@AlemitoFilms Superconductivity and superfluidity are closely related - they're both Bose-Einstein condensates. In a sense superconductivity can be regarded as superfluidity for electron pairs
Wow, that was cool. When I'm done with my life, I still won't understand it. Start a protest for conserving helium so one day someone can understand what's going on.
@m9kuhn Not sure I understand your question. The atoms in a superfluid or supersolid would all be in the ground state. But the ground state doesn't have zero energy. As you lower the temperature more atoms go into the ground state. Because they are in the same state it is impossible to distinguish them. We are not used to think about objects being in more than one place at the same time but that is literally what happens and it gives rise to all these phenomena.
@Zantorc Thank you for the comments under the videos and uploading them. you seem to have a good understanding of this aswell. May I ask how you obtained these videos and what is your connection to the subject? h
They are public domain videos which I downloaded 15 years ago - I can't remember the site I got them from. The sound on them was quite bad and I had to do quite a bit of processing to improve it. I did physics at university and this happened to be an area I was interested in, along with superconductivity (which is closely related).
@mwdub02 Regard He II below the lambda point as composed of 2 fluids: 1)A superfluid fluid with perfect flow reversible in the thermodynamic sense. 2)A normal fluid with irreversible flow. Just below the lambda point most of the liquid is composed of normal fluid at absolute zero it would consist of only superfluid. The ratio depends on only temperature and it's a dynamic equilibrium (think of an atom sometimes belonging to the superfluid and later the normal fluid - not as being fixed forever).
@m9kuhn No even at a basic level that would violate quantum mechanics. As you localise the position of an electron to a smaller and smaller space you must increase its momentum (and therefore velocity), from the Heisenberg uncertainty principle.
...cont When it flows out of the beaker with the porous bottom, its only the superfluid which flows out. But the normal fluid left behind is still below the lambda point so it must adjust its ratio to be partly superfluid (which then immediately flows out). When the temperature is very low it flows out more rapidly because most of the liquid wants to be in the superfluid state.
Shouldn't we be thanking you? As you can see I cleaned the audio and video slightly (and got the synchronisation right). If you'd like a copy let me know.
@Zantorc Continued... When it comes to supersolids the jury is still out, but the evidence is mounting that they exist. In such a supersolid atoms in the superfluid state would lose individual identity. They would behave as a single entity. Each superfluid atom would be at the same position as every other superfluid atom.
@Zantorc what i ment was at absolute zero do the electrons stop moving around the protons as if they were frozen as well, which would make a super solid
@TheCryptore Superfluidity in solids is only a theoretical possibility and would require temperatures many oders of magnitude smaller. In addition glass would not have the necessary quantum mechanical properties to become superfluid. Superfluidity is due to the atoms forming a Bose-Einstein condensate, which has only been observed in helium and clusters of a few thousand rubidium atoms.
we're still trying to think of ways to change the world with them; it's not *STRICTLY* thought of as "novel". But then, we also literally have teenagers going around building their own thermonuclear reactors (not power-producing, unfortunately) for fun, sooo....
@TheCryptore Not necessarily. Superfluidity in anything other than liquid helium requires cooling below 0.000001 degree K. A 'supersolid' is solid but at the same time superfluid. There is some evidence to suggest that the cooled rubidium atoms are crystaline and therefore supersolid. A supersolid may have been seen for the first time in 2004 in helium crystals - it's still the subject of debate. Macroscopic quantum phenomena like this are not just weird, but weirder than you can imagine.
It's almost as if He-2 is seeking to conserve its state... So heat is introduced, i.e., a low-density pulse of photons is directed at some point in the He-2, and the He-2 sheds these photons in a regular fashion, producing this regular wave outward at the speed of "second sound," as this guy puts it, which I would guess is the fastest that He-2 can return to its ground state. I wonder if you could make a clock based on this phenomenon...
