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H. J. Round
Captain Henry Joseph Round (2 June 1881 – 17 August 1966) was an English engineer and one of the early pioneers of radio. He was the first to report observation of electroluminescence from a solid state diode, leading to the discovery of the light-emitting diode. He was a personal assistant to Guglielmo Marconi. Round was the eldest child of Joseph and Gertrude Round. He spent his early years in the small town of Kingswinford in Staffordshire and received his early education at Cheltenham Grammar School. He later attended the Royal College of Science, a constituent college of Imperial College London where he gained a first class honours degree. Round joined the Marconi Company in 1902; not long after Marconi had made his transatlantic wireless transmission. He was sent to the USA where he experimented with a variety of different aspects of radio technology, focusing on technologies such as powdered iron cored tuning inductors. He also performed some experiments with transmiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingswinford
Kingswinford is a town of the Metropolitan Borough of Dudley in the English West Midlands, situated west-southwest of central Dudley. In 2011 the area had a population of 25,191, down from 25,808 at the 2001 Census. The current economic focus of Kingswinford is education and housing for commuters. Positioned at the far western edge of the West Midlands Urban Area it borders on a rural area extending past the River Severn; but its position at the edge of the Black Country and its long standing in the area means it has had significant industrial influence in the past. This is illustrated by the influence in creating local workhouses, which shows a population of 15,000 plus in the 1831 census. History Historically in Staffordshire, Kingswinford is mentioned in the Domesday Book; its name relates to a ford for the King's swine (Kingswin(e)ford) – Latin Swinford Regis. The ancient parish of Kingswinford spanned Wordsley, Brierley Hill and Quarry Bank. The parishes of Kingswinf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SiC LED Historic
The Latin adverb ''sic'' (; "thus", "just as"; in full: , "thus was it written") inserted after a quoted word or passage indicates that the quoted matter has been transcribed or translated exactly as found in the source text, complete with any erroneous, archaic, or otherwise nonstandard spelling, punctuation, or grammar. It also applies to any surprising assertion, faulty reasoning, or other matter that might be interpreted as an error of transcription. The typical usage is to inform the reader that any errors or apparent errors in quoted material do not arise from errors in the course of the transcription, but are intentionally reproduced, exactly as they appear in the source text. It is generally placed inside square brackets to indicate that it is not part of the quoted matter. ''Sic'' may also be inserted derisively or sarcastically, to call attention to the original writer's spelling mistakes or erroneous logic, or to show general disapproval or dislike of the material. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonar
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances (ranging), communicate with or detect objects on or under the surface of the water, such as other vessels. "Sonar" can refer to one of two types of technology: ''passive'' sonar means listening for the sound made by vessels; ''active'' sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and SODAR (an upward-looking in-air sonar) is used for atmospheric investigations. The term ''sonar'' is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low (infrasonic) to extr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ASDIC
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects on or under the surface of the water, such as other vessels. "Sonar" can refer to one of two types of technology: ''passive'' sonar means listening for the sound made by vessels; ''active'' sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and SODAR (an upward-looking in-air sonar) is used for atmospheric investigations. The term ''sonar'' is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low ( infrasonic) to ext ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second World War
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Cross
The Military Cross (MC) is the third-level (second-level pre-1993) military decoration awarded to officers and (since 1993) other ranks of the British Armed Forces, and formerly awarded to officers of other Commonwealth countries. The MC is granted in recognition of "an act or acts of exemplary gallantry during active operations against the enemy on land" to all members of the British Armed Forces of any rank. In 1979, the Queen approved a proposal that a number of awards, including the Military Cross, could be recommended posthumously. History The award was created on 28 December 1914 for commissioned officers of the substantive rank of captain or below and for warrant officers. The first 98 awards were gazetted on 1 January 1915, to 71 officers, and 27 warrant officers. Although posthumous recommendations for the Military Cross were unavailable until 1979, the first awards included seven posthumous awards, with the word 'deceased' after the name of the recipient, from r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1917 New Year Honours
