Ernest Esclangon
Ernest Benjamin Esclangon (17 March 1876 – 28 January 1954) was a French astronomer and mathematician.
Born in
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.
After the
Esclangon was the President of the Société astronomique de France (SAF), the French astronomical society, from 1933–1935.[2] In 1935, he received the Prix Jules Janssen, the society's highest award.
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.
The binary asteroid 1509 Esclangona is named after him.
The lunar crater Esclangon is named after him.
His doctoral students include Daniel Barbier, Édmée Chandon, Louis Couffignal, André-Louis Danjon, and Nicolas Stoyko.[3]
References
- ISBN 978-0-387-31022-0. Retrieved 22 August 2012.
- ^ Bulletin de la Société astronomique de France, November 1937, plates X–IX
- ^ Ernest Esclangon at the Mathematics Genealogy Project
External links
- O'Connor, John J.; Robertson, Edmund F., "Ernest Esclangon", MacTutor History of Mathematics Archive, University of St Andrews
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