Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q2665367> ?p ?o }
- Q2665367 subject Q7830562.
- Q2665367 subject Q8716899.
- Q2665367 abstract "Both the Allies and Axis powers used radar in World War II, and many important aspects of this conflict were greatly influenced by this revolutionary new technology.The technology of radio-based detection and tracking evolved independently in a number of nations during the mid 1930s. At the outbreak of war in September 1939, both Great Britain and Germany had functioning systems. In Great Britain it was called RDF, Range and Direction Finding, while in Germany the name Funkmessgerät (radio measuring device) was used.By the time of the Battle of Britain in mid-1940, the Royal Air Force (RAF) had fully integrated RDF as part of the national air defence. By contrast, The German Funkmessgerät, was neglected, partly due to Adolf Hitler's prejudice against defensive measures, and failings by the Luftwaffe in coherently incorporating the new technology.Although the technology was first demonstrated in the United States during December 1934, it was only when war became likely that the U.S. recognized the potential of the new technology, and began development of ship- and land-based systems. The first of these were fielded by the U.S. Navy in early 1940, and a year later by the U.S. Army. The acronym RADAR (for RAdio Detection And Ranging) was coined by the U.S. Navy in 1940, and the term "radar" became widely used.While the benefits of operating in the microwave portion of the radio spectrum were known, transmitters for generating microwave signals of sufficient power were unavailable; thus, all early radar systems operated at lower frequencies (e.g., HF or VHF). In February 1940, Great Britain developed the resonant-cavity magnetron, capable of producing microwave power in the kilowatt range, opening the path to second-generation radar systems.After the Fall of France, it was realised in Great Britain that the manufacturing capabilities of the United States were vital to success in the war; thus, although America was not yet a belligerent, Prime Minister Winston Churchill directed that the technology secrets of Great Britain be shared in exchange for the needed capabilities. In the summer of 1940, the Tizard Mission visited the United States. The cavity magnetron was demonstrated to Americans at RCA, Bell Labs, etc. It was 100 times more powerful than anything they had seen. Bell Labs was able to duplicate the performance, and the Radiation Laboratory at MIT was established to develop microwave radars. It was later described by noted Historian James Phinney Baxter III as "The most valuable cargo ever brought to our shores".In addition to Great Britain, Germany, and the United States, wartime radars were also developed and used by the Soviet Union and Japan, as well as the technically advanced Commonwealth Nations Australia, Canada, New Zealand, and South Africa.".
- Q2665367 thumbnail Bawdsey_Manor_-_geograph.org.uk_-_62110.jpg?width=300.
- Q2665367 wikiPageWikiLink Q100341.
- Q2665367 wikiPageWikiLink Q1004173.
- Q2665367 wikiPageWikiLink Q101244.
- Q2665367 wikiPageWikiLink Q1026673.
- Q2665367 wikiPageWikiLink Q1032176.
- Q2665367 wikiPageWikiLink Q1043963.
- Q2665367 wikiPageWikiLink Q1047422.
- Q2665367 wikiPageWikiLink Q104996.
- Q2665367 wikiPageWikiLink Q1059083.
- Q2665367 wikiPageWikiLink Q1063245.
- Q2665367 wikiPageWikiLink Q1095537.
- Q2665367 wikiPageWikiLink Q1115049.
- Q2665367 wikiPageWikiLink Q1117048.
- Q2665367 wikiPageWikiLink Q11182969.
- Q2665367 wikiPageWikiLink Q11220.
- Q2665367 wikiPageWikiLink Q11233438.
- Q2665367 wikiPageWikiLink Q1126161.
- Q2665367 wikiPageWikiLink Q1126859.
- Q2665367 wikiPageWikiLink Q1129003.
- Q2665367 wikiPageWikiLink Q1131496.
- Q2665367 wikiPageWikiLink Q1132216.
- Q2665367 wikiPageWikiLink Q114.
- Q2665367 wikiPageWikiLink Q11568.
- Q2665367 wikiPageWikiLink Q1198671.
- Q2665367 wikiPageWikiLink Q123637.
- Q2665367 wikiPageWikiLink Q123709.
