Évry_Schatzman
Evry Léon Schatzman (16 September 1920 – 25 April 2010) was a French scientist hailed as "the father of modern French astrophysics".
Evry Léon Schatzman (16 September 1920 – 25 April 2010) was a French scientist hailed as "the father of modern French astrophysics".
Louis Jean-Baptiste Alphonse Bachelier (French: [baʃəlje]; 11 March 1870 – 28 April 1946) was a French mathematician at the turn of the 20th century. He is credited with being the first person to model the stochastic process now called Brownian motion, as part of his doctoral thesis The Theory of Speculation (Théorie de la spéculation, defended in 1900).
Bachelier's doctoral thesis, which introduced the first mathematical model of Brownian motion and its use for valuing stock options, was the first paper to use advanced mathematics in the study of finance. His Bachelier model has been influential in the development of other widely used models, including the Black-Scholes model.
Bachelier is considered as the forefather of mathematical finance and a pioneer in the study of stochastic processes.
Jacques Rose Ferdinand Émile Sarrau (Perpignan 24 June 1837 – Saint-Yrieix 10 May 1904) was a French chemist. He worked most of his career at the laboratory in the Dépôt Central des Poudres et Salpêtres (Central Depot for Powder and Saltpetre). He did research on explosive shock waves, the effects of explosives and he developed new explosives. The Mach number was sometimes called in French the Nombre de Sarrau (Sarrau number).
Giovanni Sansone (24 May 1888 – 13 October 1979) was an Italian mathematician, known for his works on mathematical analysis, on the theory of orthogonal functions and on the theory of ordinary differential equations.He was an Invited Speaker of the ICM in Bologna in 1928.
Julius Ferdinand Ruska (9 February 1867, Bühl, Baden – 11 February 1949, Schramberg) was a German orientalist, historian of science and educator.
He was a critical scholar of alchemical literature, and of Islamic science, raising many issues on attributions and sources of the texts, and providing translations. The range of his studies was wide, including the Emerald Tablet, a basic hermetic text. From 1924 he headed an institute in Heidelberg, where he has been a student.
Of his seven children, Ernst Ruska and Helmut Ruska were distinguished in their fields.
Antonio Rostagni (14 July 1903 – 5 December 1988) was an Italian physicist and academician.
He was a physicist involved in research in the fields of terrestrial physics, electromagnetic waves, and cosmic rays.
He was professor of physics at the University of Messina beginning in 1935 and at the University of Padua beginning in 1938. Among his students was Giuseppe Grioli.
Starting in 1950, he was a corresponding member of the Accademia dei Lincei of which he became a national member. He became a member of the Academy of Sciences of Turin in 1951.
Rostagni was vice-President of the Italian National Institute of Nuclear Physics from 1956 to 1958 and from 1958 to 1959 was director of the Research Division at the International Atomic Energy Agency (IAEA) at Vienna.
Vasco Ronchi (Italian: [ˈvasko ˈroŋki]; December 19, 1897 – October 31, 1988) was an Italian physicist known for his work in optics. He was born on 19 December 1897 in Florence, Italy. Along with Enrico Fermi, he was a student of Luigi Puccianti. He studied at the Faculty of Physics of the University of Pisa from 1915 to 1919.
In 1922 Ronchi published work describing testing methods for optics using simple equipment. The Ronchi test is widely used in amateur telescope making. The Ronchi ruling also bears his name.
He served numerous terms as the President of the 'Union Internationale d'Histoire des Sciences' within the UNESCO.
Ronchi authored 900 papers and 30 books.
Charles Edmond Alfred Riquier (19 November 1853, Amiens – 17 January 1929, Caen) was a French mathematician.Riquier matriculated in 1873 at the École Normale Supérieure (ENS) where he received his agrégé in mathematics in 1876. He taught from 1876 to 1878 at the Lycée de Brest and then from 1878 to 1886 at the Lycée de Caen and from 1886 to 1924 at the Université de Caen, where he retired as a professor emeritus.
After a brief leave of absence from the Lycée de Caen, Riquier received his doctorate in mathematics in 1886 from ENS at Paris with dissertation Extension à l’hyperespace de la méthode de M. Carl Neumann pour la résolution de problèmes relatifs aux fonctions de variables réelles à laplacien nul. His thesis committee consisted of Hermite (as chair), Darboux, and Picard.In 1910 he was awarded the Poncelet Prize. In 1920 he was elected to the French Academy of Sciences as the successor to Hieronymus Zeuthen. (Eugène Fabry was elected Riquier's successor in 1931.)
Riquier, Maurice Janet, Joseph Miller Thomas, Joseph Fels Ritt, and Ellis Kolchin were among the greatest pioneers of differential algebra and symbolic computation for systems of partial differential equations.
Franco Dino Rasetti (August 10, 1901 – December 5, 2001) was an Italian (later naturalized American) physicist, paleontologist and botanist. Together with Enrico Fermi, he discovered key processes leading to nuclear fission. Rasetti refused to work on the Manhattan Project on moral grounds.
Joseph Jean Baptiste Neuberg (30 October 1840 – 22 March 1926) was a Luxembourger mathematician who worked primarily in geometry.