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Reconnaissance Balloon
An observation balloon is a type of balloon that is employed as an aerial platform for gathering intelligence and spotting artillery. The use of observation balloons began during the French Revolutionary Wars, reaching their zenith during World War I, and they continue in limited use today. Synonyms include espionage balloon, reconnaissance balloon, spy balloon, and surveillance balloon. Historically, observation balloons were filled with hydrogen. The balloons were fabric envelopes filled with hydrogen gas, the flammable nature of which led to the destruction of hundreds of balloons. Observers manning these observation balloons frequently had to use a parachute to evacuate their balloon when it came under attack. Shortly after World War I, observation balloons were often filled with non-flammable helium to avoid the potentially explosive consequences of hydrogen. Typically, balloons were tethered to a steel cable attached to a winch that reeled the gas bag to its desired heig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Observation Balloon RAE-O982a
Observation in the natural sciences is an act or instance of noticing or perceiving and the acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity. Observations can be qualitative, that is, the absence or presence of a property is noted and the observed phenomenon described, or quantitative if a numerical value is attached to the observed phenomenon by counting or measuring. Science The scientific method requires observations of natural phenomena to formulate and test hypotheses. It consists of the following steps: # Ask a question about a phenomenon # Make observations of the phenomenon # Formulate a hypothesis that tentatively answers the question # Predict logical, observable consequences of the hypothesis that have not yet been investigated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vienna
Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. Its larger metropolitan area has a population of nearly 2.9 million, representing nearly one-third of the country's population. Vienna is the Culture of Austria, cultural, Economy of Austria, economic, and Politics of Austria, political center of the country, the List of cities in the European Union by population within city limits, fifth-largest city by population in the European Union, and the most-populous of the List of cities and towns on the river Danube, cities on the river Danube. The city lies on the eastern edge of the Vienna Woods (''Wienerwald''), the northeasternmost foothills of the Alps, that separate Vienna from the more western parts of Austria, at the transition to the Pannonian Basin. It sits on the Danube, and is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Royal Flying Corps On The Western Front, 1914-1918 Q11901
''The'' is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archaic pronoun ''thee' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balloons (WWI)
A balloon is a flexible membrane bag that can be inflated with a gas, such as helium, hydrogen, nitrous oxide, oxygen, or air. For special purposes, balloons can be filled with smoke, liquid water, granular media (e.g. sand, flour or rice), or light sources. Modern day balloons are made from materials such as rubber, latex, polychloroprene, or a nylon fabric, and can come in many different colors. Some early balloons were made of dried animal bladders, such as the pig bladder. Some balloons are used for decorative purposes or entertaining purposes, while others are used for practical purposes such as meteorology, medical treatment, military defense, or transportation. A balloon's properties, including its low density and low cost, have led to a wide range of applications. The rubber balloon was invented by Michael Faraday in 1824, during experiments with various gases. He invented them for use in the lab. Applications Play Decoration Balloons are used for decorating b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraguayan War
The Paraguayan War (, , ), also known as the War of the Triple Alliance (, , ), was a South American war that lasted from 1864 to 1870. It was fought between Paraguay and the Triple Alliance of Argentina, the Empire of Brazil, and Uruguay. It was the deadliest and bloodiest inter-state war in Latin American history. Paraguay sustained large casualties, but even the approximate numbers are disputed. Paraguay was forced to cede disputed territory to Argentina and Brazil. The war began in late 1864, as a result of a conflict between Paraguay and Brazil caused by the Uruguayan War. Argentina and Uruguay entered the war against Paraguay in 1865, and it then became known as the "War of the Triple Alliance". After Paraguay was defeated in conventional warfare, it conducted a drawn-out guerrilla resistance, a strategy that resulted in the further destruction of the Paraguayan military and the civilian population. Much of the civilian population died due to battle, hunger, and disease. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empire Of Brazil
The Empire of Brazil was a 19th-century state that broadly comprised the territories which form modern Brazil and Uruguay until the latter achieved independence in 1828. The empire's government was a Representative democracy, representative Parliamentary system, parliamentary constitutional monarchy under the rule of Emperors Pedro I of Brazil, Pedro I and his son Pedro II of Brazil, Pedro II. A Colonial Brazil, colony of the Kingdom of Portugal, Brazil became the seat of the Portuguese Empire in 1808, when the Portuguese Prince regent, later King Dom João VI of Portugal, John VI, fled from Napoleon's Invasion of Portugal (1807), invasion of Portugal and Transfer of the Portuguese Court to Brazil, established himself and his government in the Brazilian city of Rio de Janeiro. John VI later returned to Portugal, leaving his eldest son and heir-apparent, Pedro, to rule the Kingdom of Brazil as regent. On 7 September 1822, Pedro declared the independence of Brazil and, after waging ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siege Of Ladysmith
