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The Leidenfrost Effect: How to Make a Liquid Levitate

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In this video Michael Aranda explains what the Leidenfrost Effect is, and how it can cause liquid to 'levitate'. Hosted by: Michael Aranda ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.ncbi.nlm.nih.gov/pubmed/2058218 https://books.google.com/books?id=9wmgYl49YQ0C&pg=PA91&lpg=PA91&dq=joh ann+leidenfrost&source=bl&ots=13dysZZkrP&sig=3n1Xj1n6f8omb1OmTcARMV0fL RU&hl=en&sa=X&ei=xunDVPLqMcGmgwShloPoDg&ved=0CDAQ6AEwAzgK#v=one page&q=johann%20leidenfrost&f=false http://pages.uoregon.edu/msiuo/taylor/fractalfiles/Film-Boiling%20Liquids.pdf http://link.aps.org/accepted/10.1103/PhysRevLett.109.074301 http://www.nature.com/srep/2012/121010/srep00720/full/srep00720.html http://www.pmmh.espci.fr/fr/gouttes/Publications_files/Dupeux2014.pdf http://www.epa.gov/rpdweb00/docs/cleanup/nanotechnology/chapter-3-lab-on- a-chip.pdf http://www.bath.ac.uk/news/2013/09/05/leidenfrost-maze/
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Текстовые комментарии (729)
Gollem's Gaming (1 месяц назад)
I’ve watched this video several times over and I think this could solve the liquid transfer systems onboard the ISS. We just need hoses that are have these grooves cut into them. That hot water almost looks how it would in microgravity.
Ape X (6 месяцев назад)
I thought we used the minerals thats in the water and magnets
Scienceoclypse Online (6 месяцев назад)
This was a pretty good video. Scihow we are a student group trying to moderate education system in our nation. help us in growing. https://www.youtube.com/watch?v=0BdrslMG9YQ
Banica Georgian Vasile (10 месяцев назад)
But what if the liquid is hotter than the solid object?😎
Radha Krishnan (11 месяцев назад)
i am here after watching a guy spank lava
Halo Genisys (11 месяцев назад)
Got yourself a new sub
Professor Drumsticks (1 год назад)
Goat lobe leidenfrost
Jackie Singleton (1 год назад)
When I was a kid my best friend had a really old wood stove in his living room, one of the older types that didn't have a separate fire-box & outer cover to keep you from touching the glowing hot iron & on cold winter days we would have "spit races". We would spit on the stove top & then just blow on it and they would shoot across the surface as if floating in mid air. "Leidenfrost loogies" P
Rock Balancer (1 год назад)
you should have told us what applications they have specifically
DarkLord DannyD (1 год назад)
I m here to find out what happens if a lightsaber falls in the ocean
Mathematical Polynomials (1 год назад)
So does it levitate
Charles J (1 год назад)
YOU TALK SO FAST.
HomersIlliad (1 год назад)
Couldn't they lower the air pressure to lower the Leidenfrost temperature for certain applications?
BoundlessAuthority (1 год назад)
This dude is not blinking
Robert Long (1 год назад)
Simple fix. Just change the laws of physics. Bam. And you good ;)
Gamganca (1 год назад)
I wish I could sit my ass onto a cushion and propel myself up a bunch of steps.
Arkus (1 год назад)
"MOM, NOT NOW! I'M LEARNING!"
Robert Snider (1 год назад)
Imagine the practical uses if they design an engine or turbine around this. Almost infinte energy (though I Imagine it would initially be large scale)
KrebsLovesFiesh (1 год назад)
0:25 cool optical illusion!
Yal Rathol (2 года назад)
....someone figured out how to make water run uphill. welp, there goes another metaphor for "impossible".
reflective vagrant (2 года назад)
that happened when the Mississippi river ran backwards due to an earthquake (or so I hear...) But what interests me is when a bead of water forms not on a hot surface, but on the surface of another body of water. This often has a very short lifespan so most don't notice them, but mildly soapy water seems to extend their lifespan to an extent that they can be noticed more readily. And no these aren't hollow soap bubbles but full water beads, no air. They don't cruse along the surface like a bubble or cling, they bounce almost like the things in this video do.
Tony Pucci (2 года назад)
@scishow does it have to be water. is it something to do with the surface tension of water being able to hold a droplet. or could you use a liquid with a lower boiling point requiring less heat to get the same effect? thank you
Stephen Fritsche (2 года назад)
To celebrate this I changed my steam name to johann gottlob leidenfrost
Ahmed Sami (2 года назад)
scishow has a terrible intro tune, i hate listening to it every single time
Neven Bowler (2 года назад)
Ahmed Sami I agree, i find their intro really cringy.
