Hydrogen technologies — are technologies that relate to the production and use of hydrogen. Hydrogen technologies are applicable for many uses.Some hydrogen technologies are carbon neutral and could have a role in preventing climate change and a possible future hydrogen … Wikipedia
Hydrogen chloride — HCl redirects here. For the acid, see Hydrochloric acid. Hydrogen chloride … Wikipedia
Valve — This article is about the flow control device. For the game developer, see Valve Corporation. For the electronic component, see Vacuum tube. For other uses, see Valve (disambiguation). These water valves are operated by handles. A valve is a… … Wikipedia
Ball valve — A ball valve (like the butterfly valve and plug valve are one of the family of valves called quarter turn valves ) is a valve that opens by turning a handle attached to a ball inside the valve. The ball has a hole, or port, through the middle so… … Wikipedia
Timeline of hydrogen technologies — A timeline of the history of hydrogen technology.Timeline1600s* 1625 First description of hydrogen by Johann Baptista van Helmont. First to use the word gas . * 1650 Turquet de Mayerne obtained by the action of dilute sulphuric acid on iron a gas … Wikipedia
Liquid hydrogen tank car — A liquid hydrogen tank car is a piece of railroad rolling stock designed to carry cryogenic liquid hydrogen (LH2). In the United Kingdom and countries that follow their railway practices they are generally called liquid hydrogen tank wagons or… … Wikipedia
English Electric Valve Company — English Electric Valve Company, currently known as E2V, is an English electronics company.The company was founded in Chelmsford, Essex in 1947 under Serge Eisenstein. [http://www.firedirect.net/Profiles/0802 e2v/0802 001.htm Fire Direct company… … Wikipedia
Osoaviakhim-1 — Crash site Accident summary Date January 30, 1934 … Wikipedia
Apollo 8 — Infobox Space mission mission name = Apollo 8 insignia = Apollo 8 patch.png command module = CM 103 mass 28,817 kg service module = SM 103 lunar module = Lunar Test Article (LTA B) mass 9,026 kg booster = Saturn V SA 503 crew size = 3 launch pad … Wikipedia
List of spacewalks and moonwalks — This list contains all spacewalks and moonwalks where an astronaut has fully, or partially left his spacecraft. All spacewalks have had the astronauts tethered to their spacecraft except for seven spacewalks by the United States, (six in 1984… … Wikipedia
