vertical furnace
41Concrete — This article is about the construction material. For other uses, see Concrete (disambiguation). Outer view of the Roman Pantheon, still the largest unreinforced solid concrete dome.[1] …
42Geothermal heat pump — A geothermal heat pump system is a heating and/or an air conditioning system that uses the Earth s ability to store heat in the ground and water thermal masses. These systems operate based on the stability of underground temperatures: the ground… …
43Chimney — For other uses, see Chimney (disambiguation). Smokestack redirects here. For the 1963 avant garde jazz album, see Smokestack (album). The world s tallest chimney, of GRES 2 in Ekibastuz, Kazakhstan. A chimney is a structure for venting hot flue… …
44McLouth Steel — Corporation Industry Steel Fate Bankruptcy Successor Detroit Steel Company Founded 1934 Defunct 1996 Headquarters Detroit, MI 1934 1981 …
45chimney — chimneyless, adj. chimneylike, adj. /chim nee/, n., pl. chimneys, v., chimneyed, chimneying. n. 1. a structure, usually vertical, containing a passage or flue by which the smoke, gases, etc., of a fire or furnace are carried off and by means of… …
46Passive solar building design — Elements of passive solar design, shown in a direct gain application …
47Medieval technology — Pumhart von Steyr, a 15th century supergun …
48Thermal oxidation — In microfabrication, thermal oxidation is a way to produce a thin layer of oxide (usually silicon dioxide) on the surface of a wafer (semiconductor). The technique forces an oxidizing agent to diffuse into the wafer at high temperature and react… …
50Synthetic diamond — Synthetic diamonds of various colors grown by the high pressure high temperature technique Synthetic diamond is diamond produced in a technological process; as opposed to natural diamond, which is created in geological processes. Synthetic… …
