Charles François du Fay Biography

Charles François du Fay

(Charles François de Cisternay du Fay; Paris, 1698-id., 1739) French physicist.He continued the investigations of Stephen Gray on the conduction of electricity and determined in 1733 the existence of two classes of electricity obtained by rubbing: resinous and vitreous, corresponding to what would later be called positive and negative electricity.He also distinguished between conductors and insulators and revealed the repulsion between electrically charged bodies of the same sign.He also conducted studies on crystalline optics.

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Georges bruhat Biography

Georges Bruhat (Besançon, 1887-Buchenwald, 1944) French physicist.Graduated in physical and mathematical sciences in 1908, he later received his doctorate with a thesis entitled The abnormal dispersion of the power of molecular rotation , which he defended shortly before the outbreak of the First World War.Mobilized in 1915, he developed sound-tracking devices during the war that earned him the cross of war. Georges Bruhat In the interwar period he was a professor at the University de Lila and at the Sorbonne, he carried out various works on physical optics and thermodynamics and published the Course in General Physics , a manual of exceptional pedagogical value divided into four volumes: Electricity ( 1924), Thermodynamics (1926), Optics (1930) and Mechanics (1934).In 1944, after refusing to expose a student, he was arrested by the Gestapo; a year later he died in a concentration camp.

Godfrey of Bouillon Biography

Godfrey de Bouillon Knight of the First Crusade, creator of the Kingdom of Jerusalem (Baisy, Brabant, c.1061-Jerusalem, 1100).He was Duke of Lower Lorraine (Netherlands) and a faithful ally of the Emperor Henry IV, whom he had helped in his struggles against Rudolph of Swabia and against Pope Gregory VII.When Pope Urban II appealed to Christendom for a Crusade to liberate the "Holy Places" from the hands of Islam, Godfrey was one of the first to go (1095).He sold most of his domains to finance his own army, with which he arrived in Constantinople in 1096.He loaned vassal to the Byzantine emperor in exchange for food and troops.And, after his outstanding participation in several victorious battles against the Muslims (Nicaea, Dorilea, Antioch), he became head of the crusaders.These named him king of Jerusalem once the city was taken in 1099; but Godfrey did not admit the title, claiming Christian humility, and changed it to "protector of the Holy Sepulcher." He or...

Johann Tobias Beck Biography

Johann Tobias Beck (Balingen, 1804-Tübingen, 1878) German Protestant theologian.Professor in Basel and preacher in Tübingen (1843), he opposed Baur's school a realistic inspiration more in line with the text of the Scriptures.

Jose Maria de Aguirre Biography

José María de Aguirre (Tolosa, 1896- id ., 1933) Spanish writer in the Basque language.Under the pseudonym Xabier de Lizardi , he wrote books of poems ( En el corazón y en los ojos , 1932), a play ( The boy who did not could marry ) and a volume of prose ( Plain Word , 1934).

James Ramsay MacDonald Biography

James Ramsay MacDonald (Lossiemouth, Scotland, 1866-at sea, 1937) British politician who was Prime Minister between 1929 and 1935.Of humble origins, he joined the Independent Labor Party in 1894, of the one who would become president.In 1900 he participated in the formation of the Labor Representation Committee, an organization designed to ensure the presence in Parliament of an autonomous group that defended the reformist and egalitarian ideas of the trade union movement. Ramsay MacDonald In 1906 he was elected deputy in the midst of a great electoral success for his party, which changed its name to the Labor Party.He led the parliamentary group from 1911 to 1914, the year in which he did not get re-election due to his pacifist stance in the face of the imminent outbreak of the First World War.Re-elected in 1922 by a Welsh mining district, he became leader of the opposition. In 1924 he became Prime Minister and Minister of Foreign Affairs of a brief minority government, from ...

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...

Frank Hamilton Cushing Biography

Frank Hamilton Cushing (Northeast, 1857-New York, 1900) American ethnologist.He led numerous expeditions to the territory of the Pueblo Indians of New Mexico.

Gaudenzio ferrari Biography

Gaudenzio Ferrari (Valduggia, c .1480-Milan, 1546) Italian painter, sculptor and architect.He was inspired by Bramantino and collaborated with Rafael Sanzio in Rome.He worked in Saronno ( Concert of Angels , 1535) and in Vercelli. While in Florence the lessons of Leonardo da Vinci were assumed as an important trend, although no less than others, in Lombardy they had an exclusive and immediate repercussion, forming a true school focused on both the aesthetic content and the more technical aspects of the master's painting.Leonardo's teachings also reached the Piedmont region, where the painter and sculptor Gaudenzio Ferrari made, in the city of Varallo Sesia, large fresco cycles with scenes from the life of Jesus Christ, both in the church of Santa Maria delle Grazie and in the Sacro Monte chapel, some of them also made up of sculptures. Natividad (1511), by Gaudenzio Ferrari The art of Gaudenzio Ferrari fuses elements of diverse origin, both Peruginescos and Rafaele...

Hevelius [Johannes Havelke] Biography

Hevelius [Johannes Havelke] (Danzig, 1611- id. , 1687) German astronomer.He drew up a first lunar map, published under the name Selenography (1647), in which he assigned names to the various features of the lunar surface and called the dark areas the sea.He determined the period of rotation of the Sun, observed its spots and discovered the faculae.In 1657 he began a catalog in which he determined the positions of 1,500 stars and that he could not finish because of a fire that destroyed his observatory (1679).

Jan Mone Biography

Jan Mone (Metz, late 15th century-Mechelen, c. , 1548) Flemish sculptor.It seems proven that, between 1516 and 1520, he worked, together with B.Ordóñez, in the retrochoir of the Cathedral of Barcelona.In the Saint-Martin de Halle church there is an alabaster altar that he made for Charles V.He is also the author of numerous funerary monuments inspired by the Italian Renaissance style (Douai, Hoogstraten, Enghein, Braine-le-Château).

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