cylinder-shaped cutter
31materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… …
32Hope Diamond — French Blue redirects here. For the color, see French blue (color). Hope Diamond Hope Diamond in the Smithsonian Museum of Natural History Weight 45.52[1][2] …
33German auxiliary cruiser Kormoran — Kormoran redirects here. For other uses, see Kormoran (disambiguation). Auxiliary cruiser Kormoran meets a German U boat at sea Career (Nazi Germany) …
34History of sound recording — Methods and media for sound recording are varied and have undergone significant changes between the first time sound was actually recorded for later playback until now. Technology Mechanical recording The first devices for recording sound were… …
35Submarine — For other uses, see Submarine (disambiguation). A Japan Maritime Self Defense Force Oyashio class submarine in 2006 A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which… …
36File (tool) — A file (or hand file) is a hand tool used to shape material by cutting. A file typically takes the form of a hardened steel bar, mostly covered with a series of sharp, parallel ridges or teeth . Most files have a narrow, pointed tang at one end… …
37Pocket watch — This article is about the portable timepiece. For the Dave Grohl album, see Pocketwatch (album). A gold pocket watch with hunter case and watch chain …
38Door breaching — Reproduction medieval battering ram at Château des Baux, France Door breaching is a process used by military, police, or emergency services to force open closed and/or locked doors. A wide range of methods are available, one or more of which may… …
39Batmobile — For the psychobilly group, see Batmobile (band). For the European Touring Car Championship racing car of the 1970s, see BMW E9. Batmobile An early depiction of the Batmobile. Publication information …
40Bastie glass — Glass Glass (gl[.a]s), n. [OE. glas, gles, AS. gl[ae]s; akin to D., G., Dan., & Sw. glas, Icel. glas, gler, Dan. glar; cf. AS. gl[ae]r amber, L. glaesum. Cf. {Glare}, n., {Glaze}, v. t.] [1913 Webster] 1. A hard, brittle, translucent, and… …
