superfluid helium

Superfluid helium is a unique state of liquid helium that occurs at extremely low temperatures. In this state, helium flows without any resistance, meaning it can move endlessly and effortlessly through tiny pores or around obstacles—kind of like a perfect, frictionless fluid. This happens because the atoms act in unison at a quantum level, losing their individual identities. Superfluid helium exhibits remarkable behaviors like climbing walls and creating persistent currents. It provides valuable insights into quantum physics and has practical uses in scientific instruments and cryogenics.