The Inverse Leidenfrost Effect

[@Tymon0000]

Inverse Leidenfrost: stove floating on a droplet

[@wldwarrior]

Brilliant

[@sycamorph]

To be fair, that's pretty much what it is.

[@Keerthivasen12]

😂😂😂😂

[@fuzzy4461]

@@sycamorph No it isn't?

[@sycamorph]

@@fuzzy4461 Why not? Droplet acts as a stove and heats liquid nitrogen, and floats on the gas produced.

[@PoFTwente]

Thanks for highlighting our work from Anaïs Gauthier!

[@vctor611]

Anaïs is really pretty!

[@dillee1]

would that bouncing droplet pilot wave analog work with this set up? kzbin.info/www/bejne/jXrchY16fdqUqLM

[@jluchette]

Vctor ohmygawd stfu

[@littlerhino2006]

@@jluchette no u

[@gasdive]

Really cool. If you used oxygen for the centre beaker you'd eliminate the issue of the liquid boiling because it's got a higher boiling point than N2.

[@whatdamath]

Tried to recreate this at home. Cat is levitating on the nitrogen but the water droplet is nowhere to be found

[@davidwuhrer6704]

I was expecting the "instructions unclear" meme. Close enough.

[@yuris9089]

Eyyyy its Anton. Nice to see that you guys all watch each others videos

[@sebione3576]

What's that, meow?

[@LotusPrincess69]

hello wonderful Anton, this is person.

[@drops2cents260]

I discovered a similar phenomenon which I call the Lazyfrost effect: During winter, my two cats don't go outside too much, but instead are levitating themselves on my bed and simulate hibernation as good as they can.

[@jerotoro2021]

I was just watching Backyard Scientist drop lava into his pool, and noted that the lava initially floated on the water for a while before it sank. My first thought was "reverse (inverse) Leidenfrost", the steam from the boiling water is keeping the molten rock afloat. And here you are now doing a video ON THAT EXACT THING!

[@s888r]

What's the name of that video?

[@EPMTUNES]

@@s888r it’s called “Pouring lava on my pool!”

[@cherylm2C6671]

Thank you for your comment!

[@besmart]

You should really be GOGGLED UP for this bro 🤓

[@lo0ksik]

Smartass

[@AxxLAfriku]

OH NO!!! I just saw something very VERY hideous! I looked in the mirror! OH NO!! But I am the best KZbinr of this generation so it is all good! OH YESSS!!! Thanks for you attention dear SMART

[@thecoryguy]

I think I remember hearing somewhere that small splashes of liquid nitrogen won't harm you.

[@Mutantcy1992]

You look cool if you get liquid nitrogen in your eyes.

[@mikevarrecchia4264]

@@Mutantcy1992 I appreciate the joke, however, it also sounds quite painful

[@MichaelOrtega]

we can all agree that water droplet was riding V A P O R W A V E S

[@stevethea5250]

The scientist is so hot n cute!

[@martiddy]

Did someone said... V A P O R W A V E ?

[@sendjameslove]

That Leidenfrost A E S T H E T I C.

[@nvidious6115]

【ＲＡＲＥ】

[@dashhazard8526]

V A P O R W A V E is dead.

[@excellentdriver]

"you've probably heard of the leidenfrost effect" yeah sure i have! *nervous laughter*

[@fatguy6153]

yo Idot

[@Corn0nTheCobb]

^ ironic post

[@judith8161]

Yeah right, my thoughts actually were like "yay, next time someone accidentally drips some water on the stove top, I can sound like I´m REALLY smart" :D

[@jupiter_ios]

Don’t tell me you’ve never heard of it

[@sanctobellum290]

I giggled so hard at this.

[@FerralVideo]

"This episode was supported by viewers like you" The nostalgia of growing up on PBS shows.

[@miikey_lol]

Is the cat required for this demo? Would like to replicate this but I'm not sure If i need a cat

[@ykalon]

Cat is essential...

[@superalvin7208]

You could try but it won’t end well

[@Asdayasman]

You need a cat. Full stop.

[@IceCrusheRmedia]

There's a 50% chance that you do.

[@xlxDxlx]

I mean in most experiments you want to keep as many variables the same as possible. The lack of cat may have been why his first attempt went awry.

[@ChrisMuncy]

I loved the format of this video. It was great to actually bring in the scientist who did the experiment.

[@sendjameslove]

Me: Google, define "Indefinitely". Google: Literally, tens of minutes.

