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

Hosea Biography

Hosea Old Testament prophet, the first of the group of the so-called Twelve Minor Prophets.Born around 800 BC.and died around 725 BC, he developed his ministry in the northern kingdom (Israel), where he came from.Hosea preached at the end of the reign of Jeroboam II (782-743 BC) and in the time of Uzziah, Jotham, Ahaz and Hezekiah; therefore, its prophetic mission must be between 750 and 725 BC. The prophet Hosea He is credited with the authorship of the so-called Book of Hosea , in which the prophet denounces the people's infidelity towards Yahweh and it reveals the tender love of God, comparable to that of the husband who forgives his unfaithful wife or the father who loves his rebellious son.The book comprises fourteen chapters, and is divided into two parts.The first (chapters 1-3) symbolically exposes Israel's infidelity and announces her punishment and salvation in a presaged return to national unity.The second (chapters 4-14) directly challenges the people with r...
Post a Comment
Read more

John jervis Biography

John Jervis (Meaford, 1735-Rochetts, 1823) British military.Commander of the English fleet in the West Indies (1793-1795) and in the Mediterranean (1795-1801).Forced to cross the Atlantic, he won a victory over the Spanish squad at Cape San Vicente (1797).First Lord of the Admiralty (1801-1804), where he put an end to corruption and indiscipline.
Post a Comment
Read more

Arthur Adamov Biography

Arthur Adamov (Kislovodsk, 1908-Paris, 1970) French-language playwright, founder of the theater of the absurd.He left Russia when he was only four years old.He studied in Switzerland, first, and then in Germany.In 1924 he moved to Paris, where he began to frequent surrealist environments.In this period he published some poetry, but immediately stopped writing, until 1946, when he published a heartbreaking and provocative little book, L'aveu , a ruthless analysis of his psychological and spiritual crisis.A year later, under the influence of Strindberg, he wrote his first theatrical text, La parodie . From 1946 to 1955 he developed the themes of what critics called New theater of isolation or Theater of the absurd , and he became an exponent of avant-garde drama, expressing in his texts the discomfort of the individual in the face of the structures imposed by society.Through his characters, lacking a precise psychological individuality, he configured impersonal dramas cross...
Post a Comment
Read more

Gordian I Biography

Gordian I (Rome, c .157-Carthage, 238) Roman Emperor (238).Procurator in Africa, the army opposed his appointment as emperor, the work of the great proprietors.His son defeated and killed by Capeliano, Maximino's legacy, committed suicide.
Post a Comment
Read more

Johannes kepler Biography

Johannes Kepler (Würtemburg, present-day Germany, 1571-Regensburg, id., 1630) German astronomer, mathematician and physicist.The son of a mercenary (who served for money in the hosts of the Duke of Alba and disappeared into exile in 1589) and a mother suspected of practicing witchcraft, Johannes Kepler overcame the consequences of an unhappy and sordid childhood thanks to his tenacity and intelligence. Johannes Kepler After studying at the seminaries of Adelberg and Maulbronn, Kepler entered the University of Tübingen (1588), where he studied theology and was also a disciple of the astronomer Michael Mästlin, a follower of Copernicus.In 1594, however, he interrupted his theological career by accepting a position as professor of mathematics at the Protestant seminary in Graz. Four years later, a few months after entering into a marriage of convenience, the edict of the Archduke Ferdinand against the Protestant teachers forced him to leave Austria, and in 1600 he moved to Prague...
Post a Comment
Read more

Anthony Hope Biography

Anthony Hope (Sir Anthony Hope Hawkins; London, 1863-1933) English novelist.He studied at Marlborough and Balliol College, Oxford, and in 1885 he graduated in classical letters.He dedicated his entire life to writing, which was crowned with great success and earned him, among other honors, the award of a title of nobility (1918).He soon became famous with the publication, in May 1894, of The Prisoner of Zenda , which enjoyed immense popular favor.This novel, derived in part from RL Stevenson's Prince Otto , started the fashion and passion for "Ruritanian adventures", named after the imaginary place, Ruritania, where the episodes narrated in The Prisoner of Zenda . A few weeks after the publication of such work, Anthony Hope managed to renew his extraordinary success with The Dolly Dialogues , a work that gave rise to another hobby: a kind of parlor comedy brilliant and epigrammatic.His novels of more serious inspiration also obtained excellent reception, which im...
Post a Comment
Read more

Federico Sopeña Biography

Federico Sopeña (Valladolid, 1917-Madrid, 1991) Spanish musicologist and music critic.Doctor of theology from the Gregorian University, he was professor of aesthetics and musicology at the Madrid Conservatory, where he also held the position of director (1951-1956).In 1958 he entered the Royal Spanish Academy and subsequently held the position of General Commissioner of Music (1971-1972) and director of the Prado Museum (1981-1983).His abundant production includes Contemporary European Music (1952), Stravinski (1956), Atlántida: Introduction to Manuel de Falla (1962) , Music and literature (1974), History of contemporary Spanish music (1976) and Written at night (1985).
Post a Comment
Read more

Armando Diaz Biography

Armando Diaz (Naples, 1861-Rome, 1928) Italian military and politician.He began his military career at the Military School of Rome, to later go on to that of Turin.After completing his military studies, he had his first destinations in Italian colonial Africa and his participation in the campaigns in Libya (1912) and Abyssinia stood out.This distinguished performance earned him his recognition and appointment as secretary to the Chief of Staff, being consecutively by Generals Saletta, Pollio and Cardona.With this position he reached the First World War. Armando Diaz In November 1917, after the Italian defeat of Caporetto in front of the Austro-Hungarian imperial troops, it was he same position at the head of the General Staff, succeeding General Luigi Cadorna.While in this position, the Austro-Hungarian army unleashed an offensive along the Piave River, between the months of June and July 1818; It was the first battle of the Piave, with an indecisive result, although the attacki...
Post a Comment
Read more

Elijah Querejeta Biography

Elías Querejeta (Elías Querejeta Gárate; Hernani, 1930-Madrid, 2013) Spanish film producer.He studied chemistry and law, while at the same time he was part of the Real Sociedad de San Sebastián football team, a career he abandoned at the age of 24.He was a regular at the screenings held by the city's film clubs, where he met other young people-Víctor Erice, Antonio Eceiza-who would study at the Official Film School of Madrid. Elías Querejeta In 1961 he founded his first company, Laponia Films, at the same time that he collaborated with other production companies on his first films.After directing several short films, in 1964 he decided to found Elías Querejeta P.C.From his first films, he defined the style he wanted to print in his works, intervening in almost all of them as co-screenwriter, while gathering around him a group of professionals who would guarantee the finish of each film (Luis Cuadrado and Teo Escamilla as directors photography; Primitivo Álvaro, in the produc...
Post a Comment
Read more