👉 A superfluid is an exotic state of matter that exhibits zero viscosity, meaning it can flow without any resistance or friction. This phenomenon occurs at extremely low temperatures, typically near absolute zero, where quantum mechanical effects dominate the behavior of particles. In a superfluid, such as liquid helium-4 below 2.17 Kelvin, atoms lose their individual identities and behave collectively as a single quantum entity. This results in unique properties like the ability to flow through incredibly narrow channels, climb walls, and even escape from containers without any apparent resistance. Superfluidity is a fascinating example of quantum mechanics manifesting in macroscopic systems, offering insights into the fundamental nature of matter and energy at the quantum scale.
