Ernest Benjamin Esclangon (March 17, 1876 – January 28, 1954) was a French astronomer and mathematician. March 17 is the 76th day of the year in the Gregorian Calendar (77th in Leap years). ... 1876 is a leap year starting on Saturday. ... January 28 is the 28th day of the year in the Gregorian Calendar. ... 1954 was a common year starting on Friday of the Gregorian calendar. ... An astronomer or spmething i cant inderstand is a scientist whose area of research is astronomy or astrophysics. ... A mathematician is a person whose area of study and research is mathematics. ...

Born in Misson (near Sisteron), France, in 1895 he started to study mathematics at the École Normale Supérieure, graduating in 1898. Looking for some means of financial support while he completed his doctorate on quasi-periodic functions, he took a post at the Bordeaux Observatory, teaching some mathematics at the university. Sisteron is a commune in France, in the département of Alpes-de-Haute-Provence. ... 1895 was a common year starting on Tuesday (see link for calendar). ... Wikibooks Wikiversity has more about this subject: School of Mathematics Wikiquote has a collection of quotations by or about: Mathematics Look up Mathematics in Wiktionary, the free dictionary Wikimedia Commons has more media related to: Mathematics Bogomolny, Alexander: Interactive Mathematics Miscellany and Puzzles. ... The quadrangle at the main ENS building on rue dUlm is known as the Cour aux Ernests – the Ernests being the goldfish in the pond. ... 1898 was a common year starting on Saturday (see link for calendar). ...

During World War I, he worked on ballistics and developed a novel method for precisely locating enemy artillery. When a gun is fired, it initiates a spherical shock wave but the projectile also generates a conical wave. By using the sound of distant guns to compare the two waves, Escaglon was able to make accurate predictions of gun locations. World War I was primarily a European conflict with many facets: immense human sacrifice, stalemate trench warfare, and the use of new, devastating weapons - tanks, aircraft, machineguns, and poison gas. ... Ballistics (gr. ... In fluid dynamics, a shock wave is a nonlinear or discontinuous pressure wave. ...

After the armistice, Escaglon became director of the Strasbourg Observatory and professor of astronomy at the university the following year. In 1929, he was appointed director of the Paris Observatory and of the International Time Bureau, and elected to the Bureau des Longitudes in 1932. In 1933, he initiated the talking clock telephone service in France. He was elected to the Académie des Sciences in 1939. An armistice is the effective end of a war, when the warring parties agree to stop fighting. ... The University Palace in Strasbourg, and a monument to one of the universitys students, Johann Wolfgang Goethe The University of Strasbourg in Strasbourg, Alsace, France, is divided into three separate institutions. ... 1929 was a common year starting on Tuesday (link will take you to calendar). ... The Paris Observatory (in French, Observatoire de Paris or Observatoire de Paris-Meudon) is the foremost astronomical observatory of France, and one of the largest astronomical centers in the world. ... The Bureau des Longitudes is a French scientific institution, founded by decree of June 25, 1795 and charged with the improvement of nautical navigation, standardisation of time-keeping, geodesy and astronomical observation. ... 1932 is a leap year starting on a Friday. ... 1933 was a common year starting on Sunday (link will take you to calendar). ... This article needs to be cleaned up to conform to a higher standard of quality. ... The French Academy of Sciences (Académie des sciences) is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French scientific research. ... 1939 was a common year starting on Sunday (link will take you to calendar). ...

Serving as director of the Paris Observatory throughout World War II and the German occupation of Paris, he retired in 1944. He died in Eyrenville, France. World War II was a truly global conflict with many facets: immense human suffering, fierce indoctrinations, and the use of new, extremely devastating weapons like the atom bomb. ... France surrendered to Nazi Germany early in World War II (June 24, 1940). ... 1944 was a leap year starting on Saturday (link will take you to calendar). ...

The binary asteroid 1509 Esclangona is named after him. The term binary asteroid refers to a system in which two asteroids orbit their common centre of gravity, in analogy with binary stars. ... 1509 Esclangona is a small asteroid discovered on December 21, 1938 by André Patry from Nice, France. ...

External link

• Biography at the MacTutor archive