José María Plans and Freire Biography

José María Plans y Freire

(José María Plans y Freyre or Freire; Barcelona, 1878-Madrid, 1934) Spanish scientist.After studying physical-mathematical sciences at the University of Barcelona, Plans y Freyre completed a doctorate in Madrid.In 1905 he obtained by opposition the chair of physics and chemistry at the Castellón de la Plana Institute of Secondary Education, and in 1909 the chair of rational mechanics at the University of Zaragoza.

He stayed in this city until 1917, to hold the chair of cosmography and physics of the globe, and also gave a series of lectures on thermodynamics, gathered in a book entitled Lessons in thermodynamics (1913).In 1917, Plans y Freyre obtained the chair of celestial mechanics at the University of Madrid and in the academic year 1917-1918 he joined together with José Gabriel Álvarez Ude in the laboratory and mathematical seminar of the Board for Expansion of Studies, directed by Julio Rey Pastor, as a collaborator and research director.

The theory of relativity, which had begun to take citizenship status in Spain, thanks above all to the work of Blas Cabrera and Esteban Terradas, was a special object of attention from Plans and Freyre.In 1918 he published an article in which, taking the principle of relativity for granted, he exposed the connections between relativistic mechanics and Born's hyperbolic motion.Around the same time, he began directing research on this theory, including the doctoral thesis of Pedro Puig Adam.

In 1921, José María Plans y Freyre published Fundamental notions of relativistic mechanics , a work awarded by the Royal Academy of Exact, Physical and Natural Sciences of Madrid.This work is the first systematic treatise on general relativity, although only by way of introduction.Three years later, he published Notions of absolute difference calculus and its applications , a work that sets out the essential mathematical basis for approaching general relativity.

Plans y Freyre became the main disseminator of Einstein's theories in Spain, and also gave considerable impetus to research on these theories.Einstein himself would highlight in Plans "a pilgrim art of expressing deductions with luminosity and relief".

Comments

Armillita Chico Biography

Armillita Chico (Nickname of Fermín Espinosa Saucedo; Saltillo, 1911-Mexico City, 1975) Mexican bullfighter.He inherited the nickname from his father, the bullfighter and banderillero from Zacatecas Fermín Espinosa.He was the brother of two banderilleros, Cenaido and José, and of another great bullfighter, Juan Espinosa Saucedo ("Armillita"); Furthermore, he was the father of three other alternative killers: Fermín, Manuel and Miguel Espinosa Menéndez. In 1927 he received the alternative from Antonio Posada Carnerero.Consecrated as a figure of bullfighting in his country, he chose to cross the Atlantic.Already at that time his brother Juan Espinosa Saucedo was on Hispanic soil, who agreed to sponsor the young Fermín in his forced alternative in Spain, which took place in 1928 in the Monumental bullring of Barcelona.He confirmed the alternative on May 10, 1928, sponsored by Manuel Jiménez Moreno ("Chicuelo"). Soon contracts began to rain in the main Spanish sq...

Egon Eiermann Biography

Egon Eiermann (Neuendorf, 1904-Baden-Baden, 1970) German architect.He was a disciple of H.Poelzig and was influenced by Mies van der Rohe.He brought the rationalist tradition to the utmost technological and functional refinement (Blumberg handkerchief factory, Merkur department store in Stuttgart).

The human evolution: hominization process

The DNA of human beings only differs from the DNA of chimpanzees by 1.24%.That is, we share 98.76% of our genetic traits.The great difference between chimpanzees and humans that this small percentage, is explained through the human evolution and the main processes of hominization that our species has suffered throughout what we know as prehistory, when our ancestors They were hunters and gatherers: the skeletal changes associated with the upright position, the increase in cranial capacity and the birth of immature offspring. Article index Human evolution: hominization process The study of human evolution begins in 1859 with the publication of "The Origin of Species" by Charles Darwin , where he exposes his Evo Theory lucion, based on three fundamental premises: Different species have their origin in the evolution of a previous species. This evolution is governed by the principle of Natural Selection .Only those species that best adapt to the changes evolve. ...

Heinrich bullinger Biography

Heinrich Bullinger (Bremgarten, 1504-Zurich, 1575) German Protestant theologian.On the death of Zwingli and expelled by the Catholics, he took refuge in Zurich.He wrote the first and second Helvetic Confession of Faith (1536 and 1566).

Guillermo Cabrera Infante Biography

Guillermo Cabrera Infante (Gibara, Cuba, 1929) Cuban writer, nationalized British.In 1951 he founded the Cuban Cinematheque, of which he was director until General Batista ordered its closure, a work that he combined with his articles on film criticism for the magazine Carteles, which he published under the pseudonym G.Caín (1954-1960).He also directed the literary magazine Monday of Revolution, banned in 1961 by Castro.In 1966 he published his first renowned novel, Tres tristes tigres, whose experimental nature lies in the ingenious use of language in its most colloquial register and the constant play of winks and references to other literary works.He was a diplomat in Brussels, until he definitively broke with the Castro regime and settled in London.He has written other outstanding novels, such as Vista delmanecer en el tropico (1974), Exorcismos de esti (l) o (1976) and essays such as Vidas para leerlas (1998).In 1998 he received the Cervantes Prize.

Heinrich Gentz Biography

Heinrich Gentz (Wroclaw, 1766-Berlin, 1811) German architect.He is one of the best exponents of the first German classicism.He looked for the relationship between the façade and the character of the buildings and between the internal layout and the use to which they were intended.

Space, change and permanence ... elements to understand history

In some of our latest articles we have analyzed different aspects of knowledge construction historical .In the latter post we have to reflect on the historical categories of " space ", " change " and " permanence " and its importance to sharpen our understanding of the history . Old Map of Colonia del Sacramento , disputed by Portuguese and Spanish for its strategic location in the Rio de la Plata As we know the History studies human societies in the past .Y of course, these societies lived in a territory ( space ) in particular, so whenever we start studying a society of the past we must place it in space and time. The space is a very important aspect e to study the History. Each territory has its own characteristics that can be decisive for understanding many aspects of a society .For example: what economic production does it do, trade routes, the distribution of the population, the strategies in wars, etc.In addition, soc...

Asdrúbal Giscón Biography

Asdrúbal Giscón (ss.II-III) Carthaginian military.Son of Giscón.In the Iberian peninsula, he helped the barquidas in their fights with the Romans.In 212 he defeated Publio Escipión near Cástulo (Cazlona).Defeated in Africa by Publius Cornelius Scipio (203), he was removed from command.

Hugo Eckener Biography

Hugo Eckener (Flensburg, 1868-Friedrichshafen, 1954) German aeronaut, one of the promoters of the famous zeppelins of the interwar era.Eckener carried out his aeronautics studies at three German universities: Munich, Berlin and Leipzig. Hugo Eckener After finishing his degree, he joined the Zeppelin factory, where he would develop rigid airplanes, as well as the lightest airplane in the world for fly around the earth.During World War I, Eckener dedicated himself to teaching German war pilots, while directing the construction of 88 zeppelins for German aviation. After the war, Eckener took over the reins of Ferdinand von Zeppelin's factory, when he died in 1918, and he became president of it in 1924.In that time interval he devoted himself mainly to popularizing business travel.In that same year he directed the ZR-3 flight between the German city of Friedrichshafen (Berlin) to the North American city of Lakehurst (New Jersey).This airship was built for the United States as ...

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...

History Today Online

Search This Blog