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superfluid liquid

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  • Liquid helium — Helium exists in liquid form only at very low temperatures. The boiling point and critical point depend on the isotope of the helium; see the table below for values. The density of liquid helium at its boiling point and 1 atm is approximately… …   Wikipedia

  • liquid helium — Helium in liquid form (below 4.22K), which has remarkable qualities, undergoing a striking change at 2.19K (see ↑superfluidity under ↑superfluid) • • • Main Entry: ↑helium …   Useful english dictionary

  • Superfluid — Superfluidity is a phase of matter or description of heat capacity in which unusual effects are observed when liquids, typically of helium 4 or helium 3, overcome friction by surface interaction when at a stage, known as the lambda point for… …   Wikipedia

  • Liquid crystal — Schlieren texture of liquid crystal nematic phase Liquid crystals (LCs) are a state of matter that have properties between those of a conventional liquid and those of a solid crystal.[1] For instance, an LC may flow like a liquid, but its… …   Wikipedia

  • superfluid — noun Date: 1938 an unusual state of matter noted only in liquid helium cooled to near absolute zero and characterized by apparently frictionless flow (as through fine holes) • superfluid adjective • superfluidity noun …   New Collegiate Dictionary

  • superfluid — /ˈsupəfluəd/ (say soohpuhfloohuhd) noun 1. liquid helium at temperatures below about 2K with special reference to its negligible internal friction and very high thermal conductivity. –adjective 2. of or relating to a superfluid. –superfluidity… …  

  • superfluid — 1. noun A substance, such as liquid helium, that exhibits superfluidity. 2. adjective Of, pertaining to, or exhibiting superfluidity …   Wiktionary

  • Fermi liquid — is a generic term for a quantum mechanical liquid of fermions that arises under certain physical conditions when the temperature is sufficiently low. The interaction between the particles of the many body system does not need to be small (see e.g …   Wikipedia

  • Atomic nucleus — A figurative depiction of the helium 4 atom with the electron cloud in shades of gray. In the nucleus, the two protons and two neutrons are depicted in red and blue. This depiction shows the particles as separate, whereas in an actual helium atom …   Wikipedia

  • Quantum gyroscope — A quantum gyroscope is a very sensitive device to measure angular rotation based on quantum mechanical principles. The first of these has been built by Richard Packard and his colleagues at the University of California, Berkeley. The extreme… …   Wikipedia

  • Mieczysław Wolfke — (1883 – 1947) was a Polish physicist. Wolfke is known for his discovery of two types of liquid helium, of which Helium II is still the only known superfluid liquid. He did ground breaking work in holography, an area of optics dealing with the… …   Wikipedia

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