- Q2665367 wikiPageWikiLink Q1239.
- Q2665367 wikiPageWikiLink Q124274.
- Q2665367 wikiPageWikiLink Q1249005.
- Q2665367 wikiPageWikiLink Q12548.
- Q2665367 wikiPageWikiLink Q1266530.
- Q2665367 wikiPageWikiLink Q127995.
- Q2665367 wikiPageWikiLink Q1282952.
- Q2665367 wikiPageWikiLink Q1303061.
- Q2665367 wikiPageWikiLink Q130796.
- Q2665367 wikiPageWikiLink Q131214.
- Q2665367 wikiPageWikiLink Q131347.
- Q2665367 wikiPageWikiLink Q131566.
- Q2665367 wikiPageWikiLink Q1322976.
- Q2665367 wikiPageWikiLink Q1324545.
- Q2665367 wikiPageWikiLink Q133267.
- Q2665367 wikiPageWikiLink Q1332920.
- Q2665367 wikiPageWikiLink Q13371.
- Q2665367 wikiPageWikiLink Q13405050.
- Q2665367 wikiPageWikiLink Q1347561.
- Q2665367 wikiPageWikiLink Q134949.
- Q2665367 wikiPageWikiLink Q1354789.
- Q2665367 wikiPageWikiLink Q1387973.
- Q2665367 wikiPageWikiLink Q1394.
- Q2665367 wikiPageWikiLink Q142.
- Q2665367 wikiPageWikiLink Q1437507.
- Q2665367 wikiPageWikiLink Q1452019.
- Q2665367 wikiPageWikiLink Q1455960.
- Q2665367 wikiPageWikiLink Q1458695.
- Q2665367 wikiPageWikiLink Q1473588.
- Q2665367 wikiPageWikiLink Q1475132.
- Q2665367 wikiPageWikiLink Q1499258.
- Q2665367 wikiPageWikiLink Q15115271.
- Q2665367 wikiPageWikiLink Q151340.
- Q2665367 wikiPageWikiLink Q151701.
- Q2665367 wikiPageWikiLink Q1517472.
- Q2665367 wikiPageWikiLink Q15180.
- Q2665367 wikiPageWikiLink Q152025.
- Q2665367 wikiPageWikiLink Q152412.
- Q2665367 wikiPageWikiLink Q152466.
- Q2665367 wikiPageWikiLink Q153122.
- Q2665367 wikiPageWikiLink Q153348.
- Q2665367 wikiPageWikiLink Q1536562.
- Q2665367 wikiPageWikiLink Q154429.
- Q2665367 wikiPageWikiLink Q1545088.
- Q2665367 wikiPageWikiLink Q154720.
- Q2665367 wikiPageWikiLink Q155661.
- Q2665367 wikiPageWikiLink Q157332.
- Q2665367 wikiPageWikiLink Q157627.
- Q2665367 wikiPageWikiLink Q16.
- Q2665367 wikiPageWikiLink Q161341.
- Q2665367 wikiPageWikiLink Q161448.
- Q2665367 wikiPageWikiLink Q162219.
- Q2665367 wikiPageWikiLink Q1627144.
- Q2665367 wikiPageWikiLink Q1641747.
- Q2665367 wikiPageWikiLink Q1645453.
- Q2665367 wikiPageWikiLink Q165862.
- Q2665367 wikiPageWikiLink Q165969.
- Q2665367 wikiPageWikiLink Q166.
- Q2665367 wikiPageWikiLink Q16978696.
- Q2665367 wikiPageWikiLink Q17.
- Q2665367 wikiPageWikiLink Q170416.
- Q2665367 wikiPageWikiLink Q1707.
- Q2665367 wikiPageWikiLink Q172579.
- Q2665367 wikiPageWikiLink Q174320.
- Q2665367 wikiPageWikiLink Q174334.
- Q2665367 wikiPageWikiLink Q174728.
- Q2665367 wikiPageWikiLink Q1763.
- Q2665367 wikiPageWikiLink Q176609.
- Q2665367 wikiPageWikiLink Q178344.
- Q2665367 wikiPageWikiLink Q1795238.