>> ^Psychologic:

Safety glasses are optional when you're pretty sure nothing will go wrong.

Safety glasses are optional when you're pretty sure when it goes off they won't help.

Tags for this video have been changed from 'science liquid nitrogen prank' to 'science, liquid nitrogen, prank' - edited by xxovercastxx

This looks like an awesome gift for a kid with a dewer of liquid nitrogen.

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>> ^Fletch:

He was never the same after that. Just swam in circles and watched the world go by.


This comment needs more votes.

Ya, but you should see the liquid nitrogen...

Thanks for the quality!

In reply to this comment by Boise_Lib:
*quality

Your video, Goldfish frozen in liquid nitrogen... and then revived!, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

>> ^Boise_Lib:

>> ^juliovega914:
Alright, this is unbelievably fucking cool.
You guys might (not) remember the Meissner effect I posted earlier (http://videosift.com/video/The-Meissner-Effect-Awsome-physics) This is exactly the same effect.
The fundamental difference is that the superconductor in my vid is thicker than in this case. In this case, a 1 micron YBCO layer is deposited onto a sapphire wafer (probably through physical vapor deposition [http://www.youtube.com/watch?v=_a9Slv1T1UM, go to 3:15 if you want to skip to PVD])
When you deposit a thin film with PVD you will inevitably form small imperfections at the grain boundaries in the film, usually only nanometers wide. When brought down below the superconductive transition temperature (IE, liquid nitrogen temp), the magnetic field lines are able to penetrate these grain boundaries in discrete quantities (unlike the thicker superconductor) forming what they seem to be calling "quantum tubes". The superconductor pins the field lines into these quantum sized tubes, and the force required to distort the field lines is greater than the weight of the superconductor.
Read this for a bit more: http://www.quantumlevitation.com/levitation/The_physics.html, but it doesn't seem terribly well translated, and it cant seem to decide how layman's terms it wants to be.

I didn't think that PVD would form YBCO.
I could easily be wrong though--my knowledge is out of date.
Great video about the Meissner Effect.


Physical vapor deposition (evaporation) pretty much works with any material that can be evaporated in a vaccuum without decomposing. Metals, semi-metals, and many ceramics and metal-oxides are candidates.

>> ^juliovega914:

Alright, this is unbelievably fucking cool.
You guys might (not) remember the Meissner effect I posted earlier (http://videosift.com/video/The-Meissner-Effect-Awsome-physics) This is exactly the same effect.
The fundamental difference is that the superconductor in my vid is thicker than in this case. In this case, a 1 micron YBCO layer is deposited onto a sapphire wafer (probably through physical vapor deposition [http://www.youtube.com/watch?v=_a9Slv1T1UM, go to 3:15 if you want to skip to PVD])
When you deposit a thin film with PVD you will inevitably form small imperfections at the grain boundaries in the film, usually only nanometers wide. When brought down below the superconductive transition temperature (IE, liquid nitrogen temp), the magnetic field lines are able to penetrate these grain boundaries in discrete quantities (unlike the thicker superconductor) forming what they seem to be calling "quantum tubes". The superconductor pins the field lines into these quantum sized tubes, and the force required to distort the field lines is greater than the weight of the superconductor.
Read this for a bit more: http://www.quantumlevitation.com/levitation/The_physics.html, but it doesn't seem terribly well translated, and it cant seem to decide how layman's terms it wants to be.


I didn't think that PVD would form YBCO.
I could easily be wrong though--my knowledge is out of date.

Great video about the Meissner Effect.

Alright, this is unbelievably fucking cool.

You guys might (not) remember the Meissner effect I posted earlier (http://videosift.com/video/The-Meissner-Effect-Awsome-physics) This is exactly the same effect.

The fundamental difference is that the superconductor in my vid is thicker than in this case. In this case, a 1 micron YBCO layer is deposited onto a sapphire wafer (probably through physical vapor deposition [http://www.youtube.com/watch?v=_a9Slv1T1UM, go to 3:15 if you want to skip to PVD])

When you deposit a thin film with PVD you will inevitably form small imperfections at the grain boundaries in the film, usually only nanometers wide. When brought down below the superconductive transition temperature (IE, liquid nitrogen temp), the magnetic field lines are able to penetrate these grain boundaries in discrete quantities (unlike the thicker superconductor) forming what they seem to be calling "quantum tubes". The superconductor pins the field lines into these quantum sized tubes, and the force required to distort the field lines is greater than the weight of the superconductor.

Read this for a bit more: http://www.quantumlevitation.com/levitation/The_physics.html, but it doesn't seem terribly well translated, and it cant seem to decide how layman's terms it wants to be.

Tags for this video have been changed from 'liquid nitrogen, pool, cool, awesome' to 'liquid nitrogen, swimming pool, cool, awesome' - edited by shuac

>> ^hpqp:

>> ^shuac:
I believe god has a chocolaty center. With crushed nuts. And another layer of chocolate on top of the nuts. Then it's dipped in melted vanilla ice cream, flash-frozen in liquid nitrogen, and then covered in a delicate layer of fresh monkey cum. Add a third layer of chocolate on top of that, some nuggat-clusters, caramel and a final layer of thick chocolate. Yummy! That's god to me.

God has revealed itself to me through your gospel: I AM CONVERT!
edit: wait a second... "fresh monkey cum"? You mean lezhog juice, right?
Oh my God, SCHISM!

DIE HERETIC!!!!!!

>> ^shuac:

I believe god has a chocolaty center. With crushed nuts. And another layer of chocolate on top of the nuts. Then it's dipped in melted vanilla ice cream, flash-frozen in liquid nitrogen, and then covered in a delicate layer of fresh monkey cum. Add a third layer of chocolate on top of that, some nuggat-clusters, caramel and a final layer of thick chocolate. Yummy! That's god to me.


God has revealed itself to me through your gospel: I AM CONVERT!

edit: wait a second... "fresh monkey cum"? You mean lezhog juice, right?

Oh my God, SCHISM!

I believe god has a chocolaty center. With crushed nuts. And another layer of chocolate on top of the nuts. Then it's dipped in melted vanilla ice cream, flash-frozen in liquid nitrogen, and then covered in a delicate layer of fresh monkey cum. Add a third layer of chocolate on top of that, some nuggat-clusters, caramel and a final layer of thick chocolate. Yummy! That's god to me.