The siege of Ladysmith was a protracted engagement in the Second Boer War, taking place between 2 November 1899 and 28 February 1900 at Ladysmith, Natal. Boer invasion of Natal Outbreak of war The Second Boer War began on 11 October 1899 when the Boer republics of Transvaal and the Orange Free State (OFS), under their Presidents Paul Kruger and Martinus Theunis Steyn respectively, declared war on the British Empire. Two days previously, the republics had issued a joint ultimatum demanding the withdrawal of British troops from the northern part of Natal—which bordered OFS on the west and Transvaal on the east—and the recall of all reinforcements dispatched to Natal in recent weeks. The British government ignored the ultimatum, which they are held to have provoked. They claimed to be protecting the interests of its own citizens who lived in Transvaal. Kruger's Afrikaner government refused to extend the franchise to Uitlanders ("foreigners"), who potentially outnumbered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Magersfontein
The Battle of MagersfonteinSpelt incorrectly in various English texts as "Majersfontein", "Maaghersfontein" and "Maagersfontein". ( ) was fought on 11 December 1899, at Magersfontein, near Kimberley, Northern Cape, Kimberley, South Africa, on the borders of the British Cape Colony, Cape Colony and the independent republic of the Orange Free State (now in Sol Plaatje Local Municipality, Northern Cape). United Kingdom, British forces under Lieutenant General Paul Sanford Methuen, 3rd Baron Methuen, Lord Methuen were advancing north along the railway line from the Cape to relieve the siege of Kimberley, but their path was blocked at Magersfontein by a Boer force that was entrenched in the surrounding hills. The British had already fought a series of battles with the Boers, most recently at Battle of Modder River, Modder River, where the advance was temporarily halted. Lord Methuen failed to perform adequate reconnaissance in preparation for the impending battle and was unaware that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Boer War
The Second Boer War (, , 11 October 189931 May 1902), also known as the Boer War, Transvaal War, Anglo–Boer War, or South African War, was a conflict fought between the British Empire and the two Boer republics (the South African Republic and Orange Free State) over Britain's influence in Southern Africa. The Witwatersrand Gold Rush caused a large influx of "Uitlander, foreigners" (''Uitlanders'') to the South African Republic (SAR), mostly British from the Cape Colony. As they, for fear of a hostile takeover of the SAR, were permitted to vote only after 14 years of residence, they protested to the British authorities in the Cape. Negotiations failed at the botched Bloemfontein Conference in June 1899. The conflict broke out in October after the British government decided to send 10,000 troops to South Africa. With a delay, this provoked a Boer and British ultimatum, and subsequent Boer Irregular military, irregulars and militia attacks on British colonial settlements in Natal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Air Force Museum
The Royal Air Force Museum is a museum dedicated to the Royal Air Force in the United Kingdom. The museum is a non-departmental public body and is a registered charity. It has two public sites, Royal Air Force Museum London and Royal Air Force Museum Midlands at RAF Cosford in Shropshire. History The idea of an RAF Museum was approved by the Air Council in 1931. However the Council only established the museum in 1964 after the idea was proposed by a historical committee chaired by Sir Dermot Boyle. The museum began collecting artifacts, which were initially stored at RAF Henlow. Land at the former Hendon Aerodrome in Colindale, London, was leased from the Ministry of Defence and the museum was opened there by Queen Elizabeth II in 1972 with 36 aircraft on display. The museum was part of the Ministry of Defence until it was split off and became a non-departmental public body in 1984. The Cosford Aerospace Museum formerly merged with the RAF Museum and became its secon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mahdist War
The Mahdist War (; 1881–1899) was fought between the Mahdist Sudanese, led by Muhammad Ahmad bin Abdullah, who had proclaimed himself the "Mahdi" of Islam (the "Guided One"), and the forces of the Khedivate of Egypt, initially, and later the forces of Britain. After four years, the Mahdist rebels overthrew the Ottoman-Egyptian administration with the fall of Khartoum and gained control over Sudan. The Mahdist State launched several unsuccessful invasions of their neighbours, expanding the scale of the conflict to also include the Italian Empire, the Congo Free State and the Ethiopian Empire. They also faced significant internal rebellion. Anglo-Egyptian forces reconquered Sudan in 1898 and the Mahdist state collapsed following defeat at the battle of Omdurman. The last organised resistance from the Mahdists ended the next year, leading to the creation of Anglo-Egyptian Sudan (1899–1956), a ''de jure'' condominium of the British Empire, and the Kingdom of Egypt, in which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bechuanaland Expedition
The Bechuanaland Expedition or Warren Expedition, of late 1884/1885, was a British military expedition to the Tswana country, to assert British sovereignty in the face of encroachments from Germany and the Transvaal, and to suppress the Boer states of Stellaland and Goshen. History In December 1884, Major-General Charles Warren was sent as HM Special Commissioner to command a military expedition to Bechuanaland, to assert British sovereignty in the face of encroachments from Germany and the Transvaal, and to suppress the Boer states of Stellaland and Goshen, which were backed by the Transvaal. Warren's force of 4,000 British and local troops headed north from Cape Town, accompanied by the first three observation balloons ever used by the British Army in the field. On 22 January, Warren met the Boer leader Paul Kruger at the Modder River where Kruger sought to bring the expedition to a halt on the basis that he would take responsibility for maintaining order in the Tswana c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
