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Electronics Training Program
The Electronics Training Program (ETP) was the name commonly used for an unusual, difficult, and selective training activity of the United States Navy during World War II. The ETP combined college-level classroom instruction with laboratories involving highly complex electronic systems that were classified secret, resulting in a level of training reported to have been the most intense and difficult ever given to enlisted servicemen. A highly regarded Naval officer noted that the ETP graduates were in the top three to five percent of the Navy's wartime personnel, officers as well as enlisted men. Background As America entered WW II, there was a crisis concerning the availability of men qualified to maintain the huge amount of complex electronic equipment being procured for the Navy's ships, aircraft, submarines, and shore stations. The Navy had over 200,000 personnel, but only a few hundred were radio technicians, most having obtained their qualification through self-study and on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage of its active battle fleet alone exceeding the next 13 navies combined, including 11 allies or partner nations of the United States as of 2015. It has the highest combined battle fleet tonnage (4,635,628 tonnes as of 2019) and the world's largest aircraft carrier fleet, with eleven in service, two new carriers under construction, and five other carriers planned. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the United States Navy is the third largest of the United States military service branches in terms of personnel. It has 290 deployable combat vessels and more than 2,623 operational aircraft . The United States Navy traces its origins to the Continental Navy, which was established during the American Revo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Naval Academy
The United States Naval Academy (US Naval Academy, USNA, or Navy) is a federal service academy in Annapolis, Maryland. It was established on 10 October 1845 during the tenure of George Bancroft as Secretary of the Navy. The Naval Academy is the second oldest of the five U.S. service academies and it educates midshipmen for service in the officer corps of the United States Navy and United States Marine Corps. The campus is located on the former grounds of Fort Severn at the confluence of the Severn River and Chesapeake Bay in Anne Arundel County, east of Washington, D.C., and southeast of Baltimore. The entire campus, known colloquially as the Yard, is a National Historic Landmark and home to many historic sites, buildings, and monuments. It replaced Philadelphia Naval Asylum, in Philadelphia, that had served as the first United States Naval Academy from 1838 to 1845, when the Naval Academy formed in Annapolis. Candidates for admission generally must apply directly t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balaban And Katz
Balaban and Katz Theater Corporation, or B&K, was a theatre corporation which owned a chain of motion picture theaters in Chicago and surrounding areas. It was founded by Barney Balaban (later long-time President of Paramount Pictures), his six siblings, and Sam Katz. History Balaban and Katz Theatre corporation started in 1916 in Chicago by A. J. Balaban and his brother-in-law Sam Katz (1892-1961). It held its first meeting as a Delaware corporation on January 21, 1925. It merged with Lubliner and Trinz in July 1925. Famous Players-Lasky Corporation, forerunner of Paramount Pictures, bought a controlling interest in Balaban and Katz Corporation in 1926. It became a part of United Paramount Theatres in 1948 after Paramount was forced to sell off its theaters. The company also held at the Paramount Pictures-Theaters split in 1949: WBKB (TV), WIBK (FM), 25% of WSMB New Orleans, 50% of a company applying for an Atlanta AM license, 10% of another licensee apply for a license in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eddy Test
Eddy Test was the common name for a test given throughout World War II and for several years thereafter, to identifying men with the capability and aptitude for being trained in the enlisted ranks as electronics maintenance technicians in the U.S. Navy and U.S. Marine Corps. The official name was Radio Technician Selection Test (RTST, Nav Pers 16578), but this designation was rarely used. Passing the Eddy Test served as the passport to the Electronics Training Program, possibly the best technical training program then available in the armed services. Background Since 1924, the Radio Materiel School (RMS), located on the campus of the Naval Research Laboratory (NRL) in Washington, D.C., had provided advanced maintenance training for selected men with a rating of electrician's mate or radioman in the U.S. Navy and Coast Guard. Admission required years of experience as an apprentice (then called a "striker") and passing a very difficult examination. The RMS graduated about 100 men pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prototype
A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and Software prototyping, software programming. A prototype is generally used to evaluate a new design to enhance precision by system analysts and users. Prototyping serves to provide specifications for a real, working system rather than a theoretical one. In some design workflow models, creating a prototype (a process sometimes called materialization) is the step between the Formal specification, formalization and the evaluation of an idea. A prototype can also mean a typical example of something such as in the use of the derivation 'prototypical'. This is a useful term in identifying objects, behaviours and concepts which are considered the accepted norm and is analogous with terms such as stereotypes and archetypes. The word ''wikt:prototype, prototype'' derives from the Greek language, Greek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CFB Clinton
Canadian Forces Base Clinton, CFB Clinton for short, was a Canadian Forces Base located near Clinton, Ontario. It initially opened in July 1941 as RAF Station Clinton under the British Commonwealth Air Training Plan as a training unit for radar operators during a period when radar was a top secret device. UK, Canadian, US and other servicemen were trained at Clinton, with practical flights being carried out at nearby RCAF Station Centralia. Clinton remained the primary radar training site for Canadian Forces personnel through the Cold War era, with continued expansions throughout the 1950s and 60s. As part of a centralization effort, CFB Clinton was closed in 1971, with the site abandoned by 1972. A number of buildings remain on the site, including a large "golf ball" radome. History RAF radar training school The station was established in July 1941 by the Royal Air Force (RAF) as RAF Station Clinton under the British Commonwealth Air Training Plan. Radar training school Fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Air Force
