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Observation Balloon
An observation balloon is a type of balloon that is employed as an aerial platform for intelligence gathering and artillery spotting. 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, or surveillance balloon. Historically, observation balloons were filled with hydrogen. The balloons were fabric envelopes filled with hydrogen gas, whose flammable nature led to the destruction of hundreds of balloons on both sides. Observers manning these observation balloons frequently had to use a parachute to evacuate their balloon when it came under attack. To avoid the potentially flammable consequences of hydrogen, observation balloons after World War I were often filled with non-flammable helium. Typically, balloons were tethered to a steel cable attached to a winch that reeled the gasbag to its desired height (usually 1,000-1,5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Observation Balloon RAE-O982a
Observation is the active 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 (information), data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity. Observations can be qualitative property, qualitative, that is, only the absence or presence of a property is noted, or quantitative data, quantitative if a numerical value is attached to the observed phenomenon by counting or measurement, measuring. Science The scientific method requires observations of list of natural phenomena, natural phenomena to formulate and test hypothesis, hypotheses. It consists of the following steps: # Ask a question about a natural phenomenon # Make observations of the phenomenon # Formulate a hypothesis that tentatively answers the question # prediction, Predict logical, observable consequent, consequences of the hy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vienna
en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST = CEST , utc_offset_DST = +2 , blank_name = Vehicle registration , blank_info = W , blank1_name = GDP , blank1_info = € 96.5 billion (2020) , blank2_name = GDP per capita , blank2_info = € 50,400 (2020) , blank_name_sec1 = HDI (2019) , blank_info_sec1 = 0.947 · 1st of 9 , blank3_name = Seats in the Federal Council , blank3_info = , blank_name_sec2 = GeoTLD , blank_info_sec2 = .wien , website = , footnotes = , image_blank_emblem = Wien logo.svg , blank_emblem_size = Vienna ( ; german: Wien ; ba ... [...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 persons or things already 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 pronouns 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 pronoun ''thee'') when followed by a v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balloons (WWI)
A balloon is a flexible bag that can be inflated with a gas, such as helium, hydrogen, nitrous oxide, oxygen, and air. For special tasks, 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 birthday part ... [...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 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 lost their lives due to battle, hunger, and disease. The guer ... [...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 (until 1828) Uruguay. Its government was a representative parliamentary constitutional monarchy under the rule of Emperors Dom Pedro I and his son Dom Pedro II. A colony of the Kingdom of Portugal, Brazil became the seat of the Portuguese colonial Empire in 1808, when the Portuguese Prince regent, later King Dom John VI, fled from Napoleon's invasion of Portugal and 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 a successful war against his father's kingdom, was acclaimed on 12 October as Pedro I, the first Emperor of Brazil. The new country was huge, sparsely populated and ethnically diverse. The only ot ... [...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. Background As war with the Boer republics appeared likely in June 1899, the War Office in Britain dispatched a total of 15,000 troops to Natal, expecting that if war broke out they would be capable of defending the colony until reinforcements could be mobilized and sent to South Africa by steamship. Some of these troops were diverted while returning to Britain from India, others were sent from garrisons in the Mediterranean and elsewhere. Lieutenant General Sir George White was appointed to command this enlarged force. White was 64 years old and suffered from a leg injury incurred in a riding accident. Having served mainly in India, he had little previous experience in South Africa. Outbreak of war Contrary to the advice of several British officials such as Sir Alfred Milner, the High Commissioner for Southern Africa, the Bo ... [...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, South Africa, on the borders of the Cape Colony and the independent republic of the Orange Free State. British forces under Lieutenant General 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 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 Boer ''Vecht-generaal'' (Combat General) De la Rey had entrenched his forces at the foot of the hills, rather than the forward slopes, as was the accepted practice. That allowed t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Boer War
The Second Boer War ( af, Tweede Vryheidsoorlog, , 11 October 189931 May 1902), also known as the Boer War, the Anglo–Boer War, or the South African War, was a conflict fought between the British Empire and the two Boer Republics (the South African Republic and the Orange Free State) over the Empire's influence in Southern Africa from 1899 to 1902. Following the discovery of gold deposits in the Boer republics, there was a large influx of "foreigners", mostly British from the Cape Colony. They were not permitted to have a vote, and were regarded as "unwelcome visitors", invaders, and they protested to the British authorities in the Cape. Negotiations failed and, in the opening stages of the war, the Boers launched successful attacks against British outposts before being pushed back by imperial reinforcements. Though the British swiftly occupied the Boer republics, numerous Boers refused to accept defeat and engaged in guerrilla warfare. Eventually, British scorched eart ... [...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 of the Ministry of Defence and is a registered charity. The museum is split into two separate sites: * Royal Air Force Museum London, opened 1972 * Royal Air Force Museum Cosford, opened 1979 See also * Simon Greenish, former Director of Collections * Maggie Appleton Margaret Mary Appleton (born 21 August 1965) is an English museum director. She has been the Chief Executive Officer of the RAF Museum since 2015.https://www.rafmuseum.org.uk/documents/press_releases/cosford/CEO_RAF_Museum_Press_Release.pdf Ear ..., CEO References External links Official website {{Authority control Ministry of Defence (United Kingdom) Non-departmental public bodies of the United Kingdom government Air force museums in the United Kingdom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mahdist War
The Mahdist War ( ar, الثورة المهدية, ath-Thawra al-Mahdiyya; 1881–1899) was a war between the Mahdist Sudanese of the religious leader Muhammad Ahmad bin Abd Allah, 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. Eighteen years of war resulted in the nominally joint-rule state of the Anglo-Egyptian Sudan (1899–1956), a ''de jure'' condominium of the British Empire and the Kingdom of Egypt in which Britain had ''de facto'' control over the Sudan. The Sudanese launched several unsuccessful invasions of their neighbours, expanding the scale of the conflict to include not only Britain and Egypt but also the Italian Empire, the Congo Free State and the Ethiopian Empire. The British participation in the war is called the Sudan campaign. Other names for this war include the Mahdist Revolt, the Anglo–Sudan War and the Sudanese Mahdist Revolt. Background Followi ... [...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 co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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