Skip to main content

Edmund halley Biography

Edmund Halley

(Edmund or Edmond Halley; London, 1656-Greenwich, Great Britain, 1742) English astronomer.He was the first to catalog the stars in the southern sky, in his work Catalogus stellarum australium .In 1682 he observed and calculated the orbit of the comet that bears his name, and announced his return at the end of 1758, according to a theory of his that defended the existence of elliptical path comets associated with the solar system.In the most important of his works, Synopsis astronomiae cometicae (1705), he applied Newton's laws of motion to all available data on comets.Among other contributions in the field of astronomy, he demonstrated the existence of proper motion in stars, which reduced the validity of the oldest observations, and studied the complete revolution of the Moon over a period of eighteen years.His Astronomical Tables , on which he worked until his death, were valid for many years.

Edmund Halley

Contributor From Newton in his works on the gravitational attraction between bodies, Edmund Halley was the first astronomer to predict the return of comets periodically near the Earth; his last name gave name to the most famous of them.From a wealthy social background, he devoted himself from his youth to mathematics and astronomy.In 1676 he embarked for the island of Santa Elena, in the South Atlantic; there he would carry out the first cataloging of the stars in the southern sky.

His work opened the doors of English scientific society to him and, on the occasion of a project to develop a theory on gravitation and the motion of astral bodies, he came into contact with Isaac Newton.The dialogue and cooperation between the two scientists led to the conception of the famous general law of gravity, which appeared in the book Philosophiae naturalis principia mathematica ( Mathematical principles of natural philosophy , 1687 ) by Newton, which Halley himself prefaced and sponsored for the editors of the work.

From 1720 until his death he was director of the Greenwich Observatory and Astronomer Royal, a prestigious position that John Flamsteed and James Bradley held before and after him.As a continuation of his works on astronomy, and applying Newton's laws, he described the parabolic orbits of a total of twenty-four comets in his book Synopsis astronomiae cometicae ( Synopsis of the astronomy of comets , 1705), and proved that the comets that had been observed in the years 1531, 1607 and 1682 were actually returns of the same comet.Of that same comet, which would later be called Halley's Comet in his honor, he predicted that it would return in the year 1758.Sixteen years after Edmund Halley's death, astronomers confirmed the complete accuracy of his prediction.

Labels:

Comments

Post a Comment

Popular posts from this blog

Josep Maria de Sagarra Biography

Josep Maria de Sagarra (Josep Maria de Sagarra i Castellarnau; Barcelona, ​​1894-1961) Spanish poet, playwright and storyteller in the Catalan language who was the most popular author on the Catalan scene during the decades of 1920 and 1930.Son of a linajuda native family of the region of La Segarra, his father, Ferran de Sagarra i de Siscar, was a notable historian and archaeologist specialized in stealth.Sagarra's literary vocation was manifested from his childhood: at the age of eight he wrote verses and performed comedies at home. Josep Maria de Sagarra He was educated with the Jesuits of Barcelona; one of his teachers, Father Moreu, encouraged him in his penchant for poetry.At the age of twelve he saw his first verses published, and in 1914 his first book appeared: Primer llibre de poemes .He studied Law at the University of Barcelona: among his friends and classmates were the poets Josep Maria López-Picó and Carles Riba.It was presented to Joan Maragall, who guessed i...
Post a Comment
Read more

Heinrich maier Biography

Heinrich Maier (Heidenheim, 1867-Berlin, 1933) German philosopher.He produced a "critical realism", along the lines of H.Driesch.He is the author, among other works, of Aristotle's syllogistics (1896-1900) and of The philosophy of reality (1926-1935).
Post a Comment
Read more

Jose Maria Nemesio Otaño Biography

José María Nemesio Otaño (José María Nemesio Otaño y Eguino, Azcoitia, 1880-San Sebastián, 1956) Spanish composer and musicologist, one of the essential figures in the reform of sacred music in Spain during the first half of the 20th century. He studied organ in Guipúzcoa and later counterpoint and composition with Vicente Goicoechea in Valladolid.In 1896 he entered the Society of Jesus and soon obtained the position of organist at the Loyola Basilica. In 1907 he organized the First National Congress of Sacred Music in Valladolid, and that same year he founded the magazine Hispanic Sacred Music , which, following the proposals of Pope Pius X, served to give new air to the religious music that had been performed in Spain until now. Since 1911 he was director of the choir of the Pontifical University of Comillas, which became a model of good functioning for other religious choral groups in Spain.Simultaneously, Otaño continued composing, giving classes and organizing activities...
Post a Comment
Read more