The 1917 New Year Honours were appointments by King George V to various orders and honours to reward and highlight good works by citizens of the British Empire. The appointments were published in several editions of ''The London Gazette'' in January and February. The 1 January list contained only military honours earned during the ongoing war, particularly for the Battle of the Somme, while political honours were delayed. The announcement was celebrated by ''The Times'' in its New Year's Day reporting: "It is a welcome change to publish a list of New Year's Honours which have been earned altogether in the honourable service of the State. What are sometimes called 'political honours' – the results too often of personal and party manoeuvres – seem indescribably repellent in these days of national strain. We cannot, unfortunately, congratulate ourselves that their omission to-day is anything more than a postponement; but for the moment at all events we have a list confined en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Jutland
The Battle of Jutland (german: Skagerrakschlacht, the Battle of the Skagerrak) was a naval battle fought between Britain's Royal Navy Grand Fleet, under Admiral Sir John Jellicoe, and the Imperial German Navy's High Seas Fleet, under Vice-Admiral Reinhard Scheer, during the First World War. The battle unfolded in extensive manoeuvring and three main engagements (the battlecruiser action, the fleet action and the night action), from 31 May to 1 June 1916, off the North Sea coast of Denmark's Jutland Peninsula. It was the largest naval battle and the only full-scale clash of battleships in that war. Jutland was the third fleet action between steel battleships, following the Battle of the Yellow Sea in 1904 and the Battle of Tsushima in 1905, during the Russo-Japanese War. Jutland was the last major battle in history fought primarily by battleships. Germany's High Seas Fleet intended to lure out, trap, and destroy a portion of the British Grand Fleet, as the German nav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Admiralty
The Admiralty was a department of the Government of the United Kingdom responsible for the command of the Royal Navy until 1964, historically under its titular head, the Lord High Admiral – one of the Great Officers of State. For much of its history, from the early 18th century until its abolition, the role of the Lord High Admiral was almost invariably put "in commission" and exercised by the Lords Commissioner of the Admiralty, who sat on the governing Board of Admiralty, rather than by a single person. The Admiralty was replaced by the Admiralty Board in 1964, as part of the reforms that created the Ministry of Defence and its Navy Department (later Navy Command). Before the Acts of Union 1707, the Office of the Admiralty and Marine Affairs administered the Royal Navy of the Kingdom of England, which merged with the Royal Scots Navy and the absorbed the responsibilities of the Lord High Admiral of the Kingdom of Scotland with the unification of the Kingdom of Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilhelmshaven
Wilhelmshaven (, ''Wilhelm's Harbour''; Northern Low Saxon: ''Willemshaven'') is a coastal town in Lower Saxony, Germany. It is situated on the western side of the Jade Bight, a bay of the North Sea, and has a population of 76,089. Wilhelmshaven is the centre of the "Jade Bay" business region (which has around 330,000 inhabitants) and is Germany's main military port. The adjacent Lower Saxony Wadden Sea National Park (part of the Wattenmeer UNESCO World Natural Heritage Site) provides the basis for the major tourism industry in the region. History The , built before 1383, operated as a pirate stronghold; the Hanseatic League destroyed it in 1433. Four centuries later, the Kingdom of Prussia planned a fleet and a harbour on the North Sea. In 1853, Prince Adalbert of Prussia, a cousin of the Prussian King Frederick William IV, arranged the Jade Treaty (''Jade-Vertrag'') with the Grand Duchy of Oldenburg, in which Prussia and the Grand Duchy entered into a contract whereby Old ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Front (World War I)
The Western Front was one of the main theatres of war during the First World War. Following the outbreak of war in August 1914, the German Army opened the Western Front by invading Luxembourg and Belgium, then gaining military control of important industrial regions in France. The German advance was halted with the Battle of the Marne. Following the Race to the Sea, both sides dug in along a meandering line of fortified trenches, stretching from the North Sea to the Swiss frontier with France, which changed little except during early 1917 and in 1918. Between 1915 and 1917 there were several offensives along this front. The attacks employed massive artillery bombardments and massed infantry advances. Entrenchments, machine gun emplacements, barbed wire and artillery repeatedly inflicted severe casualties during attacks and counter-attacks and no significant advances were made. Among the most costly of these offensives were the Battle of Verdun, in 1916, with a combined 700 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intelligence Corps (United Kingdom)
The Intelligence Corps (Int Corps) is a corps of the British Army. It is responsible for gathering, analysing and disseminating military intelligence and also for counter-intelligence and security. The Director of the Intelligence Corps is a brigadier. History 1814–1914 In the 19th century, British intelligence work was undertaken by the Intelligence Department of the War Office. An important figure was Sir Charles Wilson, a Royal Engineer who successfully pushed for reform of the War Office's treatment of topographical work. In the early 1900s intelligence gathering was becoming better understood, to the point where a counter-intelligence organisation ( MI5) was formed by the Directorate of Military Intelligence (DoMI) under Captain (later Major-General) Vernon Kell; overseas intelligence gathering began in 1912 by MI6 under Commander (later Captain) Mansfield Smith-Cumming. 1914–1929 Although the first proposals to create an intelligence corps came in 1905, the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
