This has always fascinated me, and I can only imagine the confusion this all caused when first discovered. The demonstration looked like a huge hassle and I can't even imagine what it would be like to try and make meaningful measurements in such an environment. Thank you for sharing.
Sadly there are under 0.5K likes under this awesome demo. And 10000K likes under "my friend fall in dirt". At this rate we revert to homo erectus in no time.
I really wish I had the chance to study physics with a good professor. Understanding the dynamic relationship between our consciousness and interactions with the physical world around us is the key. Thank you for sharing all these lectures, it really does make a difference.
As a layman in this field but a science enthusiast in general, I love the enthusiasm of these folks. You can hear the excitement as they count off each drip. In any other context, counting drips is like watching paint dry. In my own field (software, and I’m not on the bleeding edge of ML or anything), seeing successful results of an experiment like these is rare, but I can absolutely relate. 😁
My name is Jake Gilbert. Perry, MI. Self taught from books I personally purchased from Sean Carrol to Steven Hawking. I understand it just need a touter in the math and a nudge from one of you guys to help me get back into school and into this field. To study for decades and with any luck, have at least one contribution to our understanding of the universe.
I wish to know 2 things : 1 will the condensate liquid helium be contained by allotropes like graphene and fullerenes, 2 : what if any is the thermal effect on said liquid helium when exposed to a high tesla magnetic filed . Asking for a friend
at 12:09 what you imply is that the helium cannot pass through the filter in the fountain demonstration because the non superfluid above the filter is preventing it , not because of it's viscosity , because , like the glass , the superfluid helium will bind preferentially with the filter molecules and once through the filter , it will proceed to creep up the glass , but only if no fluid is above the filter initially.
This is simply osmosis. Same with mixing salty and fresh water, separated by semipermiable membrane. This feature of superfluid helium was not that exciting.
Videos: (1) Coolest video (this one) : ~0.03M views (2) Guy fixes a vacuum pump (a good pump, but still) : 1M views (3) "A kitten farted while pooping" - 100M views. Dear ladies and gentlmen, we are so screwed. And no. Me inviting a friend to watch the video on physics wouldn't change a thing: 0.03M vs 0.03001M can't make the difference. Make science great again.
electrostatic forces of an attraction between the helium atoms and the atoms in the container. The helium is pushed up because of random pressure and motion on the helium atoms and then attaches to the side of the container instead of falling back down. Eventually, movement is sufficient to push the liquids all the way up the side of the container walls, at which point it effectively begins to syphon itself out.
Same source of energy as for water rising up on wet cloths. I bet one can make scratched (for capillary forces) surface of glass to have about the same dripping result. Most of the cool properties of superfluid LHe cannot be demonstrated in a lecture room. Because these demos would require way too fancy setup.
I wonder if they had any trouble with their iPhones shutting down (due to Helium diffusion into their MEMS oscillator). I don't know if this was still a problem in 2020... Definitely higher chance in 2020 than in the excellent Alfred Leitner's film about superfluid Helium (1963 :-) )
They didn't submerge their phones in liquid helium. I doubt the concentration of helium gas rise above 1% in the lecture room. In which case it is like worrying that 50-60% humidity at room temperature hurts a cellphone.
What fascinates me as much as the experiment itself are the methods used to achieve such a state. After the explanation at the beginning, while still no small feat, it was surprisingly simple. Basically layers of transparent insulators mixed with pressure reduction, when all is said and done. (Read More). I'm fascinated that one can literally achieve a temperature close to 0 K with a device smaller than a barrel while standing a few feet away at room temperature.
We use liquid helium to remove noise in telescopes like JWST telescope. Such an instrument wouldn't function withough liquid helium. This holds for the majority of IR telescopes. Likewise NMR and MRI require LHe. But LHe costs too much, making it impractical for moving stuff.
The main danger is to break the helium tank. This amount of LHe in their Dewar flask costs between a new car and a nice house. Otherwise it is all safe ("in the hands of those skilled in art" , as patents say).
In my travels, I keep seeing references to the density of superfluid He-4. It seems it decreases so my question is does this mean its volume increases or its mass disappears?
Volume increases. Mass dissapears only if you move it elsewhere (evaporation). Mass can turn to energy under extreme conditions (like a nuke blowing up), but even then you only convert less than 1% of mass to energy.
Is it possible to dissolve dyes, like fluorescein, in liquid and/or superfluid helium? If fluorescein only dissolves in liquid helium, what happens when it goes superfluid?
