soft steel
51Armor-piercing shot and shell — [ thumb|right|250px|Armour piercing shell of the APBC 1 Light weight ballistic cap 2 Steel alloy piercing shell 3 Desensitized bursting charge (TNT, Trinitrophenol, RDX...) 4 Fuse (set with delay to explode inside the target) 5 Bourrelet (front)… …
52bullet — bulletless, adj. bulletlike, adj. /bool it/, n., v., bulleted, bulleting. n. 1. a small metal projectile, part of a cartridge, for firing from small arms. See diag. under cartridge. 2. a cartridge. 3. a small ball. 4. Print. a heavy dot for… …
53Tiger II — For the aircraft also known as the Tiger II, see Northrop F 5. Panzerkampfwagen Tiger Ausf. B …
54siderography — siderographer, n. siderographic /sid euhr euh graf ik/, adj. /sid euh rog reuh fee/, n. 1. the art or technique of engraving on steel. 2. a method of increasing the number of reproductions obtained from a steel engraving by first rolling a soft… …
55O-class battlecruiser — This article is about the planned battlecruiser class. For other O classes, see O class (disambiguation). A Richard Allison painting of the O class battlecruiser concept. Class overview Operators …
56Compound 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 …
57Siderography — Sid er*og ra*phy, n. [Gr. ??? iron + graphy.] The art or practice of steel engraving; especially, the process, invented by Perkins, of multiplying facsimiles of an engraved steel plate by first rolling over it, when hardened, a soft steel… …
58Lupton, Thomas Goff — ▪ British engraver born September 3, 1791, London, England died May 18, 1873, London English mezzotint engraver and miniatures painter who was the first artist to use soft steel plates in the art of engraving. This development permitted a… …
59NASA wind turbines — NASA experimental wind turbines drawn to the same scale Starting in 1975, NASA developed technologies and was the technical manager for the United States Department of Energy and the United States Department of Interior on a program to develop… …
60Japanese carpentry — is distinguished by its advanced joinery and its finely planed wood surfaces. Japanese carpenters use a different set of tools and techniques from European carpenters. They also use different conventions of marking out. ToolsThese are the tools… …
