display and lock
21Sean Lock — Infobox Comedian name = Sean Lock imagesize = caption = pseudonym = birth name = birth date = birth date and age|1963|4|22|df=y birth place = Woking, Surrey, England death date = death place = medium = nationality = active = genre = subject =… …
22Missile lock-on — For other uses, see Lock On (disambiguation). Missile lock on refers to a scenario where the guidance system for a missile (or its associated launch vehicle) can accurately track a target, and a fire control system can calculate the required… …
23Wabash and Erie Canal — The Wabash and Erie Canal was a shipping canal that linked the Great Lakes to the Ohio River via a man made waterway. The canal provided traders with access from the Great Lakes all the way to the Gulf of Mexico.The canal known as the Wabash Erie …
24Child safety lock — A child safety lock is a special purpose lock for cabinets, drawers, bottles, etc. that is designed to help prevent children from getting at any dangerous contents. Young children are naturally curious about their surroundings and will always… …
25Hildebrand Lock and Dam — Infobox Dam dam name= Hildebrand Lock and Dam caption= official name= crosses= reservoir= locale= Hilderbrand, West Virginia maint= U.S. Army Corps of Engineers, Pittsburgh District length= height= width= began= 1950 open= 1960 closed= cost=… …
26Computers and Information Systems — ▪ 2009 Introduction Smartphone: The New Computer. The market for the smartphone in reality a handheld computer for Web browsing, e mail, music, and video that was integrated with a cellular telephone continued to grow in 2008. According to… …
27Cannelton Locks and Dam — Infobox Dam dam name=Cannelton Locks and Dam caption= official name= crosses=Ohio River reservoir= locale= maint=United States Army Corps of Engineers Louisville District length=1,827 ft (556.9 m) height= width= began=July 1963 open=December 1966 …
28Stolen and missing moon rocks — Of the 270 Apollo 11 Moon Rocks and Apollo 17 Goodwill Moon Rocks that were given to the nations of the world by the Nixon Administration approximately 180 are currently unaccounted for. Many of the moon rocks that are accounted for have been… …
29Sega Lock-On — Originally known at VR SHOOTER , the Sega Lock On was a little known laser tag game developed by Sega and originally released in 1992. There were three versions of this system made, unofficially called Mark I, Mark II and Voice Command Lock On.… …
30History of Indian science and technology — [ thumb|200px|right|Hand propelled wheel cart, Indus Valley Civilization (3000–1500 BCE). Housed at the National Museum, New Delhi.] [ thumb|right|200px|The Pundit (explorer) and Indian cartographer Nain Singh Rawat (19th century CE) received a… …