You cannot dissolve dyes in liquid N2, which is a much better solvent. Solvent should provide some insentive (like hydrogen bonds, Van der Waals forces etc) to promote solubility. LHe provides none. Enthropy stimulus can be ignored at this temperature. I doubt you can dissolve anything besides Ne or H2 in meaningful quantities.
(1) Apparatus Do you mean the Dewar flask that they used to transport liquified gasses? Or the Schoot filter used for the fontain? Or a vacuum pump? (2) For these experiments you would need liquified gasses. You can get liquid nitrogen: m.ruclips.net/video/dCXkaQa53QQ/видео.html But liquid helium - you can only get it in a lab. Onle 1-2 labs per decent university work with it. Your best bet is to have a friend in an NMR lab (which is more difficult than getting platinum.
This has always fascinated me, and I can only imagine the confusion this all caused when first discovered. The demonstration looked like a huge hassle and I can't even imagine what it would be like to try and make meaningful measurements in such an environment. Thank you for sharing.
Perhaps we will one day have room temperature superfluidity?
@@talldarkhansome1 what, no
@@talldarkhansome1 Room temp superconductivity is already achievable so maybe someday it can work? Pretty exciting stuff.
Wonder where all helium goes when released on Earth travels upward rapidly cooling in temperature and decreasing pressure..
Liquid helium is hard to handle. And is very expencive.
I love people getting so excited about science. These are the people who change the world. Thanks for posting.
Sadly there are under 0.5K likes under this awesome demo. And 10000K likes under "my friend fall in dirt".
At this rate we revert to homo erectus in no time.
Honestly, this has great footage, but it could be explained a lot better.
Continue these experiments man, love from India 🇮🇳🇮🇳❤️
I really wish I had the chance to study physics with a good professor.
Understanding the dynamic relationship between our consciousness and interactions with the physical world around us is the key.
Thank you for sharing all these lectures, it really does make a difference.
As a layman in this field but a science enthusiast in general, I love the enthusiasm of these folks. You can hear the excitement as they count off each drip. In any other context, counting drips is like watching paint dry.
In my own field (software, and I’m not on the bleeding edge of ML or anything), seeing successful results of an experiment like these is rare, but I can absolutely relate. 😁
High five, collegue. I am in ML, but nowhere near the bleeding edge: just using libs, written by geniuses.
this is bizarre - what is the refractive index of superfluid helium? I don't see any distortion or "lensing". So weird and beautiful!
My name is Jake Gilbert. Perry, MI. Self taught from books I personally purchased from Sean Carrol to Steven Hawking. I understand it just need a touter in the math and a nudge from one of you guys to help me get back into school and into this field. To study for decades and with any luck, have at least one contribution to our understanding of the universe.
Math is tough. For instance, see the derivation of the Einstein field equations
m.ruclips.net/video/foRPKAKZWx8/видео.html
Excellent experiment guys. Super.
Man!! This is so cool. 😍
I wish to know 2 things : 1 will the condensate liquid helium be contained by allotropes like graphene and fullerenes, 2 : what if any is the thermal effect on said liquid helium when exposed to a high tesla magnetic filed . Asking for a friend
at 12:09 what you imply is that the helium cannot pass through the filter in the fountain demonstration because the non superfluid above the filter is preventing it , not because of it's viscosity , because , like the glass , the superfluid helium will bind preferentially with the filter molecules and once through the filter , it will proceed to creep up the glass , but only if no fluid is above the filter initially.
This is simply osmosis. Same with mixing salty and fresh water, separated by semipermiable membrane.
This feature of superfluid helium was not that exciting.
Great experiment guys!!!!
Great video. I enjoyed it.
Videos:
(1) Coolest video (this one) : ~0.03M views
(2) Guy fixes a vacuum pump (a good pump, but still) : 1M views
(3) "A kitten farted while pooping" - 100M views.
Dear ladies and gentlmen, we are so screwed. And no. Me inviting a friend to watch the video on physics wouldn't change a thing: 0.03M vs 0.03001M can't make the difference. Make science great again.
