Onager (siege weapon) — This article is about the siege weapon. For the horse species, see Onager. Sketch of an Onager, from Antique technology by Diels … Wikipedia
Space elevator — A space elevator for Earth would consist of a cable anchored to the Earth s equator, reaching into space. By attaching a counterweight at the end (or by further extending the cable upward for the same purpose), the center of mass is kept well… … Wikipedia
Switchblade — A switchblade (also known as automatic knife, switch, or in British English flick knife) is a type of knife with a folding or sliding blade contained in the handle which is opened by a spring when a button or lever on the grip is… … Wikipedia
Abdul Qadeer Khan — HI, NI (twice) Abdul Qadeer Khan, 1999. Born 1 April … Wikipedia
Enriched uranium — Proportions of uranium 238 (blue) and uranium 235 (red) found naturally versus enriched grades Enriched uranium is a kind of uranium in which the percent composition of uranium 235 has been increased through the process of isotope separation.… … Wikipedia
Yo-yo — The yo yo is a toy consisting of two equally sized and weighted disks of plastic, wood, or metal, connected with an axle, with a string tied around it. First becoming popular in the 1920s, yo yoing is still enjoyed by children and adults alike.… … Wikipedia
Timeline of Russian inventions and technology records — The Hall of Space Technology in the Tsiolkovsky State Museum of the History of Cosmonautics, Kaluga, Russia. The exhibition includes the models and replicas of the following Russian inventions: the first satellite, Sputnik 1 (a ball under the… … Wikipedia
Artillery — For other uses of the term, see Artillery (disambiguation). Warfare Military history Eras Prehistoric Ancient … Wikipedia
Centrifuge — This article is about the scientific device. For the Christian camp, see Centrifuge (camps). For spin direction in quantum mechanics, see Spin (physics)#Spin direction. A laboratory tabletop centrifuge. A centrifuge is a piece of equipment,… … Wikipedia
military aircraft — Introduction any type of aircraft that has been adapted for military use. Aircraft have been a fundamental part of military power since the mid 20th century. Generally speaking, all military aircraft fall into one of the following… … Universalium