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Théodore Sivel
Théodore Sivel (10 November 1833 – 15 April 1875) was a French navy officer and aeronaut. He designed and died on the gas balloon Zénith (balloon), ''Zénith''. Biography Théodore Henri Sivel was the son of Alexandre Sivel and Caroline Brès, a Protestantism in France, Protestant family. He was born in Pignet, a kilometer southeast of Sauve, in the family home. At the age of , he embarked on distant seas and sailed for nearly twenty years, circumnavigating the globe multiple times. He became a long-distance captain. He was part of the French delegation that attended the coronation of Radama II, Radama, King of Madagascar. Around 1866, the naval officer, attracted by air navigation, abandoned the seas for the skies. In 1867, he married Marie Poitevin in Bern, who passed away the following year in Naples. He served France during the Franco-Prussian War, Franco-Prussian War of 1870. In 1872, he joined the Paris Aeronautical Navigation Society and caught the attention of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gard
Gard () is a department in Southern France, located in the region of Occitanie. It had a population of 748,437 as of 2019;Populations légales 2019: 30 Gard INSEE its prefecture is Nîmes. The department is named after the river Gardon. In recent decades of the 21st century, local administration and French speakers have returned to the original Occitan name of the river, Gard (). It is part of a revival of Occitan culture. His ...
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Stars
A star is a luminous spheroid of plasma held together by self-gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances from Earth make them appear as fixed points of light. The most prominent stars have been categorised into constellations and asterisms, and many of the brightest stars have proper names. Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. The observable universe contains an estimated to stars. Only about 4,000 of these stars are visible to the naked eye—all within the Milky Way galaxy. A star's life begins with the gravitational collapse of a gaseous nebula of material largely comprising hydrogen, helium, and traces of heavier elements. Its stellar mass, total mass mainly determines its stellar evolution, evolution and eventual fate. A star shines for main sequence, most of its active life due to the thermonu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerostat
An aerostat (, via French) or lighter-than-air aircraft is an aircraft that relies on buoyancy to maintain flight. Aerostats include unpowered balloons (free-flying or tethered) and powered airships. The relative density of an aerostat as a whole is lower than that of the surrounding atmospheric air (hence the name "lighter-than-air"). Its main component is one or more gas capsules made of lightweight skins, containing a lifting gas (hot air, or any gas with lower density than air, typically hydrogen or helium) that displaces a large volume of air to generate enough buoyancy to overcome its own weight. Payload (passengers and cargo) can then be carried on attached components such as a basket, a gondola, a cabin or various hardpoints. With airships, which need to be able to fly against wind, the lifting gas capsules are often protected by a more rigid outer envelope or an airframe, with other gasbags such as ballonets to help modulate buoyancy. Aerostats are so named ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myopia
Myopia, also known as near-sightedness and short-sightedness, is an eye condition where light from distant objects focuses in front of, instead of on, the retina. As a result, distant objects appear blurry, while close objects appear normal. Other symptoms may include headaches and eye strain. Severe myopia is associated with an increased risk of macular degeneration, retinal detachment, cataracts, and glaucoma. Myopia results from the length of the eyeball growing too long or less commonly the lens being too strong. It is a type of refractive error. Diagnosis is by the use of cycloplegics during eye examination. Tentative evidence indicates that the risk of myopia can be decreased by having young children spend more time outside. This decrease in risk may be related to natural light exposure. Myopia can be corrected with eyeglasses, contact lenses, or by refractive surgery. Eyeglasses are the simplest and safest method of correction. Contact lenses can provide a rela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barometer
A barometer is a scientific instrument that is used to measure air pressure in a certain environment. Pressure tendency can forecast short term changes in the weather. Many measurements of air pressure are used within surface weather analysis to help find surface Trough (meteorology), troughs, pressure systems and weather front, frontal boundaries. Barometers and pressure altimeters (the most basic and common type of altimeter) are essentially the same instrument, but used for different purposes. An altimeter is intended to be used at different levels matching the corresponding atmospheric pressure to the altitude, while a barometer is kept at the same level and measures subtle pressure changes caused by weather and elements of weather. The average atmospheric pressure on the Earth's surface varies between 940 and 1040 hPa (mbar). The average atmospheric pressure at sea level is 1013 hPa (mbar). Etymology The word ''wikt:barometer, barometer'' is derived from the Ancient Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Nature
''La Nature'' (English: ''Nature'') was a French language magazine aimed at the popularization of science established in 1873 by French scientist and adventurer Gaston Tissandier. The magazine also received an enormous amount of time, effort, and contributions from his brother, Albert Tissandier. Evolution The beginning From 1873 to 1914, each year's volume started at the beginning of December. The second six-month period began with the first issue in June. Starting in 1915, ''La Natures publishing year was brought in sync with the calendar year. A weekly magazine until the 1920s, it became first fortnightly and then monthly in 1948. Second World War During the Second World War, ''La Nature'' was published only erratically. The first interruption in publishing lasted from September 15 to December 15, 1939, with only an additional six issues published during all of 1940. 1941 saw 12 issues published, on the 15th of each month. There were other suspensions in publication, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaston Tissandier
