QI Experiments | A Spot Of Quantum Levitation
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- Опубліковано 8 вер 2024
- Who fancies a quantum locking levitation lark?
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This clip is from QI Series L, Episode 4, 'Levity'.
I don't know why but that "boing" at 4:38 is just delightful.
quantum boing
the "pussy" at 4:32 is quite delightful as well
Fun fact: these are called _high_ temperature superconductors. Since they need only be cooled to a temperature as warm as liquid nitrogen.
@marcoscolga24 They're _not_ "unfathomable," just not-yet achieved. Also, note that "room-temperature" here means above the melting point of water.
He undersold the importance of achieving room-temperature superconductivity. It would pave the path to solve the energy crisis, provide for ultra-fast computers, and so on.
But what a great way to showcase the importance of science to young viewers. Kudos QI
Computers that would barely need cooling - meaning, not only would they be much more energy efficient, but they'd also be able to compact them a bunch since you wouldn't need all those fans and airways for them to blow through.
And that would all make the ability to have supercomputers grow a ton as well, while also reducing their energy needs - making them something that would be more common, potentially even for home use.
The four big advancements that could have massive effects on society would be room temperature superconductors, battery compaction, data efficiency (sending and storing), and figuring out a much more energy efficient way to get to space.
Now, the battery issue goes down in importance if superconductors are discovered first, but they would both cause huge changes no matter which was first.
And, of course, all of this assumes that there's a way to make the discoveries affordable for the average person.
@@bobdole4916 Cracking viable fusion reactors seems like something that should be a top priority for physicists. From the articles I’ve read I believe we can do it by the end of this century so we’ve just got to figure out a short term fix so we don’t kill off the planet by the time we do. But I’m no expert.
On top of energy, the transportation would need very little repair. It's an almost frictionless circuit so extremely small wear and tear. It would get more damage from the weather than the vehicle travelling along it
4:30 that caught me off guard lol
That guy's basement train set must be epic.
OMG imagine he is your uncle
...I've seen you before...
It's the coolest one around.
Yeah, same as his basement .
That is actually insanely cool
Literally
meh, I guess it's 0K
ӿøῇχէ 0k... zero kelvin?
@@xonxt Well technically you just need -180° for superconductivity which is ~93 Kelvin
Indeed, it is cool.
4:33 His face just before they switched camera
the odd thing is, he has never seen one to know.
@@METALFREAK03 when he was born? He wouldn't remember it, but, there you go.
@@ThatGuyBobby still do have eyesight, so wouldn't see it very well, but would see.
But yeah I'm not gonna defend me from ten months ago too much.
@@alansmithee419 well that and I'm sure he was taught sex ed in school.
Be fair to Alan, I wouldn't want anything that had just been in liquid nitrogen coming anywhere near me either.
I briefly put my fingers in liquid nitrogen once under supervision. If you don't do it for more than a few seconds your body heat boils the nitrogen so it doesn't actually touch you. Leave them in and eventually you'll lose heat and then you'll freeze sharpish.
@@Dantalisman I still don't wanna do it.
Philip Monihan pussy! 😜
@@Dantalisman I've done it, too. If you do it right, there's almost no risk. And I've also smashed flowers and bananas like glass after a little nitrogen dip. We had the nitrogen as part of a high school experiment with ceramic superconductors back in the late 80's when they were brand new. The ones my classmates made didn't work, unfortunately, but we borrowed a couple of functioning ones from a physics research lab (where we also got the liquid nitrogen). Quite fun!
I've also operated a nuclear reactor (as have my classmates) in that physics research lab. Not many teenagers got to try that :)
Absolutely awesome. 4:30, I mean.
4:09 Stephen´s laugh is the best :)
3:15 I thought Alan as well to be honest.
Now mix this with Bayblades, thats the real use of this
Beyblades*
MySpace Tom? Is that you?
Finally! I saw a commercial or PSA in 1990 with a guy demonstrating this for a class. It was right after BTTF 2 premiered, and the director had joked that hoverboards were real, leading millions of dummies (myself included) to pass that rumor around for ten Pre-Internet years. Only saw the ad once, and never saw anything like it until now.
i like how Fry admits that "this is gonna go over his head" just before the experiment gets put on the table, i wonder if this has a double meaning..
1:06 WHO WOOFED?
widdicombe i think
Josh
You know, Kweer... I don't think it's any of your business.
