superconductivity

[mrblahblah951]

whoever wants a good explanation of this go to lance the blue knights vid, its actually a really good explanation

[nickharvey7]

Interesting video!

This is an invitation to everyone or anyone to see an artist theory on the physics of light and time!

This theory is based on two postulates

1. Is that the quantum wave particle function Ψ represents the forward passage of time ∆E ∆t ≥ h/2π itself

2. Is that Heisenberg’s Uncertainty Principle ∆×∆p×≥h/4π that is formed by the w- function is the same uncertainty we have with any future event that we can interact with turning the possible into the actual!

[Korn1holio]

we are actually living in the world of magic.

Even better

Science > magic

[DotaManeuvers]

69

[suska16]

God, I have a bug report.

[suska16]

God, I have a bug report.

[0osasao0]

maybe david copperfiled used this principle in his flying show !!!!

[BigmouthXStrikesX]

OMg that was like magic!

[helm84]

when cooled at an extreme temp. The atoms in the black square get lined up and create a magnetic field. the magnetic field creates lots and lots and lots of flux lines. when the magnetic disc is placed in the many flux lines something called flux trapping happens.

[helm84]

Flux trapping



[CostaMay]

Awesome! Amazing! totally crazy man! Is amazing the things we can do with science.

[mary8756]

What kind of material is it?I think, the combination of Ba,Ca,Cu has the highest critical temperature or?

[ektybrekty]

@mary8756 MMCs do have the high critical temps but as they are using liquid nitrogen/helium here it indicates that material is a metal like zinc, tin or aluminium as these become superconductors at low temperatures around 0K

[Maxables]

SHE BLINDED ME WITH SCIENCE!

[nepomuzem]

that's called Meissner effect, wich means perfect diamágnetism in a superconductivity state, wich means that if you cool some kind of matherials to a very very low temperature they expell every magnetig field from them, so if you put a magneto above it it will float. The liquid probably is liquid nitrogen or liquid helium.

[irisclow]

AWESOME!!! Really cool. I don't have the material to make it. Can I use this vid. in a project? it's REALLY COOL!

[Jonny911c]

Black magic! burn the witch!

[WoWkemon90]

You sir, have just invented the theory of hover crafts.

[simonmitchellbird]

who needs maglev trains when you can just pour liquid helium on the track!

[pyzrm19]

how does superconductor work?? by opposing the earth's magnetic field-diamagnetism?? or with a high and low- temperature???

[steam707]

What liquid was that?

[Jonny911c]

@steam707 Liquid nitrogen

[exosproject]

In collaboration with the physics research department of University of Geneva, Exos Performances Project has been developing creative applications of superconductive levitation. We are finally free to reveal this to the world. This is scientifically huge and artistically remarkable. I hope you enjoy watching our video and encourage you to distribute the link and youtube video to all your

friends!

[marjanfamili]

i want this video

[PathIntegration]

explained by BCS theory in the 60's... This is 50 year old tech. The only interest is in how cold do you need to make the material before it is a SC, and what that material would be?.

[BullPavl]

@PathIntegration BCS doesn't explain high-temperature superconductivity (the dude on this video is working with liquid nitrogen ~77K). This problem is not solved yet.

[Zantorc]

@BullPavl You're right to say that BCS theory doesn't apply, but wrong when you say there is no explanation. In fact there is now a fairly good explanation and understanding of high temperature superconductivity.

[vanderbilt887]

@BullPavl

Actually, string theory has just now provided the beginnings of a theoretical explanation for high-temperature superconductivity using gauge/gravity duality. Cf. the work on cuprates by Hong Liu and John McGreevy from MIT, August 5 edition of Science.

[TheVooDooLukeDo]

This incredible act is caused by gods power, he is proving his love and wrath to you by first showing it on an object of no value, and if you dont heed his warning and prey soon, 2012 will come and you will not be amoung the few who rise into the heavens.

