Liquid Helium II the superfluid (part 2 The transition to the superfluid state)

A 1963 film by Alfred Leitner demonstrating the remarkable properties of liquid helium when cooled below the lambda point (the superfluid state). Its thermal conductivity goes up by a factor of over 1 million and it conducts heat better than any metal.

Category:

Science & Technology

Tags:

• Superfluid
• helium
• entropy
• viscosity
• Leitner
• Physics
• statistical
• mechanics

[cloudinfinity]

Is superfluid helium still very light in weight?

[Zantorc]

@cloudinfinity There is no change of mass and the change of density on transition below the lambda point is negligible.

[pfelon]

Fascinating stuff.

[aeriformeidolon]

The sound of that pump reminds me of my Grandmas Sybian going off in the other room.

[eo3676]

I have worked with modern vacuum pumps, and seeing the pump they are using made me chortle :-)

[kiajun]

6:08 if you just wana see the transition

[brian12934]

6:06 WTF its like the element "breaks its function" for a while there. Makes me think we live in a computer.

Bose-Einstein Condensates are based on the same principle except they are freezing instead and it like deactivates the rules that they are supposed to govern...

They stop functioning and become a single atom, collapsing into each other... I don't think this happens anywhere in the Universe...perhaps it is unused areas of the universe infinity, heat activates it, to save memory.