Science is Awesome!
dear the QI elves. Whichever of you in charge of editing these clips to upload to youtube, can you ensure your dynamics are consistent? I enjoy watching these in bed while falling asleep and I find myself constantly turning up and turning down the volume from clip to clip so I don't wake my family but can still hear the video. I've just watched 3 in a row where I have changed my 0-100 volume levels from 30 for 1 video, to 60 for the next, then 40 for the 3rd, just to get the volume loud enough to hear without being way too loud. Cheers and thanks. Happy lockdown 2021
Just use headphones, mate. It is lot more safer.
@@ecneicsPhD4554 sure, why not enjoy the comfort of sleep with headphones on my head. nope.
I wish someone had demonstrated the Leidenfrost effect. The Mythbusters demonstrated it by dipping a wet hand into molten lead but it's much safer and easier to briefly dip your hand into liquid nitrogen.
There is an clip of it now
They demonstrated their lack of knowledge by having him put gloves on first
There's a QI demonstration of the Leidenfrost effect with water on a hot plate, and then he brings out a ring and a maze that both have one way etching on their surface so the droplet experiencing the Leidenfrost effect moves around. The droplet in the ring really builds up some speed, and the droplets in the maze always find their way out.
ua-cam.com/video/il-S2EL0w5Q/v-deo.html
ua-cam.com/video/il-S2EL0w5Q/v-deo.html
This was my favorite experiment. Thanks for the clip.
The best Scalextric EVER!
More demonstrations like this in the new episodes please!
1:16 in 1979, nine year old me had 5 warts “burned” off my hands (3 on my left hand, 2 on my right hand). They swelled up to blood blisters and about 2-3 weeks later they fell off. As a result all the pain I’ve felt since pales in comparison.
I see Fry, I click.
Khal Drogo I see Fry; I get my special lube, call in sick, wash the bed, cover it with rose-water and go to town on my arsehole.
Cubonica I'll just pretend I didn't read that...
Lewis T 😂😂
Cubonica yes.
I love this! I wish science was like this at school
But science was like this at school. Sometimes on a desk, sometimes in the wonderland of the imagination.
As we say here in Dublin, rapid.
Cooooolll... literally...ROFL!
That was AWESOME!
I'm having Bioshock Infinite flashbacks...
Now get in the bucket, Alan.
That guy from Oxford looks like he teaches science
That's actually really cool!
Hi there, I know, quite a random comment, but I have some morbid questions and I figured this'd be the right place to find people that'd know the answers.
I used to have a reckless science-teacher and a friend and I was wondering how bad this could've gone.
1. If you have a gas-cannister (a big one, with a wheel-sortof-construction on top) and you fill a jar with soap-water and blow the gas into the soap, you get bubbles filled with gas.
You can set those on fire and it'll create a large flame. What would happen if you set fire to the bubbles while the hose was still in the jar (whether above or under water) and the gas was still going?
Would the flame go into the gas-cannister or is that impossible?
2. If you sleep next to an open jerrycan of gasoline, will this be bad for your health? And are we talking temporary inconvenience or long-term-damage to your lungs? Let's say you sleep with an open jerrycan for about 4 years?
3. If you throw flour in a flame, you get a big flame. What if that flame touches the bag of flour, does it have the same effect or only in the air?
4. Those laughing-gas-things, are they flammable if you keep them under a gasstove? Let's say there is a fire and there are 7 laughing-gas-shiny-silver-things-capsules in the drawer underneath it?
5. Let's say you order radioactive material from China, for 'fun' and it's safe in epoxy. A minimal amount, but it does light up in the dark.
And then the epoxy breaks. What happens if you put that next to your food for years? Does it damage that?
6.Bit of a tricky question, I can understand if you don't answer it due to safety-reasons and that is completely fine, but if you start a motor in a house and the room fills up with blue smoke (I'm guessing coal monoxide? Or dioxide? I had a shit science teacher as said before) then that'd mean the end of a story, eventually.
If in the next room, a person is showering, would they also go? Just for the record, I was the one showering, I'm not planning on murdering a household. I just wonder if I was in danger, which I think I was. Would I have noticed the smoke or does it spread without smoke? It was running for 20 minutes, it was a motor from a large modelracingcar (And just for the record, was it dioxide or monoxide that comes out of a car? I thought it was monoxide and you've got meters for that, it was called the silent killer, I believe.)
Thanks in advance.
Oh right, I forgot one. If you cut your hand on a thick piece of sharp led, is that something to let a doctor take a look at? Or is washing it out enough? Not my hand btw, I'm fine.
That was amazing!!
"It is both repelling and attracting at the same time..." I thought he was describing me...!
Yeah man
Didn't Stephen mention seeing the rose demonstration at school in an earlier episode? Kinda neat that he gets to do it now.
