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Parachutes
A parachute is a device used to slow the motion of an object through an atmosphere by creating drag or, in a ram-air parachute, aerodynamic lift. A major application is to support people, for recreation or as a safety device for aviators, who can exit from an aircraft at height and descend safely to earth. A parachute is usually made of a light, strong fabric. Early parachutes were made of silk. The most common fabric today is nylon. A parachute's canopy is typically dome-shaped, but some are rectangles, inverted domes, and other shapes. A variety of loads are attached to parachutes, including people, food, equipment, space capsules, and bombs. History Middle Ages In 852, in Córdoba, Spain, the Moorish man Armen Firman attempted unsuccessfully to fly by jumping from a tower while wearing a large cloak. It was recorded that "there was enough air in the folds of his cloak to prevent great injury when he reached the ground." Early Renaissance The earliest evidence f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nylon
Nylon is a generic designation for a family of synthetic polymers composed of polyamides ( repeating units linked by amide links).The polyamides may be aliphatic or semi-aromatic. Nylon is a silk-like thermoplastic, generally made from petroleum, that can be melt-processed into fibers, films, or shapes. Nylon polymers can be mixed with a wide variety of additives to achieve many property variations. Nylon polymers have found significant commercial applications in fabric and fibers (apparel, flooring and rubber reinforcement), in shapes (molded parts for cars, electrical equipment, etc.), and in films (mostly for food packaging). History DuPont and the invention of nylon Researchers at DuPont began developing cellulose based fibers, culminating in the synthetic fiber rayon. DuPont's experience with rayon was an important precursor to its development and marketing of nylon. DuPont's invention of nylon spanned an eleven-year period, ranging from the initial researc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fausto Veranzio
Fausto Veranzio ( la, Faustus Verantius; hr, Faust Vrančić; Hungarian and Vernacular Latin: ''Verancsics Faustus'';Andrew L. SimonMade in Hungary: Hungarian contributions to universal culture/ref>The Hungarian Quarterly, Vol. XLII * No. 162 *, Summer 2001 László Sipka: Innovators and Innovations 1551 – 20 January 1617) was a and from , then part of the |
Space Capsule
A space capsule is an often-crewed spacecraft that uses a blunt-body reentry capsule to reenter the Earth's atmosphere without wings. Capsules are distinguished from other satellites primarily by the ability to survive reentry and return a payload to the Earth's surface from orbit. Capsule-based crewed spacecraft such as Soyuz or Orion are often supported by a service or adapter module, and sometimes augmented with an extra module for extended space operations. Capsules make up the majority of crewed spacecraft designs, although one crewed spaceplane, the Space Shuttle, has flown in orbit. Current examples of crewed space capsules include Soyuz, Shenzhou, and Dragon 2. Examples of new crew capsules currently in development include NASA's Orion, Boeing's Starliner, Russia's Orel, India's Gaganyaan, and China's next-generation crewed spacecraft. Historic examples of crewed capsules include Vostok, Mercury, Voskhod, Gemini, and Apollo, and active programs include the N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Codex Atlanticus
The Codex Atlanticus (Atlantic Codex) is a 12-volume, bound set of drawings and writings (in Italian) by Leonardo da Vinci, the largest single set. Its name indicates the large paper used to preserve original Leonardo notebook pages, which was used for atlases. It comprises 1,119 leaves dating from 1478 to 1519, the contents covering a great variety of subjects, from flight to weaponry to musical instruments and from mathematics to botany. This codex was gathered in the late 16th century by the sculptor Pompeo Leoni, who dismembered some of Leonardo's notebooks in its formation. It is now in the Biblioteca Ambrosiana in Milan. Description The Codex Atlanticus is the largest single collection of drawings and writings (in Italian) by polymath Leonardo da Vinci, containing 1,119 paper leaves (2,238 pages) arranged into 12 leather-bound volumes. Its size and scope has led art historian Carlo Pedretti to recognize it as the most important of Leonardo's manuscripts. The pages are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bangladesh Air Force (BAF) Paratroopers Jump From A U
The Bangladesh Air Force (BAF) ( bn, বাংলাদেশ বিমান বাহিনী, Bangladesh Biman Bahini) is the aerial warfare branch of the Bangladesh Armed Forces. The Air Force is primarily responsible for air defence of Bangladesh's sovereign territory as well as providing air support to the Bangladesh Army and Bangladesh Navy. Furthermore, the BAF has a territorial role in providing tactical and strategic air transport and logistics capability for the country. Since its establishment on 28 September 1971, the Air Force has been involved in various combat and humanitarian operations, from the Bangladesh Liberation War in which it was born, to supporting international efforts including United Nations peacekeeping missions. Operation Kilo Flight was a famous operation conducted by the Bangladesh Air Force during the Bangladesh Liberation War. History Foundation The Bangladesh Air Force was officially formed on 28 September 1971 consisting of the revolting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fox News
The Fox News Channel, abbreviated FNC, commonly known as Fox News, and stylized in all caps, is an American multinational conservative cable news television channel based in New York City. It is owned by Fox News Media, which itself is owned by the Fox Corporation. The channel broadcasts primarily from studios at 1211 Avenue of the Americas in Midtown Manhattan. Fox News provides service to 86 countries and overseas territories worldwide, with international broadcasts featuring Fox Extra segments during ad breaks. The channel was created by Australian-American media mogul Rupert Murdoch in 1996 to appeal to a conservative audience, hiring former Republican media consultant and CNBC executive Roger Ailes as its founding CEO. It launched on October 7, 1996, to 17 million cable subscribers. Fox News grew during the late 1990s and 2000s to become the dominant United States cable news subscription network. , approximately 87,118,000 U.S. households (90.8% of televisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamburg
