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Étienne-Hyacinthe De Ratte
Étienne-Hyacinthe de Ratte (1722, Montpellier – 15 August 1805) was an 18th-century French astronomer and mathematician. De Ratte made some verses in his youth, but he soon turned away from his natural tastes to engage with ardor in the study of mathematics. At twenty-one, he was secretary of the . De Ratte also wrote a number of contributions to the ''Encyclopédie'' on physical issues such as ''froid'', ''glace'', ''gelée'', etc. Although Ratte pursued diverse scientific interests, he devoted himself mainly to astronomy. In this discipline, he made a large number of observations, such as the Venus Venus is the second planet from the Sun. It is often called Earth's "twin" or "sister" planet for having almost the same size and mass, and the closest orbit to Earth's. While both are rocky planets, Venus has an atmosphere much thicker ... transit on 6 June 1761. The minor planet 159409 Ratte, discovered at Pises Observatory in 1999, was named in his memory. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomer
An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, natural satellite, moons, comets and galaxy, galaxies – in either observational astronomy, observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, Sun, solar astronomy, the Star formation, origin or stellar evolution, evolution of stars, or the galaxy formation and evolution, formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers typically fall under either of two main types: observational astronomy, observational and theoretical astronomy, theoretical. Observational astronomers make direct observations of Astronomical object, celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate Con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematical model, models, and mathematics#Calculus and analysis, change. History One of the earliest known mathematicians was Thales of Miletus (); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales's theorem. The number of known mathematicians grew when Pythagoras of Samos () established the Pythagorean school, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman math ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encyclopédie
, better known as ''Encyclopédie'' (), was a general encyclopedia published in France between 1751 and 1772, with later supplements, revised editions, and translations. It had many writers, known as the Encyclopédistes. It was edited by Denis Diderot and, until 1759, co-edited by Jean le Rond d'Alembert. The ''Encyclopédie'' is most famous for representing the thought of the Age of Enlightenment, Enlightenment. According to Denis Diderot in the article "Encyclopédie", the ''Encyclopédie'' aim was "to change the way people think" and for people to be able to inform themselves and to know things. He and the other contributors advocated for the secularization of learning away from the Jesuits. Diderot wanted to incorporate all of the world's knowledge into the ''Encyclopédie'' and hoped that the text could disseminate all this information to the public and future generations. Thus, it is an example of democratization of knowledge. It was also the first encyclopedia to include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venus
Venus is the second planet from the Sun. It is often called Earth's "twin" or "sister" planet for having almost the same size and mass, and the closest orbit to Earth's. While both are rocky planets, Venus has an atmosphere much thicker and denser than Earth and any other rocky body in the Solar System. Its atmosphere is composed of mostly carbon dioxide (), with a global sulfuric acid cloud cover and no liquid water. At the mean surface level the atmosphere reaches a temperature of and a pressure 92 times greater than Earth's at sea level, turning the lowest layer of the atmosphere into a supercritical fluid. Venus is the third brightest object in Earth's sky, after the Moon and the Sun, and, like Mercury, appears always relatively close to the Sun, either as a "morning star" or an "evening star", resulting from orbiting closer ( inferior) to the Sun than Earth. The orbits of Venus and Earth make the two planets approach each other in synodic periods of 1.6 years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
159409 Ratte
Events January–March * January 3 – Longvek, the capital of the Kingdom of Cambodia, is conquered by the army of the Ayutthaya Kingdom (now Thailand), commanded by King Naresuan, after more than two years of war. King Chey Chettha I of Cambodia is able to flee to Laos, along with the former King Satha I, but the rest of the royal family is taken hostage, along with Prince Srei Soriyopear. * January 17 – Construction of the Junagarh Fort in the Mughal Empire's principality of Bikaner (now in India's Rajasthan state) is completed after almost five years. * January 24 – William Shakespeare's play ''Titus Andronicus'', is given its first performance, presented by the Admiral's Men company of players at '' The Rose'' in London. * January 25 – The siege of Enniskillen Castle in Ireland (at County Fermanagh) is started by English commander John Dowdall, but is abandoned after one month. * February 2 – England's Admiral Richard Hawkins and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pises Observatory
Pises Observatory is an astronomical observatory at the Parc National des Cévennes in France. It is situated at altitude and houses an optical telescope with a charge-coupled device used for asteroid surveys. List of discovered minor planets See also * List of asteroid-discovering observatories * List of astronomical observatories This is a partial list of astronomical observatories ordered by name, along with initial dates of operation (where an accurate date is available) and location. The list also includes a final year of operation for many observatories that are no lon ... * References External links Pises Observatory Astronomical observatories in France * Minor-planet discovering observatories {{France-struct-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferdinand Hoefer
