wrought alloys
51Duralumin — Fire damaged Duralumin cross brace from the frame of the Zeppelin airship Hindenburg (DLZ129) salvaged from the crash site at Lakehurst Naval Air Station, NJ, on May 6, 1937 Duralumin (also called duraluminum, duraluminium or dural) is the trade… …
52Compounds of carbon — Scientists once thought that organic compounds are or could only be created by living organisms. Over time, human have learned how to synthesize organic compounds. There is an immense number of distinct compounds that contain carbon atoms. Some… …
53Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
54Victoria and Albert Museum — Coordinates: 51°29′48″N 0°10′19″W / 51.496667°N 0.171944°W / 51.496667; 0.171944 …
55Corrugated galvanised iron — roofing in Mount Lawley, Western Australia …
56Case hardening — or surface hardening is the process of hardening the surface of a metal, often a low carbon steel, by infusing elements into the material s surface, forming a thin layer of a harder alloy. Case hardening is usually done after the part in question …
57Filigree — For the concrete system, see Filigree concrete. sterling Horse and Buggy, Filigree work …
58Compound armour — was a type of armour used on warships in the 1880s. By the end of the decade it had been rendered obsolete by nickel steel armour. Prior armours Prior to the 1880s, all naval armour plating was made from uniform homogeneous wrought iron plates on …
59bronze — bronzy, bronzelike, adj. /bronz/, n., v., bronzed, bronzing, adj. n. 1. Metall. a. any of various alloys consisting essentially of copper and tin, the tin content not exceeding 11 percent. b. any of various other alloys having a large copper… …
60Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