[@icycloud6823]

"unspecified period of time" or "unlimited". He probably was referring to the former.

[@lucaslucas191202]

IcyCloud But that doesn’t make sense either as he specifies how long right after. Not precisely, but I’d still consider it specified

[@SuperHagrids]

@@lucaslucas191202 It's been observed for that long and then classified as indefinitely. There's no mention that it stopped after that tens of minutes, just that they stopped observing it

[@lucaslucas191202]

@@SuperHagrids So indefinitely as in unlimited right?

[@SuperHagrids]

@@lucaslucas191202 No, indefinitely as in "We don't know really because we haven't seen it stop and we don't know if it will eventually"

[@0dyss3us51]

You are really one of the very best youtubers, so interesting mix between science, photography and fun!

[@CameronUnderwood]

Great Video! Loved the image comparing h and h + dh, helped my understanding a lot!

[@veritasium]

I've got a really good animator who put these together in the middle of the night. I think that's essential for understanding how this works.

[@CameronUnderwood]

​@@veritasium The animations in your videos are always top notch and have helped my through parts I didn't even understand throughout my degree (I'm looking at you semiconductors and magnetism!). Thanks again to you and the animator.

[@1.4142]

They recently discovered the triple Leidenfrost effect, where water and ethanol droplets on a hot pan also bounce off of each other.

[@carpo719]

The title alone caused my finger to click that shiz. Always love these videos. Thanks again for your efforts. NOW to only find a use for the effect :)

[@carpo719]

@hyper always an option... It's a better word than poop. :)

[@Haseeebo]

That's how titles work! 😃

[@Galenus0]

3:33 I love that badass triple-droplet circling round

[@williamforbes6919]

So you are saying we can make a really expensive mechanical game of pong?

[@bradywells1293]

I think they already did that on Adam Savage's Tested youtube channel -- analog pong

[@crocogab3674]

Genius Idea

[@oniricPrj]

I'd buy that for a dollar!

[@soylentgreenb]

Pong was analog. No digital circuitry.

[@williamforbes6919]

@@soylentgreenb And I quote "created using his knowledge of digital circuits". It has a scoreboard, there is going to have to be some digital counting unless you think they are storing scores with a sample and hold circuit.

[@thegreaterconundrum]

3:05 "It has been observed to last for tens of (in my head: "thousands of years") minutes."

[@krukerproductions]

So that droplet is literally moving because of vaperwave

[@cristianverdugogalaz8725]

#vapenation then?...

[@PhillipNutt]

h e a d y

[@william41017]

@@cristianverdugogalaz8725 pilot wave theory

[@antimatter_nvf]

No-no-no, vapOrware

[@MazeFrame]

There is your PhD topic: Moving fluids with Vaporwave

[@dirm12]

Really loving all these video calls with experts on scientific issues and phenomena. Hope there are more! ^^

[@googletalkfish5491]

6:51 Hey Vsauce Michael here!

[@jooplin]

Hey VeSauce

[@googletalkfish5491]

where are your fingers?

[@TheStressIsReal]

@@googletalkfish5491 I know you can see them by just raising your hand, but HOW DO YOU KNOW THEY'RE REAL?

[@googletalkfish5491]

​@@TheStressIsReal You might say, well, I know where my fingers are. I'm looking right at them. Or, I can touch them, I can feel them, they're right here and that's good.

[@TheStressIsReal]

@@googletalkfish5491 lol. Long live Michael

[@TheUnlocked]

I like this thing you're doing where you call up experts. It adds that extra layer of authenticity to the video.

[@LostieTrekieTechie]

Veristablium is back!

[@Rattus-Norvegicus]

Ha, I thought you said he was black.

[@HarryCochrane111]

Duke from the Vatican

[@TheDarkConRises]

Love watching Dirk's videos!

[@Adeloye1000]

Tim?

[@badsyntax173]

@@Adeloye1000 you need to ask?

[@tamojitchakraborty3871]

Very well done, when I see your channel and I see the number of views , I understand , that world is so far behind, you have done a tremendous job. We collectively should promote such channels. Very well done.Thank you.

[@doubledarefan]

Came for the science, stayed for the cat.

[@mansurrahaman9367]

Came for science but strating with ad

[@lighthousea4655]

I feel very comforted when I watch your videos.

[@BrainSlamAnimatedScience]

The perfect application for this 3:42? Isn't it obvious?! The DVD screensaver... will it hit the corner :P

[@maluraq]

What I found interesting is that the drops form indents in the surface below so they coalesce into larger drops instead of staying independent like when the drops themselves are evaporating.

