|
1715 In Science
The year 1715 in science and technology involved some significant events. Astronomy * May 3 – Total solar eclipse across southern England, Sweden and Finland (last total eclipse visible in London for almost 900 years). * Edmond Halley suggests that nebulae are clouds of interstellar gas. * Publication in London of David Gregory's ''The elements of astronomy, physical and geometrical... Done into English'', containing the first recorded use in English of the word ''Physics'' in its modern scientific sense and the first mention of a series approximating the Titius–Bode law on celestial orbits. Discoveries * Mine La Motte, in Madison county, Missouri, is discovered by De la Motte Cadillac. * The "miracle" springs are discovered in Cheltenham, England, a small Cotswold village at the time. Geology * Edmund Halley suggests using the salinity and evaporation of salt lakes to determine the age of the Earth. Mathematics * Brook Taylor's ''Methodus Incrementorum Directa et Inver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Age Of The Earth
The age of Earth is estimated to be 4.54 ± 0.05 billion years. This age may represent the age of Earth's accretion (astrophysics), accretion, or Internal structure of Earth, core formation, or of the material from which Earth formed. This dating is based on evidence from Radiometric dating, radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial material and Moon rock, lunar samples. Following the development of radiometric age-dating in the early 20th century, uranium–lead dating, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old.For the abstract, see: The oldest such minerals analyzed to date—small crystals of zircon from the Jack Hills of Western Australia—are at least 4.404 billion years old. Calcium–aluminium-rich inclusions—the oldest known solid constituents within meteorites that are formed within the Solar System—are 4.567 billion years old, gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brod Fortress
The Fortress of Brod is a fortress in Slavonski Brod, Croatia with significant cultural heritage. The fortress was constructed in the 18th century by the Archduchy of Austria to create a defense against the Ottoman Empire. History The city of Slavonski Brod, Croatia was an important strategic and traffic center controlling the border crossing towards Turkey and connecting main commercial trails at the time. In the period between 1715 and 1780 Austria built the large imperial and royal border Fortress of Brod on the Sava River. Along with the fortified baroque towns of Slavonia, Osijek and Stara Gradiška, it belongs to the great defense system on the border towards the Turkish Empire, designed by Prince Eugene of Savoy in the first half of the 18th century. It was constructed by peasants of the Military Border under forced labor more specifically 634 a day, who also gave 53 horse-drawn carts daily for the transport of material. The regular star-like form of the fortress was determine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire Extinguisher
A fire extinguisher is a handheld active fire protection device usually filled with a dry or wet chemical used to extinguish or control small fires, often in emergencies. It is not intended for use on an out-of-control fire, such as one which has reached the ceiling, endangers the user (i.e., no escape route, smoke, explosion hazard, etc.), or otherwise requires the equipment, personnel, resources or expertise of a fire brigade. Typically, a fire extinguisher consists of a hand-held cylindrical pressure vessel containing an #Types of extinguishing agents, agent that can be discharged to extinguish a fire. Fire extinguishers manufactured with non-cylindrical pressure vessels also exist, but are less common. There are two main types of fire extinguishers: stored-pressure and cartridge-operated. In stored-pressure units, the expellant is stored in the same chamber as the firefighting agent itself. Depending on the agent used, different propellants are used. With dry chemical extingu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toulouse
Toulouse (, ; ; ) is a city in southern France, the Prefectures in France, prefecture of the Haute-Garonne department and of the Occitania (administrative region), Occitania region. The city is on the banks of the Garonne, River Garonne, from the Mediterranean Sea, from the Atlantic Ocean and from Paris. It is the List of communes in France with over 20,000 inhabitants, fourth-largest city in France after Paris, Marseille and Lyon, with 511,684 inhabitants within its municipal boundaries (2022); its Functional area (France), metropolitan area has a population of 1,513,396 inhabitants (2022). Toulouse is the central city of one of the 22 Métropole, metropolitan councils of France. Between the 2014 and 2020 censuses, its metropolitan area was the third fastest growing among metropolitan areas larger than 500,000 inhabitants in France. Toulouse is the centre of the European aerospace industry, with the headquarters of Airbus, the SPOT (satellites), SPOT satellite system, ATR ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raymond Vieussens
Raymond Vieussens (ca. 1635 – 16 August 1715) was a French anatomist from Le Vigan. There is uncertainty regarding the exact year of Vieussens birth, with some sources placing it as late as 1641. He studied medicine at the University of Montpellier where he earned his degree in 1670. He later became head physician at Hôtel Dieu Saint-Eloi in Montpellier. Vieussens is remembered for his pioneer work in the field of cardiology, and his anatomical studies of the brain and spinal cord. He regarded English anatomist Thomas Willis (1621–1675) as a major influence towards his career. Vieussens is credited as being the first physician to give accurate descriptions of the left ventricle and several blood vessels of the heart. He was also the first to give a comprehensive description of mitral stenosis, as well as other types of heart disease and circulatory disorders. He also provided an early description of the brain's centrum semiovale, which is sometimes referred to as "Vieusse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