Jean Chrétien Ferdinand Hoefer (German: ''Ferdinand Höfer'', 21 April 1811, Döschnitz – 4 May 1878) was a German-French physician and lexicographer. He is now known for his many works on the history of science. Selected works *''Éléments de chimie générale'' (1841) *''Histoire de la chimie''Volume 1 (1842–43) * Dictionnaire de chimie et de physique ' (1846) *''Dictionnaire de médecine pratique'' (1847) * Afrique australe ... Afrique orientale ... Afrique centrale ... Empire de Maroc ' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre Larousse
Pierre Athanase Larousse (; 23 October 18173 January 1875) was a French grammarian, lexicographer and encyclopaedist. He published many of the outstanding educational and reference works of 19th-century France, including the 15-volume . Early life Pierre Larousse was born in Toucy, where his father was a blacksmith. At the age of sixteen he won a scholarship at the teaching school in Versailles. Four years later, he returned to Toucy to teach in a primary school, but became frustrated by the archaic and rigid teaching methods. In 1840 he moved to Paris to improve his own education by taking free courses. Career From 1848 to 1851, Larousse taught at a private boarding school, where he met his future wife, Suzanne Caubel (although they did not marry until 1872). Together, in 1849, they published a French language course for children. In 1851 he met Augustin Boyer, another disillusioned ex-teacher, and together they founded the ''Librairie Larousse et Boyer'' (Larousse and Boye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data
Data ( , ) are a collection of discrete or continuous values that convey information, describing the quantity, quality, fact, statistics, other basic units of meaning, or simply sequences of symbols that may be further interpreted formally. A datum is an individual value in a collection of data. Data are usually organized into structures such as tables that provide additional context and meaning, and may themselves be used as data in larger structures. Data may be used as variables in a computational process. Data may represent abstract ideas or concrete measurements. Data are commonly used in scientific research, economics, and virtually every other form of human organizational activity. Examples of data sets include price indices (such as the consumer price index), unemployment rates, literacy rates, and census data. In this context, data represent the raw facts and figures from which useful information can be extracted. Data are collected using technique ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1722 Births
Events January–March * January 27 – Daniel Defoe's novel ''Moll Flanders'' is published anonymously in London. * February 10 – The Battle of Cape Lopez begins off of the coast of West Africa (and present-day Gabon), as the Royal Navy brings an end to the piracy of Bartholomew Roberts, nicknamed "Black Bart". Captained by Chaloner Ogle of the Royal Navy, HMS Swallow (1703), HMS ''Swallow'' fires its cannons as Roberts sails his ship ''Royal Fortune'' toward the oncoming ''Swallow'' in order to gain time by forcing ''Swallow'' to turn around. Standing on the deck, Roberts and two of his crew are killed by the second wave of cannon fire. The remaining 272 pirate crew are captured. * February 16 – Peter the Great, Emperor of All Russia, announces that his heir to the throne will be his 4-year old grandson, Peter II of Russia, Prince Pyotr Alekseivich. * February 21 – Muhammad Shah, Nasir-ud-Din Muḥammad Shah, the Grand Mogul of north Indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1805 Deaths
After thirteen years the First French Empire abolished the French Republican Calendar in favour of the Gregorian calendar. Events January–March * January 11 – The Michigan Territory is created. * February 7 – King Anouvong becomes ruler of Vientiane on the death of his brother Inthavong. * February 15 – The Harmony Society is officially formed as a Christian community in Harmony, Pennsylvania. * March 1 – Justice Samuel Chase is acquitted of impeachment charges by the United States Senate. * March 5 – The New Brunswick Legislature passes a bill to advance literacy in the province, which eventually leads to the creation of public education in Canada. April–June * April 7 – Beethoven's Symphony No. 3, ''Eroica'', has its public premiere at the Theater an der Wien in Vienna under his baton. * April 27 – Battle of Derne: United States Marines and Berbers attack the Tripolitan city of Derna (the ''Shores of Tripoli''). * April 29 – Rut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
18th-century French Mathematicians
The 18th century lasted from 1 January 1701 (represented by the Roman numerals MDCCI) to 31 December 1800 (MDCCC). During the 18th century, elements of Enlightenment thinking culminated in the Atlantic Revolutions. Revolutions began to challenge the legitimacy of monarchical and aristocratic power structures. The Industrial Revolution began mid-century, leading to radical changes in human society and the environment. The European colonization of the Americas and other parts of the world intensified and associated mass migrations of people grew in size as part of the Age of Sail. During the century, slave trading expanded across the shores of the Atlantic Ocean, while declining in Russia and China. Western historians have occasionally defined the 18th century otherwise for the purposes of their work. For example, the "short" 18th century may be defined as 1715–1789, denoting the period of time between the death of Louis XIV of France and the start of the French Revoluti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