[@AnshulMeshram-hz1df]

Me watching this one day before my Maths paper and thinking Hell ya , this looks amazing

[@nickryckx7817]

At least, with your "missed" attempt, you visualise what happens when two droplets merge (2:35), and it may help people to imagine neutron stars merging and the conservation of angular momentum.

[@wyattb3138]

Veritasium is finally back.

[@EmazingGuitar]

Now say goodbye again lol

[@miketurner3461]

That introduction between him and Dr. Gunther was cute. Clearly both were like "uh... hi, you're unexpectedly cute, um, right... science"

[@WoLpH]

Very interesting video. Also, thank you for pronouncing Leidenfrost correctly!

[@Raientai]

"Start your year off on the right foot by listening with Audible" *2020 happens*

[@daftheck1439]

As a french i find her English so good that i'm not so sure she's french too... OH cool video by the way!

[@keithlowery9708]

Bro you are just the coolest of the cool! Thank you over and over for sharing great content

[@yatint9665]

I Read the title, I liked the video.

[@pairot01]

You should always wait to watch the video. Critical thinking is good.

[@GamingThistle]

I read your comment, I liked the video.

[@majikmessiah]

Almost a quarter of this video is an ad, I paid to avoid ads and support the content creators I like, now almost all of them have ads. FeelsBadMan

[@mihailazar2487]

oh ... when I heard about the inverse Leidenfrost ... i was expecting floating a bubble below the surface of a fluid ... welp, I guess that would be the NEGATIVE Leidenfrost effect

[@Cjnw]

Sounds like something that reached a negative Kelvin reading

[@myperspective5091]

The reason why the droplet is moving is because the vapor is not only is trying to lift the droplet, the droplet is also trying to move to the lowest level a can, but the depression that it is sitting in is also moving due to the interaction at the leading edge of the droplet with the liquid nitrogen, which is making it roll in one direction. when the trough gets all the way to the edge it can no longer be deformed and the water has a slight. splashing /bouncing causing it to ricochet off the wall which has the effect of turning the leading edge around to the other side, which then starts the process over in a new direction.

[@joshisnot11]

I'm sorry, I literally forgot what the video was about the instant I saw the physicist. Also, that potential application they explained was one of the coolest things I've ever heard. It's like, Minecraft Farm mechanics in real life, except even better.

[@brahzyzz]

Can you hear "that is cool" at 2:39?

[@leecaste]

bluesn0w no pun intended 😜

[@sharehbutt]

I heard it 😂

[@zandersgallery]

Really dig the application part! Was trying to figure it out myself so that was a total mind blown!

[@AngadSingh-bv7vn]

moving around embryos on top of liquid nitrogen is not an application, it sucks quite frankly, YOU WANNA STORE and you'll never bother making canals of super stable and continuously replenished liquid nitrogen.

[@al1383]

5:38 she went straight sexy highly intelligent gangsta nerd mode! I think I’m in love

[@alext-f5255]

I once pushed a styrofoam cup of coffee across a table and it vibrated such that the standing wave on the surface formed beads of liquid which rolled around on the surface of the coffee which was of course mind blowing. I have since repeated it a few times to demonstrate to people who don't believe me but I have never understood how exactly it works.

[@RangerRuby]

I like the SciShow shirt that future you is wearing! :)

[@Ultiminati]

Your quality is increasing, very nice.

[@unscentednapalm8547]

Sliding into her DMs...."Hiiiii, how are you?"

[@NobbsAndVagene]

Who are the people downvoting stuff like this? This video perfectly showcases an interesting natural phenomenon and explains it thoroughly in a way that's easy to understand. Who are these descendants of amoeba who doesn't like this? I'm so perplexed.

[@sidjindal]

That expert is very cute. I now like science even more.

[@HIDITarchive]

Someone had to mention it 😂

[@technicaldisaster1590]

Somehow, he is able to call random strangers that he does not know for his videos. I'm surprised that he has that much charisma. (skill increased to 100)

[@TommyCrosby]

Someone NEEDS to make a Pong-ish game with those drops moving in straight lines xD

[@dehanbadenhorst1398]

I've observed this by accident with my coffee one morning. I dipped a biscuit in my coffee, en when some coffee dropped from the biscuit back into the mug, boom, inverse leidenfrost! That's actually what brought me to this video

[@vaggelistheodorou8146]

The scientist was so damn cute

[@BenjaminGoose]

IS he a scientist or just a guy who makes cool science videos? :)

[@stan858]

Спасибо вам огромное за то что делаете выпуски, но я смотрю их на отдельном канале с русским переводом, жаль что я не владею английским, но я всегда хотел бы обсуждать и вести разговор на такие темы с вами

[@satansamael666]

Speaking of potential applications, I can see it used in an RNG to generate numbers by looking at the angle in which the drop goes in reference to a fixed line and add drop wise for each request of numbers.

