helium gas

См. также в других словарях:

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

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

• Gas blending — or gas mixing is the filling of diving cylinders with non air breathing gases such as nitrox, trimix and heliox. Hazards There are several hazards with gas mixing: * cylinders are being filled with high pressure gas. If there is any damage or… …   Wikipedia

• helium speech — noun Distorted speech such as occurs in a helium atmosphere • • • Main Entry: ↑helium * * * helium speech, an unnatural, squeaky quality in the voice of undersea explorers or divers due to the higher frequency of sound in the helium gas contained …   Useful english dictionary

• Gas dynamic laser — (GDL) is laser based on differences in relaxation velocities of molecular vibrational states.The laser medium gas has such properties that an energetically lower vibrational state relaxes faster than a higher vibrational state,thus a population… …   Wikipedia

• 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-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

• 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

• Gas tungsten arc welding — TIG welding of a bronze sculpture Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG …   Wikipedia

• Gas cylinder — For the mechanical devices used to impart a force from a pressurized liquid or gas, see pneumatic cylinder. For the large structures used to store town gas, see gas holder. Industrial compressed gas cylinders used for oxy fuel welding and cutting …   Wikipedia