Guo Wei Yan (2 года назад)
Now try this with humans
TheFakeVibe (2 года назад)
Came here after the CrazyRussianHacker's video !
Husnul Khotimah (2 года назад)
I did too :D
egoist920 (2 года назад)
This is just awesome with twice the speed! XD
Lethal Chicken (2 года назад)
so how does the lotus effect work?
Lethal Chicken (2 года назад)
+Tyrone Jackson dick
CJCWIS (2 года назад)
Wingardium Leviosa
Shafiee Khaidzir (1 год назад)
TRUCY <3
ValkyrieCat109 (2 года назад)
CJCWIS No, it's wingardium levi-o-sa
Brenden Pischke (2 года назад)
I found this after preheating an oven, forgetting that my mom likes to store a large metal bowl in it. Found the bowl still in there when the oven was done preheating. Decided to put the bowl in the sink to cool off. The tap happened to be dripping. A drop of water happened to land in the bowl, and I watched in amazement as the drop raced around the bowl as though the bowl's surface was frictionless.
Team Firefly (2 года назад)
I love to do this with hot pans after cooking.
NightStorm (2 года назад)
So if I poor liquid nitrogen on my hand it will do the same thing?
xxX TheCrazySkierDude Xxx (1 год назад)
yes, yes it would
Adam ramzan (2 года назад)
Yep
Navin Adikari (2 года назад)
You can drink bleach for superpowers
Glorval MacGlorvas (2 года назад)
You can splash liquid nitrogen on your face and in your eyes without harm. :D
spleaner (2 года назад)
+Jayyy Ceee It's fine. Happens to me all the time.
Sky Flier (2 года назад)
Sometimes I see this when it rains and I know it can be hot, but not that hot. How does that work?
Dylan's Galaxy (2 года назад)
Sky Flier check out smarter every day he was talking about it
Sky Flier (2 года назад)
+7years Ryugami nah fam, other people see this too
7years Ryugami (2 года назад)
your eyes deceiving you?
djayjp (2 года назад)
Simple water tension?
Someone Else (2 года назад)
This is why Waldo is still hiding.
Bethany G. (2 года назад)
This is also how you check to see if your griddle is ready to start making pancakes! Cool! :D
Cez305 (2 года назад)
Levitate Levitate Levitate
The Enderman (2 года назад)
1 magnets
The Enderman (2 года назад)
2 heat
Rizu Chan (2 года назад)
This is why heavy clouds can float in the sky
Grigle (2 года назад)
+Rizu Chan but then it freezes up there so becomes a liquid or a hail (ice solid)
Rizu Chan (2 года назад)
I thought it was because when water vapor evaporates it keeps the liquid from falling from the sky ._.
Geo & Pixels (2 года назад)
+Rizu Chan Okay first take a science class. You can learn all about this In a 6th grade science class. Second, the cloud droplets are only several millimeters if not centimeters that are attached to dust particles in the sky. They are literally very light. A cloud is not one giant entity but a collection of cloud droplets. Clouds only way several tons because you are consolidating all droplets into one entity. Once they are heavy enough and large enough it rains. Gee, Go to a weather class.
Grigle (2 года назад)
+Rizu Chan because atmosphere is very light and hydrogen and oxygen when it wants to leave it cant because atmospheres lightness holds them
Rizu Chan (2 года назад)
Then how do water droplets float in the air?
Krishna Kabrawala (2 года назад)
your explanation was very good but please make sure you speak a bit slow so we can understand much better way..
Justin F (2 года назад)
+Krishna Kabrawala you can adjust the speed of the video your listening to.
Afrocanuk (2 года назад)
I think a similar result can be accomplished if you radiate a high audio frequency from the surface instead of heat.
Jared Schreckengast (1 год назад)
That sounds interesting & useful!
wilsterocks987 (2 года назад)
was he a physicist or a physician ?
crowteeth (2 года назад)
Physician
Aidan Gill (2 года назад)
1756
علاء ناجي (2 года назад)
تحيه الى كل عربي شاهد الفيديو .. ويحب العلم
Kyle Baraloto (2 года назад)
علاء ناجي lol
Bathna33 (2 года назад)
+Baran Hekimoglu sorry for the past comment. It's just that I'm tired of racist comments. We're not even Arabs in the grand Maghreb (or at least what I think. And it makes sense because those in the middle east don't understand our dialect) but I still don't like it. On Facebook, Google, every thread they have to pull some sick jokes. And it's hurtful after all. Have a nice day!
Spooky Scammer (2 года назад)
+Bathna33 well, thanks for the translation
Bathna33 (2 года назад)
Arab*
Bathna33 (2 года назад)
+Baran Hekimoglu the comment says: my regards to every Arabic who watched the video, and who loves science.