[@gregsimones9295]

Wow! The brain hurts trying to wrap itself around these concepts. Most interesting.

[@anubhav0909]

You should do a colab with the slomo guys on this!!

[@scottjampa6374]

yes absolutely

[@kasperfrancoise]

Very proud of Dr. Anaïs my amazing cousin

[@TheCimbrianBull]

5:31 pentagram ⛧ Devil worshippers confirmed! 👿

[@Selur91]

That satanic droplet will open the doors of hell, and all our ice cream will melt!

[@gemmasterian4496]

Wait your joking right?

[@thiagocamargoalima]

Or golden ratio...

[@TheCimbrianBull]

@@Selur91 Oh no! 😱 Not the ice-cream! 🍦 This also heralds the return of the Dark Lord, Chin Chin!

[@alexwang982]

Heptagram

[@cauliemac]

I love the most recent Veritasium videos where you talk to Scientists about their work

[@z.d7501]

Eventhough I am too stupid to understand this, it was very interesting.

[@you1167]

😂

[@runfast27182r]

Dude! I heard about this effect in a sci-fi book (The Forever War by Joe Haldeman), but never knew the name for it. I like the application she mentioned. I won't see any value from it directly, but I can imagine applications of it to improve a lot of things. Thanks for sharing the knowledge!

[@FabiVoltair]

Wow. The Dr. is super cute! :) Very intelligent too, without debate. Nice video too :3

[@s888r]

I really like the crude presentation of your videos.

[@EthanMarkWoodruff]

Awesome video as always!

[@davidsweeney111]

Im glad you are making more videos now!

[@josephjackson1956]

2:20 looks like Derrick is going insane trying to figure this out lol

[@pierrecurie]

I'm imagining frozen mouse embryos bouncing around in a petri dish, like an endless game of breakout.

[@MrGilRoland]

“You’ve probably heard of the leidenfrost effect”... Not gonna lie dude, but no, not really.

[@jonathanorlando1294]

I want that floating drop as a screen saver. A nice modern twist to a 90's PC thing.

[@niklaskoskinen123]

Is it inverse though? I don't think the definition of Leidenfrost effect explicitly states which part should be producing the vapour. It's only us giving the example of a water droplet on a stove that has us thinking that there has to be a droplet at all. To quote Wikipedia (yeah, I know it's not the best source but still) "The Leidenfrost effect is a physical phenomenon in which a liquid, in near contact with a mass significantly hotter than the liquid's boiling point, produces an insulating vapor layer keeping that liquid from boiling rapidly." For example when a hot steel ball is dropped into water, it is Leidenfrost effect that keeps it from rapidly cooling and boiling the water.

[@Fenrisboulder]

the ball of metal would be almost cooling the instant it touches the wather , it is still the same effect

[@niklaskoskinen123]

@@Fenrisboulder I still understand that there is a clear change in the rate of cooling when the vapor layer dissipates, right?

[@kailuigi3793]

​@@niklaskoskinen123 ye it would cool faster without the vapor layer cuz then the two energy reservoirs will have nothing in between and R will naturally equal zero media.discordapp.net/attachments/424963171225436161/538472221040050207/Capture.PNG?width=400&height=73

[@HenkJanBakker]

Inverse as in; It's not the drop that is producing the vapor nor is the surface providing the heat. So Leidenfrost yes because the effect is the same but the other requirements are flipped. The steel ball in water is just a variation on scale where the hot surface is made into the ball but still the water is providing the vapor. To make it even clearer. The water droplet does eventually disappear. The hot ball does cool and the effect stops. So either the heat runs out or the water. In this setup de droplet is basically just for the ride and does not change. I may be wrong(probably am) but that is my understanding of it.

[@niklaskoskinen123]

@@HenkJanBakker I get your point, that the mass ratios are recersed, but still, the definition doesn't require water nor does it require a droplet. It only requires a liquid (in this case the liquid nitrogen) and a mass hotter than the liquids boiling point (in this case the silicon oil). In no way, at least to my mind, does the example in the video differ from the definition.

