Old video showing superfluid helium

Thread starter bcrowell
Start date Feb 7, 2016
Tags

Helium Superfluid Video

In summary, superfluid helium is a state of matter that occurs when helium is cooled to extremely low temperatures, near absolute zero. In this state, helium loses all viscosity and can flow without any resistance. The old video showing superfluid helium was one of the first pieces of evidence that confirmed the existence of superfluidity in helium, helping scientists understand its unique properties and opening up new avenues for research. Superfluid helium, also known as helium II, is different from regular helium (helium I) as it can only exist at temperatures below -268.9 degrees Celsius and has unique properties such as zero viscosity and the ability to flow through extremely small spaces without resistance. It has many applications in science and technology, such as in cryogen

Feb 7, 2016

bcrowell

Staff Emeritus

Science Advisor

Insights Author

Gold Member

I thought this was pretty cool:

www.youtube.com/watch?v=sKOlfR5OcB4

You can skip about the first 2 minutes, which are just the credits and some footage of them transferring some fluid.

Nice concrete demonstration of various fun stuff such as superfluidity and second sound.

Physics news on Phys.org

Feb 7, 2016

Sirsh

Great demonstration, wish they had this quality of explanations still (or maybe I haven't found them yet).

FAQ: Old video showing superfluid helium

What is superfluid helium?

Superfluid helium is a state of matter that occurs when helium is cooled to extremely low temperatures, near absolute zero. In this state, helium loses all viscosity and can flow without any resistance.

What is the significance of the old video showing superfluid helium?

The old video showing superfluid helium was one of the first pieces of evidence that confirmed the existence of superfluidity in helium. It helped scientists understand the unique properties of this state of matter and opened up new avenues for research.

How is superfluid helium different from regular helium?

Regular helium, also known as helium I, is the most common state of helium at room temperature. It has a boiling point of -268.9 degrees Celsius. On the other hand, superfluid helium, also known as helium II, can only exist at temperatures below -268.9 degrees Celsius and has unique properties such as zero viscosity and the ability to flow through extremely small spaces without resistance.

What applications does superfluid helium have?

Superfluid helium has many applications in science and technology. It is used in cryogenics to achieve extremely low temperatures for experiments and in cooling systems for superconductors. It is also used in the study of quantum mechanics and in the production of precision instruments such as gyroscopes.

How is superfluid helium produced?

Superfluid helium is produced by cooling regular helium to extremely low temperatures using techniques such as adiabatic demagnetization and dilution refrigeration. These methods involve reducing the thermal energy of helium atoms, causing them to enter the superfluid state.