That transfer line -- did you warn the NMR team before you borrowed it? :P
how did they amanage to freeze it so lowe..Lne is minus 196 c
Check out that drip! 😎
"iTh" "Partitions" of "The Punctuation" of "The Business Decryption keys"
Where does the energy come from which causes the helium to creep upwards out of the beaker?
electrostatic forces of an attraction between the helium atoms and the atoms in the container. The helium is pushed up because of random pressure and motion on the helium atoms and then attaches to the side of the container instead of falling back down. Eventually, movement is sufficient to push the liquids all the way up the side of the container walls, at which point it effectively begins to syphon itself out.
Same source of energy as for water rising up on wet cloths.
I bet one can make scratched (for capillary forces) surface of glass to have about the same dripping result.
Most of the cool properties of superfluid LHe cannot be demonstrated in a lecture room. Because these demos would require way too fancy setup.
Truly awesome. Thank you so much!
I wonder if they had any trouble with their iPhones shutting down (due to Helium diffusion into their MEMS oscillator). I don't know if this was still a problem in 2020... Definitely higher chance in 2020 than in the excellent Alfred Leitner's film about superfluid Helium (1963 :-) )
They didn't submerge their phones in liquid helium. I doubt the concentration of helium gas rise above 1% in the lecture room. In which case it is like worrying that 50-60% humidity at room temperature hurts a cellphone.
@@samtux762 Look it up, it is interesting.
What fascinates me as much as the experiment itself are the methods used to achieve such a state. After the explanation at the beginning, while still no small feat, it was surprisingly simple. Basically layers of transparent insulators mixed with pressure reduction, when all is said and done. (Read More).
I'm fascinated that one can literally achieve a temperature close to 0 K with a device smaller than a barrel while standing a few feet away at room temperature.
Imagine how much easier crop irrigation would be if water acted like a super fluid😂
I wonder if they are working on a way to use this to do some work, I mean we use heat to generate motion can you use extreme cold to create motion?
We use liquid helium to remove noise in telescopes like JWST telescope. Such an instrument wouldn't function withough liquid helium. This holds for the majority of IR telescopes.
Likewise NMR and MRI require LHe.
But LHe costs too much, making it impractical for moving stuff.
#1
That is a dangerous demonstration, well done!
The main danger is to break the helium tank. This amount of LHe in their Dewar flask costs between a new car and a nice house. Otherwise it is all safe ("in the hands of those skilled in art" , as patents say).
In my travels, I keep seeing references to the density of superfluid He-4.
It seems it decreases so my question is does this mean its volume increases or its mass disappears?
Volume increases. Mass dissapears only if you move it elsewhere (evaporation).
Mass can turn to energy under extreme conditions (like a nuke blowing up), but even then you only convert less than 1% of mass to energy.
Is it possible to dissolve dyes, like fluorescein, in liquid and/or superfluid helium? If fluorescein only dissolves in liquid helium, what happens when it goes superfluid?
I bet it will rapidly settle out, if it was already dissolved. No Brownian motion to keep it mixed.
You cannot dissolve dyes in liquid N2, which is a much better solvent. Solvent should provide some insentive (like hydrogen bonds, Van der Waals forces etc) to promote solubility. LHe provides none. Enthropy stimulus can be ignored at this temperature. I doubt you can dissolve anything besides Ne or H2 in meaningful quantities.
Hurry so we can prove dark matter is a super fluid with very unique properties! jk jk
Check out that drip!😎
Hi, I was wondering if I can get the names of the apparatus u are using and the main technology for superfluids, someone can answer please, ty!! :)
(1) Apparatus
Do you mean the Dewar flask that they used to transport liquified gasses? Or the Schoot filter used for the fontain? Or a vacuum pump?
(2) For these experiments you would need liquified gasses. You can get liquid nitrogen:
m.ruclips.net/video/dCXkaQa53QQ/видео.html
But liquid helium - you can only get it in a lab. Onle 1-2 labs per decent university work with it. Your best bet is to have a friend in an NMR lab (which is more difficult than getting platinum.
Ehm!? Liquid nitrogen, or liquid natrium!? :D And how you even managed to shorten it to "Na" as there isn't single letter 'a' on nitrogen!? :D
It was N2. The fancy 2 looks like an a.
720p ? 😭
And you find this phenomenal Why ? I don't see anything phenomenal except maybe your hyperexcitement !
Thats thing has ability to surrounding your body,thats means u can die like sink to deep pool ediot
@@yzyz7779 you know what ?--I call joe mama
@@edwardmacnab354 haha 👍
Watched at 1.5 speed
Didnt watch at 1.5 speed, just watched parts with helium being shown
ok ma non urlare
ruined by a mask.
cool vid, though.