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

Gregorio ferro Biography

Gregorio Ferro (Gregorio Ferro Requeijo; Santa María de Lamas, 1744-Madrid, 1812) Spanish painter.He was a chamber painter and general director of the Academia de San Fernando.His style is influenced by Mengs ( Sagrada Familia , The Count of Floridablanca ). Gregorio Ferro began painting techniques in Santiago de Compostela (La Coruña), under the tutelage of a Benedictine monk.He then moved to Madrid, where he was a disciple of Felipe de Castro, Corrado Giaquinto and Antonio Rafael Mengs, successively.He studied at the San Fernando Academy of Fine Arts in Madrid, and already in the 1760 Academy contest he won third prize, after Ramón Bayeu and Francisco de Goya, who won the first and second respectively. At the Academy of San Fernando he held the positions of lieutenant director (1788), director (1797) and director general (1804), and he was appointed chamber painter of Carlos IV.Little known but appreciable is his facet as an engraver and illustrator: he illustrated part of t...
Post a Comment
Read more

Harry Lloyd Hopkins Biography

Harry Lloyd Hopkins (Sioux City, 1890-New York, 1946) American politician.He was a Roosevelt collaborator from his time as governor of New York.During his presidency he was one of the promoters of economic recovery and its representative in Europe during World War II.
Post a Comment
Read more

Edouard Manet Biography

Édouard Manet (Paris, 1832-id., 1883) French painter and printmaker.Son of an important civil servant of the Ministry of Justice, Édouard Manet was a mediocre student interested only in drawing.Faced with paternal resistance to starting an artistic career, he tried unsuccessfully to enter the Naval Academy until, after a second failed attempt, his family reluctantly agreed to finance his artistic studies, which began in 1850 in the workshop of the classical painter Thomas Couture. Édouard Manet After six years of apprenticeship, Édouard Manet established himself in his own studio.In those early days he established a relationship with artists and writers such as Henri Fantin-Latour, Edgar Degas and Charles Baudelaire.At the beginning of 1860 some of his works began to be recognized, which deserved, among others, the warm reception of the critic and writer Théophile Gautier. In his production at the end of the 1870s he accentuated the naturalism of his subject matter, to give th...
Post a Comment
Read more

Hebraeus Bar Biography

Bar Hebraeus (Abú-l-Faray ibn al-Ibri, called Bar Hebraeus; Melitene, 1226-Maraga, 1286) Syrian theologian.The author of a Syrian chronicle, which he later translated into Arabic, he was a monk in Antioch, bishop of Aleppo, and head of the eastern Jacobite community.
Post a Comment
Read more

Don Omar Biography

Don Omar (Stage name of William Omar Landrón, Puerto Rico, 1978) Puerto Rican singer and songwriter.Educated in Villa Palmeras, an underprivileged sector of Puerto Rico, Don Omar began to compose his first songs and poems at the age of twelve; Soon he was strongly attracted to reggaeton , a musical genre that emerged in Puerto Rico in the early 90's. His musical beginnings are linked to the church, to which he was linked as a pastor.For four years he was pastor at the Church of the Restoration in Christ in Bayamón, which he left due to a sentimental disappointment (his well-known theme Although you left includes this episode from his biography).During this period he was part of several groups that sang in religious celebrations. Don Omar In 2002 Don Omar's career took a turn when Héctor El Bambino , a famous member of the duo Héctor y Tito , heard him and decided to sponsor him as a music producer.It was then that Landrón adopted the name Don Omar and began to par...
Post a Comment
Read more

Edouard Mortier Biography

Édouard Mortier (Édouard Adolphe Casimir Joseph Mortier, Duke of Treviso; Cateau-Cambrésis, 1768-Paris, 1835) French military.He entered the militia in 1791 and with the rank of Marshal of France (1805) he intervened with the Napoleonic armies in Spain, where he participated in the second siege of Zaragoza and obtained the victory of Ocaña (1809).After the Hundred Days, he recognized Louis XVIII.With Luis Felipe, he was President of the Council and Minister of War (1834).He died the victim of an attack suffered by King Luis Felipe.
Post a Comment
Read more

Edward fitzgerald Biography

Edward Fitzgerald (Edward Purcell; Bredfield, 1809-Merton Rectory, Norfolk, 1883) English poet and translator.He is the author of the philosophical dialogue Euphranor (1851) and a Collection of apothegms and axioms (1852), but he is known, above all, for his adaptation of the Rubaiyat by the Persian poet Omar Jayyam (1859). Edward Fitzgerald Of aristocratic lineage, Edward Fitzgerald was educated at Trinity Cambridge College, where he befriended Alfred Tennyson (who dedicated his poem Tiresias to him), William Makepeace Thackeray, James Spedding and WB Donne, graduating in 1830; later he would study Spanish and Persian privately.He lived a lonely country lord existence in Suffolk, Woodbridge, or the surrounding area; He only moved from there on the occasion of a few periodic trips to London and alternated literary activity with gardening and yachting.An eccentric character, he was a brilliant correspondent and maintained a close literary relationship with Thomas Carlyle ...
Post a Comment
Read more

Domingo Fernández Navarrete Biography

Domingo Fernández Navarrete (Peñafiel, 1610-Santo Domingo, 1698) Spanish theologian and missionary.Dominico (1630), missionary in the Philippines (1646) and prefect of the Dominican missions in China (1664), took part in the Canton conference on Chinese rites (1668), in which he opposed the Jesuits.At his death, he was bishop of Santo Domingo.He wrote about the Chinese missions and religious writings in the Chinese language.
Post a Comment
Read more

Angel Fole Biography

Ánxel Fole (Ánxel Fole Sánchez; Lugo, 1903-1986) Spanish narrator and playwright in Galician language.Belonging, along with Álvaro Cunqueiro and Rafael Dieste, to a generation of Galician writers trained before the Civil War, Fole chose not to go into exile after the war and was subjected to a total internal ostracism. Ánxel Fole He began studies of philosophy and letters and law in Valladolid and Madrid, but abandoned both careers.He began to publish in the Lugo newspaper La Provincia (1927) and later collaborated in El Pueblo Gallego, in which his first article in Galician (1934) would appear and began his journalistic series Andar y ver .During the Second Republic he intervened in politics; He was vice president of the Lugo Grouping of the Republican Party and later militated in the Galician Party.At the same time he directed the literary page of Guión, wrote in Resol and founded Yunque, magazines that disappeared at the beginning of the Civil War (1936-1939). In...
Post a Comment
Read more

Edouard Balladur Biography

Édouard Balladur (Smyrna, 1929) French politician.Born in Smyrna into a family of bankers of Armenian origin, Édouard Balladur studied law at the University of Aix-en-Provence and graduated from the Institute of Political Studies in Paris. His political career began in the early 1960s.Technical adviser in Pompidou's cabinet from 1966 to 1968, the Prime Minister entrusted him with relations with the unions.Between 1969 and 1974 he was Secretary General to President Pompidou.Considered the shadow mastermind of that government, Balladur served as de facto president during Pompidou's long agony. After his death, he rejected the post of ambassador to the Vatican proposed by Valery Giscard d'Estaing and went on to work for a private company.In 1977 he was appointed president-director of General de Servicios Informáticos and in 1980, president of the European Accumulator Company.In 1984 he was appointed Councilor of State, and in the legislative elections of March 16, 198...
Post a Comment
Read more