[PathIntegration]

@TheVooDooLukeDo I can't wait for 2012 too.. esp the day after when armegeddon didn't come... what then?

[Dpiiiius]

@PathIntegration lol

[PathIntegration]

@TheVooDooLukeDo or it's just explained by BCS...I think I see your sarcasm now

[TheVooDooLukeDo]

@PathIntegration HAHA, i was hopin someone would get anonyed by this comment...but i WASN being sacrcastic! HA

[Iplaywow1999]

Hey what is the thing below the metal/copper

[KeepitSwag]

what is a superconductor. im doing this for my science project.

what kind of metal is it. not wat it does

[milesjsandifer]

I think it's a form of graphite, not a metal

[PathIntegration]

@milesjsandifer then you'd be wrong, nothing to do with graphite

[LeeXai1988]

@milesjsandifer

it is propably YBa2Cu3O7, a ceramic.

[EuroNetWelt]

Unter unterschidlischen Temperatur ändert sich auch in der Kugel die Stromrichtung und die Richtung der Weißebezirke damit ist es nicht ein eviger Motor. Wenn wir zwischen den Scheibe und Tisch Leitfähige Werkstoff legen, wird die Scheibe unter fallen.

[tangnatalaga]

Can you imagine if we ever discover a material that is superconductiong at room temp? We would have electic trains that don't need powersupply!! We would have computers ten times faster that dont need batteries!!

[tangnatalaga]

When a superconducting material is brought below its "critical temperature" electrons can move freely without the need for electric current to push them, and electrons can move about freely in the semiconductor without loosing energy. Electric current is induced in the superconducting ceramic. which in turn creates magnetic field that repels that of the permanent magnet.

[tangnatalaga]

The type of ceramic used here became superconducting at 90K or below. Superconductivity allow electrons to move freely without the need for electric current to "push" them. Magnetic fields can pass through, and be present in most material including superconductors. When a superconducting material isbrought below itscritical temperature, the magnetic field is forced out(Miesner effect). Current is induced by the ceramic exhibiting superconductivity.

[evilmaster87]

great Maissner effects on a block of YBCO

[kaiuycn]

dude... u just explained it in your title rofl.

[basslinet]

@kaiuycn Thats not what he meant lol, explain WHY it happens :) Then you can use it to make useful things

[Zantorc]

I can explain this. A proper explanation can be found on my channel.

[caiolagana]

very nice

[fungchowlinhao]

that stuff is supposed to be like -300 degrees

[angweeshuen]

the lowest possible temperature is -273.15 degrees celcius. or at least thats the lowest obtained or discovered up till now.

[Thymonico]

Well... We can with quite confidence say that it's the lowest. Temperature is the measure of movement of small particles. 0 Kelvin or -273,15 degrees celsius is when the small particles lose all their movement - and losing more movement (getting colder) than no movement, is difficult... ;)

[tangnatalaga]

The ceramic used here becomes superconducting below 90K, boiling point of nitrogen is -321 which is 77K. So it works well. Another type of ceramic becomes superconducting at 139K so we are getting there. Hopefully we se superconducting material in room temp in our lifetime.

[pyat77]

@tangnatalaga yes, for my research project i am considering looking at the atomic structures of high temperature superconductors and looking into finding a relationship between critical temperature and structure. So we may be able to theoretically produce a superconductor with the critical temperature the highest possible. Do you know of this allready being done? I haven't seen it.

[tangnatalaga]

@pyat77 not yet but if there is one it would probably be top secret.

[anafredd]

holy smokes.. this is frikken awesome!!

[Jiraya12345]

Why doesn't the magnet just bounce off? What keeps it hanging there?

[AzonicZeniths]

Meissner effect

[Zantorc]

The Meissner effect has very little to do with this. It's down to pinned flux and induction in perfect conductor.

[gordan99]

Shouldn't you be wearing gloves?

[DieBittereWahrheit]

science... awesome!

