History of radar for various purposes; on the Shuttle Radar Topography Mission, the entire planet was mapped at a 30-m resolution. The Jodrell Bank Observatory, an operation of the University of Manchester in Britain, was originally started by Bernard Lovell to be a radar astronomy facility. It initially used a war-surplus GL-II radar system operating at 71 MHz (4.2 m). The first observations were of ionized trails in the Geminids meteor shower during December 1945. While the facility soon evolved to become the third largest radio observatory in the world, some radar astronomy continued. The largest (250-ft or 76-m in diameter) of their
December 7th: The Movie December 7th: The Movie December 7th: The Movie is a 1943 propaganda film produced by the US Navy and directed by John Ford and Gregg Toland, about the December 7, 1941 attack on Pearl Harbor, the event which sparked the Pacific War and American involvement in World War II. The film begins with a chronological breakdown of the events of December 7, starting with the town of Honolulu gradually waking up and coming to life in the morning. A young private is credited with intercepting some vital information which his superiors dismiss; other sailors play baseball or attend religious services