I must be daft cause I canny get how you can have a liquid in a glass tube at -271 celcius in a room at room temperature in my mind it would explode under pressure of turning to gas?
the guy said it is ""reversible in the thermodynamic sense""..........then at the end he said'" irreversible"". he has confused me...cause it cannot be both rev and irrev.
Watch the last part again. He says that liquid Helium II is capable of two different types of motion. One of them is reversible, the other one is irreversible.
This is some evidence based material proving that an elements with a specific atomic weight surrounded by more of the same element with the same atomic weight can possess different but predictable properties. Application of quantum physics in real world. The same should/would apply to metals of periodic table of elements. How do you form metals of a specific element with all atoms possessing same atomic weights together? Each specific atomic weight class for every specific element would have different properties or slightly different properties, but predictable after observed. If these metals could be produced, the applications for use in technology are mind baffling. I am not a physicist, I hope people smarter than me are looking into this right now. Unfortunately, research like this is typically done behind closed doors in secrete. I understand why, from my limited perspective, but still unfortunate.
This is best educational video I have seen so far. Its quite detailed and yet very entertaining. Thanks a lot for putting it here.
Thank you very much for uploading these marvelous videos. Possibly the best videos I've ever seen on youtube along with Feynman's interview.
I thought supercunductivity was one of the strangest things that could be observed by naked eye, now I've changed my mind! Great explenation!
You still alive mate?
@@machetetazer6712 hi
@@machetetazer6712 You still alive mate?
@@AlemitoFilmsayy yyyyyeee !! ✨
This is great. Thanks for uploading!
Thank you for the experimental view.....
They found out over 50 years ago, and I found out just 20 minutes ago.. I wonder what other thigs I don't know...
found anything cool in 9 years
No but try 12
@AlemitoFilms Superconductivity and superfluidity are closely related - they're both Bose-Einstein condensates. In a sense superconductivity can be regarded as superfluidity for electron pairs
Wow, that was cool. When I'm done with my life, I still won't understand it. Start a protest for conserving helium so one day someone can understand what's going on.
@m9kuhn Not sure I understand your question. The atoms in a superfluid or supersolid would all be in the ground state. But the ground state doesn't have zero energy. As you lower the temperature more atoms go into the ground state. Because they are in the same state it is impossible to distinguish them. We are not used to think about objects being in more than one place at the same time but that is literally what happens and it gives rise to all these phenomena.
@Zantorc
Thank you for the comments under the videos and uploading them. you seem to have a good understanding of this aswell. May I ask how you obtained these videos and what is your connection to the subject?
h
They are public domain videos which I downloaded 15 years ago - I can't remember the site I got them from. The sound on them was quite bad and I had to do quite a bit of processing to improve it. I did physics at university and this happened to be an area I was interested in, along with superconductivity (which is closely related).
@mwdub02 Regard He II below the lambda point as composed of 2 fluids:
1)A superfluid fluid with perfect flow reversible in the thermodynamic sense.
2)A normal fluid with irreversible flow.
Just below the lambda point most of the liquid is composed of normal fluid at absolute zero it would consist of only superfluid. The ratio depends on only temperature and it's a dynamic equilibrium (think of an atom sometimes belonging to the superfluid and later the normal fluid - not as being fixed forever).
@m9kuhn No even at a basic level that would violate quantum mechanics. As you localise the position of an electron to a smaller and smaller space you must increase its momentum (and therefore velocity), from the Heisenberg uncertainty principle.
This should be a single Film
...cont When it flows out of the beaker with the porous bottom, its only the superfluid which flows out. But the normal fluid left behind is still below the lambda point so it must adjust its ratio to be partly superfluid (which then immediately flows out). When the temperature is very low it flows out more rapidly because most of the liquid wants to be in the superfluid state.
Thank you. Extremely interesting!
Shouldn't we be thanking you? As you can see I cleaned the audio and video slightly (and got the synchronisation right). If you'd like a copy let me know.
