field phasing
51Betacam — The early form of Betacam videocassette tapes are interchangeable with Betamax, though the recordings are not Media type …
52Mobile operating system — A mobile operating system, also known as a mobile OS, mobile software platform or a handheld operating system, is the operating system that controls a mobile device or information appliance similar in principle to an operating system such as… …
53Christopher Columbus High School (Miami) — Christopher Columbus High School Address 3000 SW Galloway Road (87th Avenue) Westchester, Miami, Florida, (Miami Dade), 33165 3293 United States of America …
5440th Air Expeditionary Wing — Infobox Military Unit unit name=40th Air Expeditionary Wing caption= 40th Air Expeditionary Wing emblem dates= 22 November 1940 Present country= United States allegiance= branch= United States Air Force type= role= size= command structure=… …
55454th Bombardment Wing — Infobox Military Unit unit name= 454th Bombardment wing caption= 454th Bombardment Wng Insignia dates= 1943 1945, 1962 1969 country= United States allegiance= branch= United States Air Force type= role= Bomber size= command structure= Strategic… …
56Military Affairs — ▪ 2009 Introduction Russia and Georgia fought a short, intense war in 2008, fueling global fears of a new Cold War. On August 7 Georgia launched an aerial bombardment and ground attacks against its breakaway province of South Ossetia.… …
57Area 51 — This article is about the U.S. Air Force installation in Nevada. For other uses, see Area 51 (disambiguation). Area 51 …
58Orbit — This article is about orbits in celestial mechanics, due to gravity. For other uses, see Orbit (disambiguation). A satellite orbiting the Earth has a tangential velocity and an inward acceleration …
59Tide — This article is about tides in the Earth s oceans. For other uses, see Tide (disambiguation). Tidal redirects here. For other uses, see Tidal (disambiguation). High Tide redirects here. For other uses, see High Tide (disambiguation) …
60Space Shuttle Columbia disaster — For further information about Columbia s mission and crew, see STS 107. STS 107 mission patch The Space Shuttle Columbia disaster occurred on February 1, 2003, when shortly before it was scheduled to conclude its 28th mission, STS 107, the Space… …