Stephen: I'm just gonna line it up here
My OCD: !!!!!!!!
Cooling should be EASY in space, right? So it COULD get us to mars & beyond. Or am I missing something?
If so, please explain.
Yeah, I guess the main problem (or one of them) would be having something that could deal with all that cold nitrogen gas that's given off while its happening
I don't see how you see this as a solution to space travel. Wouldn't you have to build a track? Also Mars and Earth are constantly moving and the direction and distance are changing every second.
Chem-induced MagLev - brilliant
Sandy is funny but when stephen presents a question, he masters the topic..as if he were physically there or personally tasted that or.. I noticed Sandy often ignores guests's remarks that are slightly out of topic, coz she simply did not prepare her subject to that extent.(my opinion)
What's the music at the end?
The nitrogen bubbled because of the various differences between the two temperatures of the materials.
YAY! Alan and experiments! ALWAYS entertaining! : ))
Alan's so annoying. And he's gotten exponentially more annoying over time.
The professor was so cute
This... This is how we get hoverboards.
Jaime Nyx Lexus actually has done precisely this
@@KamilZKZA Cool! Video link! Video link! Video link! 🤞 🥺
Zetetik - ua-cam.com/video/bvYUq6Ox0Hc/v-deo.html
@@KamilZKZA Wheeeeeeee!!! > > > > > \o/
I was thinking let's try it on Alan when Sue said "I thought you were going to say let's try it on Alan"🤣🤣🤣
IF I GLUE MAGNETS TO THE BOTTOM OF MY SHOE AND THEN DUNK THE SHOE IN LIQUID NITROGEN COUlD I POSSIBLY SKATE ON THE RAILROADS?
no, rails would need to be a super conductor i believe. The levitation works due to superconductivity.
@@christophernicolson5086 The rails here aren't superconductors, they're just permanent magnets. The things floating on top are superconductors that get quantum-locked into position in the magnetic field.
Best Christmas present? Imagine a 10 year old with a bucket of nitrogen.
The kids will have their fun and after that the parents will have their quiet.
Cool af
Is Boothroyd by any chance a Major in some shady branch of the military?
I’ve had one of those discs for years, but could never get my hands on liquid nitrogen.
Because you forgot the gloves?
I like Sandi, but Stephen is the best person for the job.
Stephen is the best person that there is in general.
Who made that track, it is not "slot" but looks smart
What QI needs is more Stephen Fry. Well, let's use old clips and put them on the youtube channel.
If only the track were twisted into a moebius.
STOP LAUGHING JOSH!!!
Why is it called quantum though?
The levitation works based on principles of quantum physics
josh looks like alans son
Should have demonstrated the Leidenfrost effect as well!
They do in another episode, and I'm sure the official channel has uploaded it.
End song?
Update - they found a way to make it work at room temps
Very much not room pressures.
I also thought he was going to say "try it on Allen" 😂
wearing gloves when handling LN@ is more dangerous then handling it without gloves.
So THAT'S what the mediums and clairvoyants used...
F**king magnets, how do they work?
Quantum spin
Yeah basically
Them scientists might explain this phenomenon but I know the truth: it's magic! 🔮
This is how the Lexus hoverboard works.
And America gets Jerry Springer and the Kardashians.......
Friction-less transport would also mean EXTREMELY high speed transport. There's nothing stopping you from going at ridiculous speeds because there would be next to no heat transfer and it couldn't come off the track. With enough aerodynamic engineering it would make airplanes obsolete
It is NOT frictionless!
It kills me that they got someone to bring them a bisco puck and liquid nitrogen and the thing they thought of was "maglev". SMH
If you were a billionaire is there any reason why you couldn't scale that track up to a human size 10m hoverboard track? And just wear shoes that protect you from the cold?
You can feel the scientist thinking: “What a bunch of idiots....”
The dude teaches physics at Oxford university, I think he earned the right. XD
The most Boothroyd looking man I’ve ever seen
This is what I thought high school science would be like. Turns out, they only did the cool stuff at year 12 and 13, and I was homeschooling myself by that point.
whaat a pUuUuUSSssyy
But did he fool us?
So why was that professor there?
I’ll
Cut to undergraduates dipping whatever happened to be in people's bags into liquid nitrogen 😂
I doubt they were regulation cryogenic gloves. First clue is the Velcro to secure them, they are meant to be loose fitting incase liquid nitrogen permeates the gloves and cause more harm than if you were not wearing any at all. That way they can be quickly removed, sitting down while handling it is also not advised. While the BBC health and safety team clearly hadn’t a clue you would assume the professor would at least some point provided the correct gear and advice seeing as he supplied everything else. There are teenagers overclocking CPUs who are more safety conscious than these muppets.
