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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Dwijendralal Ray Biography

Dwijendralal Ray (Also called Dwijendralal Roy, Dwijendra Lal Roy, D.L.Ray, Rèi Dvi-Endralal or Rai Dvigendralal; Krishnagar, 1863-1913) Indian poet and playwright.Born into a wealthy family (he was a member of the Brahmin caste, the first in the social ladder of India), he received a careful academic training. Dwijendralal Roy In his youth he became known as a writer through some satirical theatrical pieces; But his true recognition as a playwright came with the premiere of his historical dramas that, from a patriotic approach, seek to recover the main customs and customs of India, as well as its popular literary traditions. Part of its plot material comes from the Mahabharata , the huge epic poem that recounts, in Sanskrit, the confrontation between the forces of Good and Evil, embodied in the clans of the Pandavas and the Kauravas.His best-known plays are Mevarpatan , Durqadas and Candragupta . This love for the historical and cultural richness of India is also prese...

Camilo Torres Restrepo Biography

Camilo Torres Restrepo (Jorge Camilo Torres Restrepo; Bogotá, 1929-San Vicente de Chucurí, Santander, 1966) Priest and Colombian guerrilla.After being ordained a priest in 1954 and completing his training with sociology studies in Belgium (1954-1959), he participated in the founding of the Faculty of Sociology of the National University of Colombia, where he taught between 1959 and 1962. Camilo Torres Restrepo Worried since his youth about deep social inequalities, the charismatic personality of Camilo Torres Restrepo, the coherence of his progressive message and his initiatives in favor of the classes most disadvantaged had made him, since his return to the country, a figure of great relevance.The expulsion from the university (1962) increased its public projection and marked the beginning of an approach to revolutionary positions, which culminated in the abandonment of the priesthood and the incorporation of the National Liberation Army into the guerrilla (1965).Since then cal...

Phoenician numbers

In History Today Online we explained in a previous post which were the Arabic numerals, but the truth is that they are not the only ones, and although somewhat complicated to understand, the truth is that the Phoenician numbers are perhaps much more difficult.In History Today Online we talk to you now of which are the Phoenician numbers. The Phoenicians also known as Canaanites, although they were a civilization that occupied a region called Canaan and was a territory that currently encompasses Israel, Syria and Lebanon.They always stood out for their art, closely linked to the different Mediterranean influences and as not for an alphabet that they created and that is in fact the origin of the alphabet that we know today, they also had a numerical system and that we tried to decipher below. The Phoenician Numbers: The main basis of the Phoenician numbers, are the angles and the stripes since these are the base they used to create the different numbers.Depending on how e...

The medieval knight in combat

At the beginning of the eleventh century, some warriors on horseback distinguished themselves from the mass of free men.Why? Between the 8th and 9th centuries, the methods of combat had been radically transformed, and only a small number of people knew how to master the select service of weapons and become a knight . If we see in a movie an army full of thousands of thousands of knights, or a man who gets on a horse and automatically fights like a medieval knight , we must never lose sight of the fact that this is pure fiction and, it goes without saying, an insult to the work and education that the Knights of the Middle Ages carried out for years. Being a gentleman was extremely difficult .First of all, it required money.Horses, weapons , and the armors were among the most expensive objects of that time. The cavalry was increasingly taking center stage in the story medieval , was not always made up of powerful warriors and lords. The Carolingian fighter In the time ...

Jose Refugio Velasco Biography

José Refugio Velasco (Aguascalientes, 1851-Mexico, 1923) Mexican military.He evicted Pancho Villa de Torreón during the Huerta regime and, after the latter's fall, was part of the interim Carbajal government.Appointed commander-in-chief of the army, he signed the Teoloyucán Accords (1914) with the constitutionalists, which put an end to the Huerta period.

Heinrich maier Biography

Heinrich Maier (Heidenheim, 1867-Berlin, 1933) German philosopher.He produced a "critical realism", along the lines of H.Driesch.He is the author, among other works, of Aristotle's syllogistics (1896-1900) and of The philosophy of reality (1926-1935).

Claes oldenburg Biography

Claes Oldenburg (Stockholm, 1929) American artist.Along with Andy Warhol, he is considered one of the most prominent figures in pop art , a trend inspired by mass culture that reached its peak in the 1960s.At the age of five he moved with his family to Chicago.In 1950 he graduated from Yale and went on to study at the Chicago Institute School of Art.In 1956 he moved to New York, where he soon met other happening and environment artists (Jim Dine, Red Grooms, Allan Kaprow and Geoge Segal, among others). Claes Oldenburg In connection with these experiences he presented his first solo exhibition at the Judson Gallery (1960) under the title of The street .In it he gathered figures and objects made with cheap materials (cloth, cardboard, paper), forming a unique evocation of the urban landscape. A year later he exhibited The Store , a space crammed with facsimiles of food, clothing and other objects, made mainly of wire, plaster and fabric, and painted in bright colors.The i...

March ephemerides

The month of March according to the Gregorian calendar, is the third month of the year, composed of 31 days .Its name is derived from the Latin word Martius which in turn comes from Mars, Latin name of the planet Mars, which is also the god of struggle and battle, the god of war.But the reason for this article is not talk about the calendars and their origin but to know what relevant events took place in March, such as important births, decisive battles, discovery or foundation of cities, scientific discoveries, etc., in short, the Efemerides of the month of March. Article index Efemerides of the month of March | Efemerides March is a special month, is the month in which the great transformation of nature occurs, on 20/21, one of the two equinoxes of the year , which are the times when both day and night have the same duration. The equinox of March is that of spring for the northern hemisphere, while it will be autumn in the southern.Time when having more hours...

Cassiano Floristan Biography

Casiano Floristán (Casiano Floristán Samanes; Arguedas, 1926-Pamplona, 2006) Spanish theologian.He studied chemical sciences at the University of Zaragoza, philosophy at the University of Salamanca and theology at the University of Innsbruck (Austria), a subject in which he received his doctorate in 1959 from the University of Tübingen (Germany).Ordained a priest in 1956, since 1960 he devoted himself to teaching theology at the Pontifical University of Salamanca.He is the author, among other works, of The pastoral aspect of religious sociology (1960), Theology of pastoral action (1968), The catechumenate (1972) and Evangelization, the task of a Christian (1978).Casiano Floristán was also director of the collective work Fundamental concepts of pastoral (1983).

Joseph billings Biography

Joseph Billings (Turnham Green, c. , 1758-?) British navigator.Between 1776 and 1779 he collaborated with Cook in his astronomical observations.After touring the Siberian coast, NE of Kamchatka, he made a new coastal exploration trip through the Bering Sea in 1787-1791.

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