Cyber Media Intel (2 года назад)
so if you spin the pan the water all flows in a circle in the same direction collectively, so if we scaled this up and heat mechanism passed that point, we could have thousands of gallons of water forming a cyclone that will dissipate slowly, we have some kind of turbine the water is spinning and we gain electricity from it, but we don't waste energy heating up the large pot by placing it by a volcano, or drilling into the earth till we find a pocket of magma, or we scale this up and put it in space by our sun and use a liquid that wont go away over time, or find a way to decrease the temperature required, idk it takes thinking but it sounds possible to have clean energy from this effect.
R4D TROLL J3GUS (2 года назад)
+Lifestyle Innovation or we could just do regular geothermal
Samaa Ezzeddine (2 года назад)
XD Came here after I saw a video of molten copper being poured on a big mac burger.
Samaa Ezzeddine (2 года назад)
+sawyer bergeron, just look it up
sawyer bergeron (2 года назад)
Link? That actually sounds interesting and my entire suggestions list is just scishow, minutephysics and veritasium at this point
Mark Hopper (2 года назад)
me too
GrillzTM (2 года назад)
+Samaa Ezzeddine SAME :D
Jayyy Ceee (2 года назад)
Saaammmee cx
ArtyPreventsCamping (2 года назад)
THAT IS SO COOL
Dagomar Schreuder (2 года назад)
would this work with mercury as well?
Rohit .s.Prasad (3 года назад)
I would like to know all of its applications
HEBLEH (3 года назад)
Hover- crafton the moon? Anyone?
Wildmind Entertainment (3 года назад)
Subscribed
keeranimal8 (3 года назад)
I find it ironic that this effect requires heat and the name has Frost in it...I love science!
Kastley (3 года назад)
aaahhhahahahaa look at his hair....
Kyle Simon (3 года назад)
step 1: Room temp gas cooled to liquid and stored in pressurized tank in backback step 2: tubes routed through hand controlled valve to front bottoms of shoes with backward facing grooves. step 3: profit!
Thomas Bludis (3 года назад)
get your own leidenfrost maze http://kck.st/1GTAlxX  free shipping
Thomas Bludis (3 года назад)
get your own http://kck.st/1GTAlxX  free shipping
Tenderizer17 (3 года назад)
Maybe there is a way to apply this to create hover boards. Something which I have personally been long awaiting (And hoping the laws involved will be the same as riding a bike). I have no ideas on how this could be applied to hover boards but maybe it is possible.
Spencer Geller (2 года назад)
You'd need a TON of energy to make it carry a person for any reasonable amount of time
The Goodly Dragon (3 года назад)
2:57 100 degrees C?
The Goodly Dragon (3 года назад)
So how exactly does this challenge the laws of thermodynamics? I think you said something to that effect.
James Maniac (3 года назад)
Couldn't you get a gas that had a density of at least 1.1g/1ml squared and then put the gas in a cup of water? That way the higher density of the gas would make the gas sink to the bottom of the cup, lifting the water.
Thejesusfreek316 (3 года назад)
This is so cool!!!
Micheal McLaurin (3 года назад)
lol i do this all the time on my stove cause its actually a ton of fun to watch and do.
Eniklis (3 года назад)
You could put the water in a Vacuum, that should lower the Leidenfrost effect, combine that with hydrophobic coatings I think you could get the temp down pretty low.
Riverside (3 года назад)
I remember dropping bits of water onto a still-hot stove to watch this happen!  ...Unfortunately, I lacked the curious spirit to ask why it happened, but it was fun to watch!
GarketMardener (3 года назад)
I knew this effect existed, but i never thought what caused it. I always thought the water "bounced back up" because the hot vapor pushed them back Kind of what happened.
Scottie Jobe (3 года назад)
I remember seeing this! When I was in my high school chemistry course, my teacher accidentally spilled liquid nitrogen on the floor. I thought it would just splatter, but instead, it popped into a bunch of liquid balls and rolled across the floor for a long distance! I was stunned, but no one else noticed or cared. My teacher didn't notice or have an explanation. Now I know what happened!
OnyxIdol (3 года назад)
Totally unrelated, but Leidenfrost would make a pretty good black metal band name.
Payton Pryor (3 года назад)
I really wish he would get rid of that annoying streak of piss yellow in his hair. Not trying to be an ads but its just not attractive.
Omer Lavian (3 года назад)
Has the movement of water been tried in a vacuum?
Ze German Scientist (3 года назад)
In Soviet Russia, nitrogen is the liquid and you are the frying pan.
Hootywho (3 года назад)
Are there any practical uses for the leidenfrost effect?