Jorge Donn Biography

Jorge Donn (Buenos Aires, 1944-Lausanne, 1992) Argentine dancer and artistic director.He began his studies in 1952, at the Escuela del Teatro Colón in Buenos Aires.In 1960, he was seen by Maurice Béjart, who was on tour in America with his dance company, and invited him to join it, which Donn did from 1962; two years later he joined it permanently in 1964 and became its first male figure.In 1963 he went to Europe to become a principal dancer with the Ballet du XXe Siècle.With this company he premiered numerous ballets by Maurice Béjart.He was a guest dancer with the New York City Ballet, the Opéra de Paris and the Bolshoi Ballet.In 1980 he was appointed artistic director of the Ballet du XXe Siècle.He appeared in the films Le Danseur (1968) and Les Uns et les Autres (1981).
Post a Comment
Read more

Jose Miguel Ullán Biography

José Miguel Ullán Spanish poet born in Villarino de los Aires (Salamanca) in 1944.He is the author of the poetry books El jornal (1965), Peninsular love (1965), Human power (1966), Maniluvios (1972), Frases (1975), Soldadesca (1979) and Named spots (1984).The essay genre includes the works Las soldades by Francisco Peinado (1977), Abecedario by Brinkman (1977) and Zóbel (1978).A regular contributor to written press and literary magazines, he brought together in Ardicia (1994) a wide sample of his poetic work.Always very close to plastic artists such as Chillida, Miró, Palazuelo or Saura, his reflections on the work of Tápies were published in 2000 under the title Tápies, ostinato .In 2003 he published two books of visual poems, Ni mu and Con todos las letras .The following year he returned to poetry written with Master of Keys .
Post a Comment
Read more

Jose Bono Biography

José Bono (José Bono Martínez; Salobre, Albacete, 1950) Spanish politician.A true heavyweight of the Spanish Socialist Workers Party (PSOE), he was president of the Community of Castilla-La Mancha for six consecutive legislatures (1983-2004) and Minister of Defense in the first cabinet of José Luis Rodríguez Zapatero (2004-2006).From 2008 to 2011 he presided over the Congress of Deputies. José Bono A Jesuit student in his childhood and a law degree from the University of Navarra, specialized in Criminal Law, José Bono took the political habit from a Catholic commitment that he held throughout his public career.Around 1973 he began to practice as a lawyer and joined the ranks of the PSI, reconverted into the Popular Socialist Party (PSP) by Professor Enrique Tierno Galván.The transition to democracy began after the death of dictator Francisco Franco (1975), José Bono was a candidate for this formation to the Congress of Deputies in the 1977 general elections, but did not win the ...
Post a Comment
Read more

Auguste Villiers de l'Isle-Adam Biography

Auguste Villiers de l'Isle-Adam (Jean-Marie Mathias Philippe Auguste, Count of Villiers de l'Isle-Adam; Saint-Brieuc, 1838-Paris, 1889) French writer.Author of stories considered masterpieces of the genre, which present a novel synthesis of philosophical tale, horror story, science fiction and esotericism, his first works ( Two poetry essays, 1858; First poems, 1859) do not allow us to deduce what was his later production, once he had met Charles Baudelaire (1859) and Stéphane Mallarmé (1864), and discovered Hegel's philosophy.In 1866 he collaborated in the Parnasse Contemporain .In 1867 he founded the Revue des Lettres et des Arts and wrote The Intersign , his first "cruel tale." In 1870 he sided with the commune; In 1883, the publication of his Cruel Tales earned him some notoriety, but his living conditions remained precarious until his death.His other works include the novels Isis (1862) and The Future Eva (1886), the short novel Claire Lenoi...
Post a Comment
Read more

Francesco Clemente Biography

Francesco Clemente (Naples, 1952) Italian painter, associated with the Italian trans-avant-garde movement.He studied architecture at the University of Rome and was related to the artistic environments of Rome in the sixties, presided over by figures such as Cy Twombly and Alighiero Boetti.The presence of Beuys's work in Rome also exerted a powerful influence on Clement.In 1974 he traveled with Boetti to Afghanistan.Before his friendship with Boetti, Clemente had already drawn countless drawings in which he developed a personal vocabulary of symbols.His first paintings consisted of an abstract mixture of pictorial symbols with figures, animals and objects, sprinkled on the surface, in such a way that all the elements function independently and maintain their identity.His first solo exhibition took place at the Valle Giulia gallery in Rome in 1971.Since the early eighties his work has been present in important galleries and museums in Europe, America and Japan.
Post a Comment
Read more

Edgar faure Biography

Edgar Faure (Béziers, 1908-Paris, 1988) French politician.Doctor of Laws, he was director of Legislative Services of the French Committee for the Liberation of Algiers, and was part of the French delegation in the Nuremberg process.As a Radical Socialist deputy he was several times Minister of Economy and Finance and, on two occasions, President of the Council of Ministers.Excluded from the Radical Party, he evolved to Gaullist positions.When de Gaulle retired, he led the Gaullist left, returned to government as Minister of Social Affairs, and was elected President of the National Assembly in 1973, a position he held until 1978.
Post a Comment
Read more