@Zantorc Continued... When it comes to supersolids the jury is still out, but the evidence is mounting that they exist. In such a supersolid atoms in the superfluid state would lose individual identity. They would behave as a single entity. Each superfluid atom would be at the same position as every other superfluid atom.
@Zantorc what i ment was at absolute zero do the electrons stop moving around the protons as if they were frozen as well, which would make a super solid
Awesome
@Zantorc which would mean that the atoms themselves are not moving on the molecular and they have reached absolute zero right?
@TheCryptore Superfluidity in solids is only a theoretical possibility and would require temperatures many oders of magnitude smaller. In addition glass would not have the necessary quantum mechanical properties to become superfluid. Superfluidity is due to the atoms forming a Bose-Einstein condensate, which has only been observed in helium and clusters of a few thousand rubidium atoms.
Nowadays we think of superfluids as novel, back then it was thought of as something that would (yet again) change the world.
we're still trying to think of ways to change the world with them; it's not *STRICTLY* thought of as "novel".
But then, we also literally have teenagers going around building their own thermonuclear reactors (not power-producing, unfortunately) for fun, sooo....
Second Sound is the name of my garage band.
@TheCryptore Not necessarily. Superfluidity in anything other than liquid helium requires cooling below 0.000001 degree K. A 'supersolid' is solid but at the same time superfluid. There is some evidence to suggest that the cooled rubidium atoms are crystaline and therefore supersolid. A supersolid may have been seen for the first time in 2004 in helium crystals - it's still the subject of debate. Macroscopic quantum phenomena like this are not just weird, but weirder than you can imagine.
this was amazing bruv
It's almost as if He-2 is seeking to conserve its state... So heat is introduced, i.e., a low-density pulse of photons is directed at some point in the He-2, and the He-2 sheds these photons in a regular fashion, producing this regular wave outward at the speed of "second sound," as this guy puts it, which I would guess is the fastest that He-2 can return to its ground state. I wonder if you could make a clock based on this phenomenon...
fantastic :D
Wow
I must be daft cause I canny get how you can have a liquid in a glass tube at -271 celcius in a room at room temperature in my mind it would explode under pressure of turning to gas?
Very good insulation is the answer.
the guy said it is ""reversible in the thermodynamic sense""..........then at the end he said'" irreversible"". he has confused me...cause it cannot be both rev and irrev.
Watch the last part again. He says that liquid Helium II is capable of two different types of motion. One of them is reversible, the other one is irreversible.
Normal component: irreversible
Superfluid component: reversible
Superfluid helium goes from cold to hot 🔥 violating the second law of thermodynamics 😮.
This is some evidence based material proving that an elements with a specific atomic weight surrounded by more of the same element with the same atomic weight can possess different but predictable properties. Application of quantum physics in real world. The same should/would apply to metals of periodic table of elements. How do you form metals of a specific element with all atoms possessing same atomic weights together? Each specific atomic weight class for every specific element would have different properties or slightly different properties, but predictable after observed. If these metals could be produced, the applications for use in technology are mind baffling. I am not a physicist, I hope people smarter than me are looking into this right now. Unfortunately, research like this is typically done behind closed doors in secrete. I understand why, from my limited perspective, but still unfortunate.
this is what they should be teaching in public schools. Not crap about Rocks and Global warming
lol climate change denying fool
mwdub02 the Normal State is Irreversible and the Superfluid State is Reversible.
quantum mechanics aka the scientific version of "nobody fuckin knows"
((1e+5 pascals) / (250 * (kg / (m^3))))^(1 / 2) = 20 m/s
((1 bar) / (250 * (kg / (m^3))))^(1 / 2) = 20 m/s
Liquid helium = 125 kg @ 1 bar
Elastic Bulk Modulus & waves speed
damnit this is what americans should be concerned with.
Unfortunately things have NOT improved in 12 years,
It sounds like he has an Indian accent lol