Happy Ijuko (3 года назад)
a confortable cushion of their own self x)
Tuen9 (3 года назад)
This effect also allows a person to dance liquid nitrogen on their tongue.  Make no mistake though, going in and out, it must not touch your teeth... otherwise it'll contract the enamel enough to crack it.  Also, someone mistook this as reason to *drink* liquid nitrogen.  That produces... catastrophic results...
whitestar111 (3 года назад)
This is why science is my favorite subject...it is never boring EVER if done right lmao 
David Niegowski (3 года назад)
I'm guessing that if I tried this I'd fly off the vapor pocket and burn my ass?
Maarten DJ (3 года назад)
So... how a about a frictionless vehicle, riding on liquid on a heated track? Would that work? If so, it would become a competitor to maglev technology.
Dionisie Tarlev (3 года назад)
You know what I'm thinking Hover cars
WhiteIce (3 года назад)
Water hover board on the sun. Make it happen.
Troy Carr (3 года назад)
So you're saying the Flying Nimbus from Dragon Ball might actually be legit? Sweet... B|
Benjamin Manktelow (3 года назад)
Slightly off topic but does anyone else think that this guy is way too handsome?
Brandon Ma (3 года назад)
3:18 cool music
Fieldstuck (3 года назад)
That's so cool. I recently observed this effect myself when I spilled a small amount of liquid nitrogen on my lab bench. Nitrogen is a gas at room temperature, so upon touching the bench, the droplets of liquid were coming in contact with a surface at much higher than its boiling point and started zipping around.
Sunil Jain (3 года назад)
Water hoverboard anyone?
albert jochems (3 года назад)
Interesting....
Luna (3 года назад)
What technologies can be created from this?
renewed calm (3 года назад)
Could you explain how, sometimes when I pee, droplets above the surface appear to skitter away from the point of pee entry to the edge of the bowl, seemingly without friction. I'm interested in this, but not interested enough to set up slo-mo cameras at water level and all.
Mister Opioid (3 года назад)
I did this with my sperm once. My girlfriend was so impressed that she almost actually existed.
Nick Dalton (3 года назад)
Seems like a nice way to make a faster train. Or some sort of mass transit
It_is_JamesG. (3 года назад)
Fine structure constant??????
Y'ra Exal'ga S'kgs (3 года назад)
Pffft, I learned this in elementary school.  Tell me something I don't know. Just kidding, I'm in college and we haven't even covered this yet.
jonny morris (3 года назад)
Im watching a 20 minute non skip able add :D yay!!
Guillermo Don Estevez (3 года назад)
I love science!
Flor Garza (3 года назад)
Couldn't you just use a liquid with a lower boiling point instead of spraying the hydrophobic stuff
Eric D (3 года назад)
Hey, you actually used units of measure correctly for once :)
Merik Malhads (3 года назад)
I first noticed this with dry ice in... grade 9? Whenever I first got to play with dry ice. You can play air hockey with dry ice pieces 
guywiththebottle (3 года назад)
Does pressure only change the temperature at which the liquid boils or does it affect evaporation as well?
Malcolm Akner (3 года назад)
There is also a really interesting phenomena if you let the droplet form inside of a slight concave bowl (like the one on your stove). The droplet will be forced by gravity to go to the lowest point, and if it is stable enough, and if the stove is clean, the droplet will start to spin around it's own axis. And it will spin really fast. Above some speeds the droplet even starts to oscillate through certain patterns, and there is a really cool star-shaped pattern that appears if you are patient enough. It can be seen from the side that the droplet is spinning amazingly fast. Also, if the droplet is big enough a bubble will sporadically form in the center, not quite bursting through the surface-tension, but big enough to lift the drop and increase the rate it is spinning at. When the bubble collapses it will cause the bubble to all kinds of things, ejecting droplets, bounce up and down, reverse the direction of spin, or form the star-shaped I mentioned. Really interesting physics, try it out the next time you're cooking! 
Evil LOON (3 года назад)
Take caution.  Some hot fry pans exposed to a cooler liquid can crack and explode.
Alan Tipert (3 года назад)
The French scientists were able to produce the Leidenfrost effect below 100 degrees Celsius or Fahrenheit?
Reckless Roges (3 года назад)
I've observed a similar effect at room temperature, (though I expect it has more to do with rotation and surface tension.) Splashed sea-water will sometimes skate over the surface for a few centimeters, before coalescing.  Never tracked down the name for this effect. (I call it the rouge hydro-dynamic effect, for want of a better name.)
George Tsimpedes (3 года назад)
This might be used to send a probe into the sun. It works for comets.
Kitty Fister (3 года назад)
This guy is cool and all, but I'm always a tiny bit disappointed when I don't see Hank Green.
Lorden Miller (3 года назад)
My question would be, how does this Leidenfrost effect behave in a vacuum and/or under increased pressure?

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