Liquid Helium II, Superfluid Segment 3 of 6..

Superflow and the Viscosity Paradox. The Two Fluid Model.

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Education

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• sfh3Superflow

[sintje21]

what i was thinking about was: is the viscosity the one responsible for spinning the wheels, or could there be any other reason of motion of the blades for the helium II experiment?

[ale86itn]

@sintje21 Yes this question has been raised often by others, but we haven't been able to come up with any reasons. The little blades were made out of the wooden matchboxes which were common then, and they were cemented to little wooden sticks.. None of these have electric conductivity. The induction motor wouldn't affect them. - Thanks for your interest.!

[goomba45797]

These are the best physics videos I've ever seen.... I'm glad I found them.

[ale86itn]

Many thanks for your comment!

[mrjustin5]

Wow, this is extremely fascinating. I love Quantum Mechanics (I read Brian Greenes' book The Elegant Universe and Stephen Hawkings: A Breif History of Time). This Paradox of Helium ][ reminds me of Wave-Partical Duality. Both states are true (Wave and Particle) but they completely contradict each other. Very, very fascinating video experiment.

[DackIsBack]

MindF*ck.

[TAkabir]

@ale86itn what if it was not the fluid that was moving, due to the lack of viscosity. Adding a drop of color to the fluid would explain a lot weather the fluid is spinning or the blade itself since viscosity might be absent in the super fluid state. How does gravity or friction behave on matter when in superfluid? what are the possibilities of an electromagnetic effect. Please forgive me if my questions are idiotic. Oh and how would super fluid itself behave in Zero Gravity.

[denvera1g1]

@ale86itn also if the paddle had any bit of electrically conductive properties it would spin with the rotation of the magnetic field because of the magnetic field's pull on the paddle's electrons, rotate a strong magnet inside of an aluminum cylinder and the cylinder will eventually turn as well, if the EM force overcomes friction and inertia of the cylinder

[denvera1g1]

@ale86itn i want to bring up something i saw a year or 2 ago on the science channel, i can't remember the exact methods but from what i do remember they used a superconducting magnet to levitate just about anything from water to glass and everything inbetween including a frog and a turkey sandwitch

[thepcguy01]

what if the normal component was some helium 3 isotopes mixed with

the helium 4?

[thepcguy01]

is liquid helium 2 a bose-einstein condensate?

[keynesh458]

@mrjustin5 yo dude man,i too read those books.i love them like a nerd studying.

[Bboiblack]

I'm just curious how they got it to say in the beaker in the second experiment.

if only it was so cold, it would be awesome(impossible) to try and swim in it.

[pyrea17]

Damn I love physics. Every time we thing we have it figured out it presents us with a new problem. It's like a great book that never ends.

[shmigal]

Thanks a lot for posting these videos!