Waaara pussy
the volume is so up and down I have to turn the sound off. aweful
PUT THE FUCKING GLOVES ON
When was this recorded out of interest?
+al35mm
Nah this was recorded for money not for interest.
But surely they make interest on the money?
+al35mm
Ahh yes that is quite interesting.
I used to rent my sister to our uncle for £20 per go and I was very shrewd and put all the money into a high incest account!
+al35mm
Ahahahahaha very nice. Glad you are keeping it in the family.
My sister keeps moaning her cousins name while I am screwing her. It is very distracting.
Andrew seems like the kind of nerdic person you do not feel like commiting nasty jokes on after first minutes of meeting... But he is also British and as usual: yeah, we can chase that but cannot accomplish that..
Scientists invented magic.
Does it say analgene on the side of the bucket?
Put the fucking gloves on!
Sitting down using liquid nitrogen. Now there is a safety hazard.
More ignorant rubbish, from an anonymous poster.
Stephen! Wash your mouth with soap!
Flat earthers are laughing at this.
Not sure what quantum physics has to to with that though.
The magnetic effects induced by the ceramic are explained via quantum mechanics, i think its related to bose-einstein condensates
What makes this work, is quantum effects. A bit too elaborate to explain here.
at low temperatures, electrons, which are fermion particles, can pair up and the pair behaves as a single boson particle. Fermion and boson states follow different quantum statistics because of their spin and exchange symmetry (quantum properties with no analogous classical property), and this difference is what allows all electrical resistance to vanish, so it's very tied up in QM. It's not very complicated to explain exactly how it works (googling superconductivity will eventually lead to a decent explanation) but it is a bit too long-winded for a single bit in a comedy tv episode.
Everything has to do with quantum mecahnics.
Being a super conductor or being a repelling magnet that attracts at the same time is why it’s quantum mechanics
I can't believe they let him mess with liquid nitrogen without even standing up first. Remember the lava lamp? If he'd spilled it he could have lost his leg.
{:-:-:}
Rubbish.
With liquid Helium, yes.
Agreed this was very dangerous he should have been standing and wearing a protective apron.
Science found this, not religion.
No one said otherwise, did they?
Yikes. I know that this is not going to be read by anyone, BUT you should NEVER use gloves when working with liquid nitrogen. Goggles, yes 100%, but IF you were to drop some liquid nitrogen onto your skin, it will probably "cold burn" the parts of you it touched while it runs off your skin. Bad. If you are wearing gloves and it gets into the glove, it will pool in the finger tips and do masive irreparable damage to the finger in that glove.
Competitive Overclockers use it all the time, and they use it far saffer than any of the nomad scientists that love to show it off for kids.
You should always wear gloves, cryo gloves that go up your arm.
I thought the word 'quantum' dealt with time manipulation?
no. a quantum is a small portion. as far as i know it was first used in physics after plank tried to explain the radiation of hot objects. we had a model that described it for low temperatures and one for hot temperatures, but not in between (UV catastrophe). when plank made his model, he assumed in it, that light would be portioned in small quanta, which was confirmed since then (photons).
quantum physics deals with things on a small scale at which we can observe "energy portions". in other words where the enery is so small that the uncertainty principle plays a role and so on.
So then why do they use the word "quantum" in most thing that deal with time?
do you have any example? because i don't. and i'm studying physics for god's sake! (i'm not saying that there are no phenomena with "quantum" in their name that deal with time, just that they are not the majority to the point that i can't even think of one. If you have one, please name it and I'll try to explain why it has quantum in it's name)
I'm not insulting you, I promise! Guess I'm the idiot for seeing things in literature and video games using "Quantum" to indicate something about time/space.
Like the game Quantum Break, about time breaking, or hell, the TV show "Quantum Leap" where some dude (Scott Bakula) goes back in time.
I didn't take it as an insult. after writing the first part of my answer i saw that it seemed angry so i added the brakets, but seems like it wasn't enough...
well yeah, those words seem "sciency", so hollywood and comic authors and some game designers use them to make up stuff to explain their badly written sci fi stuff.
(btw, a "quantum leap" would technically be a very, very tiny leap. so tiny that you wouldn't be able to measure it)
Why do some women wear men's hair styles? It is very off putting. I suppose I am not Woke enough.
Hairstyles are not gendered
The Israelis invented this ten years ago.
What - all of them?!