[@dinges99]

Totally off topic, but what's cool is that she is from my home town University! The town is called Enschede, near the German border in the Netherlands 😁👍

[@cheezuschrist1102]

I’m a simple man: I see Veritasium notification, I click oh yeah, oh yeah

[@tenpenny2919]

Isn't it tiring to be a beta?

[@cheezuschrist1102]

Tenpenny you tell me

[@tenpenny2919]

@@cheezuschrist1102 Atleast no one told me to use this profile. And how many _Tenpennies_ do you spot in comment sections? Exactly!

[@cheezuschrist1102]

Tenpenny huh? What are you saying?

[@eleveendays]

After spamming it every channel i like. Congratulations Amazon. You got me perma sign the freaking audible.com and it is great.

[@newgreen956]

The lighting looks great on the main camera! You might want to use some colour grading on your secondary camera, the difference is pretty noticeable, which (at least to me) made it look worse in quality.

[@ananttiwari1337]

That meet call really made me remember online classes and this was uploaded in 2019 lol

[@XWurstbrotX]

In short. There is no real application for this. But this is what fundamental science is about.

[@eideticex]

The motion of the droplet on the surface looks a lot like the motion you get with magnetic levitation over a large surface (relatively speaking). Same behavior where no matter how hard you try to deposit the levitating object, it takes on a "random" trajectory and begins to travel across the surface bouncing off the edges of any container it's done inside of. The thing I remember about that demonstration was that any force imparted upon the levitating object will cause it to move again once stopped.

[@wardippy226]

Inverse leidenfrost? Leidenburn!

[@hagaikiri3682]

Two questions: 1. Why sillison oil? How does high viscosity make the expiriment work better? 2. What's the refraction angle in the steady linear movement? What causes that specific angle?

[@thierryfaquet7405]

It's not only about viscosity but thermal inertia and freezing point. Viscosity really only helps having a single drop.

[@RajSingh-uw2xv]

That cat was cute.

[@you1167]

Ikr

[@horstgunther9521]

Great and interesting video, thanks for that. and also dr. gauthier seems to be a nice person and to love her studies, great to see

[@shubhboy0026]

Instructions Unclear...........dropped the Liquid Nitrogen in the Wrong Holes

[@carlhannusch3929]

I've seen this same effect, except it was burning thermite dumped into water. Small droplets broke off, and let off this whistle/scream as they skittered across the surface. Some of them lasted for more than 30 seconds before they finally cooled and sank.

[@BRUH-xw3ku]

6:50, VSau....... Oh, wrong channel, my bad.

[@jeetenzhurlollz8387]

she is so cuuuuuute!!!!!!!!!!!!!

[@aaronsmith2054]

0:37 the sound of falling in love.

[@WILDWOLFVisual]

We’ve missed you!

[@safir2241]

“My best video, inversed!”

[@troemax]

"!desrevni ,oediv tseb yM"

[@will2see]

Dr. Anais Gauthier is very nice. Very very nice

[@fg68g2nyd]

5:31 IT'S A SIGN!!!!!

[@poodypooroo]

This seems extremly useful for exploring Titan

[@Utoober67]

Dr. Anaïs ...whoa. What a cutey. Not to diminish her achievements.....she just also happens to be very attractive.

[@tiagotiagot]

Eyecandy+intense science drop=awesaumesauce

[@Fleato]

So thought here. If theres any sort of variation in the drop. If it traveled forever it would eventially touch every point of the container. But it would require an infinite amount of time as there is an infinite amount of point in a circles circumferance

[@jek4133]

4:40 Is this similar to the Magnus effect?

[@syborg64]

I think it's important to mention why the droplet follows in the direction of the gas escaping. initially it wouldn't make sense right? equal and opposite reaction; but the fluid simulation shows why. It seems the gas wraps around the droplet and ends up going back in the opposite direction, pushing the droplet in the initial direction on the gas. Great vid bruh, and I'd be interested to see what other aerodynamic effects we could use in combination, for example the magnus effect. that would be lit

[@Thorned_Rose]

5:30 How many fundamentalist anti-science people now screaming "See, PROOF that science is the devil" 🤣

[@Cchange4us]

I'm glad this comment exists

[@tkendon]

Gravity is pulling the droplet down the leidenfrost effect keeps it from merging so any type of movement (caused by the vapor) will pull it in that direction kinda like pulling a rug fast from under a table just more complicated

[@eternalreign2313]

Inverse Leidenfrost is equivalent to reverse racism in that no it's still just regular racism.