circular casing
71Asbestos — For other uses, see Asbestos (disambiguation). Fibrous asbestos on muscovite …
72Ant — For other uses, see Ant (disambiguation). Ants Temporal range: 130–0 Ma …
73Commodore 64 — Type Home computer Release date August 1982[1] Discontinued …
74Door — For other uses, see Door (disambiguation). A door is a movable structure used to open and close off an entrance, typically consisting of a panel that swings on hinges or that slides or rotates inside of a space. When open, they admit ventilation… …
75Donald Campbell — For other people named Donald Campbell, see Donald Campbell (disambiguation). Donald Campbell CBE Born Donald Malcolm Campbell 23 March 1921(1921 03 23) Kingston upon Thames, Surrey, England …
76Land mine — For other uses, see Land mine (disambiguation). Minefield redirects here. For other uses, see Minefield (disambiguation). Examples of anti personnel mines. From left to right: an M14, Valmara 69 (a bounding mine), and VS 50 …
77Manhattan Project — This article is about the atomic bomb project. For other uses, see Manhattan Project (disambiguation). Manhattan District The Manhattan Project created the first nuclear bombs. The Trinity test …
78Pipe — may refer to: * Pipe (material), a hollow cylinder following certain dimension rules ** Pipe for transporting water (Water pipe), chemical, gas and casing pipe for cables * Pipe (smoking) * Pipe (character) or vertical bar, the ASCII character |… …
79Wankel engine — The Wankel engine is a type of internal combustion engine which uses a rotary design to convert pressure into a rotating motion instead of using reciprocating pistons. Its four stroke cycle is generally generated in a space between the inside of… …
80Optical disc — Optical media redirects here. For transmission media for light, see Medium (optics). The optical lens of a compact disc drive. In computing and optical disc recording technologies, an optical disc is a flat, usually circular disc which encodes… …