Gaston Tissandier (November 21, 1843 – August 30, 1899) was a French chemist, meteorologist, aviator, and editor. He founded and edited the scientific magazine ''La Nature'' and wrote several books. His brother was illustrator Albert Tissandier. His son Paul became a well known aviator in his own right. Biography Gaston Tissandier was born in Paris in 1843. He studied chemistry and in 1864 became the head of the experimental laboratory of Union nationales. He was also a teacher at Association polytechnique. His interest in meteorology led him to take up aviation. His first trip in the air was conducted at Calais in 1868 together with , where his balloon drifted out over the sea and was brought back by an air stream of opposite direction in a higher layer of air. In September 1870, during the Franco-Prussian War, he managed to escape the besieged Paris by balloon. His most adventurous air trip took place near Paris in April 1875. He and companions Joseph Crocé-Spinelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Altitude Record
This listing of flight altitude records are the records set for the highest aeronautical flights conducted in the atmosphere and beyond, set since the age of ballooning. Some, but not all of the records were certified by the non-profit international aviation organization, the Fédération Aéronautique Internationale (FAI). One reason for a lack of 'official' certification was that the flight occurred prior to the creation of the FAI. For clarity, the "Fixed-wing aircraft" table is sorted by FAI-designated categories as determined by whether the record-creating aircraft left the ground by its own power (category "Altitude"), or whether it was first carried aloft by a carrier-aircraft prior to its record setting event (category "Altitude gain", or formally "Altitude Gain, Aeroplane Launched from a Carrier Aircraft"). Other sub-categories describe the airframe, and more importantly, the powerplant type (since rocket-powered aircraft can have greater altitude abilities than those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ciron (Indre)
Ciron () is a commune in the Indre department in central France. It is notable for its twelfth-century lanterne des morts, Eglise Saint-Georges, and the chateau Romefort by the picturesque river Creuse. An abandoned railroad goes through the village south of national route D951, which bisects the village. Geography The commune is located in the parc naturel régional de la Brenne. The river Creuse borders the commune to the south. There is one bridge crossing over the Creuse in Ciron that connects the commune with the medieval chateau of Romefort, which dates from the era of the Hundred Year War between the English and the French crowns. Romefort consists of the donjon and a residential wing, and there is the ruins of a notable attached watermill by the Creuse river. Population See also *Communes of the Indre department The following is a list of the 241 communes of the Indre department of France. The communes cooperate in the following intercommunalities (as of 202 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypoxia (medical)
Hypoxia is a condition in which the body or a region of the body is deprived of an adequate oxygen supply at the tissue (biology), tissue level. Hypoxia may be classified as either ''Generalized hypoxia, generalized'', affecting the whole body, or ''local'', affecting a region of the body. Although hypoxia is often a pathological condition, variations in arterial oxygen concentrations can be part of the normal physiology, for example, during strenuous physical exercise. Hypoxia differs from hypoxemia and anoxemia, in that hypoxia refers to a state in which oxygen present in a tissue or the whole body is insufficient, whereas hypoxemia and anoxemia refer specifically to states that have low or no Oxygen saturation (medicine), oxygen in the blood. Hypoxia in which there is complete absence of oxygen supply is referred to as anoxia. Hypoxia can be due to external causes, when the breathing gas is hypoxic, or internal causes, such as reduced effectiveness of gas transfer in the lung ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th Arrondissement Of Paris
The 19th arrondissement of Paris (''XIXe arrondissement'') is one of the 20 arrondissements of the capital city of France. In spoken French, this arrondissement is referred to as ''dix-neuvième''. The arrondissement, known as Butte-Chaumont, is situated on the right bank of the River Seine. It is crossed by two canals, the Canal Saint-Denis and the Canal de l'Ourcq, which meet near the Parc de la Villette. The 19th arrondissement, mixing the Old French bohemianism and also the Parisian cosmopolitanism, includes two public parks: the Parc des Buttes Chaumont, located on a hill, and the Parc de la Villette, which is home to the Cité des Sciences et de l'Industrie, a museum and exhibition centre, the Conservatoire de Paris, one of the most renowned music schools in Europe, the Cabaret Sauvage, the Zénith de Paris and the Philharmonie de Paris, both part of the Cité de la Musique. Geography The land area of the arrondissement is . The arrondissement consists of four ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
View Of Journalist Joseph Crocé-Spinelli, Naval Officer Henri Sivel, And Gaston Tissandier In The Basket Of The Balloon, "Zénith," After Losing Consciousness Due To Lack Of Oxygen After Reaching LCCN2002724811
Acornsoft was the software arm of Acorn Computers, and a major publisher of software for the BBC Micro and Acorn Electron. As well as games, it also produced a large number of educational titles, extra computer languages and business and utility packages – these included word processor ''VIEW'' and the spreadsheet ''ViewSheet'' supplied on ROM and cartridge for the BBC Micro/Acorn Electron and included as standard in the BBC Master and Acorn Business Computer. History Acornsoft was formed in late 1980 by Acorn Computers directors Hermann Hauser and Chris Curry, and David Johnson-Davies, author of the first game for a UK personal computer and of the official Acorn Atom manual "Atomic Theory and Practice". David Johnson-Davies was managing director and in early 1981 was joined by Tim Dobson, Programmer and Chris Jordan, Publications Editor. While some of their games were clones or remakes of popular arcade games (e.g. ''Hopper'' is a clone of Sega's ''Frogger'', '' Snapper' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