Hamburg (, ; nds, label=Hamburg German, Low Saxon, Hamborg ), officially the Free and Hanseatic City of Hamburg (german: Freie und Hansestadt Hamburg; nds, label=Low Saxon, Friee un Hansestadt Hamborg),. is the List of cities in Germany by population, second-largest city in Germany after Berlin, as well as the overall List of cities in the European Union by population within city limits, 7th largest city and largest non-capital city in the European Union with a population of over 1.85 million. Hamburg's urban area has a population of around 2.5 million and is part of the Hamburg Metropolitan Region, which has a population of over 5.1 million people in total. The city lies on the River Elbe and two of its tributaries, the River Alster and the Bille (Elbe), River Bille. One of Germany's 16 States of Germany, federated states, Hamburg is surrounded by Schleswig-Holstein to the north and Lower Saxony to the south. The official name reflects History of Hamburg, Hamburg's history ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British People
British people or Britons, also known colloquially as Brits, are the citizens of the United Kingdom of Great Britain and Northern Ireland, the British Overseas Territories, and the Crown dependencies.: British nationality law governs modern British citizenship and nationality, which can be acquired, for instance, by descent from British nationals. When used in a historical context, "British" or "Britons" can refer to the Ancient Britons, the indigenous inhabitants of Great Britain and Brittany, whose surviving members are the modern Welsh people, Cornish people, and Bretons. It also refers to citizens of the former British Empire, who settled in the country prior to 1973, and hold neither UK citizenship nor nationality. Though early assertions of being British date from the Late Middle Ages, the Union of the Crowns in 1603 and the creation of the Kingdom of Great Britain in 1707 triggered a sense of British national identity.. The notion of Britishness and a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adrian Nicholas
Adrian Nicholas (4 March 1962 – 17 September 2005) was a British skydiver who completed more than 8,000 jumps in 30 countries. He is best known for his successful test in July 2000 of Leonardo da Vinci's (1452–1519) parachute design, proving it to be in retrospect the world's first working parachute. A modified pyramidal design was later also successfully tested by his Swiss colleague Olivier Vietti-Teppa. World records On 12 March 1999, Nicholas stepped out of an aeroplane at . He flew for 4 minutes, 55 seconds and covered a distance of , establishing new world records for the longest sky dive and the furthest human flight. During the attempt the exhaust valve of his oxygen mask froze preventing him from breathing properly for about four minutes. Death On 17 September 2005 Nicholas was jumping in Texel, the Netherlands. While performing a high speed landing manoeuvre, his automatic activation device In skydiving, an automatic activation device (AAD) is a dead man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC News
BBC News is an operational business division of the British Broadcasting Corporation (BBC) responsible for the gathering and broadcasting of news and current affairs in the UK and around the world. The department is the world's largest broadcast news organisation and generates about 120 hours of radio and television output each day, as well as online news coverage. The service maintains 50 foreign news bureaus with more than 250 correspondents around the world. Deborah Turness has been the CEO of news and current affairs since September 2022. In 2019, it was reported in an Ofcom report that the BBC spent £136m on news during the period April 2018 to March 2019. BBC News' domestic, global and online news divisions are housed within the largest live newsroom in Europe, in Broadcasting House in central London. Parliamentary coverage is produced and broadcast from studios in London. Through BBC English Regions, the BBC also has regional centres across England and national new ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homo Volans
''Homo'' () is the genus that emerged in the (otherwise extinct) genus ''Australopithecus'' that encompasses the extant species ''Homo sapiens'' (modern humans), plus several extinct species classified as either ancestral to or closely related to modern humans (depending on the species), most notably ''Homo erectus'' and ''Homo neanderthalensis''. The genus emerged with the appearance of ''Homo habilis'' just over 2 million years ago. ''Homo'', together with the genus ''Paranthropus'', is probably sister to ''Australopithecus africanus'', which itself had previously split from the lineage of '' Pan'', the chimpanzees. ''Homo erectus'' appeared about 2 million years ago and, in several early migrations, spread throughout Africa (where it is dubbed ''Homo ergaster'') and Eurasia. It was likely that the first human species lived in a hunter-gatherer society and was able to control fire. An adaptive and successful species, ''Homo erectus'' persisted for more than a million years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lynn White
Lynn Townsend White Jr. (April 29, 1907 – March 30, 1987) was an American historian. He was a professor of medieval history at Princeton from 1933 to 1937, and at Stanford from 1937 to 1943. He was president of Mills College, Oakland, from 1943 to 1958 and a professor at University of California, Los Angeles from 1958 until 1987. Lynn White helped to found the Society for the History of Technology (SHOT) and was president from 1960 to 1962. He won the Pfizer Award for "Medieval Technology and Social Change" from the History of Science Society (HSS) and the Leonardo da Vinci medal and Dexter prize from SHOT in 1964 and 1970. He was president of the History of Science Society from 1971 to 1972. He was president of The Medieval Academy of America from 1972–1973, and the American Historical Association in 1973. Biography White began his career as medieval historian focusing on the history of Latin monasticism in Sicily during the Norman Period but realized the coming conflict in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