[vazqal10]

that is wicked!

so coooool.

makes me want to be a scientist=)

[lostismyconstent]

the video "How Superconducting Levitation Works" explains it well but my gosh that guy must either have no nerves in his hands or be crazy cus that stuffs cold!

[ArchAngel119]

i think that both might be true

[AyakashiBakeneko]

If you look, he never actually touches the liquid nitrogen or the superconductor -- only the magnet

[alsojustforme]

you know humanity is lost when you show your friends this and they say "who cares" and proceed to watch heroes season 2

[matth317154]

haha lol yeh

[LanceTheBlueKnight]

Who can explain this?

Well it just so happens that I can explain this...

watch?v=h8WtaL4hJ5A

Enjoy!

[rlarach]

what is the block under the magnet?? Where can I get one?

[AyakashiBakeneko]

It's a superconductor. Just look of "Meissner effect kit" on Google.

[macronencer]

Nice! The last few seconds are the coolest part (no pun intended).

[dmaster144]

who ever figures this out at a normal temperatre would make millions.

[BanderHM]

scientific magic, cool

[Marcshark99]

Meissner effect! XD

[Fronasty23]

I actually saw this demonstrated at a lecture on superconductivity at UH. It's called the Meissner effect. The magnet is simply being repeled and attracted to the superconductor. I saw it done with YPCO.

[RFTAEC100]

The Meissner effect, also known as the Meissner-Ochsenfeld effect. It's the expulsion of a magnetic field from a superconductor when exposed to a critical low temperature and it was discovered in 1933 by Walther Meissner and Robert Ochsenfeld.

:P

[Ironmaiden3p]

Hi, I was wondering if you could send me this video because I'd need it for my science project at school. I'm looking for videos like that. And by the way, my projet is for thursday ;) , so answer me fast plz :)

[Mozza314]

Get the latest realplayer (there's a free version :D)... it'll let you download youtube vids. After you install it when you're watching a youtube vid a little button will come up saying "Download This Video"

Good luck with your project

[OklahomaRed]

the superconductor doesnt allow magnetic fields to "exist" if you must. therefore causing it to be pushed into the air. this is in simplist terms for lack of time.

[Sanch3zn]

That black square is called YBCO, it is a recently discovered compound that when is frozen to 90 kelvins has a repelling and attracting for to a magnet at the same time, hence the levitation.

[dxhaloxc]

thats amazing sir.

[Sanch3zn]

It sure is, The Mag-Lev train in China is a train that uses this amazing feat of compounds to keep it levitation hence the name MAGnetic LEVitation.

(caught your comment at 30 seconds :P

[jagermaster]

Hover boards!

[Synematic]

Not unless the beach sand was made of YBCO

[TheInquisitive]

The superconductor here in the so-called 1-2-3 compound, which is also known as YBCO. Upon cooling with liquid nitrogen, it becomes perconducting, and a perfect diamagnet. As a consequence, the magnetic field imposed by the rare earth (ceramic) magnet is repelled due to subsurface currents, which create an oppising M-field. This is called the Meissner-Ochsenfeld effect -the fundamental effect behind the so-called magnetic levitation.

[gammaparticles]

The material in the center causing the magnet to levitate...What is it exactly? It seems to be greenish

[cyberdemon107]

1) he means oxygen

2) paramagnetic means it gains qualities of nearby magnetic fields, and if you watched carefully, it is COUNTERACTING the field. And it is not the liquidgas, but the black solid that was supercooled, that produced the oddity

op:i cannot, i am quite baffled

[talkandtunes]

liquid oxygen is paramagnetic. duhhhhh.

[colinshark]

Don't be dumb.

It's been a while since I had physics, but what's happening here is the magnets motion is causing current in the superconducting material. The current instantly produces a counteracting magnetic force. This isn't possible with a "normal" conductor since the counteracting force won't be strong (efficient) enough.

You can see the same thing by dropping a magnet down a copper pipe. The magnet moves very slowly due to the same principle.

[Flo422]

i think you mean liquid nitrogen