Cryostat
- ID-nummer
- 2001.022.003
- Titel
- Cryostat
- Objektkategori
- Vetenskapliga instrument, material & modeller
- Publik beskrivning
-
This cryostat is a replica of a device used by Pyotr Kapitsa around 1940 to study superfluid helium. A glass “spindle”with six capillaries is balanced on a needle in a container with liquid helium. If a ray of light is focused on the device so that the liquid is heated, the spindle begins to rotate. The explanation is that at temperatures below 2.19 Kelvin, liquid helium is a mixture of normal liquid helium and a suprafluid helium. When heated, the superfluid quantum liquid is transformed into normal liquid and squirts out through the capillaries. Because the superfluid liquid can seep in along the walls of the capillaries, this process goes on for as long as heat is added.
The cryostat was manufactured at the Moscow Institute of Physics and Technology, which Pyotr Kapitsa helped to found. It was acquired by the Nobel Prize Museum in 2001. - Pristagare
- Pyotr Kapitsa
- Mått
- Circumference: 76 cm
- Provenance
- 201 Nobel Museum Temporary
Part of Cryostat