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solid helium

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  • Helium — otherusesHelium (He) is a colorless, odorless, tasteless, non toxic, inert monatomic chemical element that heads the noble gas group in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the… …   Wikipedia

  • Helium atom scattering — (HAS) is a surface analysis technique used in materials science. HAS provides information about the surface structure and lattice dynamics of a material by measuring the diffracted atoms from a monochromatic helium beam incident on the sample.… …   Wikipedia

  • Helium — Hélium Traduction à relire Helium → …   Wikipédia en Français

  • Hélium 4 — Hélium Traduction à relire Helium → …   Wikipédia en Français

  • Helium-3 — This article is about the elemental isotope. For the record label Helium 3, see Muse or A E Records .infobox isotope background = #F99 isotope name = Helium 3 alternate names =Helium 3,He 3 symbol =He mass number =3 mass =3.016 num neutrons =1… …   Wikipedia

  • Helium — (He) is the element of the 8th group of the Mendeleev’s periodic table. It is classified as an inert gas; atomic number – 2; atomic weight – 4.0026. Natural helium consists of 3He and 4He stable isotopes. It was discovered in 1868 by the French… …   Glossary of Oil and Gas

  • Hélium — Pour les articles homonymes, voir Helium (homonymie). Hélium Hydrogène ← Hélium → …   Wikipédia en Français

  • helium — /hee lee euhm/, n. an inert, gaseous element present in the sun s atmosphere and in natural gas, and also occurring as a radioactive decomposition product, used as a substitute for flammable gases in dirigible balloons. Symbol: He; at. wt.:… …   Universalium

  • 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

  • Helium-neon laser — A helium neon laser, usually called a HeNe laser, is a type of small gas laser. HeNe lasers have many industrial and scientific uses, and are often used in laboratory demonstrations of optics. Its usual operation wavelength is 632.8 nm, in the… …   Wikipedia

  • Quantum solid — In physics, a quantum solid is a type of solid that is intrinsically restless , in the sense that atoms continuously vibrate about their position and exchange places even at the absolute zero of temperature. The archetypal quantum solid is low… …   Wikipedia

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