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

Jose Risueño Biography

José Risueño (Granada, 1665- id ., 1732) Spanish sculptor and painter.Follower of A.Cano, P.de Mena and D.de Mora, he worked in Granada, where he made the figures of the chapel of the Sacrament of the Carthusian monastery, the San Juan de Dios of the church of San Matías and the Crucified Christ of Sacromonte.It is famous for its polychrome baked clay figurines ( Penitent Magdalene ).
Post a Comment
Read more

Giovanni leone Biography

Giovanni Leone (Naples, 1908-Rome, 2001) Italian politician, President of the Republic from December 1971 to December 1978.He obtained a law degree in 1930 and a year later he graduated in Social and Political Sciences from the University of Camerino, where he was a student of Enrico de Nicola, future President of the Republic.In 1933, after obtaining a doctorate in both specialties, he began his teaching career, which throughout his life would alternate with politics and the practice of law from his Neapolitan law firm. He held the chair of Law at the universities of Camerino, Messina, Bari, Naples and Rome.He enrolled in the Christian Democracy (DC) in 1944, and in 1945 he was elected political secretary of the Neapolitan section.Likewise, with the end of the war he was awarded the rank of lieutenant colonel of the military justice system.In 1946 he was elected deputy in the Constituent Assembly and was part of the "Commission of 75" that drew up the Constitution. Ag...
Post a Comment
Read more

Heinrich Heine Biography

Heinrich Heine (Düsseldorf, present-day Germany, 1797-Paris, 1856) Prussian poet.Of Jewish origin, he studied literature, law and philosophy in Bonn and Berlin; His teachers and friends included Hegel and August Schlegel.His first lyrical compositions date from 1822, clearly influenced by Lord Byron and Friedrich de la Motte Fouqué. Heinrich Heine In 1823 he published Lyrical Intermezzo , a work linked to two tragedies ( Almanzor and Ratcliff ) of which his melodic vein should be noted, and in 1826 the first part of the Travel Paintings , whose four-volume edition he completed in 1831.These first Prose texts combine a fervent youthful lyricism with a scathing satire against diverse people and institutions.The ironic and agile prose of this work influenced later German authors and laid the foundations for a style that in the same text merged genres such as poetry, short stories, political essays, journalistic chronicles and autobiography. In 1827 Book of Songs was releas...
Post a Comment
Read more

What is the true origin of Father's Day?

On March 19, Father's Day is celebrated, and although we know that in Spain this celebration occurs on this day because it coincides with the day of the death of San Jose, putative father of Jesus Christ, the truth is that the real origin is a completely different one, then What is the true origin of Father's Day? In Spain Father's Day is celebrated since the 50s , when, following a bell at the department store, Galerias Preciados, it was established that every March 19, it was decided to exalt with gifts to the parents (in 1948 there was already a previous celebration with Mass, gifts and performances in the school of the teacher Manuela Vicente Ferrero which was the first one that I celebrate this day), but it was not in our country where this celebration originated. It seems that the custom of celebrating Father's Day comes to us from the United States and was celebrated for the first time in the early twentieth century, when a young woman decided to ...
Post a Comment
Read more

Why do Hindu women wear a red dot on their forehead?

It is one of the great mysteries (or perhaps not so mysterious) of humanity. Why do Hindu women wear a red dot on their forehead ? Everything has its explanation.And in this case, it would not be less. What seems logical is that in a culture like India, where colors are so relevant, one of its greatest symbols is this red dot or bindi .Bindi, in fact, in Indian means point.To complicate when the word for point is so cool.In fact, in the West, there are few people who already refers to this point as bindi, with total normality and as if it were our word. To begin with, it must be said that not in all cases it is red, because the bindi can be presented in several shades.However, before shelling the different shades, we should know that the bindi is associated with the third eye .Specifically, the point of energy they manage to unlock through meditation.Let's say it's the way they reach inner peace.It’s cool, right? Well, it's just one of the theories about bindi. Ma...
Post a Comment
Read more

Bruno Ferenc Straub Biography

Bruno Ferenc Straub (Nagyvárad [act.Oradea, Romania], 1914) Hungarian biochemist and politician.Prestigious biochemist, university professor, was a member of the International Atomic Energy Agency (1969-1971), director of the Institute of Enzymology (since 1979) and vice-president of the Hungarian Academy of Sciences 1974-1976 and since 1985).Member of the National Assembly (1985) despite not belonging to the Communist Party, between 1988 and 1990 he was President of the Republic.
Post a Comment
Read more

The US intervention in Vietnam

Between 1955 and 1964, the internal conflict in Vietnam opened its doors to an increasingly strong US intervention, who would end up waging his own war against the communist government of North Vietnam. In our previous article we have delved into the origins of the political conflict in Vietnam .The situation as it was raised in 1955 showed the territory of Vietnam divided into two states with policies opposite.One of them was communist ( North Vietnam ) and the other capitalist ( South Vietnam ).The latter would soon open its doors to American "help" in the fight against communism . The beginning of American intervention Just as it had happened just a short time ago during the Korean War , this was precisely the kind of scenario where the United States acudia to fight their battles against the " communist threat ", what we know as the " Cold War ". Recall that during the War Cold , the United States hardened their policy against...
Post a Comment
Read more

Bruno Munari Biography

Bruno Munari (Milan, 1907- id ., 1998) Italian artist and designer.His investigations since the 1930s on the possibilities of movement and abstract forms have led him to an original expression within kinetic art.Since 1958 he has devoted himself, above all, to design (works for B.Danese).
Post a Comment
Read more

The Berlin Wall - Construction, history and fall of the Berlin Wall

The Berlin Wall-Construction, history and fall of the Berlin Wall .The construction and especially the fall of the Berlin Wall have been great events that have marked the history of the 20th century since This wall divided Germany into two parts for more than 28 years. In this article we want to explain the background, the history of the construction, the fall and where you can see the remains of the Berlin Wall.all about the Berlin Wall, the Cold War symbol ! Index of the article Background of the Berlin Wall Let's start the article explaining how Germany was and what happened for the construction of the Berlin Wall.When World War II ended Germany was divided , we focused on Berlin where the city was segmented and n four sectors depending on the countries that occupied it.Or what is the same, Berlin was divided into these four sectors of occupation : The Soviet area The American zone The French zone The English zone When four countries with such different pol...
Post a Comment
Read more

Carl Gustav Jung Biography

Carl Gustav Jung (Kesswill, 1875-Küssnacht, 1961) Swiss psychologist and psychiatrist.He studied medicine in Basel, and began his activity at the beginning of this century, in the psychiatric clinic of the University of Zurich, of which he was later medical director. Carl Gustav Jung After having followed in Paris, for a semester, the psychopathology courses given by Pierre Janet at la Salpêtrière (1902), He returned to Zurich, worked at the Burghölzli clinic under the guidance of Eugen Bleuler and carried out studies that soon made him famous ( Diagnostiche Assoziations-Studien , 1904-1906). In 1905 he was appointed a free professor of psychiatry.While he was still working in the last clinic mentioned, of which he had become chief physician, he met Sigmund Freud in 1907, with whom he began a fruitful collaboration.He was editor of the Jahrbuch für psychoanalytische und psychopathologische Forschungen , directed by Bleuler and Freud, and in 1911 he became president of the ne...
Post a Comment
Read more