analyte, and y% of the titrant? I dunno, just a shower thought that I thought you'd find interesting as well.

@echognomecal6742

Ай бұрын

Would watching slo-mo videos of pouring coloured liquids help?

@polyblank73

Ай бұрын

@@echognomecal6742 Yeah, that's what I thought too.

@chrislewis7811

Ай бұрын

I doubt there's a single answer here. Say you're pouring A into B. If A is a solid (eg a marble) and B a liquid, any splash is all B. If A is a liquid and B a solid, it's all A. With both liquids, the situation is somewhere between these two extremes. Factors that will affect the ratio include the rate, height and angle at which A is poured, viscosity, density and surface tension.

This is like the pop up beach tent i bought.

This is very cool ❤❤❤❤

3:37 Relatable

Marvin the Martian knot definitely fond of self touching

3:43 these knots have a lot in common with me. 😂

Growing up my dad was a soccer coach and we had those foldable goals… I got like 15 sec in and started getting flashbacks of me almost in tears trying to get them to cooperate and go back in the bag 😭 lmao

Too late people, you missed a rare occasion of a typo by Steve Mould

@bluenono3821

Ай бұрын

to*

is

Thats crazy he knew I was thinking about folding tents.. I was thinking about them before he even brought up tent poles

I bought a tent that used this principle. I opened it at home after I bought it. I've never been camping in it.

“Elastic knots behave IS a very bizarre way”? Not “…IN a bizarre way”???

@fermat131313

Ай бұрын

You must live for moments like this.

Excellent as usual!

Interesting! Reminds me of trying to remove a bandsaw blade from it's package and installing it on my saw. My bandsaw takes a blade that's over 18 feet long (about 6 meters)! It comes packaged in a flat box 'folded' into 7 circles. I've never been able to fold a dull one back up into 7 circles to make it manageable to re-box to throw it away.

👍👍👍 Awesome Steve, as ever! Thank you.

I'd like to buy the puzzle knot as shown in the bag!

I was thinking Marvin The Martian too, glad I wasn’t the only one.

Fasinating..... thanks

Gym teacher here...we had these portable soccer goals that came in a bag. When pulled out they would pop up and be ready...problem was it would take up forever to figure out just how to get them back into the bag 😆