Much more about Superfluids..
Spectroscopy of helium molecules
A form of super fluid helium-4 has been used as a quantum solvent in spectroscopic techniques. This was performed with Super fluid Helium Droplet Spectroscopy or SHeDS and can be used as a “gas” phase fluid at a single molecule size. The molecule’s rotational freedom is of high interest due to this unique fact about its nature.
Super fluids are used in devices like gyroscopes, which need to have high precision in theoretically predicted gravitational effects to perfect the technology. Gravity Probe B was a project conceived in 1959 that has used options such as super fluid helium to determine the space-time curvature near earth.
Super fluids have also been used to trap and significantly reduce the speed of the light. For example, light was passed through a Bose-Einstein condensed super fluid sodium gas and slowed to 17 meters per second. Light ordinarily travels at 299,792,458 meters per second in a vacuum. This amazing spectacle that Lene Hau performed in 1999 caused the speed of light to be reduced by 299,792,441 meters per second, by trapping it in the super fluid sodium.
Super fluids are used in devices like gyroscopes, which need to have high precision in theoretically predicted gravitational effects to perfect the technology. Gravity Probe B was a project conceived in 1959 that has used options such as super fluid helium to determine the space-time curvature near earth.
Super fluids have also been used to trap and significantly reduce the speed of the light. For example, light was passed through a Bose-Einstein condensed super fluid sodium gas and slowed to 17 meters per second. Light ordinarily travels at 299,792,458 meters per second in a vacuum. This amazing spectacle that Lene Hau performed in 1999 caused the speed of light to be reduced by 299,792,441 meters per second, by trapping it in the super fluid sodium.