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Superfluid Fountain

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High speed video of the fountain effect in superfluid helium-4. The fountain is produced due to two properties of superfluid, the ability to flow through very small pores and the ability to flow due to temperature gradients (thermomechanical effet). Video was taken in August 2007 in the Taborek/Rutledge research lab at the University of California, Irvine.

Channel: Film & Animation
Uploaded: August 17, 2007 at 12:31 am
Author: ucilowtemp

Length: 02:15
Rating: 4.29
Views: 32174

Tags: cryogenic  fountain  helium  quantum  superfluid  

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Video Comments

Pimpmastahanhduece (October 1, 2008 at 11:44 pm)
nope, its like water in a closed soda bottle, some evaporates until the air is saturated, then it condenses, that dries the air and more water has to evaporate making an endless cycle which in fact a little endothermic.
wjones1012 (September 29, 2008 at 7:44 pm)
Can the spouting be classed as perpetual motion? After all, what would be supplying the energy?
Rsmith19756 (September 26, 2008 at 9:47 pm)
The speed of light is only constant in a vacuum of space, not in matter. Especially in superfluids.
jakemclins (September 25, 2008 at 12:44 am)
I thought the speed of light was constant, which is why special relativity exists?
commonman80 (September 20, 2008 at 7:22 pm)
Actually rentetsu, you nailed it.
Rsmith19756 (September 13, 2008 at 10:36 pm)
oops sorry. It's also deadly because it's very cold. It's also very useful for finding the theories of Zero Point Energy
abram730 (September 9, 2008 at 4:29 pm)
click view all comments and you'll see the comment that I was responding to.
Rsmith19756 (September 6, 2008 at 9:11 pm)
I understand the zero viscosity. But what I can't understand is the fact that it slows down the speed of light down to a very slow speed. Anyway a superfluid is a fluid that can flow at anytime with no resistance to flow/ no viscosity, slow motion and the speed of light down very slow speeds. Now at the same time, it's also a state of matter that is just between a fluid and gas,meaning that there is also a supersolid, whic has a medium viscosity. Am I right? btw, cool video
rentetsu (September 3, 2008 at 4:53 am)
I expect many comments about how wrong I am, but basically superfluids have no viscosity, which means no resistance to flow. This somehow makes the fluid creep up the sides of it's container and drip down the sides. In this case, it's made a fountain. A self propelled and thus infinitely spouting fountain.
neutrino03 (August 29, 2008 at 5:26 am)
Where does the speed of light enter in this? lol

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