Ceiling projector — The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground. It is used in conjunction with an alidade, usually positioned 1000 ft (304.8 m) away and wherever possible set… … Wikipedia
WFTC — For Working Families Tax Credit, see Working tax credit. WFTC / KFTC WFTC: Minneapolis–Saint Paul, Minnesota KFTC: Bemidji, Minnesota Branding My29 WFTC … Wikipedia
History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… … Wikipedia
Defence of the Reich — Part of Campaigns of World War II … Wikipedia
M39 Pantserwagen — Type Armoured car Place of origin Netherlands … Wikipedia
RAF Usworth — was a Royal Air Force station near Sunderland which closed in 1958, becoming Sunderland Airport. The site has since been redeveloped as a factory for Nissan cars following the closure of the airport in 1984. Early History The airfield that… … Wikipedia
Wilde Sau — (German for wild boar ) was the term given by the Luftwaffe, during World War II, to the technique by which British night bombers were mainly engaged by single seat fighter planes. Origins The originator of this procedure was the Luftwaffe… … Wikipedia
electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… … Universalium
Mechanical Beasts — Creator Go Nagai Profile Weapons Varied (rays, missiles, blades, acids, sound waves, drills, swords, axe … Wikipedia
National Front (United Kingdom) — National Front Leader Ian Edward Founded 1967 … Wikipedia
Nation of Islam — Part of a series on the Nation of Islam … Wikipedia