The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and the Royal Naval Air Service (RNAS). Following the Allied victory over the Central Powers in 1918, the RAF emerged as the largest air force in the world at the time. Since its formation, the RAF has taken a significant role in British military history. In particular, it played a large part in the Second World War where it fought its most famous campaign, the Battle of Britain. The RAF's mission is to support the objectives of the British Ministry of Defence (MOD), which are to "provide the capabilities needed to ensure the security and defence of the United Kingdom and overseas territories, including against terrorism; to support the Government's foreign policy objectives particularly in promoting international peace and security". The R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William C
William is a male given name of Germanic origin.Hanks, Hardcastle and Hodges, ''Oxford Dictionary of First Names'', Oxford University Press, 2nd edition, , p. 276. It became very popular in the English language after the Norman conquest of England in 1066,All Things William"Meaning & Origin of the Name"/ref> and remained so throughout the Middle Ages and into the modern era. It is sometimes abbreviated "Wm." Shortened familiar versions in English include Will, Wills, Willy, Willie, Bill, and Billy. A common Irish form is Liam. Scottish diminutives include Wull, Willie or Wullie (as in Oor Wullie or the play ''Douglas''). Female forms are Willa, Willemina, Wilma and Wilhelmina. Etymology William is related to the given name ''Wilhelm'' (cf. Proto-Germanic ᚹᛁᛚᛃᚨᚺᛖᛚᛗᚨᛉ, ''*Wiljahelmaz'' > German ''Wilhelm'' and Old Norse ᚢᛁᛚᛋᛅᚼᛅᛚᛘᛅᛋ, ''Vilhjálmr''). By regular sound changes, the native, inherited English form of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attack On Pearl Harbor
The attack on Pearl HarborAlso known as the Battle of Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service upon the United States against the naval base at Pearl Harbor in Honolulu, Territory of Hawaii, just before 8:00a.m. (local time) on Sunday, December 7, 1941. The United States was a neutral country at the time; the attack led to its formal entry into World War II the next day. The Japanese military leadership referred to the attack as the Hawaii Operation and Operation AI, and as Operation Z during its planning. Japan intended the attack as a preventive action. Its aim was to prevent the United States Pacific Fleet from interfering with its planned military actions in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and those of the United States. Over the course of seven hours there were coordinated Japanese attacks on the US-held Philippines, Guam, and Wake Island and on the British Empire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tizard Mission
The Tizard Mission, officially the British Technical and Scientific Mission, was a British delegation that visited the United States during WWII to obtain the industrial resources to exploit the military potential of the research and development (R&D) work completed by the UK up to the beginning of WWII, but that Britain itself could not exploit due to the immediate requirements of war-related production. It received its popular name from the programme's instigator, Henry Tizard. Tizard was a British scientist and chairman of the Aeronautical Research Committee, which had propelled the development of radar. The mission travelled to the US in September 1940 during the Battle of Britain. They intended to convey a number of technical innovations to the US to secure assistance in maintaining the war effort. Objectives The objective of the mission was to cooperate in science and technology with the U.S., which was neutral and, in many quarters, unwilling to become involved in the war. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cavity Magnetron
The cavity magnetron is a high-power vacuum tube used in early radar systems and currently in microwave ovens and linear particle accelerators. It generates microwaves using the interaction of a stream of electrons with a magnetic field while moving past a series of cavity resonators, which are small, open cavities in a metal block. Electrons pass by the cavities and cause microwaves to oscillate within, similar to the functioning of a whistle producing a tone when excited by an air stream blown past its opening. The resonant frequency of the arrangement is determined by the cavities' physical dimensions. Unlike other vacuum tubes, such as a klystron or a traveling-wave tube (TWT), the magnetron cannot function as an amplifier for increasing the intensity of an applied microwave signal; the magnetron serves solely as an oscillator, generating a microwave signal from direct current electricity supplied to the vacuum tube. The use of magnetic fields as a means to control the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiation Laboratory
The Radiation Laboratory, commonly called the Rad Lab, was a microwave and radar research laboratory located at the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts. It was first created in October 1940 and operated until 31 December 1945 when its functions were dispersed to industry, other departments within MIT, and in 1951, the newly formed MIT Lincoln Laboratory. The use of microwaves for various radio and radar uses was highly desired before the war, but existing microwave devices like the klystron were far too low powered to be useful. Alfred Lee Loomis, a millionaire and physicist who headed his own private laboratory, organized the Microwave Committee to consider these devices and look for improvements. In early 1940, Winston Churchill organized what became the Tizard Mission to introduce U.S. researchers to several new technologies the UK had been developing. Among these was the cavity magnetron, a leap forward in the creation of microwaves that made ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
