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superfluidity

superfluidity

1 9.8
A state in which a liquid like helium flows without friction at very low temperatures
  • noun
  • /ˌsuːpərˈfluːɪdəti/
  • Specialized
: superfluidez
  • At temperatures close to absolute zero, helium exhibits superfluidity, allowing it to flow without any resistance.
  • superfluidity and superconductivity

Examples

  • Superfluidity in a Fermi gas may reveal itself only through subtle signals.

    Academic text (2003)
  • The transition temperature is close to the predicted onset of superfluidity.

    Academic text (2005)
  • Recently, a number of experimental groups have reported behavior consistent with superfluidity, but they have found no direct evidence.

    Academic text (2005)
  • Each of the three phases exhibits superfluidity, flowing with zero viscosity.

    Academic text (1996)
  • The superfluidity of 4He was explained as a manifestation of Bose-Einstein condensation.

    Academic text (1996)
  • They report seeing vortices, a hallmark of superfluidity, in an ultracold fermionic gas.

    Academic text (2005)
  • Theorists have predicted that the superfluidity of fermionic pairs near the Feshbach resonance should be observable at experimentally accessible temperatures.

    Academic text (2005)
  • Bose-Einstein condensation (BEC) has long been known to be a key element of macroscopic quantum phenomena such as superconductivity and superfluidity.

    Academic text (1999)
  • A Fermi gas superfluid is also interesting because no other system has such a high T_c (the critical temperature below which superfluidity sets in), relative to the Fermi temperature T_F (the temperature corresponding to the Fermi energy).

    Academic text (2005)
  • The discovery of superfluidity in certain liquids reveals fascinating insights into quantum mechanics and fluid dynamics.

Antonyms

viscosity
  • Specialized
8 7.1

How thick and sticky a liquid is so it flows slowly

How Frictionless

superfluidity
  • Specialized
1 9.8
fluidity
1 4.6
viscosity
  • Specialized
8 7.1

Surface Forms

superfluidity singular

Morphology

superfluidity = superfluid (transparent) = super + fluid + ity

The noun 'superfluidity' is transparently derived from the adjective 'superfluid' by adding the suffix '-ity'.

Etymology

Superfluidity breaks into super- meaning 'above' or 'more than', as in superhero, fluid meaning 'liquid' or 'flow', and -ity that makes a 'state'. So superfluidity is the 'state' of a liquid that behaves 'above' normal liquids by flowing with 'no friction'.