lifting gas
Look at other dictionaries:
Lifting gas — A lifting gas is required for aerostats to create buoyancy. Its density is lower than that of air (about 1.2 kg/m3, 1.2 g/l). Ammonia Ammonia is sometimes used to fill weather balloons. Due to its relatively high boiling point (compared to helium … Wikipedia
lifting jack — A device for raising heavy objects, particularly motor vehicles, for convenience in accomplishing repair work or servicing upon the vehicle. 24 Am J1st Gas Sta § 23. An elevator in England … Ballentine's law dictionary
Noble gas — Group 18 Period 1 2 He 2 … Wikipedia
noble gas — Chem. any of the chemically inert gaseous elements of group 8A or 0 of the periodic table: helium, neon, argon, krypton, xenon, and radon. Also called inert gas. [1900 05] * * * or inert gas Any of the six chemical elements that make up the… … Universalium
Dry gas seal — Dry gas seals are non contacting, dry running mechanical face seals consist of a mating (rotating) ring and a primary (stationary) ring. When operating, grooves in the rotating ring generate a fluid dynamic force causing the stationary ring to… … Wikipedia
Star lifting — is any of several hypothetical processes by which a highly advanced civilization (at least Kardashev II) could remove a substantial portion of a star s matter in a controlled manner for other uses. The term appears to have been coined by David… … Wikipedia
Coal gas — Towngas redirects here. For the company in Hong Kong trading as Towngas , see The Hong Kong and China Gas Company Limited. See also: Coal gasification and Coal seam gas Coal gas (also town gas and illumination gas) is a flammable gaseous… … Wikipedia
Production, oil and gas — The lifting of oil and gas to the surface and gathering, treating, field processing (as in the case of processing gas to extract liquid hydrocarbons), and field storage. The production function shall normally be regarded as terminating at the… … Energy terms
Airship — For other uses, see Airship (disambiguation). Dirigible redirects here. For the 1931 film, see Dirigible (film). Not to be confused with Balloon (aircraft) or Blimp. Airship … Wikipedia
R101 — infobox Aircraft name = R101 type = Airship manufacturer = Royal Airship Works caption = designer = V.C. Richmond first flight = 4 October 1930Clarifyme|date=June 2008 introduction = retired = status = primary user = more users = produced =… … Wikipedia
